| 摘要 |
A pump for an electronic control brake system is provided to reduce noise occurring when the brake system operates by forming a shock absorption part between a sleeve and a valve cap. A pump for an electronic control brake system comprises a bore(35) communicating with a suction port(33) and a discharge port, a piston(41), a suction valve part(50) and a discharge valve part(60) disposed at a side of the bore. The piston is installed in the bore and has a suction passage(42). The suction valve part opens/closes an outlet of the suction passage corresponding to a position of the piston. The discharge valve part operates in opposition to the suction valve part. The discharge valve part includes a valve sheet(61), a sleeve(70) for covering the valve sheet, a discharge ball(62) for opening/closing a discharge passage(61a) of the valve sheet, and a valve cap(80) for blocking the bore. A shock absorption part(90) is formed between the sleeve and the valve cap to reduce pulsation of fluid. |
