Method for controlling a hybrid vehicle
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United States of America Patent
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Oct 3, 2006
Issued Date -
N/A
app pub date -
Sep 2, 2004
filing date -
Sep 10, 2003
priority date (Note) -
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Abstract
A method for controlling a wheel drive system of a hybrid electric vehicle when starting a power source. The hybrid electric vehicle includes first and second power sources, a motor, and a power transfer unit adapted to drive a vehicle wheel. The method includes determining whether the first power source is to be started, determining whether a level of torque requested by a vehicle operator is greater than a threshold value, maintaining a current gear ratio if the threshold value is exceeded, and providing a target level of torque to the power transfer unit.
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