Honda Motor Co., Ltd.

Joko Karasawa

Makoto Kobayashi

Tatsuya Ishikawa

Yuji Koga

Yuji Kubota

Shin Fukasawa

Hisayuki Asada

Tatsuya Igarashi

To a side surface of the rotor on a pump side is formed with a tubular unit which extends towards the pump side, and an oil reservoir unit which accumulates a lubricating oil discharged from the pump is provided to an inner peripheral surface of the tubular unit. To the oil reservoir unit, a communicating hole which communicates the oil reservoir unit and a side surface of the rotor on a planetary gear mechanism side, is formed. The lubricating oil flowing from the oil reservoir unit via the communicating hole is guided to a carrier of the planetary gear mechanism.

Lubricating structure of transmission

A vehicle automatic transmission includes a plurality of gears provided on an input shaft, a countershaft, and an output shaft and are meshed with one another. A plurality of hydraulic clutches are each configured to couple any of the gears to the input shaft, the countershaft, or the output shaft to establish a predetermined shift stage. An engagement unit is configured to couple a reverse gear to the input shaft or the countershaft to establish a reverse shift stage. A shift-position detection unit is configured to detect a shift position. A vehicle-speed detection unit is configured to detect a vehicle speed. A control unit is configured to detect, based on an output of the shift-position detection unit, a first time and a second time. The control unit is configured to delay a timing when the engagement unit operates after the shift position changes to an R-position.

Vehicle automatic transmission

Growing community of inventors

Saitama, Japan

Joko Karasawa