Oil pump for automatic transmission
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United States of America Patent
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-
Oct 16, 2007
Grant Date -
Oct 28, 2004
app pub date -
Sep 25, 2003
filing date -
Sep 25, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An oil pump for an automatic transmission includes a pump body having a pump chamber, a pump cover disposed so as to oppose to the pump body, an inner rotor disposed in the pump chamber and driven by a driving force from a torque converter and an outer rotor meshed with the inner rotor. The pump body includes a pump suction port, a pump discharge port a first oil, passage for supplying oil from a oil pan to the pump suction port, a second oil passage for returning excess oil of a first regulator to the first oil passage and a third oil passage having an outlet port for returning excess oil of a second regulator to the pump suction port.
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