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Topic: Antilock brake controller

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	Antilock Brake System: How Products are Made
		If, however, the brakes are being applied and one or more of the monitored wheels suddenly begins to reduce speed at a higher rate than the others—indicating a loss of traction with the road and an imminent wheel lockup and skid—the controller then activates the antilock system.
		The antilock brake system on a truck works in a manner similar to the ABS on an automobile, except the antilock air pressure control valves are located on the vehicle frame rail, near each wheel.
		In addition, all antilock brake systems are designed to be fail-safe—that is, any failure of any component will cause the system to fail in such a manner as to still allow the overall safe operation of the brakes.
	www.enotes.com /how-products-encyclopedia/antilock-brake-system (2339 words)

	Antilock brake device for vehicles - Patent 4792194
		The antilock brake device of claim 29 wherein said modulator is arranged outwardly of said enlarged recess of said wheel hub at the inlet of said enlarged recess, said pump shaft extending outwardly of said enlarged recess to said modulator.
		The antilock controller 7 is functionally interposed in the hydraulic conduit 15 coupled between the output port 5fa of the cylinder 5f and the input port 14a of the caliper 14.
		In the brake device thus constructed, the flywheel 72 of the antilock controller 7 and the gear unit 45 are arranged in the hollow portion of the hub 8 which would otherwise be a wasted space.
	www.freepatentsonline.com /4792194.html (9384 words)

	Antilock Brake System: How Products are Made
		If, however, the brakes are being applied and one or more of the monitored wheels suddenly begins to reduce speed at a higher rate than the others—indicating a loss of traction with the road and an imminent wheel lockup and skid—the controller then activates the antilock system.
		The antilock brake system on a truck works in a manner similar to the ABS on an automobile, except the antilock air pressure control valves are located on the vehicle frame rail, near each wheel.
		In addition, all antilock brake systems are designed to be fail-safe—that is, any failure of any component will cause the system to fail in such a manner as to still allow the overall safe operation of the brakes.
	science.enotes.com /how-products-encyclopedia/antilock-brake-system (2339 words)

	Patents in Class 303/115.6
		An antilock brake device for vehicles including a sensor for sensing the possibility of wheel lock during braking by means of overrunning rotation of a flywheel interlocked with the wheel to produce an output and a hydraulic controller f...
		A rear wheel braking apparatus for a motorcycle wherein a rear fork with a rear wheel pivotally mounted on the rear end thereof is coupled to the frame of the motorcycle via a pivot shaft in a vertically swingable manner; a rear wheel dr...
		A brake device for vehicles comprises a master cylinder, a wheel brake adapted to be operated by the output hydraulic pressure from the master cylinder to apply a braking force to a wheel, and an antilock control unit, having therein an...
	www.freepatentsonline.com /CCL303-115.6.html (1877 words)

	Antilock Brake System (ABS) Test - Industries and Applications - National Instruments
		The PCI-6533 outputs digital "braking patterns" to an ABS controller unit.
		The controller unit's response is monitored with the SCXI 1140 and PCI-MIO-16E-4.
		The results chart the ABS controller unit's ability and rate of response to braking patterns.
	www.ni.com /automotive/tires_comp1.htm (97 words)

	How antilock brake system is made - Background, Design, Raw materials, The manufacturing process of antilock brake ...
		How antilock brake system is made - Background, Design, Raw materials, The manufacturing process of antilock brake system, Quality control
		Each speed sensor usually has a toothed wheel that rotates at the same speed as the vehicle wheel or axle.
		If the brakes are applied and one or more of the monitored wheels suddenly begins to reduce speed at a higher rate than the others, the controller activates the antilock system.
	www.madehow.com /Volume-2/Antilock-Brake-System.html (2425 words)

