Patent ID: 6065815
Filing Date: 2000-05-23
Classification: B60T

Abstract:
An antilock brake system for an automotive vehicle comprising:a plurality of wheel cylinders;a reservoir for storing low-pressure brake fluid;an accumulator for storing high-pressure brake fluid;a high-pressure brake fluid output line connected to the wheel cylinders and adapted to communicate with the accumulator;a pump connected to said reservoir and said high-pressure brake fluid output line for pressurizing the low-pressure brake fluid in the reservoir and supplying pressurized brake fluid to said high-pressure brake fluid output line during operation of said pump;means for preventing flow of pressurized brake fluid in the high-pressure brake fluid output line into the accumulator during operation of the pump until hydraulic pressure inside the high-pressure brake fluid output line exceeds the hydraulic pressure in the accumulator by a predetermined amount so that the pressurized brake fluid produced by operation of the pump is supplied to at least one of the wheel cylinders while being prevented from flowing into the accumulator and for permitting flow of pressurized brake fluid in the high-pressure brake fluid output line into the accumulator during operation of the pump when the hydraulic pressure inside the high-pressure brake fluid output line exceeds the hydraulic pressure in the accumulator by said predetermined amount.