Brake pressure generator having means for controlling pressure i

Details Brake pressure generator having means for controlling pressure i Brake pressure generator having means for controlling pressure i

1991-03-14

1993-08-17

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031142, 3031152, B60T 844

Patent

active

052362574

ABSTRACT:
A pressure generating apparatus for a hydraulic brake system, including a master cylinder having a pressure piston which partially defines a pressure chamber and which is advanced to generate a fluid pressure in the pressure chamber in response to an operation of a brake operating member. The apparatus further includes inhibiting device having a non-operated state for allowing the pressure piston to be advanced, and an operated state for inhibiting the pressure piston from being advanced, and a pressure changing device having a pressure changing chamber communicating with the pressure chamber. The pressure changing device operates to change a volume of the pressure changing chamber and thereby change the pressure chamber pressure. A controller is provided for controlling the inhibiting device and the pressure changing device, to change the pressure in the pressure chamber while the inhibiting device is placed in the operated state.

REFERENCES:
patent: 4653815 (1987-03-01), Agarwal et al.
patent: 4678242 (1987-07-01), Belart
patent: 4678243 (1987-07-01), Belart
patent: 4838619 (1989-06-01), Ocvirk
patent: 4861117 (1989-08-01), Reinartz et al.
patent: 4917445 (1990-04-01), Leppek et al.
patent: 5011237 (1991-04-01), Matouka et al.

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