Patent ID: 6606548
Filing Date: 2003-08-12
Classification: B60T,Y10S

Abstract:
A method for pressure increase in a wheel cylinder of a hydraulic brake pressure controller to provide a braking force to a wheel by supplying brake pressure from a hydraulic pressure generator to the wheel cylinder, the method for pressure increase in the hydraulic brake pressure controller being conducted based on a pressure differential between a hydraulic pressure of brake fluid supplied from the hydraulic pressure generator and a brake hydraulic pressure in the wheel cylinder when the brake pressure in the wheel cylinder is increased by the hydraulic pressure controller including calculating an estimated vehicle speed based on a wheel speed of the wheel, and calculating an estimated vehicle deceleration based on the hydraulic pressure of the brake fluid supplied from the hydraulic pressure generator, wherein the estimated vehicle deceleration is calculated to be a first set value when the hydraulic pressure of the brake fluid supplied from the hydraulic pressure generator is zero, the estimated vehicle deceleration being calculated to be directly proportional to the hydraulic pressure of the brake fluid supplied from the hydraulic pressure when the hydraulic pressure of the brake fluid supplied from the hydraulic pressure is greater than zero and less than a first pressure, and the estimated vehicle deceleration being calculated to be a second value different from the first value when the hydraulic pressure of the brake fluid supplied from the hydraulic pressure generator is greater than the first pressure.