Vehicle parking brake system and method

Details Vehicle parking brake system and method Vehicle parking brake system and method

1991-02-28

1992-08-18

Peters, Jr., Joseph F.

Fluid-pressure and analogous brake systems

Pipeless valves

303 20, 303100, 303 91, 303104, 36442602, B60T 1366, B60T 878, B60T 832, G06F 770

Patent

active

051393158

ABSTRACT:
A vehicle parking brake system automatically adapts to the road surface condition when operated while the vehicle is moving. The parking brake pressure is automatically controlled, in response to an operator command to initiate the parking brake function or in response to a failure of the hydraulic front brakes while the vehicle is moving, to establish and limit wheel slip at a desired controlled slip between each of the braked wheels and the road surface so as to automatically adapt to the road surface coefficient of friction.

REFERENCES:
patent: 4561527 (1985-12-01), Nakamoto et al.
patent: 4629043 (1986-12-01), Matsuo et al.
patent: 4671579 (1987-06-01), Swano et al.
patent: 4753131 (1988-06-01), Wupper
patent: 4871215 (1989-10-01), Takayama
patent: 4930083 (1990-05-01), Hoashi et al.

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