Active Suspension System        go back to Index List   Home

What it is: Active suspension systems move each wheel up and down to control body motion in response to road abnormalities. The system responds to inputs from the road and the driver. With an active suspension, a vehicle can simultaneously provide the smooth ride of a soft suspension along with the superior handling associated with a firm suspension.

How it works: Most active suspension systems use a highpressure pump with hydraulic cylinders at each wheel to position the wheels with respect to the vehicle. Up and down motion of the wheels is actuated by electronically controlled valves. Other alternatives to power active suspension systems include electric motors or electromagnets. In any system, sensors at each wheel determine vertical wheel position and the force of the road acting on the wheel. Some systems use "road preview" sensors (radar or laser) to provide information about road abnormalities before the front wheels reach them. Accelerometers tell the computer when the vehicle is accelerating, braking or cornering. The computer uses complex algorithms to continuously process information and decide the position of each wheel. Coil springs can be used at each wheel to avoid "bottoming out" of the suspension in case of system failure; they also can reduce the power required to support the sprung weight of the vehicle.

Customer benefit: Outstanding ride and handling, even on rough roads.


Active Tilt Control       go back to Index List             Home

What it is: Active tilt control winds up the stabilizer bars in the front and rear suspension to resist body lean while cornering. Because active control is used only as needed, vehicle spring rates and stabilizer bar stiffness can be reduced, improving normal ride characteristics. In addition, this system has potential to increase low-speed, off-road traction on 4WD vehicles.

How it works: The control module receives a lateral acceleration signal from a body-mounted accelerometer. The module directs pressure from a pump to hydraulic cylinders that replace stabilizer bar links. During cornering, the cylinders wind up the stabilizer bars, which increases resistance to body lean. The system is deactivated at slow speeds to increase driver comfort. Off-road traction is improved due to lower resistance from the stabilizer bars, allowing the front and rear wheels to better follow the surface of rough roads.

Customer benefit: Reduced vehicle lean when cornering and improved ride.

Adaptive/Intelligent Cruise Control    go back to Index List       Home

What it is: Adaptive cruise control (ACC) improves on traditional cruise control by allowing a vehicle to automatically follow another vehicle at a set distance. With ACC, the driver sets the system when his or her vehicle is at the desired interval from the lead vehicle. ACC maintains that spacing up to a maximum vehicle speed, also set by the driver. The driver must remain alert to override the system if necessary. When the distance to the lead vehicle and/or relative speed indicates a need for braking, some ACC concepts merely disengage the throttle (and enable a downshift) and give a warning to apply the brakes. other concepts actually tap the brakes to warn the driver. When the lead vehicle changes lanes or exits and the road is clear, the ACC will accelerate to the set speed.

How it works: When actuated by the driver, a microwave radar unit or laser transceiver on the front of the vehicle determines the distance to the vehicle ahead and relative speed. The computer continually adjusts the throttle (and braketap system if so equipped). Braking can override the system at any time.

Customer benefit: increased driver convenience and improved traffic flow on busy highways.


Adaptive Transmission Control (ATC)       go back to Index List        Home

What it is: The Adaptive Transmission Control system recognizes individual styles of driving (e.g., aggressive vs. relaxed) and adapts transmission shift parameters accordingly. Two types of ATC are adaptive shift-scheduling and adaptive shift-quahty control. Adaptive shift scheduling uses information to assess driving style and decides when to upshift or downshift. it also can identify uphill or downhill gradients and recognize hard cornering. This helps inhibit shifts that might be annoying to the driver or affect vehicle stability. Adaptive shift-quality control uses information about the vehicle or environment, such as changes in the transmission due to wear, to improve the quality of shifts. This system can also adjust shift smoothness to suit driving style (e.g., crisper shifts for aggressive driving or smoother shifts for normal driving).

How it works: Adaptive Shift Scheduling uses a microprocessor to read signals from various sensors. it uses a complex algorithm and ongoing memory to decide when to shift. For example, high lateral acceleration during cornering may prevent shifting even if the accelerator is suddenly depressed or released. This helps avoid potential loss of tire grip due to load reversal. Shift points can be based on calibration curves in memory. Adaptive shift-quality control adjusts parameters that affect the speed and smoothness of the shift by interpreting data, including driveline feedback, from various sensors.

Customer benefit: Transmission shifting that is better suited to specific driver styles or operating conditions.

Ford status: Available on many North American vehicles.


Advanced (Smart) Restraint Systems       go back to Index List        Home

What they are: Smart restraints provide more consistent protection for people of different sizes and positions in various vehicle crash situations. Traditional safety belts and air bags are set up to provide protection for a range of occupants and conditions by deploying or restraining in a fixed manner. Advanced restraint systems consider variables such as occupant weight, seating position, safety-belt usage and vehicle deceleration to control belt forces and deploy the air bag optimally. Also, air bags would be designed to not deploy at unoccupied seating positions, where a rearfacing child seat is installed or when an occupant is out of the normal seating position (too close to the air bag).

How they work: A combination of sensors provides the computer with information about occupant position, occupant weight and seat track position. Accelerometers provide information about the collision. The computer uses this information to decide which restraints should be deployed and in what manner. Special hardware would be required to tailor deployment of restraints:

- Variable deployment air bag actuators allow air bags to fill at different speeds and to different volumes.

- Safety belt pretensioners tighten the safety belt at the beginning of a collision.

- Safety belt load limiters allow the safety belt to extend with high loads during a Collision.

Customer benefit: Potential for increased safety and comfort, reduced repair costs.


Advanced (Smart) Power Windows       go back to Index List        Home

What it is: Smart Power windows automatically stop closing and reverse direction when obstructions are detected in the path of the closing window.

How it works: A number of technologies may be used to sense an obstruction. One concept monitors electric current and/or torque of the window regulator motor. Certain changes detected in the electrical current signify an obstruction, stopping or reversing the direction of the window. Another concept detects obstructions with
a light curtain or infrared detector. The light curtain stops the motor before contact is made, further reducing potential for injury.

Customer benefit: Safety and convenience, particularly with features like one-touch closing, global window-closing or automatic closing of a moon roof when rain is detected.

Air Bags            go back to Index List         Home
What they are: Air bags are fabric bags that are filled quickly with a gas to provide supplemental protection for vehicle passengers during some collisions. Side-impact air bags are becoming increasingly available. Air bags are most effective in protecting vehicle occupants who are properly belted.

How it works: one or more sensors detect intensity and direction of vehicle deceleration during a collision. if there is sufficient acceleration and change in velocity in the direction of protection (frontal or lateral), appropriate air bags are deployed. Air bags begin to inflate within 20-25 milliseconds of impact.

Customer benefit: Improved occupant protection.

Ford status: Front driver and passenger bags standard on all cars and light trucks sold in North America. Side air bags available on '99 Cougar and Windstar, Explorer, Mountaineer, Continental and Town Car, and on other North American vehicles subsequently.

