Claims
- 1. A traction slip-and brake slip-controlled brake system for motor vehicles having vehicle wheels with wheel brakes, said system comprising, in combination:
- a pedal-actuated hydraulic pressure generator including a hydraulic brake power booster and a tandem master cylinder having first and second pressure chambers;
- a first pressure fluid conduit connecting said first chamber to a selected pair of said wheel brakes and a second pressure fluid conduit connecting said second chamber to a second selected pair of said wheel brakes;
- a pressure compensating reservoir;
- an auxiliary energy supply system including a hydraulic pump having an input connected to said reservoir and an output connected to said power booster and said supply system further including a pressure accumulator connected to said output of said pump;
- first and second normally open control valves respectively connected in the pressure fluid conduits between said chambers and said wheel brakes;
- first and second normally closed control valves respectively connected between said selected pairs of said wheel brakes and said reservoir;
- a first normally open traction slip control valve connected between said normally closed valves and said reservoir;
- a first normally closed traction slip control valve connected between said pressure accumulator and the normally closed valves connected to said wheel brakes wherein said master cylinder includes first and second working pistons respectively provided in said first and second chambers and each piston including an annular chamber connected as an input to a three-way/two-position valve and said three-way/two-position valve having a first output connected to said reservoir and a second output connected to said power booster.
- 2. The system according to claim 1, wherein each piston includes a one-way non-return valve connected between it annular chamber and the respective one of said first and second pressure chambers.
- 3. The system according to claim 2, wherein the normally closed valves connected to said wheel brakes are hydraulically connected to said reservoir during brake slip control and which are connected to said auxiliary energy supply system during traction slip control.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3438401 |
Oct 1984 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 783,552, filed Oct. 3, 1985, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (6)
Number |
Date |
Country |
2649106 |
May 1977 |
DEX |
3021116 |
Dec 1981 |
DEX |
3215739 |
Nov 1983 |
DEX |
2129517 |
May 1984 |
GBX |
2155129 |
Sep 1985 |
GBX |
2165905 |
Apr 1986 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
783552 |
Oct 1985 |
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