Toyota Jidosha Kabushiki Kaisha

Hiroyuki Kanemoto

Naohide Fuwa

Tokiji Ito

Seiko Tamada

An internal combustion engine includes a valve timing change mechanism that changes the phase of an intake cam, and a lift amount change mechanism that changes lift amount by causing displacement of a control shaft. An electronic control unit performs a coordinated control in which the lift amount change mechanism is operated such that the position of the control shaft that is detected by a position detection sensor becomes the target position, and the valve timing change mechanism is operated according to a control state of the lift amount change mechanism. When a discrepancy between the actual position of the control shaft and the detected position thereof is estimated to be large, coordinated control is forbidden and the valve timing change mechanism is operated based on engine load.

Growing community of inventors

Fujinomiya, Japan

Hiroyuki Kanemoto