| 摘要 |
A vacuum brake booster having subsidy atmosphere influx path is provided to realize increase of the output of the booster in short time by supplying additional atmospheric pressure. A vacuum brake booster having subsidy atmosphere influx path includes a control valve(4) forming the atmospheric pressure path and a plunger(5) connected to the operating rod(1) moved to axial direction in the brake pedal operation. A reaction disk and reaction piston are successively located towards the chamber unit in the control valve unit(2). The air is flown into a chamber unit and forms the vacuum negative pressure operating the master cylinder. An auxiliary air supply unit flows air into a transformation chamber of the chamber unit to form atmospheric pressure. |
