Aisin Aw Co., Ltd.

Masachika Kato

Akihiro Kikkawa

Kiyoshi Kurita

Masaki Ueda

Hiroshi Tsutsui

A speed change ECU for a CVT sets a target input rotational speed (Nin*) such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed (Nin*) such that the time interval between consecutive downshifts becomes longer as the number of times of execution of downshifts is increased on the basis of intershifting times (tint()), (tint()), . . . while downshifts in which the speed ratio is varied stepwise are executed consecutively.

Control device and control method for continuously variable transmission

A speed change ECU for a CVT sets a target input rotational speed Nin* such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed Nin* such that an amount of increase S(), S(), . . . in input rotational speed along with a downshift becomes smaller as the number of times of execution of downshifts is increased while downshifts in which the speed ratio is varied stepwise are executed consecutively.

A control device for a continuously variable transmission that steplessly changes a speed ratio of the continuously variable transmission mounted on a vehicle, the control device including a controller that changes the speed ratio such that a stepwise upshift is performed, wherein in the case where an accelerator depression amount is constant, the controller increases a number of allowable stepwise upshifts as the accelerator depression amount is larger.

A control device for a continuously variable transmission, which sets a target input rotational speed, or a target value of an input rotational speed of the continuously variable transmission mounted on a vehicle, such that a speed ratio is changed in a stepped manner and which controls the continuously variable transmission such that the input rotational speed becomes equal to the target input rotational speed.

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Anjo, Japan

Masachika Kato