VEHICULAR BRAKE CONTROL APPARATUS

摘要

The brake ECU applies the target braking force by controlling the hydraulic pressure braking force generating device and the regeneration braking force generating device and the brake ECU further controls the advance speed of the output piston so that a drawn-into of a brake operating member can be prevented upon supplying the wheel cylinders from the master cylinder with the brake fluid by advancing the output piston thereby to improve the brake operating feeling of the brake operating member by preventing the brake operating member from being drawn into.

主权项

1. A vehicular brake control apparatus applied to a vehicular brake device which includes
a hydraulic pressure braking force generating device which generates a hydraulic pressure braking force at a vehicle wheel corresponding to a wheel cylinder to which a brake fluid is supplied from a master cylinder and a regeneration braking force generating device which generates a regeneration braking force at the vehicle wheel, wherein the master cylinder includes an input piston which slidably moves within the master cylinder and an output piston arranged at a front of the input piston and slidably movable within the master cylinder, the input piston is moved in association with an operation of a brake operating member, whereas the output piston is driven independently of the operation of the brake operating member, wherein the brake fluid is supplied to the wheel cylinder from the master cylinder by an advance movement of the output piston, the master cylinder is provided with a rear chamber defined by an inner peripheral portion of the master cylinder, a front end of the input piston and a rear end of the output piston, a front chamber defined by the inner peripheral portion of the master cylinder and a front end of the output piston, the volume thereof being decreased by the advance movement of the output piston and a brake fluid pathway connecting the rear chamber and the front chamber thereby introducing the brake fluid in the front chamber into the rear chamber by the advance movement of the output piston, wherein the vehicular brake control apparatus applies a target braking force to the vehicle wheel by controlling the hydraulic pressure braking force generating device and the regeneration braking force generating device and includes: a drive control means which controls an advance speed of the advance movement of the output piston to a set speed so that the brake operating member is prevented from being drawn into which occurs due to the advance movement of the output piston when the brake fluid is supplied to the wheel cylinder from the master cylinder by driving the output piston to advance.