Speed changing control system for a vehicle
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United States of America Patent
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Jul 9, 2013
Grant Date -
Jul 26, 2012
app pub date -
Sep 14, 2011
filing date -
Jan 20, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A speed changing control system for a vehicle including a speed changing device for speed changing a rotational power from an engine and outputting the resultant power, a speed changing control unit for setting a speed change ratio of the speed changing device, and an engine control unit for setting an engine rotational speed of the engine. Based on an operational instruction in response to a driver's operation, a rotational speed reducing instruction is given to the engine control unit for reducing an engine rotational speed set by the engine control unit by a predetermined amount. Also, a speed changing ratio changing instruction is given to the engine control unit for requesting, to a speed changing control unit, a change of the speed change ratio for compensating for the reduction in the engine rotational speed by the rotational speed reducing instruction so as to maintain the vehicle speed.
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