Anti-skid and traction control apparatus for a vehicle

Details Anti-skid and traction control apparatus for a vehicle Anti-skid and traction control apparatus for a vehicle

1990-01-16

1991-09-17

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

180197, 303110, 303119, 303 68, 303117, B60T 832, B60K 2816

Patent

active

050488996

ABSTRACT:
A system applicable to motor vehicles having a master brake cylinder with a pressure fluid supply container and at least one pressure control valve assembly is associated with a wheel brake. A pump provided which in the anti-skid mode pumps pressure fluid drawn from the wheel brake to the master brake cylinder by use of the pressure control valve assembly. In a traction control mode, the pump draws pressure fluid from the master brake cylinder and forces it to the wheel brake. To this end, the pressure control valve assembly has a first line connection communicating with the master brake cylinder, a second line connection communicating with the wheel brake, and a third line connection through which quantities of pressure fluid flows in the anti-skid mode to reduce the wheel brake pressure. Both simple design and increased functional reliability of the system are attained by providing that in the traction control mode, the third line connection of the pressure control valve assembly communicates with a pressure outlet of the pump.

REFERENCES:
patent: 4653815 (1987-03-01), Agarwaz et al.
patent: 4657310 (1987-04-01), Klein
patent: 4715667 (1987-12-01), Otsuki et al.
patent: 4755008 (1988-07-01), Imoto et al.
patent: 4927213 (1990-05-01), Burgdore

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