Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-07-24
1988-03-08
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
605471, 60574, 60578, 188358, 303 50, 303119, B60T 832
Patent
active
047296097
ABSTRACT:
For attaining an abrupt change in ratio, in a slip-controlled brake system for automotive vehicles, the chamber (11) of a fast-fill cylinder (4) is connected to a plunger chamber (41) of the braking pressure generator (1) which is acted upon by the booster piston (40), while the pressure line (7) leading from the plunger chamber (41) to the fast-fill cylinder (4) contains a pressure-controlled directional control valve (8) governing a pressure-fluid conduit to the pressure-supply reservoir (31). The annular chamber (50) of the fast-fill cylinder (4) is connected by way of a return line (55) to the pressure-supply reservoir (31) and with the prechamber (18) of the master cylinder (15) by way of a pressure line (56), while a pressure-controlled two-way/two-position directional control valve (9) with a non-return valve connected in parallel thereto is arranged in the return line (55). Upon failure of the auxiliary-energy supply system (2), the stepped piston (12), the valve (8) and the piston (51) of the intermediate member (39) remain in their inactive position so that the pressure build-up in the brake circuits (36, 37) is affected through the pistons (32, 33) exclusively.
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Ocvirk Norbert
Schonlau Juergen
Seibert Wolfram
Trach Guenter
Alfred Teves GmbH
Butler Douglas C.
Raden James B.
Seitter Robert P.
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