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Vacuum Pumps

Force increase for many applications

Vacuum pumps produce the required vacuum for the brake boosters, as well as for controlling the functions of the central locking system, air conditioning, automatic transmission unit, emission control systems and other control elements. Due to the hydraulic principle, this allows for high adjusting forces in a small installation space.

As an OEM, Pierburg boasts decades of expertise in development and manufacturing, and its innovative concepts have made significant contributions to the state of the art.

Table of Contents

Mechanical vacuum pumps Tandem pumps fuel/vacuum Tandem pumps, vacuum/oil Electric vacuum pumps

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Technipedia

Mechanical vacuum pumps

Mechanical vacuum pumps can be driven by means of cams, tappets, chains, belts, or cam discs. Pumps that move a piston or diaphragm back and forth and generate a vacuum are well established in the field.

A newer development is vane pumps with a rotary drive. Here, a rotor with one or more vanes forms compartments, the size of which varies during the work cycle.

Tandem pumps fuel/vacuum

In "tandem pumps", vacuum pumps are combined with other supply pumps on a common axle. In the fuel/vacuum combination, they fulfil the functions of mechanical vacuum pumps and are also used for fuel feed.

Tandem pumps, vacuum/oil

While the single-vane pump generates the vacuum for the brake booster, the connected G-rotor oil pump draws in excess oil from the cylinder head and conveys it back to the crankcase sump.

Electric vacuum pumps

Electric vacuum pumps can be switchedon independently of the vehicle engine,and on demand. This saves fuel andreduces emissions.

In hybrid vehicles, electric vacuum pumps maintain brake boosters when the combustion engine is switched off.

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