Pierburg – Vacuum Pumps

Electric Vacuum Pumps

Electric vacuum pumps can operate independently of the vehicle’s engine and are activated only when needed. This helps reduce fuel consumption and emissions. In hybrid vehicles, these pumps ensure that brake booster assistance remains available even when the combustion engine is switched off.

Main advantages:
→ Maintain full brake booster efficiency
→ Can be switched off and controlled according to operating requirements
→ Help reduce fuel consumption and emissions compared to mechanical pumps
→ Deliver high performance
→ Require no maintenance
→ Feature a robust and reliable design
→ Rubber mounts provide excellent vibration isolation, reducing noise and ensuring exceptionally quiet operation
→ Ensure optimal operation even in start/stop systems
→ Ideal for hybrid and fully electric vehicles

Mechanical Vacuum Pumps

Mechanical vacuum pumps are driven by components such as cams, tappets, chains or cam discs. The most efficient versions generate vacuum through the reciprocating movement of a piston or diaphragm. A more recent development is the rotary vane vacuum pump: a rotor equipped with one or more vanes creates chambers of varying volume during operation, generating the required vacuum.

Tandem Fuel/Vacuum Pumps

So-called “tandem pumps” combine a vacuum pump and a fuel supply pump mounted on the same shaft. In this configuration, the vacuum section performs the same functions as a conventional mechanical vacuum pump, while the fuel section supplies fuel to the engine, combining two systems into a single compact and efficient unit.

Tandem Vacuum/Oil Pumps

In tandem vacuum/oil pumps, the single-vane vacuum pump generates the vacuum required for the brake booster, while the oil pump section — equipped with a G-rotor — draws excess oil from the cylinder head and returns it to the oil sump, ensuring continuous oil circulation and optimal lubrication.