Rotating electrical machine cooling system
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United States of America Patent
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Dec 16, 2014
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N/A
app pub date -
Feb 22, 2013
filing date -
Feb 22, 2012
priority date (Note) -
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Abstract
A rotating electrical machine cooling system includes a cooling structure for a rotating electrical machine that is mounted on a hybrid vehicle, and a controller. The cooling structure includes a coolant discharge channel and a coolant supply channel through which a coolant is circulated between an oil pump unit and the interior of a case body that includes the rotating electrical machine therein. The cooling structure further includes a bypass flow channel that connects the oil pump unit and the interior of the case body with each other, and a relief valve that is provided in the bypass flow channel. The oil pump unit includes a mechanical oil pump and an electric oil pump.
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