Anti-skid brake system for a vehicle
First Claim
1. A vehicle anti-skid control brake system having at least one first brake pressure line and at least one second brake pressure line via which a master brake cylinder communicates with wheel brake cylinders, at least one first directional control valve is incorporated into said at least one first brake pressure line for closing the at least one first brake pressure line in the event of an anti-skid control, at least one second directional control valve is incorporated into said at least one second brake pressure line for closing the at least one second brake pressure line in the event of an anti-skid control, said at least one first brake pressure line is assigned a first return pump which bypasses the at least one first directional control valve, said at least one second brake pressure line is assigned a second return pump which bypasses the at least one second directional control valve, said at least one first directional control valve is an at least one first magnetic controlled valve (9), which in a currentless state as well as if pressure is absent in said at least one first brake pressure line (4), blocks said at least one first brake pressure line (4) and communicates with a control unit (S) which triggers said at least one first magnetic controlled valve in pulsed fashion for opening said at least one first magnetic controlled valve, and said at least one second directional control valve is an at least one second magnetic control valve (10, 11), which in a currentless state as well as if pressure is absent in said at least one second brake pressure line (6a, 6b), blocks said at least one second brake pressure line (6a, 6b) and communicates with said control unit S which triggers said at least one second magnetic control valve in pulsed fashion for opening said at least one second magnetic valve.
1 Assignment
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Accused Products
Abstract
A vehicle brake system having at least two brake pressure lines, via which a master brake cylinder communicates with wheel brake cylinders, at least one valve is incorporated in each brake pressure line to close the brake pressure lines in the event of anti-skid control. Each brake pressure line is also assigned a return pump, which bypasses the valve. At least one valve, in the currentless state or with the absence of pressure buildup in a brake pressure line, blocks this brake pressure line and communicates with a control unit for pulsed opening upon pressure buildup in the brake pressure line. Because of the additional disposition of a pressure valve and check valve in a bypass around the pulsed valve, expensive pressure reducers are dispensed with, with little additional expense in the anti-skid control system. Even if the anti-skid control system fails, stability during braking is assured.
16 Citations
29 Claims
- 1. A vehicle anti-skid control brake system having at least one first brake pressure line and at least one second brake pressure line via which a master brake cylinder communicates with wheel brake cylinders, at least one first directional control valve is incorporated into said at least one first brake pressure line for closing the at least one first brake pressure line in the event of an anti-skid control, at least one second directional control valve is incorporated into said at least one second brake pressure line for closing the at least one second brake pressure line in the event of an anti-skid control, said at least one first brake pressure line is assigned a first return pump which bypasses the at least one first directional control valve, said at least one second brake pressure line is assigned a second return pump which bypasses the at least one second directional control valve, said at least one first directional control valve is an at least one first magnetic controlled valve (9), which in a currentless state as well as if pressure is absent in said at least one first brake pressure line (4), blocks said at least one first brake pressure line (4) and communicates with a control unit (S) which triggers said at least one first magnetic controlled valve in pulsed fashion for opening said at least one first magnetic controlled valve, and said at least one second directional control valve is an at least one second magnetic control valve (10, 11), which in a currentless state as well as if pressure is absent in said at least one second brake pressure line (6a, 6b), blocks said at least one second brake pressure line (6a, 6b) and communicates with said control unit S which triggers said at least one second magnetic control valve in pulsed fashion for opening said at least one second magnetic valve.
Specification