LUBRICATED AUTOMOTIVE VACUUM PUMP

A lubricated automotive vacuum pump which provides a low-pressure for an automotive actuator includes a static pump housing which houses a pump chamber radially defined by a chamber surface, a pump rotor having a cylindrical rotor bearing surface and a rotor body having a vane slit, a vane which is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PERONI, Giorgio, SQUARCINI, Raffaele
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	A lubricated automotive vacuum pump which provides a low-pressure for an automotive actuator includes a static pump housing which houses a pump chamber radially defined by a chamber surface, a pump rotor having a cylindrical rotor bearing surface and a rotor body having a vane slit, a vane which is shiftably supported by and radially shiftable in the vane slit and which separates the pump chamber into rotating compartments, a friction bearing which rotatably supports the pump rotor at the static pump housing, a pump gas inlet and outlet, an oil inlet channel which provides lubrication oil to the pump rotor, a separate oil outlet opening arranged at the rotor body, and a switchover valve for temporarily connecting the separate oil outlet opening with an oil drain. The friction bearing is defined by a cylindrical stator friction bearing surface and by the cylindrical rotor bearing surface.