Fuel pump having single sided impeller
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United States of America Patent
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-
Mar 7, 2006
Grant Date -
Nov 10, 2005
app pub date -
May 10, 2004
filing date -
May 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fuel pump is provided having improved efficiency by lowering the wet circle index of the pump while maintaining robust axial clearances to meet the demands of an automotive application. One embodiment includes a fuel pump for pressurizing fuel for delivery to an engine of a motor vehicle. The fuel pump generally comprises a housing, a motor, a single sided impeller, a cover and a body. The provision of a single sided impeller greatly reduces the wet circle index and improves the pump efficiency. The cover, impeller, and body are structured to axially balance the impeller which is free floating on the shaft of the motor.
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