Variable displacement lubricant pump

The present invention refers to a variable displacement lubricant pump (10) for providing pressurized lubricant for an internal combustion engine. The mechanical pump (10) comprises a pump rotor (20) with radially siidable vanes (22) rotating in a shiftable control ring (14), whereby the control rin...

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Main Authors FIORINI STEFANO, SQUARCINI RAFFAELE, GASPERINI MATTEO, LAZZERINI MASSIMILIANO
Format Patent
LanguageChinese
English
Published 30.01.2013
Subjects
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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Summary:The present invention refers to a variable displacement lubricant pump (10) for providing pressurized lubricant for an internal combustion engine. The mechanical pump (10) comprises a pump rotor (20) with radially siidable vanes (22) rotating in a shiftable control ring (14), whereby the control ring (14) envelopes numerous pump chambers (24). The pump chambers (24) rotate through a charge and a discharge zone (32, 34) inside the control ring (14). Further, the pump (10) comprises a pretensioning element (42) which is pushing the control ring (14) to a high pumping volume direction. A first control chamber (28) is pushing the control ring (14) to a low pumping volume direction, and a second control chamber (30) is pushing the control ring (14) to a high pumping volume direction if the lubricant is pressurized. The pump (10) also comprises a pump outlet (48) which is connected to the first control chamber (28). Both control chambers, i.e. the first and the second control chamber (28, 30), are connected to each
Bibliography:Application Number: CN2010866952