Patent ID: 6192308
Filing Date: 2001-02-20
Classification: B60T

Abstract:
A brake control device of a vehicle having wheels and a brake system for the wheels including wheel cylinders for applying a braking force to each corresponding one of the wheels according to a supply of a pressurized brake fluid thereto, a brake pedal adapted to be depressed by a driver, a master cylinder adapted to generate a master cylinder pressure which increases along with an increase of a depression of the brake pedal by the driver, a motor powered pump for pressurizing the brake fluid, and control means for selectively supplying the brake fluid pressurized by the pump to at least a selected one of the wheel cylinders according to the depression of the brake pedal by the driver, the brake control device comprising:first means for detecting the depression to exceed a first threshold value determined therefor;second means for detecting the depression to exceed a second threshold value determined therefor to be larger than the first threshold value;third means for calculating a target pressure of the brake fluid to be supplied to the selected one wheel cylinder based upon the brake fluid pressurized by the pump according to the depression;fourth means for storing a value of the depression either at a moment when the first means detects for a first time the depression exceeding the first threshold value or at a moment when the second means detects for a first time the depression exceeding the second threshold value with the first means failing to detect the depression exceeding the first threshold value; andfifth means for controlling the fluid pressure supplied to the selected one wheel cylinder at each successive moment according to the depression at the successive moment to be a pressure value of the target pressure calculated by the third means at the successive moment for a depression value smaller than a momentary value of the depression at the successive moment substantially as much as the depression value stored in the fourth means.