Patent ID: 7040720

Claim:
A hydraulic control system for a vehicle, comprising: a hydraulic unit housing which houses a hydraulic mechanism including a pump motor for regulating a hydraulic pressure for a vehicle control and a plurality of solenoid valves; and a solenoid cover which is attached to the hydraulic unit housing so as to cover an opening that is formed at one end of the hydraulic unit housing, wherein the solenoid valves are housed in a solenoid valve position region in a solenoid valve housing chamber formed by the opening and the solenoid cover, and in the solenoid valve housing chamber, an air vent which communicates the solenoid valve housing chamber with an outside thereof is formed at a lowermost portion, a lower space with a predetermined volume is formed between the solenoid valve position region and the air vent, a labyrinth portion is formed between the air vent and the lower space, the labyrinth portion including at least one partition plate that inhibits flow of a fluid between the air vent and the lower space, and the labyrinth portion includes a partition plate which is inclined with respect to an up-down direction of the solenoid valve housing chamber, and a lower communication hole at a lower portion thereof to allow the flow of the fluid.