Yamada Manufacturing Co., Ltd.

Honda Motor Co., Ltd.

Keihin Corporation

Ken Kaneko

Takahiro Sato

Naoki Oikawa

Kenichi Fujiki

Yasunori Ono

Toru Kobayashi

Masahiro Kasahara

Kazuo Enzaka

Yoshiaki Senga

Takahiro Satou

Yuji Senbongi

Syu Murayama

Kentaro Yamanaka

Yuhki Jyo

Haruyo Kobayashi

Yoshiharu Segawa

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

It is an object of the present invention to provide a trochoid type oil pump in which erosion of the rotor surfaces caused by cavitation is minimized, vibration and noise are reduced, and the structure is greatly simplified. The trochoid type oil pump of the present invention comprises a rotor chamber which has an intake port and a discharge port, an outer rotor, an inner rotor, and shallow grooves which are formed on the side of the initial end portion of the discharge port on the circular circumference of the track of the positions of the bottom portions of the teeth created by the rotation of the outer rotor. In a state in which the sealed spaces formed by the outer rotor, the inner rotor and a partition part between the final end portion of the intake port and the initial end portion of the discharge port are reduced in volume from the maximum volume, the sealed spaces Sa are caused to communicate with the shallow grooves.

Trochoid type oil pump

Growing community of inventors

Kiryu, Japan

Ken Kaneko