CAVITATION-DETERRING ENERGY-EFFICIENT FLUID PUMP SYSTEM AND METHOD OF OPERATION
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United States of America Patent
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N/A
Issued Date -
Nov 6, 2008
app pub date -
May 1, 2008
filing date -
May 3, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A variable nozzle area jet pump is provided having a nozzle-sealing member resiliently urged to form a sealing closure. The sealing member is part of a normally non-passing pressure control valve that recirculates excess fluid back to the inlet of a positive displacement fluid pump. The fluid is recirculated with elevated pressure after a threshold fluid pressure is exceeded. The disclosed system provides for energy conservation and pump cavitation speed increase. The system may be integrated with an engine balance shaft module so as to provide low cost robustness to low speed gear noise emissions by application of the oil pump's drive torque to at lease one gearset.
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