Hybrid electric vehicle engine starting with a preloaded damper spring
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United States of America Patent
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Sep 29, 2015
Grant Date -
Dec 4, 2014
app pub date -
May 29, 2013
filing date -
May 29, 2013
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Abstract
A method for starting an engine includes preloading a spring of a torsion damper by transmitting torque having a magnitude less than engine cranking torque from an electric motor through a clutch to the spring, before cranking the engine, increasing a torque capacity of the clutch, and using the electric motor to crank the engine in response to a command to start the engine.
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