Honda Giken Kogyo Kabushiki Kaisha

Yukihiko Fukushima

Takashi Hasegawa

Atsushi Fujikawa

Shuichi Fujimoto

Akihira Aoki

Makoto Sumi

Katsuyuki Narai

Shuji Ichijo

Mitsuro Ohtaki

A hydraulic controller comprises a first hydraulic control valve , which is mounted on an end face S of a first housing unit H , an oil pump , which is mounted on the first hydraulic control valve , and an input shaft of a transmission, which shaft is provided rotatably in a transmission housing. The oil pump comprises an outer rotor and an inner rotor in a pump casing and , which is mounted on the valve body of the first hydraulic control valve . The input shaft , which is inserted into the pump casing and fit into the inner rotor , rotates and drives the inner rotor. The oil pump sucks oil from the bottom of the transmission housing and supplies it through the mounted part into the first hydraulic control valve

Hydraulic controller for transmission

After the engine rotational speed Ne has become below a reference rotaional speed Neo, which is lower than an idling rotational speed of the engine, and after the pressure PL of oil passages and has begun to decrease, for a predetermined time, the currents supplied to electromagnetic valves and are adjusted to generate, in each electromagnetic valve, a second biasing force electromagnetically in a magnitude that can supplement a decrease in a third biasing force which is generated by the back pressure led through an oil passage and , respectively, and which decreases as the pressure of the oil passages and decreases. After the above metioned predetermined time has elapsed, the currents supplied to the eletromagnetic valves and are set almost to zero.

Vehicular transmission control system

Growing community of inventors

Wako, Japan

Yukihiko Fukushima