Anti-lock Braking System (ABS)       go back to Index List        Home

What it is: ABS keeps the wheels from fully locking up while braking to allow the driver to maintain steering control. Without ABS, too much force applied to the brake pedal can cause one or more wheels to stop turning (lockup) and begin skidding, greatly reducing the capability of the driver to steer. With ABS, maximum force on the brake pedal slows each wheel to the point of maximum braking - without skidding.

Since all wheels are still rolling, the driver maintains steering control within the limits of traction. Many light trucks use rear-wheel ABS to prevent rear wheel lockup.

How it works: ABS consists of an electronic control unit (ECU) with microprocessor, hydraulic control unit (HCU) with pump and motor (to modulate brake line pressure), and wheel speed sensors for each wheel. if a wheel begins to lock up during braking, the computer senses a speed difference compared to the other wheels. The HCU reduces pressure to that brake until it begins to roll again. This occurs many times per second during braking, making pumping of the brakes unnecessary. When the brake is applied firmly, each wheel is kept at maximum braking without locking up to help the driver make the best use of available traction.

Customer benefit: ABS provides the average driver with greater vehicle stability and control during severe braking, allowing the driver to steer away from a potential accident.

Ford status: Available on all cars and light trucks sold in North America.

Anti-submarining Seats       go back to Index List          Home
What they are: Anti-submarining Front of seats help reduce the risk of vehicle occupants sliding under the lap belt in a frontal collision and may help position the occupant's torso for more effective restraint by, the shoulder harness and by the air bag.

How they work: The seat cushion frame is designed with a ramp structure that slopes upward toward the front of the seat. in a collision, the ramp presses against the occupant's pelvis and thighs to help keep the lower body from sliding downward under the lap belt.

Customer benefit: increased protection in a frontal collision.

Ford status: Standard on many North American vehicles.

Automatic Ride Control       go back to Index List        Home
What it is: Automatic Ride Control adjusts vehicle shock absorber resistance (damping) in response to driver inputs such as steering and braking and for changes in road surface. During maneuvers such as hard braking or quick lane changes, the system increases suspension damping to improve dynamic stability. Damping is automatically decreased during steady driving, so that bumps and potholes are absorbed rather than being transmitted to the occupants. Some systems also allow the driver to select suspension settings: soft, normal or firm (sport).

How it works: Most systems use switchable-rate shock absorbers (dampers). Different sensors may be used depending on the complexity of the system.

- A basic System measures steering wheel position and braking. The computer adjusts the damping of all shock absorbers equally.

A road-calibrated suspension system, also known as semiactive suspension, measures the position of individual road wheels as well as driver Inputs. This type system (used on Continental and Taurus SHO) adjusts shock absorber damping independently for each wheel for the best combination of performance and ride. In vehicles equipped with a suspension-firmness switch, selecting a firm setting would cause the computer to choose heavy damping for most driving conditions, while the soft setting would result in light damping more often.

Customer benefit: Improved ride and handling, tailored to driver preferences.

Ford status: Available on many North American vehicles.

Auto Shift Manual Transmission and Select Shift Manual Transmission
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What it is: Select Shift Manual (SSM) and Auto Shift Manual (ASM) use a combination of Auto-Clutch and Shift-By-Wire electronic control system technology to provide the customer a fun-to-shift experience along with significant fuel economy improvements over a base manual transmission. The Select Shift Manual mode allows a customer to command gear changes according to his/her personal preference like a conventional manual transmission. The Auto Shift Manual mode provides the customer automatic gear shifting much like an automatic transmission.

How they work: Both the Auto-Clutch subsystem and ShiftBy-Wire subsystem use an electro-hydraulic or electromechanical actuation system controlled by a stand-alone transmission control module.

A customer requests a gear shift by using the appropriate driver interface mechanism (shift lever, push buttons, etc.). In place of the usual cable/linkage (which is eliminated), a sensor informs the controller of the requested gear shift. The controller processes the request and commands the actuators to open/close the clutch and disengage/engage the gear sequence with very fast response times. Engine torque is controlled during the shift either by controlling the throttle directly (Drive-By-Wire) or enabling ignition/fuel injection control to provide smooth shifts.

Customer benefit: Fuel economy improvement with fun-toshift convenience and shift mode flexibility.


Battery Saver       go back to Index List        Home
What it is: The battery saver feature automatically turns off interior lights in a parked vehicle after a few minutes to prevent the battery from being drained such as when a door is left ajar.

How it works: if interior lights are left on while the ignition key is in the off position, a relay will be deactivated in 10-40 minutes to turn off power to the interior lights.

Customer benefit: Helps avoid being stranded due to a dead battery.

Ford status: Available on all North American cars and trucks.

Coil-on-Plug Ignition       go back to Index List      Home  

What it is: A Coil-on-Plug ignition system uses one ignition coil for each cylinder attached to the spark plug. The system replaces remote ignition coils and high-voltage ignition wires in a distributorless ignition system.

How it works: 12 volts of power are sent to each cylinder at the appropriate time by the electronic engine control module. An ignition coil on each spark plug converts 12 volts to 30,000-35,000 volts to fire the plug. Each plug fires only during the compression stroke (except when cranking), unlike typical distributorless systems which fire a wasted spark during the exhaust stroke.

Customer benefits: More reliable and robust ignition system with a lower total weight.

Ford status: Available on most North American vehicles.

Continuously Variable Transmission (CVT)    go back to Index List       Home

What it is: A continuously variable transmission is an automatic that can select any desired drive ratio within its operating range. Unlike a traditional three-, four-, or fivespeed automatic transmission the CVT is an "infinite speed" transmission, the CVT continually selects an optimum overall drive ratio between engine and drive wheels for all operating conditions, whether accelerating or cruising. Unlike conventional automatics, there are no perceptible shifts. During maximum acceleration, the drive ratio Is adjusted to maintain peak engine horsepower. At a constant vehicle speed, the ratio is set to maintain an engine rpm which will support the required power. A CVT provides smooth, fast acceleration and high cruising efficiency with the convenience of an automatic transmission.

How it works: The most common CVT design uses a segmented metal V-belt running between two pulleys of variable diameter. Each pulley consists of a pair of cones that can be moved close together or further apart to adjust the diameter at which the belt operates. The pulley ratios are electronically controlled to select the best overall drive ratio based on throttle position, vehicle speed and engine speed.

Customer benefit: Performance, fuel economy improvement and smoother operation.


Delayed Accessory Power       go back to Index List         Home   

What it is: Delayed accessory power continues electric power temporarily to certain convenience features after vehicle power has been turned off. For example, the feature allows the customer to close a window without reinserting the key. Delayed accessories include radio and power windows, power moon roof and message center.

Delay time is up to 10 minutes after the key is turned off, as long as both front doors remain closed. Opening a front door turns off the delayed accessory power.

How it works: This system requires a timer and relay attached to some of the vehicle's electrical circuits. The timer activates a relay to close these circuits when appropriate. it opens the circuits (turning off power) when a front door is opened or the set time has elapsed.

Customer benefit: Increased convenience with accessories available for use after vehicle ignition key is removed.

