Nissan Motor Company Limited

Masayoshi Kimura

Kazuhiro Yamada

Masaki Nakano

Hiroyuki Hirano

Hiromasa Sakai

Hirofumi Shimizu

Yasushi Narita

Motoharu Nishio

Tatsuya Nagato

Hiroaki Kuramoto

Eio Sagara

An infinite Speed ratio continuously variable transmission comprises a power recirculation mode clutch ( ) and direct mode clutch ( ). At least one of the power recirculation mode clutch ( ) and direct mode clutch ( ) comprises an electromagnetic two-way clutch. The electromagnetic two-way clutch maintains the engaged state during excitation and can transmit drive force from both the drive side and non-drive side. On the other hand, when there is a change-over from the energized state to the non-energized state, a one-way clutch state is obtained wherein drive force is permitted only in the transmission direction of drive force in the instant of the change-over to non-excitation. When a drive force is input in the reverse direction to the drive force transmitted in the one-way clutch state, the one-way clutch state is disengaged, and the disengaged state of the clutch is maintained until subsequent re-excitation. Therefore, change-over of the clutch at the rotation synchronous point RSP where the power recirculation mode and direct mode are changed over, can be performed rapidly.

Infinite speed ratio continuously variable transmission

Growing community of inventors

Yokosuka, Japan

Masayoshi Kimura