Toyota Jidosha Kabushiki Kaisha

Masayuki Fukai

Seitoku Kubo

Hiroshi Itoh

Tokuyuki Takahashi

Shinji Oita

Yusuke Ohgata

Terasu Harashima

Megumi Fujikawa

A power transmission device includes a first power transmission path that is provided between an engine and a driving wheel, and a second power transmission path that is provided between the engine and the driving wheel and that is provided in parallel with the first power transmission path. The first power transmission path includes a first clutch and a secondary clutch that is arranged on the driving wheel side with respect to the first clutch. The second power transmission path includes a continuously variable transmission and a second clutch. The secondary clutch is configured to make a changeover between a first mode and a second mode.

Power transmission device for vehicle

A vehicle transmission including a first, a second and a third planetary gear unit coaxially disposed between an input and an output member. The three units have respective first, second and third sun gears, respective first, second and third planetary gears, respective first, second and third carriers, and respective first, second and third ring gears. The first carrier, second ring gear, third sun gear and output members are connected to each other, while the second carrier and the third ring gear are connected to each other. The transmission has a first and a second coupling device for connecting the first ring and sun gears to the input member, respectively, a third and a fourth coupling device for connecting the first sun gear to the second sun gear and to the second carrier and third ring gear, respectively, a fifth coupling device for fixing the third carrier to a stationary member, a sixth coupling device, for fixing the second carrier and third ring gear to the stationary member, and a seventh coupling device for fixing the second sun gear to the stationary member.

Planetary gear transmission for motor vehicle

Growing community of inventors

Nagoya, Japan

Masayuki Fukai