Aisin Aw Co., Ltd.

Nachi - Fujikoshi Corporation

Shuichi Takeda

Masahiro Ito

Masamichi Yamaguchi

Hiroyuki Kutsubo

Haruki Shirasaka

Yuji Iwatsuru

Katsutoshi Komatsu

Takuji Akiyama

Masayoshi Kato

Noriyuki Tani

Kazuhiro Yoshii

Yukihiro Noda

Makoto Miyatake

Masayuki Hara

Syunji Miyanishi

An electromagnetic valve for a transmission-use oil pressure control device including an oil pump that supplies oil pressure to a transmission, and an accumulator that accumulates an oil pressure generated by the oil pump. The electromagnetic valve includes: an electromagnetic valve main body connected to the accumulator and includes an oil path opening/closing valve element opening/closing an oil path between the accumulator and the transmission; a seal member disposed in the electromagnetic valve main body sealing against oil leakage from a sliding portion of the oil path opening/closing valve element in the opening/closing operation of the oil path opening/closing valve element; and a pressure regulation mechanism disposed in the electromagnetic valve main body regulating to release an internal pressure in the accumulator when an accumulator-side oil pressure in the electromagnetic valve main body rises to a predetermined pressure or more.

Electromagnetic valve and transmission-use fuel pressure control device using electromagnetic valve

A vehicle drive apparatus for supplying oil pressure to a hydraulic servo at restart of an engine. The vehicle drive apparatus includes an accumulator that accumulates the oil pressure, an electromagnetic switching valve that retains oil pressure of the accumulator when an oil pump is stopped, a switching valve control unit that controls opening and closing of the electromagnetic switching valve, and a restart determining unit that determines whether or not to restart the vehicle drive source from a stopped state. When it is determined by the restart determining unit to restart the vehicle drive source, the switching valve control unit is started so as to supply the oil pressure accumulated in the accumulator to the hydraulic servo. As a result, engine friction engagement elements are quickly engaged to enable starting of a vehicle.

Vehicle drive apparatus

Growing community of inventors

Anjo, Japan

Shuichi Takeda