APPARATUS OF BRAKE OIL PRESSURE WHEN ENGINE IS STALLED IN DRIVING OF A CAR

摘要

The present invention discloses a brake hydraulic pressure supply device at start 'off' while driving a vehicle. The disclosed invention, the vacuum chamber 10 is connected to one side of the intake manifold of the engine, the negative pressure is provided; A check valve (12) interposed between the vacuum chamber (10) and the intake manifold to prevent negative pressure from flowing back into the intake manifold; A brake cylinder 13 installed in the vacuum chamber 10 and having one side in the same direction to which the intake manifold is connected to the brake pipe 6; The brake cylinder 13 is moved by the negative pressure formed in the vacuum chamber 10, and the front end portion compresses the hydraulic pressure to force the brake pipe 6, and the rear end in the opposite direction to the one side is the vacuum chamber 10 A piston 14 having a size sufficient to seal the; And a device 15 for selectively locking the rear end of the piston 14, wherein the locking device 15 is operated by an electronic control unit which detects when the starting is 'off' while driving to release the locked state. It is characterized by.