Methods and systems for engine shut-down control
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United States of America Patent
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Apr 7, 2015
Grant Date -
Jul 8, 2010
app pub date -
Jan 2, 2009
filing date -
Jan 2, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An example method of operation comprises, selectively shutting down engine operation responsive to operating conditions and without receiving an engine shutdown request from the operator, maintaining the automatic transmission in gear during the shutdown, and during an engine restart from the shutdown condition, and with the transmission in gear, transmitting reduced torque to the transmission. For example, slippage of a forward clutch of the transmission may be used to enable the transmission to remain in gear, yet reduce torque transmitted to the vehicle wheels.
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