Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1992-06-08
1993-05-04
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031161, 3031191, B60T 834
Patent
active
052074870
ABSTRACT:
A brake system equipped with an anti-lock and traction control system including first shutoff valve and a first inlet valve of a valve assembly for brake pressure modulation are disposed in a first brake line connected with a master brake cylinder and a wheel brake. Toward the wheel brake, a third return line having a first outlet valve of the first valve assembly begins at the first brake line and leads to a first high-pressure pump, which pumps fluid into the first brake line. On the intake side, the pump communicates with the master brake cylinder, through a suction line having a charging valve. For brake pressure modulation in the traction control mode, phases for pressure buildup, pressure holding and pressure reduction can be controlled with the high-pressure pump, the first shutoff valve, the charging valve and the first inlet valve, while the first outlet valve assumes its shutoff position. A first storage chamber connected to the third return line therefore remains free of pressure fluid. The hydraulic multi-circuit brake system can be used in particular in motor vehicles.
REFERENCES:
patent: 5026124 (1991-06-01), Resch
patent: 5102205 (1992-04-01), Stegmaier
patent: 5123716 (1992-06-01), Willmann
patent: 5131730 (1992-07-01), Kollers et al.
Holzmann Roland
Willmann Karl-Heinz
Butler Douglas C.
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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