Kanzaki Kokyukoki Mfg. Co., Ltd.

Fumiaki Ito

Tasuku Inoue

Yoshitaka Kochidomari

Masato Arata

Hiroshi Sugimoto

Takashi Nishizawa

Koji Kiyooka

Hiroaki Hashima

Hongkun Wang

Kohei Ogura

Koga Yamane

Takumi Takahashi

The problem is in providing a transmission structure which includes low gear and high gear transmission mechanisms and an HST and can improve the vehicle speed responsiveness at the time of switching between a low gear transmission state and a high gear transmission state. Solution: At the time of switching between low gear and high gear transmission states, the present invention creates an idling state in which the power transmission state from a drive source to a drive wheel is cut off, and calculates an excess vehicle speed HST gear ratio by adding an excess correction value, which is for changing the vehicle speed at the switching completion point in time in excess of the actual vehicle speed by a predetermined speed, to an actual vehicle speed ratio, which represents an HST gear ratio that causes the vehicle speed at the switching completion point in time to match the actual vehicle speed attained immediately before the completion of the switching, so as to operate an HST actuator using the excess vehicle speed HST gear ratio as a control target value during the idling state.

Transmission structure

A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.

Hybrid vehicle

An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.

Axle driving apparatus for hybrid utility vehicle

A transaxle may include a motor, an input shaft, first and second output shafts, and first and second clutches. The input shaft has first and second ends. The first end of the input shaft is structured to receive an engine power from an engine. The second end of the input shaft is structured to receive motor power from the motor. The first output shaft is driven by power outputted from the input shaft. The second output shaft is driven by the motor power. The second output shaft is extended coaxially to the input shaft. The first clutch is interposed between the motor and the input shaft. The second clutch is interposed between the motor and the second output shaft. The first clutch and the second clutch are coaxially disposed between the second end of the input shaft and an axial end of the second output shaft.

Transaxle and motor unit for hybrid vehicle

Growing community of inventors

Amagasaki, Japan

Fumiaki Ito