| CPC B60T 8/409 (2013.01) [B60T 8/4086 (2013.01); B60T 8/90 (2013.01); B60T 13/142 (2013.01); B60T 13/686 (2013.01)] | 18 Claims |
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1. A brake system for actuating at least one of a pair of front wheel brakes and a pair of rear wheel brakes in normal non-failure and manual push-through modes, the system comprising:
a reservoir;
a master cylinder operable to provide a brake signal responsive to actuation of a brake pedal connected thereto, the master cylinder being selectively operable during a manual push-through mode by actuation of the brake pedal to generate brake actuating pressure to at least one output for hydraulically actuating the pair of front wheel brakes;
a power transmission unit configured for selectively providing pressurized hydraulic fluid for actuating at least one of the pair of front wheel brakes and the pair of rear wheel brakes in a normal non-failure braking mode;
a plurality of iso/dump valve arrangements, each iso/dump valve arrangement being hydraulically interposed between the power transmission unit and a corresponding one of the wheel brakes;
a plurality of two-position three-way valves, each of the three-way valves being hydraulically connected with the master cylinder, the power transmission unit, and at least a selected wheel brake of the pair of front wheel brakes, the plurality of two-position three-way valves being hydraulically interposed between the iso/dump valve arrangements and the pair of front wheel brakes, the three-way valves selectively controlling hydraulic fluid flow from a chosen one of the master cylinder and the power transmission unit to the corresponding one of the front wheel brakes; and
an electronic control unit for selectively controlling at least one of the power transmission unit, at least one of the plurality of iso/dump valve arrangements, and at least one of the three-way valves responsive to the brake signal.
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