Patent ID: 9656646
Date: 2017-05-23
CPC Classifications: B60T

Claim:
1. An integrated electro-hydraulic brake system, comprising: a power source unit including an accumulator configured to store a pressure of a predetermined level, a pump configured to suck oil from a reservoir and discharge the oil to the accumulator in order to generate a pressure in the accumulator, and a motor configured to drive the pump; an integrated hydraulic control device including a master cylinder having two hydraulic circuits and configured to generate a hydraulic pressure, the reservoir connected above the master cylinder and configured to store oil, an in-valve and an out-valve configured to control a pressure delivered from the accumulator to a wheel cylinder installed in each wheel, a shut off valve configured to control a fluid pressure delivered from the master cylinder to the wheel cylinder, a pedal simulator connected to the master cylinder and configured to provide a reaction force of a brake pedal, and a simulation valve installed in a rear end of the pedal simulator; and a control valve disposed in a connection passage connecting the out-valve and the reservoir and configured to perform control such that the fluid pressure flowing through the out-valve flows to the reservoir, wherein the control valve is provided as the normally close type-solenoid valve that normally maintains a close state in order to prevent the fluid pressure generated from the master cylinder from flowing to the reservoir when the integrated electro-hydraulic brake system abnormally operates, and wherein the out-valve is provided as a normally open type-solenoid valve that normally maintains an open state in order to reduce heat generation.