| 摘要 |
A brake system for a motor vehicle having three sources of communicating pressurized fluid to wheel brakes and having a mechanical brake. Two of the sources of communicating pressurized fluid are the reservoirs of a dual master cylinder and provide first and second hydraulic brake subsystems. The remaining source is an emergency master cylinder and provides a third hydraulic brake subsystem. The mechanical brake and the third hydraulic brake subsystem are operatively connected to an emergency brake pedal. Disc brakes each have a pair of floating calipers, each caliper being in fluid communication with a pair of sources of communicating pressurized fluid. Drum brakes have at least one dual chambered wheel cylinder in fluid communication with two sources of communicating pressurized fluid. The first and second hydraulic brake systems, as well as the emergency brake pedal, operate brakes on each of the four wheels of a motor vehicle.
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