| 摘要 |
A vehicle brake device A is provided with a master cylinder 10 for generating a fluid pressure depending on the stepping state of a brake pedal 11 and a differential pressure control valve 43 constituted by a solenoid valve of the type that has two ports 43 a , 43 b and is capable of controlling the differential pressure between the both ports 43 a and 43 b. The differential pressure control valve 43 is connected at its port 43 a to an outlet port 10 a of the master cylinder 10 . An ECU 70 controls the differential pressure control valve 43 to generate a controlled differential pressure corresponding to the pedal operation state of the brake pedal 11 between the both ports 43 a and 43 b. Thus, according to the vehicle brake device A, it can be realized to obtain a pedal feeling which is smooth without suffering any delay in response, to easily alter a reaction force property of the brake pedal for any of various vehicle models, and to decrease in cost as well as dimension.
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