Engine Oil Maintenance Monitor For A Hybrid Electric Vehicle
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United States of America Patent
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Issued Date -
Mar 5, 2015
app pub date -
Aug 29, 2013
filing date -
Aug 29, 2013
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Abstract
A hybrid vehicle is provided with an engine having a crankshaft and an electric machine coupled to the crankshaft. The hybrid vehicle also includes a pump and a controller. The pump is driven by rotation of the crankshaft and coupled to the engine by a fluid circuit. The controller is configured to control the electric machine in response to a wheel torque request to drive the crankshaft with the engine off to provide lubricant to the engine.
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