Ford status: Available on many North American vehicles.

Digital Signal Processing Audio System       go back to Index List       Home     

What it is: A Digital Signal Processing (DSP) system modifies audio signals digitally to achieve better control of sound quality. DSP can be used for standard functions such as volume, balance, fade and tone control, as well as AM and FM stereo decoding. it also allows advanced audio processing such as concert hall emulation, sound shaping and adaptive noise reduction filtering.

How it works: DSP requires a digital audio signal. Analog audio signals (such as cassette tapes or radio broadcasts) must be converted to digital through a converter. Digital sources include compact discs. After processing, the digital codes must be converted back to analog to be amplified and sent to the speakers. Digital Signal Processing allows better/more consistent control over the audio signal, because processing is not dependent on material properties of linear circult elements (which can vary with environment). in addition, many standard radio functions can be combined in one integrated circuit. DSP also allows features which would not be practical with linear circuits (e.g., concert hall emulation which requires long delay times). Finally, DSP makes it easier to make software changes to tailor the product for customer needs.

Customer benefit: improved audio sound, consistent performance, additional feature content, including programmable features (tailored to specific customers or markets).

Direct Injection Engine       go back to Index List           Home  
What it is: Direct Injection (DI) refers to fuel injected directly into the combustion chamber above the piston. Direct Injection has long been used on large diesel engines. Smaller diesels are increasingly adopting direct injection (vs. indirect injection into a pre-chamber). Direct Injection also can be used in spark ignition (generally gasoline) engines instead of port fuel injection - for cleaner emissions, increased full throttle power and potentially for lean-burn operation.

Ref - Port Fuel Injection (PFI): By comparison, Port Fuel Injection (used spark-ignition engines) have injectors in the intake port near the valve. During the intake stroke, fuel sprayed into the port enters the combustion chamber along with the air charge.

Port Fuel Injection vs Direct Fuel Injection
Direct Injection: With Direct Injection Spark ignition (DISI) engines, fuel is injected in one of two ways depending on operating conditions. Lean burn operation (at part throttle), injects fuel after the air has entered, causing higher fuel concentration near the injector and spark plug for easy ignition. This is known as stratified charge. The overall air/fuel ratio is lean for better fuel consumption. At full power, fuel is injected at the same time as air (same as for conventional) to promote good mixing. Fuel evaporating in the combustion chamber cools the air slightly for higher volumetric efficiency and power. Since all fuel being injected goes directly into the cylinder, it can be metered more precisely, promoting cleaner emissions.

Customer benefit: Better fuel efficiency and more power.

Diversity Antenna       go back to Index List            Home

What it is: A diversity antenna system uses two antennas mounted at different locations on the vehicle and automatically chooses one that provides the better FM radio signal. The customer is therefore less likely to notice static or weak audio signals due to obstructions.

How it works: Power lines, traffic lights and buildings can cause local areas of weak FM signals. When driving through such areas, a listener might notice decreased volume or increased noise or static often when the vehicle is stopped for a traffic signal. With two antennas, there is a better chance that one will receive a clear signal. A circuit inside the radio automatically chooses the better signal.

Customer benefit: Better FM radio reception.


Double Locking       go back to Index List             Home
What it is: The double locking feature makes it virtually impossible for an intruder to open a locked vehicle door without key or remote transmitter (key fob), whether from outside or inside. Even after breaking a window, a thief could not unlock the doors and would have to enter through the window to attempt to steal the vehicle.

How it works: Double locking is activated by turning the key in a specific sequence (toward locked position twice within 3 seconds). With remote keyless entry (RKE), double locking is activated by pressing the "lock" button twice. Double locking is deactivated by unlocking the door, either with remote transmitter or the vehicle key. To reduce the Possibility of locking people in the vehicle, the double lock can be activated only when the ignition is off and the key removed.

Customer benefit: increased security for parked vehicles.

Ford status: Available in European vehicles, technology may become available in North America.

Drive-By-Wire       go back to Index List            Home

What it is: Drive-By-Wire means that one or more of the primary vehicle systems operate with electronic controls instead of a traditional mechanical linkage. An electronic signal transmits driver input to steering, throttle or brake input to an electronically controlled steering gear, throttlebody or brake system. "By-wire" can apply to the braking system (brake-by.-wire), steering (steer-by-wire) and transmission (shift-by-wire). It also can refer to a clutch or shift mechanism. An example of "drive-by-wire" is an electronically controlled throttle in which the computer controls the relationship between the accelerator pedal and throttle position to optimize actual throttle response. This can increase fuel economy, improve driveability and reduce emissions.

How it works: Drive-by-wire uses electronically controlled actuators with sensors to detect driver input. The electronic throttle system Senses driver input at the accelerator pedal. This signal commands the servo-actuated throttle body to control throttle position, using other information such as transmission shift schedules.

Customer benefit: Improved interior package due to smaller components, reduced weight and better reliability~ due to replacing mechanical hardware with electronic sensors, wires and actuators.


Driver Alertness Monitoring       go back to Index List             Home
Mat it is: Driver alertness monitoring is designed to detect when the driver's ability has become impaired, whether from inattention, drowsiness or intoxication. A simple system may merely sound an alarm. More complex systems could include warnings of impending collisions or that the vehicle is straying from the roadway.

How it works: Two methods are prop05ed to monitor driver alertness. One uses infrared cameras that detect eye motions and compute trends that track driver vigilance. Another monitors driver performance in maintaining the vehicle in its lane, using cameras which detect lane markers.

Customer benefit: Warns driver when not adequately alert.


Electrically Powered Steering       go back to Index List             Home
What it is: Electrically powered steering uses an electric motor to drive either the power steering hydraulic pump or the steering linkage directly. The power steering function is therefore independent of engine speed, resulting in significant energy savings.

How it works: Conventional power steering systems use an engine accessory belt to drive the pump, providing pressurized fluid that operates a piston in the power steering gear or actuator to assist the driver.

In electro-hydraulic steering, one electrically powered steering concept uses a high-efficiency pump driven by an electric motor. Pump speed is regulated by an electronic controller to vary pump pressure and flow, providing steering efforts tailored for different driving situations (see VAPS). The pump can be run at low speed or shut off to provide energy savings during straight-ahead driving (which is most of the time in most world markets).

Direct electric steering uses an electric motor attached to the steering rack via a gear mechanism (no pump or fluid). A variety of motor types and gear drives is possible. A microprocessor controls steering dynamics and driver effort. Inputs include vehicle speed and steering, wheel torque, angular position and turning rate.

Customer benefit: Energy savings/improved fuel economy and potentially better steering feel with reduced system complexity and improved system reliability.

Ford status: Production in North America on electric Ranger pickup, next-generation technology under development.

