| 摘要 |
A pilot valve of a vehicle brake system is disclosed. According to an embodiment of the present invention, the pilot valve of the vehicle brake system may comprise: a cylindrical sleeve provided in an oil inlet passage of a low-pressure accumulator; a valve seat which is coupled to the lower part of the sleeve, and has a seat surface on a hollow interior; a plunger which is provided on the inner sleeve to be able to be lifted, has a center hole to form a first opening and closing passage therein, and forms the seat surface and a second opening and closing passage on the outside; a ball valve disposed in the interior of the plunger to be in contact with the center hole; a first spring for elastically pressurizing the ball valve; a second spring provided between the valve seat and the plunger; and a valve pin which is provided on a piston of the low-pressure accumulator to be in contact with the ball valve. |
