Patent ID: 6120111
Filing Date: 2000-09-19
Classification: B60T,Y10S

Abstract:
A brake hydraulic circuit for motor vehicles, which comprises:a master cylinder,a wheel cylinder,a main hydraulic circuit supplying hydraulic pressure from said master cylinder to said wheel cylinder having an inlet valve, anda hydraulic return circuit returning said hydraulic pressure from said wheel cylinder to said main hydraulic circuit having an outlet valve and a pump, whereinan accumulator is connected with a discharging side of said pump in said hydraulic return circuit,a pressure limit valve is provided between said accumulator and said discharging side of said pump,a hydraulic supply circuit, branching from a line between said pressure limit valve and said accumulator, is connected with a suction side of said pump of said hydraulic return circuit,a second switching valve is provided in said hydraulic supply circuit,a hydraulic branching circuit connects a pump suction side of said second switching valve of said hydraulic supply circuit, said discharging side of said pump of said hydraulic return circuit, and said main hydraulic circuit, anda brake fluid reserved in said accumulator is supplied to said main hydraulic circuit and is supplied to said pump via said hydraulic supply circuit.