Patent ID: 9393938
Filing Date: 2016-07-19
CPC Classification: B60T

Claim Text:
1. A brake control apparatus for a vehicle, the brake control apparatus comprising: a main brake controller configured to control a brake fluid pressure supplied to main brakes provided to four wheels of the vehicle according to a traveling condition of a preceding vehicle so as to automatically stop the vehicle, as a stop condition, using a braking operation of the main brakes, and to maintain the stop condition; and an auxiliary brake controller configured to control parking auxiliary brakes provided to right and left front wheels or right and left rear wheels of the vehicle to perform a braking operation of the parking auxiliary brakes so as to maintain the stop condition of the vehicle, wherein, when the auxiliary brakes perform the braking operation of the auxiliary brakes while the brake fluid pressure is being supplied to the main brakes to stop the vehicle, the main brake controller reducing the brake fluid pressure according to a first rate to a predetermined fluid pressure value and then reducing the brake fluid pressure according to a second rate before the main brakes are released, wherein the first rate is greater than the second rate, wherein, when a signal from the auxiliary brakes indicates that that the auxiliary brakes perform the braking operation of the auxiliary brakes, the main brake controller then automatically performs a reduction of the brake fluid pressure and then automatically releases the main brakes, wherein the main brake controller is configured to control the brake fluid pressure of the main brakes while the auxiliary brakes are working, and wherein said reducing the brake fluid pressure according to the first rate of the brake fluid pressure and said reducing the brake fluid pressure according to the second rate of the brake fluid pressure are synchronized with the braking operation of the parking auxiliary brakes.