| 摘要 |
PROBLEM TO BE SOLVED: To provide a brake control device capable of quickly performing regenerative cooperation control after the start of traveling. SOLUTION: The brake control device 20 is provided with first and second wheel cylinders 23; a master cylinder unit 10 for pressurizing an operation fluid according to an operation amount of a brake pedal 24; first and second systems each transmitting the operation fluid pressure of the master cylinder unit 10 to each of the first and second wheel cylinders; a separation valve 60 provided in a main flow passage 45 for making the first system communicate with the second system; a pressure control mechanism for independently controlling the operation fluid pressure transmitted to at least any one of the first and second wheel cylinders from the braking operation of a driver; and a brake ECU 70 for generating differential pressure at both sides of the separation valve 60 by operating the pressure control mechanism in such a state that no brake operation is performed during the stop of a traveling drive source of the vehicle and determining whether or not a leakage abnormality exists on the separation valve 60 based on the variation of the differential pressure. COPYRIGHT: (C)2007,JPO&INPIT
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