| 摘要 |
PROBLEM TO BE SOLVED: To prevent adding unnecessary braking force on a wheel caused by a back flow of high pressure hydraulic fluid to a master cylinder to raise master cylinder pressure when a communicating control valve is opened during operation of an automatic braking device. SOLUTION: When an abnormal condition occurs in a linear valve during execution of behavior controlling and the communicating control valve 24L or 24R is opened (S10 to 90), target wheel cylinder pressure Pti of each wheel is calculated on the basis of an only step-in stroke St detected by a stroke sensor 70 for a specified period since a point of time when the communicating control valve is opened (S180 to 200). The target wheel cylinder pressure is calculated on the basis of the master cylinder pressure raised by the back flow of high pressure oil in a wheel cylinder side rather than the communicating control valve to the master cylinder 14, and the unnecessary braking force is prevented from being added to the wheel. COPYRIGHT: (C)2005,JPO&NCIPI
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