Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1996-12-09
1999-07-27
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031135, B60T 842
Patent
active
059278250
ABSTRACT:
An electro-hydraulic brake apply system includes an emulator that effects pedal feel simulation by allowing compliance at a selective variable rate. This provides a vehicle driver with the preferred pedal travel and feedback characteristics of a conventional master cylinder/power booster apply system. As a secondary function, the emulator is utilized to latch the modulator. This locks the modulator apply piston in place when electrical power is removed from the drive motor. Further, the emulator operates to hydraulically isolate the master cylinder from the wheel brakes during normal system operation.
REFERENCES:
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patent: 5029950 (1991-07-01), Vennemeyer et al.
patent: 5042885 (1991-08-01), Villec
patent: 5147117 (1992-09-01), Quinn
patent: 5163744 (1992-11-01), Tierney et al.
patent: 5246283 (1993-09-01), Shaw et al.
patent: 5308154 (1994-05-01), Matouka
Schenk Donald Edward
Shaw Schuyler Scott
General Motors Corporation
Graham Matthew C.
Sedlar Jeffrey A.
Sigler Robert M.
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