초록 ▼

The multiple-circuit hydraulic brake system includes a brake-actuating device having three working chambers for actuating wheel brake cylinders. A first brake circuit is connected to a first of the three working chambers and separately to each wheel brake cylinder of the rear axle through a differen

The multiple-circuit hydraulic brake system includes a brake-actuating device having three working chambers for actuating wheel brake cylinders. A first brake circuit is connected to a first of the three working chambers and separately to each wheel brake cylinder of the rear axle through a different one of two control valves controlled by the pressure of a second and a third of the three working chambers. A second brake circuit is connected between one of the wheel brake cylinders of the front axle and the second of the three working chambers and a third brake circuit is connected between the other of the wheel brake cylinders of the front axle and the third of the three working chambers. Upon failure of the second and/or third brake circuit, the associated one of the two control valves retain the pressure of the diagonally opposite rear axle wheel brake cylinder below the wheel locking limit.

대표청구항 ▼

A multiple-circuit hydraulic brake booster system for an automotive vehicle comprising: a brake-actuating device for the actuation of wheel brake cylinders including three working chambers adapted to be pressurized; a first brake circuit coupled to a first of said three working chambers; a second br

A multiple-circuit hydraulic brake booster system for an automotive vehicle comprising: a brake-actuating device for the actuation of wheel brake cylinders including three working chambers adapted to be pressurized; a first brake circuit coupled to a first of said three working chambers; a second brake circuit coupled between a second of said three working chambers and one wheel brake cylinder of a front axle of said vehicle; a third brake circuit coupled between a third of said three working chambers and the other wheel brake cylinder of said front axle; a first control valve coupled in said first brake circuit between said first of said three working chambers and one wheel brake cylinder of a rear axle of said vehicle diagonally opposite said one wheel brake cylinder of said front axle, said first control valve being coupled to said second of said three working chambers and under control of pressure therein to retain pressure in said one wheel brake cylinder of said rear axle below a wheel locking limit upon failure of said second brake circuit; and a second control valve coupled in said first brake circuit between said first of said three working chambers and the other wheel brake cylinder of said rear axle diagonally opposite said other wheel brake cylinder of said front axle, said second control valve being coupled to said third of said three working chambers and under control of pressure therein to retain pressure in said other wheel brake cylinder of said rear axle below said wheel locking limit upon failure of said third brake circuit.