Electronic Air Suspension       go back to Index List             Home

What it is: Electronic Air Suspension provides the comfort of riding on air with adjustable spring rates and capability to change ride height and load-carrying ability. Under normal driving conditions, an electronic air suspension vehicle rides at the same height as a traditionally sprung vehicle. With a heavy load, ride height is increased automatically. On current vehicles, the suspension lowers the ride height by 20 mm at highway speeds for improved aerodynamics, with about 2 percent better fuel economy. Lower ride height also can improve on-center feel of steering due to the change in suspension geometry and increased caster angle. On Ford Expedition, the driver can lower the vehicle several inches for easier entry and exit (access mode).

How it works: Instead of a coil or leaf spring, each corner of the vehicle is supported by an air spring (bladder). Shock absorbers are still required. With a constant quantity of air, each air bladder acts similarly to a normal spring. To increase vehicle ride height, more air is pumped into the bags by a pump. Air is released from the bags to decrease the height.

Customer benefit., improved ride, handling and fuel economy with ease in entering and leaving tall vehicles.

Ford status: Available on '99 Expedition, Navigator and Explorer.

Electronic Automatic Transmission       go back to Index List            Home

What it is: An Electronic Automatic Transmission utilizes an electronic control module to signal when to shift. The module also determines when to lock and unlock the torque converter. By controlling these functions electronically rather than mechanically, the transmission can be tuned for better driveability.

How it works: Electronic Automatic Transmissions use computer-controlled solenoids to control primary functions (internal pressure, converter lockup, shift and clutch scheduling) through the transmission hydraulic system. By comparison, non-electronic transmissions rely on mechanical controls such as centrifugal weights and mechanical valves.

Customer benefit: improved driveability due to better control of transmission shifting.

Ford status: Available on all vehicles in North America.

Electronic Message Center       go back to Index List            Home

What it is: The Electronic Message Center displays text containing vehicle information and system warnings. The computer keeps track of fuel consumption, oil life, engine temperature, exterior lighting, charging systems and various fluid levels. if trouble arises in any of these areas, a message alerting the driver is displayed. in addition, a check can be performed by the driver on other vehicle systems such as automatic ride control.

How it works: A fluorescent or LCD text display is mounted in the center or overhead console or instrument cluster. A computer reads input from various systems; some systems are monitored continuously, others only during a systems check. if a problem occurs in any continuously monitored system, an appropriate warning (e.g., check taillamps) is displayed. other vehicle system problems are identified when a systems check is performed.

Customer benefit: Customer convenience and early problem identification.

Ford status: Available on many North American vehicles.

Electronic Messaging       go back to Index List            Home

What it is: Electronic Messaging provides traffic information and other warnings to the driver through an interface in the vehicle. Encoded traffic information is continually transmitted to the vehicle's FM radio. A dynamic warning information system being piloted in some regions could include warnings such as a train crossing, icy bridge, high wind, deer crossing or falling rocks. Its advantage is that current information (vs. blanket warnings) about specific hazardous conditions can be transmitted. Convenience information also could be displayed (e.g., parking, food, gas, lodging, intersections and other items of interest).

How it works: The Electronic Messaging System operates on various roadside-to-vehicle communication systems. Two-way communication is possible over short distances between the vehicle and antennas along the roadway and at parking areas. A Dedicated Short Range Communication system proposed as a standard for electronic toll collection also could be used for dynamic warnings. Other alternatives such as cellular telephone and FM radio band are being proposed for longer-di5tance communications.

Customer benefit: Improved convenience and safety with situation-specific information targeted to drivers.


Electronic Toll Collection       go back to Index List            Home

What it is: Roadway and bridge tolls can be paid automatically without slowing down. This eliminates lost time and relieves congestion at tollbooths.

How it works: A transponder mounted in the vehicle communicates by radio signals to antennas buried in the pavement or mounted at roadside. The appropriate fare is deducted by the transponder from a prepaid account. A typical unit on top of the dash or in the instrument panel is about the size of a deck of cards, with a display, keypad and an audio signal for instant account balance. As part of a vehicle to roadside communications system, the transponder also could send and receive other information. Standards such as Dedicated Short Range Communications (DSRQ are being developed for roadside readers and invehicle tags.

Customer benefit: Time savings and convenience when paying tolls.

Fail-safe Cooling System       go back to Index List             Home

What it is: A Fail-safe Cooling System allows a vehicle to be driven under limited power in the event that engine coolant is lost. In case of a ruptured hose, the engine operates in an emergency mode with limited power for driving a short distance (10-50 miles depending on the system). This eliminates the cost and inconvenience of having the vehicle towed to a service station and does not leave the customer stranded.

How it works: If the coolant level sensor reads below a critical amount, the engine computer module switches the engine to an emergency limp-home mode, in which only half the cylinders get fuel. With only half the cylinders firing, the engine generates much less heat because it is operating at low power. The cylinders alternate between even- and odd-firing pistons. The engine is able to move the vehicle at moderate speeds (Up to about 50 mph).

Customer benefit: Customer is not stranded in case of coolant system failure.

Ford status: Standard on many North American vehicles.

Frontal Collision Warning       go back to Index List            Home

What it is: A Frontal Collision Warning system warns the driver when it detects objects in the path of the vehicle; e.g., a vehicle slowing ahead. Some systems also apply braking to help avoid a collision. The collision warning system has several advantages over human performance in helping to avoid collisions. These include constant attention (e.g., to the vehicle ahead), and reacting more quickly to situations.

How it works: The vehicle is fitted with a forward-looking sensor (such as radar or laser), similar to one used for Adaptive Cruise Control. A camera may also be used for additional input. The combined information provides a reliable picture of the road ahead, and may be used to support other functions such as vision enhancement.

Customer benefit: Reduced risk of a frontal collision due to inattention or conditions with poor visibility.

Fuel Cell       go back to Index List            Home

What it is: A fuel cell is an electrochemical device that converts chemical energy from hydrogen (or other fuel) and an oxidant into electricity. Electricity from fuel cells will power electric motors at each wheel of future vehicles. Fuel cells consist of a fuel supply (typically hydrogen), an oxidant (typically oxygen from air), two porous electrodes (anode and cathode), and an electrolyte (between the electrodes). A catalyst (e.g., platinum) speeds up reactions. A single fuel cell is several millimeters thick. To power a vehicle, fuel cells are connected in series to provide appropriate operating voltage.

Porous Anode Hydrogen Catalyst
OVERALL ELECTROCHEMICAL REACTION: 2H2 + O2 -> 2H2O + ELECTRICITY
How it works: Fuel cells combine hydrogen and oxygen to produce electricity and water. In a typical fuel cell, hydrogen fed to the anode is catalytically oxidized to produce hydrogen ions (H+) and electrons (e-). Electrons flow through an electrical load (e.g., electric motor) into the cathode. Hydrogen ions flowing from anode through electrolyte to cathode complete the circuit. Oxygen fed to the cathode combines with hydrogen ions and electrons to produce water. Hydrogen fuel can be stored on-board the vehicle as compressed gas, cryogenic liquid or metal hydride. it also can be re-formed from a liquid fuel such as methanol or gasoline.

