Failsafe operation of a hybrid brake system for a vehicle

Details Failsafe operation of a hybrid brake system for a vehicle Failsafe operation of a hybrid brake system for a vehicle

2011-07-12

2011-07-12

Rodriguez, Pam (Department: 3657)

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

C303S003000, C303S009630, C303S009710

Reexamination Certificate

active

07976109

ABSTRACT:
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.

REFERENCES:
patent: 4629258 (1986-12-01), Resch et al.
patent: 4740039 (1988-04-01), Hattwig
patent: 5127713 (1992-07-01), Birkenbach
patent: 5150951 (1992-09-01), Leiber et al.
patent: 5558415 (1996-09-01), Buschmann et al.
patent: 5658057 (1997-08-01), Ohnuma et al.
patent: 6431662 (2002-08-01), Isono et al.
patent: WO 00/66410 (2000-03-01), None
Translation of submitted WO 00/66410 from USPTO STIC.

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