Methods and systems for starting an engine
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United States of America Patent
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Jan 22, 2019
Grant Date -
Feb 18, 2016
app pub date -
Aug 18, 2014
filing date -
Aug 18, 2014
priority date (Note) -
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Abstract
Methods and systems are provided for improving engine restart operations in a hybrid vehicle. While an engine is cranked via motor torque, engine fueling is delayed until the engine speed is sufficiently high and the engine has been rotating in a forward direction continuously for a threshold duration. A disconnect clutch between the engine and motor is slipped while the engine cranks, the clutch engaged only after the engine has run up to the motor speed.
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