Customer benefits: An environmentally friendly vehicle that doesn't deplete fossil fuel reserves. A direct hydrogen fuel cell-powered vehicle would be a true zero-emission vehicle, water being the only by-product. And there is a virtually unlimited potential supply of hydrogen to be distilled from water (although currently very costly). While a fuel cell vehicle powered by converted gasoline or methanol would not have true zero-emissions, its projected fuel economy would be two and a half times that of a conventionally powered vehicle.


Global Window Opening/Closing       go back to Index List           Home

What it is: Global window operation allows all the vehicle's windows to be opened or closed with a single command from outside the vehicle. In its simplest form, the key is inserted in the door and turned past the lock position to close all windows and the sunroof. other options for opening or closing are the key fob or one-touch operation.

How it works: Whether activated by switch or remote, a relay closes all motor circuits to simultaneously open or close the windows. in the case of one-touch operation, the relay remains closed long enough for all the windows to open or close. If the vehicle has multiplex wiring, a signal is sent to each window motor. Advanced (smart) window regulators must be fitted to reverse the window motors safely in case of an obstruction.

Customer benefit: Greater convenience.

Heads-up Display       go back to Index List          Home 

What it is: The Heads-up Display (HUD) system allows the driver to view pertinent vehicle information without looking away from the road. Gauge and indicator images are projected on the windshield in front of the driver. HUDs typically include (at a minimum) turn signal indicators, high beam indicator and a warning to check gauges. These gauge and warning displays can be turned off when desired to minimize the possibility of distraction. Systems can be designed to display other heads-up information, vehicle speed being the most common addition.

How it works: The display information is produced in an area within the instrument panel, It is projected (through a series of lenses and mirrors) upward through a small window on the top of the instrument panel onto the windshield. A special coating on a portion of the windshield may be used to properly reflect the information toward the driver.

Customer benefit: Potentially greater safety and convenience because the driver does not have to look down at the instrument panel as often to view vehicle gauges.


High Intensity Discharge Headlamps       go back to Index List            Home

What they are: High Intensity Discharge (HID) headlamps provide a brighter, whiter light for increased forward visibility. They produce about 2 1/2 times as much light as conventional halogen bulbs and have a distinct appearance. Also, they are more durable than filament bulbs and require 37 percent less power to operate.

How they work: HID headlamps use electrical energy to excite a metal halide. A quartz glass capsule, filled with xenon gas, receives a momentary high-voltage charge from an integral ignitor, causing an arc between the two electrodes to light. Once the arc is stabilized, it runs at 80 volts, supplied by a remote ballast. A reflector housing and lens direct the light at the roadway. Discharge fighting has been used in street lamps and stadium lighting for decades, but the technology is relatively new to automobiles.

Customer benefit: Better night visibility, increased headlamp durability, increased safety and improved styling.

Ford status: Available on many North American vehicles.

Infinite Door Check       go back to Index List          Home  

What it is: The infinite Door Check (IDC) is a mechanicalhydraulic device designed to hold the door open at any position along its swing path. Traditionally, vehicles equipped with mechanical door checks (or detents) hold the door only at half open or fully open positions; the door will not stay in place at other positions. Infinite Door Check, by holding the door open at any position, enables customers to protect their own vehicle and avoid denting or chipping the paint of adjacent vehicles in tight parking spaces. it also allows the occupant to position the door at any convenient position when entering or exiting, even when the vehicle is parked on an incline.

How it works: The IDC makes use of a phenomenon called stiction. Stiction is defined as the ratio of static to dynamic friction. The IDC mechanism utilizes patented valving technology to amplify the dynamic force to overcome static friction, which makes the door easy to move once it is in motion, but holds the door position when it is released or stopped.

Customer benefit: Easier entry and egress from the vehicle, and reduced likelihood of damage to the door edge or to adjacent vehicles.


Interactive Vehicle Dynamics (IVD)       go back to Index List            Home
What it is: Interactive Vehicle Dynamics is designed to minimize loss of vehicle control due to loss of traction. The IVD system could be activated when a vehicle is taking a turn too quickly or when encountering an icy patch.

How it works: The system compares the driver's intended direction (from the steering wheel angle) to the actual vehicle path, which is inferred from accelerometers and wheel-speed sensors. if the actual path is different from that intended (e.g., when the vehicle is understeering or oversteering or on slippery roads), the IVD controller applies braking at selected wheel(s) and reduces engine torque if required to correct. the situation. The system is designed to make the best use of available traction to keep the vehicle on the intended path and minimize loss of control.

Customer benefit: increased driver control, handling, performance and safety.


Intelligent Vehicle Highway System (IVHS)       go back to Index List        Home    

What it is: The Intelligent Vehicle Highway System (IVHS) provides a variety of information to the vehicle and driver through cooperation of automotive electronics, communications, controls and systems engineering technologies. IVHS has two areas of interest to car and truck makers: (1)telematics and (2)active safety warning and control systems. Several features have been identified:

Telematics: Navigation systems Traffic messaging Emergency messaging and security tracking (e.g. RESCU - Remote Emergency Satellite Cellular Unit) Short range communications/ automatic toll collection Active Safety Warning and Control Systems Collision warning/avoidance - Backup and parking aids - Side vision aid - Vision enhancement

(all weather/night vision)

- Lane departure control

• Many features could share technologies or components. Some are described separately in this guide.
  
  Customer benefit: increased comfort and safety through exchange of real-time information on highway conditions and vehicle operating environment.
  
  
  Lean Burn Engine       go back to Index List            Home
  
  What it is: A lean burn engine is designed to operate with a very lean air-fuel ratio during light load conditions. Most modern gasoline engines are controlled to run at a chemically correct (stoichiometric) air fuel ratio (about 14.7:1) to make the three-way catalyst operate at high efficiency, reducing tailpipe emissions. Lean burn engines mix more air with the fuel when full power is not needed, resulting in better fuel economy. Air/fuel ratio in lean burn engines can be as high as 20:1. When full power is needed, such as during acceleration or hill climbing, a lean burn engine reverts to a stoichiometric (14.7:1) ratio or richer.
  
  How it works: A very lean mixture of air and gasoline will not ignite as easily as a stoichlometric mixture when a spark is introduced. Several methods can be employed to achieve lean burn, including high temperature, high turbulence and stratification (high concentration of fuel vapor near the spark plug). Lean burn engines are often designed with high intake swirl to increase turbulence. Direct injection is one way to provide stratification. Since more air is taken in, the throttle plate can be opened wider for a given power, and losses associated with pumping are reduced. Lean operation also results in higher combustion efficiency and lower heat losses for better fuel economy.
  
  Note: Current three-way catalysts are designed to optimize NOx reduction at close to stoichiometric ratio. Lean burn engines generally cannot meet strict NOx emissions standards using a three-way catalyst; additional NOx controls are necessary.
  
  Customer benefit: Better fuel efficiency without sacrificing engine power.
  
  
  Low Tire Pressure Warning       go back to Index List           Home 
  
  What it is: A low tire pressure warning system alerts the driver if the air pressure in a tire becomes too low. Typically, a light on the instrument panel will be illuminated to warn of the low-pressure condition.
  
