Patent ID: 8210620
Filing Date: 2012-07-03
Classification: B60T

Abstract:
1. A braking force control system for vehicles adapted to execute a braking force increasing control when a driver makes a quick braking operation, and to execute a braking force increase suppressing control for suppressing the increase of the braking force with respect to a selected wheel or wheels when the vehicle is in a determined running condition, comprising: control valves provided for respective wheels to adjust braking pressures of the respective wheels, a pump for pressurizing a brake oil, a braking root pressure control valve to increase or decrease a braking root pressure supplied to the respective control valves for a pair of left and right ones of the respective wheels by selectively releasing the brake oil pressurized by the pump, a judging device to judge an initiation or a high probability thereof of the braking force increase suppressing control with respect to both of the pair of left and right ones of the respective wheels, and a braking pressure control device to operate the control valves provided for the respective wheels so as to adjust the braking pressures of the respective wheels, the braking pressure control device suppressing the increase of the braking root pressure by also operating the braking root pressure control valve when the initiation or the high probability thereof of the braking force increase suppressing control is judged by the judging device during the braking force increasing control with respect to the pair of left and right ones of the respective wheels as compared to when the initiation or the high probability thereof of the braking force increase suppressing control is not judged, wherein the braking pressure control device decreases an increasing gradient of the braking root pressure to suppress the increase of the braking root pressure, and when an initiation or a high probability thereof of an anti-skid control with respect to one of the front left and front right wheels is judged and an initiation or a high probability thereof of a yaw behavior control with respect to the other of the front left and front right wheels for suppressing an increase of a difference between the braking forces of the front left and front right wheels is also judged, the braking pressure control device decreases the increase gradient of the braking root pressure of both of the front left and front right wheels.