Patent ID: 8746809
Filing Date: 2014-06-10
Classification: B60T,F16D

Abstract:
1. A vehicle brake control device comprising: a first frictional member; a second frictional member attached to a vehicle wheel; an electronic parking brake configured to electrically generate a braking force by the first frictional member and the second frictional member; a service brake configured to hydraulically generate a braking force by the first frictional member and the second frictional member; and an electronic controller configured to control operations of the electronic parking brake and the service brake, wherein the electronic parking brake includes: wherein the service brake includes: wherein the electronic controller includes a determining unit configured to determine a contact state where the moving member of the electronic parking brake contacts the pressing member, wherein the electronic parking brake performs a pressure-decreasing limit control of limiting the decrease in the hydraulic brake pressure by the hydraulic brake pressure adjusting unit if the contact state is not reached during the locking operation, and ends the pressure-decreasing limit control if the moving-member contact state is reached, and wherein the pressure-decreasing rate of the hydraulic brake pressure is adjusted so that a sum of an impact force of the moving member on the pressing member at the time of bringing the moving member into contact with the pressing member, which is generated due to the movement of the moving member by the electronic parking brake at the time of performing the locking operation, and an impact force of the pressing member on the moving member at the time of bringing the pressing member into contact with the moving member, which is generated in the pressing member due to the decrease in the hydraulic brake pressure in the wheel cylinder and which is predicted based on the pressure-decreasing rate of the hydraulic brake pressure, is not greater than a predetermined threshold value.