  How it works: Two common implementations exist for this warning. The first uses pressure sensors in each wheel to periodically transmit pressure data to a receiver in the vehicle. if the tire pressure falls below a set level, a warning light is illuminated. in some applications, the pressure in each tire can be read inside the vehicle. The pressuresensing system is particularly useful for vehicles with run-fiat tires that do not go flat when losing pressure.
  
  Another implementation uses four-wheel anti-lock brake hardware, including wheel-speed sensors and a computer that processes the signals. If a tire has low pressure, it will turn faster than the other wheels. Wheel speed differences are used to detect low pressure, and a warning light will alert the driver in approximately three miles.
  
  Customer benefit: Automatically alerts drivers to low tire pressure.
  
  Ford status: Available on RESCU System.
  
  Memory Profile System       go back to Index List            Home
  
  What it is: The Memory Profile System offers different drivers the ability to set into memory their preferred positions for several comfort and convenience features. A driver is identified by a unique key fob or entry code, and the vehicle systems automatically adjust to his or her settings. Depending on the vehicle, some of the following features can be included in the memory profile: Seat position Steering wheel position (tilt/telescope) Mirror positions Safety belt "D" ring height Pedal positions Radio stations Power steering assist level Ride firmness
  
  Additionally, the profile can include features desired to be inactive or active, such as automatic door locking.
  
  How it works: A driver records a personal profile by first adjusting everything in the vehicle the way he or she likes it. Pressing and holding a numbered memory button on the door records the profile onto a computer chip. Additional drivers can set their own preferences. Later, the driver can restore the vehicle to personal preferences by touching the numbered button or with a specific key fob or keyless entry code. Various actuators are required to adjust the settings on the vehicle systems.
  
  Customer benefit: improved comfort and convenience.
  
  Ford status: Available on '99 Continental and Town Car.
  
  
  Multiplex Communication       go back to Index List           Home 
  
  What it is: Multiplex Communication permits electronically controlled components such as sensors, actuators and modules to share information by transferring digitally encoded data on a wire or optical bus. Multiplexing could eliminate a great deal of vehicle wiring and may eliminate redundant sensors and actuators.
  
  How it works: The multiplexing system consists of a network of computer-based modules and their local sensors and actuators. When components need to communicate, a digital signal is transmitted on the multiplex bus as digitally encoded information. An example may be found in the power cloor-lock/winclow system. On conventional systems, control switches on the driver's door are wired directly to actuators in other locations, resulting in numerous wires running through the driver's door. in a Multiplex system, a door module transmits required information and/or commands on the bus media (wire or optical fiber) to operate the appropriate actuator. For example, when the power window switch on the driver's side is pressed to open the passenger-side window, a digitally encoded signal is transmitted to the passenger-window motor module-as opposed to directly closing the window motor circuit as with a conventional system.
  
  Customer benefit: Greater reliability due to less wiring along with reduced cost and weight. Multiplexing also provides a central point diagnostic vehicle connection via a single connector. This provides a rapid and uniform means for the diagnostic technician, potentially allowing for better vehicle diagnostics and reduced warranty costs.
  
  
  Navigation System       go back to Index List            Home
  
  What it is: in-vehicle navigation provides directions to a destination. Instructions can be delivered by voice, graphic icons such as arrows, a scrolling video map or a combination. To begin, the driver inputs a desired destination. The computer accesses a database and plans the route. Instructions are fed to the driver as the vehicle approaches pertinent intersections. if the driver deviates from the intended route, the computer selects an alternate route and delivers new instructions.
  
  How it works: For a navigation system to deliver timely instructions, the computer must know the location of the vehicle. Usually, a Global Positioning System (GPS) receiver in the vehicle is used for this. in some systems, dead reckoning is used, either on its own or in conjunction with GPS. Dead reckoning uses wheel speed sensors and/or accelerometers to infer vehicle movement and track the location of the vehicle. Dead reckoning, when used with GPS, improves accuracy and provides more precise route instructions than GPS alone. Once the current, or starting, point and destination are known, the computer accesses a street-map database to plan the route. The data can be stored on-board the vehicle in a CD-ROM or off-board 'in a remote computer. A potential advanced feature option is when up-to-the-minute traffic information is accessed from a central location to plan the best route.
  
  Customer benefit: Convenience and security.
  
  
  Passive Anti-Theft System       go back to Index List         Home  
  
  What it is: Passive anti-theft systems (PATS), like Ford's patented SecuriLock T" systems, protect against theft by requiring a specially coded ignition key. The vehicle starts and operates only with the key that matches the sensor in the vehicle, thwarting attempts to hot-wire the ignition. An indicator lamp shows the system is working.
  
  How it works: A miniature transponder with integrated circuit and antenna is embedded in the ignition key. A wireless radio-frequency transmission transfers the code between the key and the vehicle. If the codes match, the module sends a signal through the wiring system to the engine electronic control, allowing the engine to start. There are 72 million-billion possible codes, so every Ford sold worldwide for the next 10 billion years could have a unique code. New keys for replacements or spares can be encoded by dealerships.
  
  Customer benefit: increased protection against vehicle theft.
  
  Ford status: Standard on most North American vehicles.
  
  
  Photovoltaic Panel       go back to Index List             Home
  What it is: Photovoltaic panels contain cells that convert sunlight into electricity. While solar-powered vehicles are not currently feasible for production, solar panels could be used to power vehicle components, such as a fan to exhaust hot interior air when the vehicle is parked in the sun or to recharge the vehicle battery. Photovoltaic panels can be integrated into the hood, roof, sunroof, deck lid or spoiler.
  
  How it works: Photovoltaic cells use energy from incoming photons to excite electrons. These electrons produce a very small amount of electrical energy in the cell. Power produced depends on the total cell area; many cells are required to run a small electric motor or to trickle-charge the battery. Modern solar cells are able to convert about 40 percent of the energy of sunlight to electricity.
  
  Customer benefit: Supplemental power source for additional customer features, resulting increased fuel economy.
  
  Remote Control Convenience Features       go back to Index List           Home 
  
  What it is: This system allows vehicle owners to control certain functions of their automobiles by calling an automated service with a touch-tone phone. Functions can include opening or closing windows or sunroof, unlocking doors, disabling the engine (in case of vehicle theft), or other functions. The service also could be used to flash lights or sound horn to find a parked vehicle, set the vehicle clock, or configure certain features.
  
  How it works: The vehicle owner calls an automated voice response system with a touch-tone phone, enters a personal identification number (PIN) and selects the desired function from the Menu. A pager signal is sent to a receiver in the vehicle, and the vehicle controller executes the requested function. Paging technology also allows text messages sent from a telephone or computer to be displayed in the vehicle.
  
  Customer benefit: increased convenience and vehicle security; theft deterrent and vehicle recovery.
  
  Remote Lighting System       go back to Index List            Home
  
  What it is: The Remote Lighting System removes the sources of light from the lamp fixture. instead, light for all fixtures is generated from a single "light battery". Light is transmitted to the various fixtures and accessories via fiber optics or light pipes. The advantages of remote lighting include reduced power consumption, greater durability and more flexibility in packaging and styling lamp fixtures.
  
