Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1987-08-26
1989-03-28
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303113, 303116, 303119, B60T 844, B60T 832
Patent
active
048157937
ABSTRACT:
A hydraulic brake system for automotive vehicles has a master brake cylinder (1) operable by a brake pedal, wheel brakes (VL, HR, VR, HL) being connected to said master brake cylinder via brake lines (11, 12), and a hydraulic power booster (22) supplied by a pressure medium source (42) and connected between the brake pedal and the master brake cylinder (1) so as to boost the actuating force. The booster has a booster piston (27) in a booster chamber (28) and the pressurization of said booster piston is controllable by the brake pedal via a control piston (30). For controlling the brake system by means of a brake slip control device the connection from the brake lines (11, 12) to the wheel brakes can be blocked by solenoid valves (13-16). The booster piston (27) is connected with a resetting piston which, for pushing the booster piston back into its rest position, is pressurizable via a resetting valve (46, 53) controllable by the brake slip control device. For brake slip control the master cylinder ( 1) is actuatable intermittently by means of a drive piston (39), with the booster piston moved back. The actuating movement of said drive piston is controllable by the brake slip control device via solenoid valves (48, 55). A traction slip control device can connect the cylinder chamber (38) of the drive piston (39) with the pressure medium source (42) via a solenoid valve (50) and a pressure reducing valve (51) and also with the unpressurized reservoir (44) via a solenoid valve (48).
REFERENCES:
patent: 3291538 (1966-12-01), Bulgin
patent: 4206950 (1980-06-01), Elliott
patent: 4415210 (1983-11-01), Belart et al.
patent: 4482190 (1984-11-01), Burgdorf et al.
patent: 4641895 (1987-02-01), Belart et al.
Reinartz Hans-Dieter
Steffes Helmut
Alfred Teves GmbH
Kashnikow Andres
Le Mark T.
Raden James B.
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