When brake pedal is pushed by the driver, brake fluid is forced into the brake cylinder by the action at the master cylinder, and the two pistons are forced outward.

当驾驶员踩下制动踏板时，制动液由于主缸的作用进入轮缸，推动两个活塞向外侧移动。

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The utility model relates to an improvement on the component structure of the chassis braking system of vehicle, in particular to a vacuum booster band brake master cylinder fluid reservoir.

本实用新型涉及的是汽车底盘制动系统部件结构的改进，特别是涉及到一种真空助力器带制动主缸储液罐。

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