	Crown Victoria Optional Equipment TidBits
		But since the eatc blower speed controller is physically larger than the manual one, it's possible to enlarge the hole in the evaporator housing case and drill two new mounting holes for the retaining bolts.
		But manual control vics have the hole cut in the firewall for the hose and the hole cut in the box too, all that you'd need would be the $3 adapter and a couple screws from ford.
		On the topic of wiring for 1995+ crown vics, the abs control module wiring is integrated into the 14290 dash to headlamp harness, but the rest of the wiring is the same between a car that is abs equipped and one that is not.
	www.p71interceptor.com /optionalequipment (6373 words)

	Kelsey-Hayes RWAL Help, Larry Carley, Tire Review, August 1998
		The conventional master brake cylinder and power booster supplies brake pressure to the EH valve, which contains two solenoid valves: a normally open isolation valve to block pressure from the master cylinder to the rear brakes during antilock braking, and a normally closed dump valve for relieving pressure in the rear brake circuits.
		When the ABS control module detects a difference in the average speed of the rear wheels compared to the vehicle's overall speed, it initiates antilock braking.
		The control module that regulates the operation of the ABS solenoid valves is separate from the control valve, and is located next to the master cylinder on some applications.
	www.babcox.com /editorial/tr/tr89850.htm (2219 words)

	Howstuffworks "How Anti-Lock Brakes Work"
		There is a valve in the brake line of each brake controlled by the ABS.
		The ABS controller knows that such a rapid deceleration is impossible, so it reduces the pressure to that brake until it sees an acceleration, then it increases the pressure until it sees the deceleration again.
		Pumping the brakes is a technique that is sometimes used in slippery conditions to allow the wheels to unlock so that the vehicle stays somewhat straight during a stop.
	www.howstuffworks.com /anti-lock-brake.htm (1352 words)

	Making Sense of Sensors
		The signal to the electronic brake control module (EBCM) was converted to provide 128,000 pulses per mile and 4,000 pulses per mile to operate the cruise control.
		During antilock braking, hydraulic pressure in the individual wheel circuits is controlled to prevent any wheel from slipping.
		During antilock braking, a series of rapid pulsations is felt in the brake pedal.
	www.asashop.org /autoinc/feb2004/mech.cfm (1497 words)

	Antilock braking for bicycles
		Antilock brakes release brakes that are moving slower than the pavement beneath the tires.
		Anti-lock brakes stop faster on most surfaces since the coefficient of sliding friction is lower than the coefficient of static friction, and anti lock brakes continuously and more rapidly than humanly possible make corrections to keep the wheel spinning.
		These anti-flip brakes are using rear wheel torque on the brake not rear wheel lock to release the front.
	www.cyclingforums.com /t-101148-15-1.html (3674 words)

	What are disc brakes? What other types of brakes are there?
		Braking is accomplished by electrically switching motors to act as generators that convert motion into electricity instead of electricity into motion.
		A DRUM brake is a brake in which the friction is caused by a set of shoes or pads that press against the inner surface of a rotating drum.
		Vacuum braking is for all practical purposes now a dead technology; it is not in large-scale use anywhere in the world, supplanted in the main by air brakes.
	www.answerbag.com /q_view/7061 (982 words)

	New for 2000 Rams
		Brake system changes to Ram Pickup for the 2000 model year include a new compact series power brake booster and master cylinder.
		The rear brakes have also changed for light- and heavy- duty applications for the 2000 model year.
		Brake proportioning is now handled electronically by the controller antilock brake, or GAB.
	dodgeram.org /tech/new00/new_for_00.htm (1025 words)

	Drive it forever - The Boston Globe
		When the engine is running, the brakes are really spongy, my wife is upset, and the truck doesn't slow down very well.
		It's necessary to cycle the ABS pump and valves with the scan tool to move the air along to where it will be carried out of the system at the caliper-bleed bolts.
		Generically, this involves holding your foot on the brake pedal while telling the scan tool to cycle the ABS, and then bleeding the system at each corner.
	www.boston.com /cars/news/articles/2006/03/19/drive_it_forever (638 words)

