Patent ID: 7575287
Filing Date: 2009-08-18
Classification: B60K,B60T,B60W,Y02T

Abstract:
1. A vehicle brake system for controlling a frictional braking force applied to a wheel of a vehicle by means of a friction brake and a regenerative braking force applied to the wheel of the vehicle by a motor; said vehicle brake system comprising: an anti-lock controller for performing anti-lock control in which the friction brake is controlled to prevent the wheel from locking when the wheel shows a tendency to lock; calculating means for calculating a predetermined force before start of said anti-lock control, wherein said predetermined force is always greater than zero and less than the regenerative force being applied to the wheel; regenerative braking force adjusting means for reducing the regenerative braking force to said predetermined force before the start of said anti-lock control; frictional braking force adjusting means for increasing the frictional braking force corresponding to the reduction of the regenerative braking force by said regenerative braking force adjusting means; regenerative braking force holding means for holding the regenerative braking force at said predetermined force after the regenerative braking force has been reduced to said predetermined force by said regenerative braking force adjusting means; and a regenerative braking force reducing means for reducing said regenerative braking force from said predetermined force when said anti-lock control starts.