Yamada Manufacturing Co., Ltd.

Keihin Corporation

Yuji Senbongi

Takahiro Satou

Naoki Oikawa

Kenichi Fujiki

Toru Kobayashi

Ken Kaneko

Syu Murayama

Haruyo Kobayashi

Yuhki Jyo

Yoshiharu Segawa

Kentaro Yamanaka

A hydraulic control apparatus is provided including: an electromagnetic valve that has an input port communicating with a supply destination unit of oil and a control port that is switched between communication and disconnection by resultant force of a hydraulic pressure of the supply destination unit and electromagnetic force; a variable displacement pump which has a suction port communicating with a supply source of the oil, an ejection port communicating with the supply destination unit, and a control chamber communicating with the control port and rotates in accordance with drive of the supply destination unit, in which an amount of the oil ejected to the supply destination unit through the ejection port changes in accordance with a pressure in the control chamber; and a control unit that controls a value of a necessary current that is caused to flow through the electromagnetic valve.

Hydraulic control apparatus and hydraulic control method

A first main back pressure supply portand a first subsidiary back pressure supply portare formed in a first sliding contact surfaceof a first side member, the first main back pressure supply portis formed in a groove shape in the first sliding contact surface, and the first subsidiary back pressure supply portcommunicates with the first subsidiary discharge port. A second main back pressure supply portand a second subsidiary back pressure supply portare formed in a second side member, the second main back pressure supply portpasses through the second side member in the axial direction and the second subsidiary back pressure supply portis formed in a groove shape in a second sliding contact surface

Vane pump

Growing community of inventors

Kiryu, Japan

Yuji Senbongi