	Anti-lock braking system - Wikipedia, the free encyclopedia
		The purpose of this is to allow the driver to maintain steering control under heavy braking and, in most situations, to shorten braking distances (by allowing the driver to hit the brake fully without the fear of skidding or loss of control).
		However, a limited form of anti-lock braking, utilising a valve which could adjust front to rear brakeforce distribution when a wheel locked, was fitted to the 1964 Austin 1800.
		ABS brakes are the subject of some widely-cited experiments in support of risk compensation theory, which support the view that drivers adapt to the safety benefit of ABS by driving more aggressively.
	en.wikipedia.org /wiki/Antilock_brake_controller (1583 words)

	CanadianDriver: Auto Tech - Testing Ford's new trailer brake controller
		The Ford electronic controller is integrated into the truck's brake system and uses software programming to operate the trailer brakes at the same time the truck's brakes are applied.
		Aftermarket trailer brake controllers may use electronics to apply the trailer brakes too but the brake input might be an internal pendulum or inertia sensor.
		During high speed stops, the Ford brake controller was as smooth as it was at low speed.
	www.canadiandriver.com /articles/jk/040707.htm (855 words)

	Dr. Dobb's \| 68HC05-Based System Design \| July 22, 2001 (Site not responding. Last check: 2007-10-24)
		Antilock brake systems (ABSs) prevent car wheels from locking when you abruptly slam the brakes on a slippery or wet road by applying consistent and even pressure to all four wheels, assuring that each wheel rotates at the same speed during braking.
		The B6 (which is constantly monitoring the brake pressure through polling routines) determines whether or not the ABS brake modulation should be employed, depending on the relative speed of each wheel.
		When brake pressure exceeds the safe threshold and a mismatch in wheel speed is encountered, the B6 takes control of the brake-pressure valves by modulating the pressure so that each wheel returns to the same speed, and the car comes to a smooth stop.
	www.ddj.com /184409610?pgno=14 (2919 words)

	Brake-By-Wedge
		The “wedge,” a term borrowed from the rudimentary wooden brake applied to stagecoach wheels before the arrival of the automobile, operates on a relatively simple principle.
		The electronic control unit for the foundation brake system also could govern the antilock brake and electronic stability control functions.
		A “brake operation unit” takes the place of a standard vacuum booster and master cylinder assembly, and a hydraulic modulator replaces the standard ABS and stability control unit.
	waw.wardsauto.com /ar/auto_brakebywedge (1173 words)

	Tire Size Correction
		With the advent of electronic transmission controllers and multiplexed communications systems, the need arose to express pinion factor electronically Now, vehicle speed is obtained by reading information from a speed sensor, such as the output speed sensor found on front-wheet-drive electronic transaxles.
		The transmission control module uses the output speed sensor signal and the pinion factor formula to calculate vehicle speed.
		The pinion factor is the electronic command that is broadcast to the TCM, (transmission control module), CAB (controller Anti-lock brakes), to the PCM (program control module) and the PCM in turn broadcasts the speed throught the vehicle oiver the PCM bus.
	dodgeram.org /tech/mods/electric/pinion_factor.htm (1403 words)

	PRdomain.com \| Ford Motor\| Super Duty offers sure footed towing
		Ford's electronic brake controller is the first to be factory-installed and integrated into the truck's brake system.
		In conventional brake controllers, the controller cannot detect the driver's braking force, thus it tries to interpolate the braking.
		In addition, integration into the Super Duty's antilock brake system (ABS) means the controller can optimize the trailer's braking during ABS stops for better control.
	www.prdomain.com /companies/F/FordMotor/newsreleases/200610436206.htm (681 words)

	Anti-Lock Brakes (ABS) - Wikicars
		The purpose of this is twofold: to allow the driver to maintain steering control under heavy braking and, in most situations, to shorten braking distances (by allowing the driver to hit the brake fully without the fear of skidding or loss of control).
		As most drivers rarely or never brake hard enough to cause brake lockup, and a significant number rarely bother to read the car's manual, this may not be discovered until an emergency.
		When drivers do encounter an emergency that causes them to brake hard and thus encounter this pulsing for the first time, many are believed to reduce pedal pressure and thus lengthen braking distances, contributing to a higher level of accidents than the superior emergency stopping capabilities of ABS would otherwise promise.
	wikicars.org /en/Anti-Lock_Brakes_(ABS) (1406 words)