  How it works: A halogen bulb or a high-efficiency light source (high-intensity discharge light) is located in a light collector assembly. There are several possible configurations
  
  One is the multibeam setup pictured, in which the remote-lighting system controls one function. Another concept is central lighting, in which light from a single remote source is distributed to perform multiple functions (headlamps, turn signals, etc.) and controlled by light valves.
  
  Customer benefit: Increased lighting efficiency and reliability, styling flexibility.
  
  
  Reverse Aid/Parking Aid       go back to Index List           Home  
  
  What it is: Reverse Aid/Parking Aid is a short-range collision-warning system to aid in reversing and parking maneuvers. As the vehicle approaches pedestrians or other vehicles or obstacles, beep warning sounds. The frequency of beeping increases as the obstacle is neared, until it becomes a solid tone when the vehicle is closer than a set distance (about 8 inches). Reverse Aid uses rear sensors only. Parking Aid uses front and rear sensors.
  
  How it works: Low-cost, high-performance sensors such as ultrasonic range sensors are fitted to the vehicle. Generally, more than one sensor is Used to form a detection zone as wide as the vehicle. A microprocessor monitors the sensors and emits a signal to help the driver reverse or park.
  
  Customer benefit: Easier and safer reversing and parking maneuvers, especially for vehicles where drivers have limited view at the front, rear or corners of the vehicle.
  
  Ford status: Reverse Aid is available on '99 Windstar, Explorer and Mountaineer. Next-generation technology under development.
  
  
  Safety Belt Pretensioner       go back to Index List           Home
  
  What it is: A Safety Belt Pretensioner tightens the belt in the first milliseconds of an accident to better keep the occupant in position. With a tightened belt, an occupant is less likely to strike interior surfaces such as the roof or steering wheel. It also may restrain the occupant from contacting the air bag before it is fully deployed, further reducing the risk of injury.
  
  How it works: A collision sensor, often the same sensor used to trigger the air
  bags, detects the beginning of a collision. A signal from the sensor activates a
  pyrotechnic pretensioning device at a safety-belt anchoring point. The pretensioner takes up slack in the belt system until a predetermined force is reached. The belt remains tight around the occupant for the duration of the collision.
  
  Customer benefit: Increased safety for belted occupants.
  
  Ford status: Available on 1999 Ford Econoline and will be available on additional vehicles.
  
  
  Side Vision Aid (Blind Spot Detection System)      go back to Index List          Home 
  
  What it is: Side Vision Aid alerts the driver if another vehicle is in the blind spot when changing lanes. Blind spots are the obscured areas immediately to the left and right sides of vehicles, behind the driver's peripheral view. When the signal, an indicator, typically located on the side-view mirror, signals whether a vehicle is in the blind spot. The side vision aid supplements the driver's view to the side and rear from windows and mirrors, to permit safe lane changes.
  
  How it works: Active infrared detectors are mounted on each side of the vehicle such as near tail-lights or side mirrors. These detectors "look" into the next lane to see if a vehicle is there. When the driver activates the turn signal, an indicator (usually an LED) appears, indicating whether the lane is occupied or unoccupied or that the system has malfunctioned.
  Customer benefit: Potential increase in safety and accident avoidance when changing lanes.
  
  
  Smart Wipers       go back to Index List          Home   
  
  What they are: Smart Wipers are windshield wiper systems that can determine when and how the windshield wipers operate, based on moisture on the windshield. Smart wipers do not require the driver to continually adjust wiper speed or delay interval. This system is an enhancement to vehiclespeed-dependent interval wipers (which increase the frequency of strokes with vehicle speed.)
  
  Light looksource works as shown in the diagram. When moisture is detected on the windshield, the controller starts the wipers, continually selecting appropriate wiper settings depending on Windshieldmoisture measured.
  
  Detector LightCustomer benefit: increased safety and convenience through reduced driver adjustments.
  
  Split-Port Induction (SPI)         go back to Index List             Home
  
  What it is: Split Port induction uses two intake runners leading to a single port and intake valve for each cylinder. One of the runners is open at all engine speeds, while the other opens only at higher speeds. This allows increased mixing of the intake charge at lower engine speeds, with unrestricted engine breathing at high speeds. Peak power is increased while fuel economy, emissions and cold startup are improved during normal operation.
  
  How it works: The lowspeed intake ports are located low in the head, creating a tangential flow path into the cylinder. The geometry produces a high degree of swirl, more effectively mixing the air and fuel for combustion. At higher engine speeds (above 2,500-3,000 rpm) butterfly valves open (see Illustration) for airflow through both ports. The high-speed ports can be tuned for efficiency.
  
  Customer benefit: increased power, better emissions and improved fuel economy.
  
  Supercharger       go back to Index List          Home  
  
  What it is: A Supercharger is an air pump or compressor that forces pressurized air into the cylinders during the intake stroke of the engine. increased density intake air, along with additional fuel, increases power. The term Supercharger is generally applied to engine-driven compressors, but also can include exha ust-gas-d riven turbochargers. Mechanical Superchargers do not have the lag associated with turbochargers.
  
  How it works: Mechanically driven Superchargers receive power from the crankshaft via a belt or chain-drive. The supercharger mechanism can be a positive displacement type (Roots or scroll compressor), or airfoil based (centrifugal compressor). Since the supercharger speed is proportional to engine speed, pressure builds instantly, giving power on demand. operating a Supercharger continually can hurt fuel economy, so some Superchargers have a clutch to disengage the compressor when high power is not demanded.
  
  Customer benefit: increased power on-demand for a given engine.
  
  
  Theater Lighting/Illuminated Entry       go back to Index List          Home   
  
  What it is: Theater Lighting is an enhancement to the illuminated entry feature. illuminated entry can turn on interior lights when; a door is opened, the remote key fob transmits an unlock signal, or the customer lifts a door handle. Theater lighting: 1) ramps up the lights when the door is opened, 2) keeps lights on for about 20 seconds after the door is closed and 3) dims the lights gradually - over a period of about two seconds.
  
  How it works: An electronic circuit detects the various signals that turn on the interior lights. With Ford's implementation of Theater Lighting, the circuit sends power to the lights according to the profile shown in the illustration below. Other illuminated entry features remain unchanged.
  
  Customer benefit: A more pleasant and dramatic entry and exit experience.
  
  
  Traction Control System       go back to Index List         Home  
  What it is: Traction Control is designed to prevent a vehicle's wheels from spinning on slippery surfaces. It shares many of the mechanical and electronic elements of anti-lock brakes. Each wheel "searches" for optimum traction several times a second and adjustments are made accordingly. All-speed traction control is designed to prevent wheel spin by reducing engine output in conjunction with electronic brake application. Traction Control is intended as a driver aid which allows a vehicle to make better use of available traction on slippery surfaces.
  
