Nissan Motor Company Limited

Jatco Corporation

Satoru Ishii

Hiroyasu Tanaka

Mamiko Inoue

Takuichiro Inoue

Ryousuke Nonomura

Yoshinori Yamamura

Seiichirou Takahashi

Fumito Shinohara

Masato Mori

Norio Asai

Daisuke Nagae

A control device for a transmission is used in a transmission that is provided with a continuously variable transmission mechanism including a primary pulley to which a drive force of a drive source mounted on a vehicle is input, a secondary pulley that transmits the drive force of the drive source to a drive wheel, and an endless annular member that is wound around the primary pulley and the secondary pulley. The control device includes a controller configured to perform a gear shift control of changing a transmission gear ratio of the continuously variable transmission mechanism to a high side when rotational oscillation occurs in a rotation member of the continuously variable transmission mechanism and then the rotational oscillation decreases a rotation speed of the rotation member.

Control device for transmission

A transmission controller executes synchronization shift of shifting a variator in a direction opposite to a speed ratio change direction of a sub transmission mechanism when shifting a sub transmission mechanism. When a gear position of the sub transmission mechanism is at the second gear position and an output increase request of a power source is made, the transmission controller prohibits the synchronization shift and shifts only the sub transmission mechanism from a second gear position to a first gear position.

Continuously variable transmission and method of controlling the same

Growing community of inventors

Yokohama, Japan

Satoru Ishii