Hydraulic brake system for motor vehicles

Details Hydraulic brake system for motor vehicles Hydraulic brake system for motor vehicles

1991-11-06

1992-12-01

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

25112902, 25112919, 3031161, 3031192, 303900, 303901, B60K 2816, B60T 836

Patent

active

051674424

ABSTRACT:
A structurally simplified brake system which increases its functional reliability. The brake system has a brake pressure line extending between a master brake cylinder and a wheel brake. A shutoff valve is connected in parallel with a pressure limiting valve disposed in the brake line. A high-pressure pump toward the wheel brake side is capable of feeding pressure fluid into the line when the shutoff valve is closed. If a response pressure of the pressure limiting valve is exceeded, the pressure fluid can be diverted back to the master cylinder. The shutoff valve has a valve seat toward the wheel brake and a closing member toward the master cylinder which closing member is capable, by the action of a magnetic force on an armature of engaging the valve seat. A compression spring is disposed between the armature and the closing member and in the valve closing position exerts a closing force, adapted to the response pressure, upon the closing member. The shutoff valve and the pressure limiting valve are thus attained in a single valve unit.

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