  Another system, traction assist, works below 25 mph. it is used primarily to avoid wheel spin while accelerating from a stop on slippery surfaces. This system does not reduce engine output, but relies on electronic brake application for spin control.
  
  How it works: A computer detects wheel spin by reading relative wheel speed difference between driven and nondriven wheels. Wheel spin is controlled by one or a combination of the following:
  · Brake application at one or more wheels
  · Closing the throttle
  · Retarding the spark
  · Fuel cutout
  · Leaner air/fuel ratio These actions reduce the torque of any spinning wheel to improve traction.
  
  Customer benefit: Better use of available traction on slippery surfaces.
  
  
  Turbocharger       go back to Index List             Home
  What it is: A Turbocharger is a type of Supercharger that is powered by engine exhaust gas. It increases engine power by pressurizing intake air into the cylinders.
  
  How it works: Turbochargers are centrifugal compressors powered by an exhaust gas-driven turbine. The turbine and compressor are on opposite ends of single rotating shaft fitted in the turbocharger housing.The shaft runs at speeds up to about 100,000 rpm. An advantage over themechanically driven supercharger is better fuel efficiency because it does not use direct crankshaft power. The disadvantage of the turbocharger is turbo-lag (slow speedup of the compressor from a closed throttle), resulting in longer time to boost compressor pressure and slow engine response. Some customers dislike this lag.
  
  Customer benefit: increased power.
  
  
  Variable Assist Power Steering       go back to Index List            Home
  What it is: Variable Assist Power Steering changes the power assist depending on vehicle speed. At low speeds, steering assist is greater, resulting in lower efforts for lowspeed turns and parking. At freeway speeds, assist is reduced, resulting in relatively higher efforts for better road feel from the steering wheel. Some Systems, such as that used on Continental, allow the driver to select among different steering-assist modes (levels).
  
  How it works: Most production power steering systems use a hydraulic pump driven by the engine. To reduce the power assist, the flow of power steering fluid to the steering gear is restricted. Some systems can switch between two flow levels for low or high assist. Other systems have multiple levels to provide smoother transitions and better steeringfeel at intermediate speeds. An alternative to 40 -restricting fluid flow is an 35 -electricity-powered 30 -system which also can provide multiple levels of steering.
  
  Customer benefit:   Combination of reduced steering effort and good road feel.
  
  
  Variable Valve Timing       go back to Index List             Home
  What it is: Variable Valve Timing allows the point at which an engine's valves open and close to change with operating conditions - such as engine speed and throttle position. in addition to changing the valve timing with respect to the crankshaft, some systems also change the duration the valve is open and the extent to which it opens. Varying these parameters allows the engine to operate more efficiently at all engine speeds while maintaining driveability.
  
  How it works:
  Traditionally, camshafts open and close intake and exhaust valves at fixed points in the engine cycle regardless of engine speed or throttle position. Variable Valve Timing can employ several mechanisms to change valve opening and closing. it can affect either the intake valves and/or the exhaust valves, depending on the design. Some methods include advancing or retarding the cams or valves or activating additional camshafts or rocker arms.
  
  customer benefit: Improved power, fuel economy and emissions (depending on the system).
  
  Ford status: Exhaust-phase shift variable car timing featured on Zetec engines in Escort ZX2, Contour and Mystique. Nextgeneration technology under development.
  
  
  Vehicle Emergency-Messaging System (VEMS)       go back to Index List       Home
  
  What it is: This system allows the driver to push button in an emergency to contact a service center. Ford's system, first installed in the Continental, is called Remote Emergency Satellite Cellular Unit (RESCU). The system allows the occupants to talk to a service center representative via cellular phone and transmits the following information:

  · Type of alarm (roadside assistance or medical emergency)

  · Vehicle identification number

  · Vehicle location

  · Last recorded speed and direction of the vehicle

  · Time associated with the last recorded position

  - Call-back number of the vehicle's cellular phone

  The voice channel allows the center to:
  · Maintain direct voice contact until emergency help arrives
  · Notify pre-designated family contacts or friends in case of emergency
  - Provide estimated time of arrival of roadside assistance
  - Call back to confirm resolution of the problem
  
  A possible enhancement to VEMS is automatic activation of the system when the vehicle's air bags are deployed.
  
  How it works: The RESCU system includes a cellular telephone that dials the RESCU Response Center in Irving, Texas. Vehicle location is determined through a global positioning system (GPS) receiver in the vehicle. Vehicle position and speed are continuously fed to the RESCU computer, which determines the direction of the vehicle. RESCU can be manually activated through one of two buttons on the overhead console, one for roadside assistance, the other for police or medical emergency. Some systems include automatic activation when an air bag is deployed. Once the system is activated, a voice channel is opened while data are transmitted to the center and displayed on the computer of the person at the service center who talks to the driver. if the driver is unable to speak, the emergency is immediately relayed to 911. The driver can press a cancel button if the system is activated by mistake.
  
  Customer benefit: Safety and security.
  
  Ford status: RESCU available on Lincoln Continental. Nextgeneration technology under development.
  
  
  Vision Enhancement System
  (All-Weather/Night Vision)                    go back to Index List             Home
                      go back to Index List             Home
  
  What it is: All-Weather/Night Vision provides the driver with information about objects in the path of the vehicle that could not normally be seen at night or in adverse conditions. It is especially helpful for identifying pedestrians and animals crossing in front of the vehicle. Some systems also can display information about the roadway, such as the proximity of upcoming vehicles and changes in the road. The information is generally displayed in the driver's normal field of vision.
  
  How it works: All-Weather/Night Vision systems can use radar or infrared lights/receiver on the front of the vehicle. Data are fed into a computer which continually processes the information and creates an image displayed in front of the driver. Potential capability includes ability to distinguish between other vehicles or obstructions and non-threatening objects, reducing the possibility of false alarms.
  
  Customer benefit: Safety and improved vision at night or during adverse conditions.
  
  
  Voice Activation       go back to Index List            Home
  
  What it is: Voice-activated control systems allow the occupants to use voice commands to control a variety of vehicle systems and features. Voice activation works with such features as cellular telephone, audio system, navigation, climate control and other electronically controlled systems. At present, primary controls and those crucial to safety are not candidates. Voice-activation systems can reduce accidents by minimizing the time the driver's hands are off the wheel and eyes are off the road.
  
  How it works: Voice-activated control systems interface with other systems through multiplexing networks. Voice commands are processed by the computer and an appropriate signal sent to the commanded device. The system is designed to work with any spoken voice, without requiring training for each user. By comparison, current voice-activation systems for cellular phones are able to recognize only a small number of commands and must be trained to recognize the voice of the user.
  
  Customer benefit: Potential safety advantage and improved convenience.
  

Copyright © 1985-2004 Auto World / VIS. All rights reserved. *Values are subjective opinions based on the Staff of NABA / VIS and recent market conditions. National Automobile Bankers Associates / Vehicle Information Services is not responsible for actual or claimed deviation. Copyright 1993-2004 NABA/VIS. Auto World a service of VIS. 727.502.0131