| 摘要 |
PROBLEM TO BE SOLVED: To simplify a constitution and facilitate also control, by avoiding a problem of heat generation in a switching valve which switches a working fluid pressure from a master cylinder to the other working fluid pressure. SOLUTION: Regeneration switching valves 21P, 21S comprising a two- position switching pilot valve are interposed between a master cylinder 2 and wheel cylinders 1FL to 1RR, a pilot pressure thereof uses a working fluid pressure in a booster 4, when a brake pedal 3 is actuated, the working fluid pressure in the booster 4, is immediately supplied as the pilot pressure passing through a check valve 29, thus the master cylinder 2 communicates with stroke simulators 22P, 22S. By interposing an orifice 28 between the booster 4 and the regeneration switching valves 21P, 21S, returning of the regeneration switching valvs 21P, 21S by a slight boot return is avoided. |
