| 摘要 |
PURPOSE:To vary the jumping quantity during the operation of a brake booster and the ratio in an intermediate loaded state after jumping according to the need of each kind of a vehicle on which a brake booster is mounted. CONSTITUTION:A valve plunger 2 is constituted of the first member 11 on an input shaft side and the member 12 on a reaction disc 4 side. An uneven surface is foamed on the contact part with the reaction disc of the second member. When brake feeling is changed according to the need of each kind of a vehicle on which a brake booster is mounted, the proper second member 12 is selected and installed on the first member 11. Accordingly, the jumping quantity and the servo ratio in an intermediate loaded state after jumping can be varied easily. |
