| 摘要 |
PROBLEM TO BE SOLVED: To give acceleration feeling to a driver during acceleration of a vehicle mounted with a continuously variable transmission and to suppress reduction of a distance that the vehicle can travel at a unit fuel amount. SOLUTION: The speed-change ratio control device is provided with a target frequency of revolution operation part for transition speed-change for determining the target frequency of revolution NINt for transition speed-change as a candidate of a rotation speed of a primary shaft when transition speed-change requirement exists relative to the vehicle; and a shift ratio control part for controlling a shift ratio such that the rotation speed of the primary shaft becomes the target frequency of revolution NINt for transition speed-change when the transition speed-change requirement exists. When the target frequency of revolution NINt for transition speed-change is larger than the basic target frequency of revolution NINc for attaining an output aimed at by the vehicle at the minimum fuel consumption, the transition speed-change target frequency of revolution operation part determines the target frequency of revolution NINt for transition speed-change based on the output aimed at by the vehicle and the fuel consumption optimum line. COPYRIGHT: (C)2009,JPO&INPIT
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