Toyota Jidosha Kabushiki Kaisha

Yoshiro Obayashi

Kunihiro Iwatsuki

Kazuki Sugie

Satoshi Shimizu

Atsushi Yamanaka

Masayuki Arai

Ryota Horie

Hideki Tamoto

Norihiro Mizoguchi

Yosuke Shimura

Kosuke Yonekawa

Shintarou Mukougawa

Yasuhiro Hirao

Masashi Chihara

A rotation state of each rotating element of a four-wheel drive vehicle and an operating state of each engagement element of a disconnect mechanism, corresponding to an operating state of the disconnect mechanism, are displayed on or near a vehicle model image on a vehicle display. Thus, it is possible to inform a driver of the operating state of the disconnect mechanism at any time. Thus, the driver is able to recognize the operating state of the disconnect mechanism at any time, so the driver is able to carry out driving based on the operating state.

Control system for four-wheel drive vehicle

A disconnect mechanism is configured to disconnect a predetermined rotating element from an engine and an auxiliary drive wheels while the vehicle is traveling in a two-wheel drive mode. The predetermined rotating element is configured to transmit power to the auxiliary drive wheels while the vehicle is traveling in a four-wheel drive mode. An electronic control unit is configured to: execute shift control when a shift condition of an automatic transmission is satisfied; selectively engage or release the disconnect mechanism based on a traveling state of the vehicle and a driver's predetermined operation; and control at least one of the automatic transmission or the disconnect mechanism such that a shift period based on the shift condition of the automatic transmission and an engagement-release period of the disconnect mechanism at least partially overlap with each other.

Growing community of inventors

Toyota, Japan

Yoshiro Obayashi