Honda Giken Kogyo Kabushiki Kaisha

Junji Urano

Yoichi Sato

Shigeji Nakano

Takashi Aoki

Hisashi Kunii

Keiichi Hanyu

Katsuyuki Narai

Akihiro Yamaguchi

Kaoru Kajikawa

Hideo Nirasawa

A hydraulic controller comprises a structure composed of a separator plate sandwiched between first and second valve bodies and , in which structure, an oil passage connecting a SC shift valve provided upstream and a SC backup valve provided downstream is provided with a choke When the separator plate in which a choke opening is formed, is sandwiched between the first and second valve bodies, the upstream part of the oil passage is in fluid communication with one end of the choke opening while the downstream part of the oil passage is in fluid communication with the other end of the choke opening . In this arrangement, a long narrow room formed by the choke opening sandwiched between the first and second valve bodies comprises the choke

Hydraulic controller

An apparatus for controlling a power transmission device, having a lockup shift valve that changes the operating state and non-operating state of the lockup mechanism, and a regulator valve that is capable of changing the pressure (line pressure) of working oil used to operate a speed changer CVT between a low pressure and a high pressure, wherein changeover between a mode, where the lockup mechanism is operated and the line pressure is set to a low pressure, and a mode, where the lockup mechanism is not operated and the line pressure is set to a high pressure, is carried out by changing the output of ON and OFF signals from the first solenoid valve.

Apparatus for controlling a power transmission device

A first side-pressure, that is supplied to cylinder of the drive pulley or to cylinder of the driven pulley as pressure determining the transmission torque capacity of continuously variable transmission mechanism , is supplied to a frictional engagement element, where it is used as the working hydraulic fluid pressure. The transmission torque capacity of the frictional engagement element is set to be somewhat lower than the transmission torque capacity of the continuously variable transmission mechanism.

Belt-type continuously variable transmission

A control apparatus for a belt-type continuously variable transmission that has a drive pulley, a driven pulley, a V-belt trained around the drive and driven pulleys, a drive cylinder for varying the pulley width of the drive pulley, and a driven cylinder for varying the pulley width the said driven pulley. A pressure regulator valve produces pulley control pressures supplied to the drive and driven cylinders and a shift valve distributes the pulley control pressures to the drive and driven cylinders for varying the widths of the drive and driven pulleys for speed ratio control. An electric shift control normally controls the shift valve by electric power supplied to solenoid valves but the electric shift control causes the pressures in both the drive cylinder and said driven cylinder to be equal when the electric power is lost.

Growing community of inventors

Wako, Japan

Junji Urano