Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1987-07-10
1989-01-10
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303110, 303114, 180197, B60T 836, B60T 864, B60T 834
Patent
active
047969598
ABSTRACT:
A brake system provided for automotive vehicles with front wheel drive or with rear wheel drive has a dual-circuit braking pressure generator (1) and diagonally connected wheel brakes. There is provided an auxiliary-pressure-supply system (5) with a hydraulic pump (6) which is switched on during brake application or when there is an excessive traction slip. In the brake slip control phase an auxiliary pressure is built up by an auxiliary pressure control valve (9), in the traction slip control phase an auxiliary pressure is built up by a 2/2-way valve (10). By separating valves (15, 16) the pressure medium path to the non-driven vehicle wheel (HR, HL) is locked in the traction slip control phase and, via inlet valves (EV.sub.3, EV.sub.4), pressure medium is directly fed from the auxiliary-pressure-supply system (5) into the driven wheels (VL, VR). Connected in parallel with the inlet valves (EV.sub.1, EV.sub.2) connecting the braking pressure generator (1) with the wheel brakes (17-20) is one non-return valve (13, 14) each of which can open toward the braking pressure generator (1).
REFERENCES:
patent: 4416347 (1983-11-01), Bertling et al.
patent: 4484280 (1984-11-01), Brugger et al.
patent: 4589706 (1986-05-01), Leiber
patent: 4715663 (1987-12-01), Hattori et al.
Maas Joachim
Ocvirk Norbert
Seibert Wolfram
Trach Guenther
Alfred Teves GmbH
Kashnikow Andres
Newholm Timothy
Raden James B.
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