| 摘要 |
There are provided a master cylinder M and proportional pressure intensification valves V1, V2 for each drawing a boosting hydraulic pressure in proportion to an output hydraulic pressure outputted from the master cylinder M from a source of hydraulic pressure S into a hydraulic pressure boosting chamber 30, wherein one of pairs of front wheel brakes Bfa, Bfb and rear wheel brakes Bra, Brb connects to output ports 11, 12 of the master cylinder M, and the other pair connects to the hydraulic pressure boosting chambers 30 of the respective proportional pressure intensification valves V1, V2. Accordingly, it is possible to provide a vehicle braking system comprising proportional pressure intensification valves for generating a boosted hydraulic pressure intensified in proportion to an output hydraulic pressure outputted from a master cylinder without any increase in unsprung load of the vehicle.
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