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2. Vacuum servo - Wikipedia

   en.wikipedia.org/wiki/Vacuum_servo

   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 ...

3. Vacuum pump - Wikipedia

   en.wikipedia.org/wiki/Vacuum_pump

   A vacuum pump is a type of pump device that draws gas ... Production of most types of electric lamps, vacuum ... vacuum servo booster for the hydraulic brakes, ...

4. Power brakes - Wikipedia

   en.wikipedia.org/wiki/Power_brakes

   Vacuum boosters provide brake assist for the driver by multiplying the force out of the booster creating more than the force that was used to push on the brake pedal. The booster works by pulling the air out of the booster chamber with a pump or other vacuum source (typically the engine's intake manifold [1]), creating a low-pressure system ...

5. Vacuum brake - Wikipedia

   en.wikipedia.org/wiki/Vacuum_brake

   Vacuum brake cylinder in running position: the vacuum is the same above and below the piston Air at atmospheric pressure from the train pipe is admitted below the piston, which is forced up. In its simplest form, the automatic vacuum brake consists of a continuous pipe—the train pipe—running throughout the length of the train.

6. Electronic stability control - Wikipedia

   en.wikipedia.org/wiki/Electronic_stability_control

   A similar modulator is used in ABS. Whereas ABS reduces hydraulic pressure during braking, ESC may increase pressure in certain situations, and an active vacuum brake booster unit may be utilised in addition to the hydraulic pump to meet these demanding pressure gradients.

7. Automobile accessory power - Wikipedia

   en.wikipedia.org/wiki/Automobile_accessory_power

   The vacuum is only an assist and the brakes can still function, requiring greater force, if the booster vacuum is used up. Many older vehicles used vacuum-powered windshield wipers. Loss of manifold vacuum when the engine was working hard, or at wide open throttle, necessitated using a vacuum booster pump which was usually part of the fuel pump.