Bwi Company Limited S.a.

Other

Delphi Technologies, Inc.

Zf Active Safety US Inc.

Deron Craig Littlejohn

David F Reuter

Bryan Todd Fulmer

Blaise J Ganzel

Schuyler Scott Shaw

Earl Wayne Lloyd

E Wayne Lloyd

Rebecca L Wang

Mohammad A Tamimi

A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A secondary brake module includes a plunger assembly for generating brake actuating pressure for actuating the wheel brake under the manual push-through mode.

Vehicle brake system with secondary brake module

A hybrid brake apparatus for a vehicle includes a front hydraulically actuated brake circuit, a rear electrically actuated brake circuit, and a controller. The front hydraulically actuated brake circuit includes a master cylinder for providing pressurized fluid to the front brake circuit in response to an input applied to the master cylinder for applying a frictional front braking force. The rear electrically actuated brake circuit is controllable in response to the input for providing a frictional rear braking force. The rear brake circuit is controlled in accordance with a first predetermined relationship between the input and rear braking force during normal operation of the front brake circuit. If the controller detects a degradation of front braking force, the rear brake circuit is controlled in accordance with a second predetermined relationship between the input and the rear braking force, to thereby compensate for the degradation of front braking force.

Failsafe operation of a hybrid brake system for a vehicle

The present invention discloses a braking apparatus for a vehicle having a brake pedal. The braking apparatus includes a master cylinder having a reservoir for retaining a brake fluid. At least one hydraulically actuated brake is in fluid communication with the master cylinder and a control unit is in electrical communication with the hydraulically actuated brake. A replenishment system is in fluid communication with the master cylinder and in electrical communication with the control unit for feeding the brake fluid into the replenishment system during a first condition and feeding the brake fluid from the replenishment system into the hydraulically actuated brake during a second condition after initial depression of the brake pedal to provide consistent pedal feel and braking pressure.

Braking apparatus

A method for estimating master cylinder pressure during brake apply of a brake system of a vehicle, wherein the brake system includes a brake pedal. A first master cylinder pressure is estimated from brake pedal position during brake apply. A second master cylinder pressure is estimated from vehicle deceleration during brake apply. The master cylinder pressure is estimated during brake apply to be equal to the first master cylinder pressure when the vehicle deceleration is below a predetermined deceleration value. The master cylinder pressure is estimated during brake apply to be equal to a value which is less than the first master cylinder pressure and greater than or equal to the second master cylinder pressure when the vehicle deceleration is at or above the predetermined deceleration value. At least the estimated master cylinder pressure during brake apply is used to control the vehicle.

Method for estimating master cylinder pressure during brake apply

The present invention provides a method, a computer usable medium including a program, and a system for monitoring inflation in a plurality of vehicle tires. The method and computer usable medium include the steps of determining a direct pressure in at least one primary tire and determining a rolling radius for the primary tire and at least one secondary tire. A pressure difference is determined based on the determined rolling radius for the primary and secondary tires. The determined pressure difference is adjusted based on the determined direct pressure of the primary tire. The determined pressure difference is compared to at least one threshold value. The system includes means for achieving the method steps of the invention.

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West Bloomfield, MI, United States of America

Deron Craig Littlejohn