Toyota Jidosha Kabushiki Kaisha

Masahide Ishikawa

Keiichi Uno

Kunihiko Hayashi

Hideo Kobayashi

Yoshihiro Saeki

Manabu Orihashi

Masaki Morita

Keiko Tanaka

Akihito Hosoi

Takayuki Kumamoto

Satoru Shiga

Yuki Miyamoto

Kaname Uzuki

Atsushi Morita

Miyuki Matsuda

Hiroki Nishimura

In a control devicefor a clutch unitfor transmitting rotation of a crankshaftof an engineto a water pumpfor circulating cooling water within the engine, it is determined that whether engagement or disengagement of the clutch unitwhen a request to start the engineis made, and the clutch unitis caused to be in an engagement state based on a determination result before cranking of the enginestarts.

Control device for internal combustion engine

When there is an extremely low ambient temperature, an electronic control unit controls operation of a circulation path for coolant water in such a manner that, after starting of an engine, the coolant water is supplied from the engine first to a throttle valve and an EGR valve and then to an oil warmer for a transmission. This solves a failure problem in the throttle valve and the EGR valve caused by frost formation at an early stage. As a result, desired operating performance of the vehicle is quickly ensured and heat management in the vehicle is carried out in a desired manner when there is an extremely low ambient temperature.

Vehicle heat management device

Growing community of inventors

Okazaki, Japan

Masahide Ishikawa