| 摘要 |
Vacuum brake booster comprising a vacuum housing subdivided by a piston into a vacuum chamber and a variable-pressure chamber for amplifiying the input force Fe and applying the output force to the master cylinder. The piston is carried by a valve body connected to the control rod by a plunger piston collaborating with the valve to command the pulling of a vacuum in the variable-pressure chamber or the venting thereof to atmosphere at the moment of braking. The air path passes via the opening through the inlet filter, the inside of the body and the passage of the sealing seat controlled by the valve to pass through the passage of the body opening between the cover and the piston into the chamber. The outlet of the passage is covered by a slowing filter. |
