Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Akihiko Noborio

Yuji Hattori

Yoshinobu Soga

Takafumi Inagaki

Shuji Moriyama

Yusuke Ohgata

Kazumichi Tsukuda

A vane oil pump includes a rotor including a plurality of slits, a housing having an inner circumferential cam surface such that a first pump unit and a second pump unit taking in and discharging oil in accordance with rotation of the rotor are separately disposed in a rotational direction of the rotor, a plurality of vanes respectively fitted in the slits of the rotor, and a pressure adjusting device configured to adjust a second discharge pressure of the second pump unit to a lower pressure than a first discharge pressure of the first pump unit. A back pressure groove is disposed on the housing and is provided to supply back pressure oil to a bottom portion of each slit.

Vane oil pump with different back pressure supplied to vanes

Growing community of inventors

Tokai, Japan

Akihiko Noborio