To vary a through change gear ratio to a large change gear ratio side quickly even during a kick down shift involving modification of a gear position of a subtransmission mechanism, thereby preventing a delay in driving force increase and improving a shift feeling.
A transmission controller 12 performs a coordinated shift of changing a change gear ratio of a variator 20 to a direction reverse to a change direction of a change gear ratio of the sub-transmission mechanism 30, while changing the change gear ratio of the sub-transmission mechanism 30, to bring the through change gear ratio into a target through change gear ratio, when varying the change gear ratio of the sub-transmission mechanism 30. On the other hand, the transmission controller 12 performs a non-coordinated shift of varying a gear position of the sub-transmission mechanism 30 from the second gear position to the first gear position at a higher speed than that in the coordinated shift, while allowing a deviation between the through change gear ratio and the target through change gear ratio, instead of the coordinated shift, when performing the kick-down shift (the second gear position kick-down shift) involving modification of the gear position of the sub-transmission mechanism 30 from the second gear position to the first gear position, due to depression of an accelerator pedal.
TANAKA HIROYASU
INOUE TAKUICHIRO
SEKI JOJI
INOUE MAMIKO
TAKAHASHI SEIICHIRO
NISSAN MOTOR
| JPH1151162A | 1999-02-23 | |||
| JPH08178043A | 1996-07-12 | |||
| JP2007118727A | 2007-05-17 |
Masahiro Fujii
Masaaki Iida
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