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Document Title |
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7520573 |
Shadow zone fault detection
The output of a wheel speed sensor is sampled at dithered time intervals and the samples used to construct a pair of histograms representing high and low sample values. A minimum voltage threshold...
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7421327 |
Drivetrain protection and management system
A drivetrain protection and management system (DPMS) monitors and determines individual wheel speeds to detect wheel spin and slip conditions on a drive axle. Wheel spin is caused by low surface...
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7401869 |
Architecture for an airplane braking system including two computers and capable of withstanding two breakdowns, and a method of managing such an architecture
The invention relates to an architecture for a braking system for an airplane fitted with a plurality of undercarriages each carrying a plurality of wheels, at least some of which are fitted with...
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7380891 |
Power supply apparatus for vehicle
A power supply apparatus for a vehicle. An electronic controller outputs information for controlling braking of a vehicle. A battery supplies electric power to a brake via the electronic...
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7374253 |
Method for monitoring the air bleeding quality of an electrohydraulic braking system
The invention discloses a method for determining the air content of the brake fluid in a hydraulic braking system. This method also permits determining the quality of the bleeding of the braking...
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7306296 |
Failure check apparatus for control apparatus of vehicle
A failure check apparatus for a control apparatus of a vehicle such as ABS. When the failure check apparatus performs initial check for the ABS, it successively activates each of solenoid valves...
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6964455 |
Vehicle anti-lock brake system and method
An anti-lock brake system for a tri-axle wheeled vehicle equipped with wheel speed sensors and modulators for adjusting brake pressure. The modulators are actuated by a six-channel electronic...
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6672687 |
Vehicle motion control device
A vehicle motion control device which detects an abnormality of an automatic hydraulic pressure generator having a master cylinder, a booster which boosts the master cylinder and a booster actuator...
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6557952 |
Remote control unit for electric wheel brake controller
A remote manual control is provided for an electronic wheel brake controller. The remote manual control is connected to the wheel brake controller with a cable having quick disconnect connectors at...
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6450588 |
Vehicular brake-by-wire system
The present invention provides an improved torque actuator control system using data inputs from an operator controlled input transducer relating to the desired torque output of a controlled member...
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6398318 |
Method and device for monitoring a braking system contained in a vehicle
A method for monitoring a braking system contained in a vehicle. The braking system includes at least one brake circuit. The brake circuit, on the output side, contains valve configurations, to...
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6398319 |
Driver warning of braking malfunction in electro-hydraulic (EHB) braking systems
An electro-hydraulic braking system of the type capable of operating in a brake-by-wire mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels in proportion to the...
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6382740 |
Protective circuit for a controlling element and method for testing the control circuit of a controlling element
The invention relates to a circuit arrangement of a circuit of an electrically controlled brake force booster, including a first and a second line that supply two potentials to the connections of...
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6290309 |
Spring brake actuation for electronically controlled brake system
An electronically controlled brake system includes a brake actuator wherein a valve is electrically controlled to maintain the spring chamber in the non-actuated position during normal operation....
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6227626 |
Method and device for controlling a motor vehicle drive train
A device and a method control units arranged in the power train of a motor vehicle. The vehicle has electrically actuated, wheel brakes, preferably designed with one or two motors. A control...
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6206489 |
Method and device for check-testing a braking system
A method and a device for check-testing a braking system in which, before travel commences, a self-test of the braking system is performed. During the course of the self-test, the valve...
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6158822 |
Method and apparatus for diagnosing electrically operated brake without manual operation of brake operating member
A method of diagnosing an electrically operated brake for abnormality thereof in an automotive vehicle wherein a wheel is braked by a friction force generated by an electric motor of the brake upon...
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6082834 |
Circuit arrangement for a brake system with anti-lock control and traction slip control
A circuit arrangement for a brake system having anti-lock control (ABS) and traction slip control by brake management (BASR) which has an electromotively driven hydraulic pump for the auxiliary...
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5988773 |
Replacement-period detection method and vehicle control apparatus capable of notifying replacement period of actuator
A total conductance time with respect to each of control actuators is calculated. It is determined whether each of the control actuators has reached a replacement period by determining whether the...
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5941612 |
Method and apparatus for testing an ABS electronic control unit microprocessor
A controller for a hydraulic control system includes a microprocessor having a diagnostic routine. The diagnostic routine is operable to exercise an arithmetic logic unit within the microprocessor...
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5899540 |
Brake system including anti-lock control and electronic brake force distribution
A brake system including electronic anti-lock control (ABS) and electronically controlled brake force distribution (EBV). This brake system has electrically operable hydraulic valves, of which the...
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5819193 |
Circuit arrangement for conditioning and evaluating wheel sensor signals
A circuit arrangement for conditioning and evaluating the signals emanating from wheel sensors in a first stage determines the sensor(s) supplying the highest useful signal at very low wheel...
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5775783 |
Anti-lock braking system capable of recording the operating conditions of elements thereof and recording method therefor
An anti-lock braking system as well as the method thereof, is capable of recording the operating conditions of elements thereof. The anti-lock braking system includes a microcomputer having first...
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5757641 |
Triplex control system with sensor failure compensation
A triplex control system provides automatic compensation for a sensor bias failure in one channel while continuing to process all sensor readout signals. The triplex control system includes first...
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5713643 |
Control circuit for automotive vehicle motion control systems
A control circuit for use with an automotive vehicle motion control system such as an anti-lock control (ABS) for an automotive vehicle brake system and/or traction slip control (TCS) includes...
