Patent ID: 8277362

Claim:
A continuously variable transmission installed in a vehicle, comprising: a variator capable of varying a speed ratio continuously; a subtransmission mechanism provided in series with the variator and having a first gear position and a second gear position as forward gear positions, the second gear position having a smaller speed ratio than the first gear position; a destination through speed ratio setting unit which sets, on the basis of an operating condition of the vehicle, a destination through speed ratio, which is a target value to be reached by a through speed ratio serving as an overall speed ratio of the variator and the subtransmission mechanism in accordance with the operating condition; a target through speed ratio setting unit which sets, on the basis of the destination through speed ratio, a target through speed ratio serving as a transitional target value for making the through speed ratio to follow the destination through speed ratio at a predetermined transient response; a shift control unit which controls at least one of the variator and the subtransmission mechanism such that the through speed ratio follows the target through speed ratio; a coordinated shifting unit which performs a coordinated shift, in which the speed ratio of the subtransmission mechanism is varied while varying the speed ratio of the variator in an opposite direction to a speed ratio variation direction of the subtransmission mechanism so that the through speed ratio reaches the target through speed ratio, when modifying a gear position of the subtransmission mechanism; a second speed kick down shift determining unit which determines that a second speed kick down shift accompanied by modification of the gear position of the subtransmission mechanism from the second gear position to the first gear position is to be performed due to depression of an accelerator pedal; and a non-coordinated shifting unit which performs a non-coordinated shift, in which the gear position of the subtransmission mechanism is modified from the second gear position to the first gear position at a higher speed than when the gear position of the subtransmission mechanism is modified by the coordinated shift while permitting a deviation between the through speed ratio and the target through speed ratio, instead of the coordinated shift performed by the coordinated shifting unit when the second speed kick down shift determining unit determines that the second speed kick down shift is to be performed.