Vacuum servo
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A vacuum servo is a component used on motor vehicles in their braking system, to provide assistance to the driver by decreasing the braking effort. In the US it is commonly called a brake booster.
A vacuum servo, also known as a power booster or power brake unit, uses a vacuum, usually supplied by the engine, to multiply the driver's pedal effort and apply that effort to the master cylinder. [1]
Because the servo depends on the vacuum supplied by a running engine, a check valve is typically used in the vacuum line to maintain residual vacuum without engine support, allowing limited use even after parking.
See also
[edit]Notes
[edit]- ^ "Brakes - Hydraulic - EduMech". www.edumech.co.uk. Archived from the original on 2016-04-25. Retrieved 2016-04-25.
External links
[edit]- What is a brake booster?
- "How Power Brakes Work", (a 4-page basic tutorial article, with illustrations & animation) at HowStuffWorks.com
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