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5707117 |
Active brake control diagnostic
A comprehensive diagnostic for an active brake control system for automatically increasing braking at selected wheels of an automotive vehicle in response to detected vehicle turning maneuvers...
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5649749 |
Brake system fault mode generator
A fault controller for a brake system includes a control display having a plurality of identifying labels displayed thereon corresponding to predetermined brake system fault mode options. A...
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5588720 |
Circuit arrangement for a brake system with anti-lock system and/or traction control
In a circuit arrangement for a brake system with anti-lock system and/or traction control with input circuits, output circuits, control circuits, monitoring circuits, comparator circuits and...
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5558415 |
Method of enhancing the reliablity in operation of a brake system with electronic control of the brake force distribution
To enhance the reliability of a brake system with electronic control of the brake force distribution, a short pressure reduction pulse, which is negligible for the braking process, is applied to...
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5558414 |
Vehicle braking system capable of controlling pump for optimum rate of change of brake cylinder pressure
A vehicle braking system including, a pump operated by a pump actuator driven by a DC power source, an electrically operated pressure control device having operating states which are selectively...
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5549368 |
ABS main microprocessor malfunction determinaton based on pressure reduction or holding periods
An antilock brake control device comprising: a main microprocessor which forms a judgment on antilock control on the basis of wheel speed signals inputted from wheel speed sensors so as to output...
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5499866 |
Monitoring method and device in automatic braking process
A device monitors an automatic braking process by using a fault-detecting, operational testing method which takes place via an automatic braking process lasting only briefly, typically about 50 ms....
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5404304 |
Vehicle control system for determining verified wheel speed signals
A vehicle controller in which inputs from several wheel speed sensors are used to compute wheel speed. A redundant circuit in the controller receives the sensor input signals and computes wheel...
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5372221 |
Active brake sensor
An ultrasonic wave is propagated through a brake pad to determine various brake conditions including brake pad wear, brake status (engaged/disengaged), a wet brake failure or a brake drag failure....
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5267785 |
Method for switching a pressure control device
A method for switching a pressure control device in which the pressure control device is switched only whenever the pressure of the pressure fluid prevailing on the master brake cylinder side of...
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5221127 |
Circuit configuration for monitoring an anti-lock brake system
A circuit configuration for an anti-lock brake system, which receives input from wheel sensors positioned on the driven wheels, comprises a monitoring circuit (7) which triggers a test cycle...
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5124988 |
Dump valve operational fault-determination system
A dynamic diagnostic operational dump valve fault-detection system including a first logic network connected to a release reset circuit and to an applied reset circuit, the release reset circuit...
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4917445 |
ABS variant nominal hold pressure
A brake control system is described that maximizes the braking efficiency of an under-damped actuator, such as a motor-driven linear screw. When an incipient lock condition is detected, the system...
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4832418 |
Anti-lock hydraulic brake system for automotive vehicles
In a slip-controlled brake systems which provide for a hydraulic resetting of the brake pedal in the event of slip control, it must be ensured that the change-over valves which check the connection...
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4824182 |
Anti-lock hydraulic brake system for automotive vehicles
An anti-lock hydraulic brake system which includes a brake pressure generator composed of a master cylinder, a brake power booster inserted upstream thereof and a pressure modulator interposed...
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4709341 |
Self-monitoring system for detecting error at output port during cold start of microprocessor system
A self-monitor system for a microprocessor performs self-checking during cold-start of the microprocessor. Self-checking is performed by applying a dummy load to a specific output port, and...
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4708406 |
Hydraulic braking system with malfunction alarm junction
A hydraulic braking system having an antiskid function and a holding function for keeping the vehicle immobile during vehicle stoppage is further provided with a malfunction alarm function wherein...
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4709223 |
Antiskid system monitoring circuit
An efficiency monitor circuit for an antiskid system is provided. The efficiency of the antiskid system is determined by monitoring the antiskid signal as to peak positive and peak negative moves...
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4493210 |
Anti-block control system test
An anti-block control system has four identically designed control channels. Safety circuits (8, 8') are also provided for monitoring the system, as are devices for testing the operability of the...
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4484784 |
Dual-circuit brake apparatus
A dual-circuit brake system which is combined with an anti-wheel-lock apparatus, also known as an anti-skid braking system. Between the two brake circuits I and II, in the vicinity of the anti-skid...
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4484280 |
System for controlling the propulsion on motor vehicles
A system for controlling the propulsion on motor vehicles which not only enables the output torque of the drive unit of the vehicle to be utilized in an optimum manner in critical driving...
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4389710 |
Braking system test circuit
Test circuitry for exercising and testing the operability of antiskid and automatic braking control circuits in an aircraft braking system. The invention includes a digital processor communicating...
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4365333 |
Test signal generator
A test signal generator for generating signals simulating the signals obtained from the axles of a railroad car, to permit testing of a railroad car brake controller. During testing of the...
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4340935 |
Method of testing the operativeness of a control system
A method of testing the operativeness of a vehicular anti-wheel-lock system of the type whose control device includes a self-monitoring circuit which, when the control device is switched on,...
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4326755 |
Deceleration control circuit
A deceleration control circuit for limiting the deceleration rate and applied brake pressure at vehicle speeds below a predetermined level. The invention substantially eliminates strut vibrations...
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