	Peter Wellstead's Home page
		System identification application ‘firsts’ by his group are the dynamical identification an automotive gas turbine (with CAV Ltd) for multivariable control, estimation of the vertical motion dynamics of the Joint European Torus, and the wave energy device known as Salter’s Duck.
		These methods were used to analyze problems in rule based control of ABS brake control and thus save valuable track testing time [11].
		These 2-D control methods found application in the area of sheet manufacturing systems, such as paper making [13] and plastic film extrusion, and he was given a Royal Society Industry Fellowship to develop the applications of the theory in the film extrusion area.
	www.hamilton.ie /peter (1605 words)

	Isuzu Owners: Maintenance & Repairs - CarSpace Automotive Forums (Site not responding. Last check: 2007-10-24)
		Therefore, before replacing the control unit, check the connector joints and whether the unspecified current flows in the control unit due to short-circuit between harnesses.
		Reservoir: Temporarily holds the brake fluid that returns from the front and rear disc brake caliper so that pressure of front disc brake caliper can be reduced smoothly.
		Plunger Pump: Feeds the brake fluid held in the reservoir to the master cylinder.
	townhall-talk.edmunds.com /direct/view/.eea1204/3035 (2187 words)

	How Anti Lock Brake Systems Work
		The Antilock Brake System or the ABS maintains the steer ability and directional stability of the automobile incase of extreme braking circumstances.
		This is achieved by controlling the rotational speed of every wheel and monitoring the brake line pressure at the time of braking.
		According to a research, the antilock brakes system decreases the chances of multiple vehicle crashes by eighteen percent, but on the other hand, it increases the risk of run-off-road crashes by thirty five percent.
	www.2carpros.com /how_does_it_work/abs.htm (1037 words)

	IngentaConnect Braking performance simulation for a tractor-semitrailer vehicle ... (Site not responding. Last check: 2007-10-24)
		In particular, a commercial vehicle may meet a dangerous braking condition when the vehicle is lightly loaded or empty and when the road is wet or slippery.
		To design an air brake system for a commercial vehicle, since the air brake system has many design variables, there must be intense research on a method on how to prevent dynamic instability and how to maximize vehicle deceleration.
		In this study, mathematical models of the tractor-semitrailer and the air brake system including an antilock brake system controller have been constructed for computer simulation.
	www.ingentaconnect.com /content/pep/jae/2002/00000216/00000001/art00005 (276 words)

	ptdoityourself.net PTDIY.net - PT Cruiser Technical Library Part Thirty Four Q&A 826 - 850
		Control fluid modulation to the wheel brakes while the system is in an ABS mode or the traction control system is activated.
		The Transmission Control Module (TCM) is located behind the left fender and is fastened to the left frame rail forward of the suspension.
		The mode door is operated by a cable from the control knob on the dash and sends the air from the floor to the panel to the defroster vents.
	www.ptdoityourself.net /tl/tl_34.html (4146 words)

	BluDot Press Room - Your source for trailer brakes, brake system, brake kit and brake parts. (Site not responding. Last check: 2007-10-24)
		This brake system allows trailer operators the benefits of automotive-type hydraulic braking with electric controls in the tow vehicle.
		The ABS air brake system kits fit a wide variety of commericial-duty one-, two-, three-axle trailers and feature an electronic control unit relay valve that monitors the movement of each sensored wheel, therby modulating air pressure on the trailer brakes for controlled stops.
		The Air brake systme kits meet current FMVSS 571.121 regulations for ABS air brake systems and offer the benefits of reduced tire flat spotting and trailer swing, thus lowering trailer downtime, the company says.
	www.bludotinc.com /pubarticles.html (409 words)

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