Hybrid working vehicle

摘要

A hybrid working vehicle comprises an engine, a drive wheel, a power take-off (PTO) shaft, and a power transmission system for transmitting power from the engine to the drive wheel and the PTO shaft. The power transmission system is bifurcated at a bifurcating point into a traveling drive train for driving the drive wheel and a PTO drive train for driving the PTO shaft. A continuously variable transmission is provided on the traveling drive train, and a motor generator is provided on the power transmission system between the engine and the bifurcating point. The motor generator functions as a generator by power of the engine and functions as an electric motor for driving the power transmission system. The hybrid working vehicle includes a controller for controlling an output rotary speed of the motor generator functioning as the electric motor.

主权项

1. A hybrid working vehicle, comprising:
an engine; a drive wheel; a power take-off (PTO) shaft; a power transmission system for transmitting power from the engine to the drive wheel and the PTO shaft, the power transmission system being bifurcated at a bifurcating point into a traveling drive train for driving the drive wheel and a PTO drive train for driving the PTO shaft; a continuously variable transmission provided on the traveling drive train; a motor generator provided on the power transmission system between the engine and the bifurcating point, wherein the motor generator functions as a generator driven by the engine to charge electric power in a battery or functions as an electric motor supplied with electric power from the battery to drive the power transmission system; and a controller for controlling an output rotary speed of the motor generator functioning as the electric motor, wherein the engine and the motor generator are assembled as a power unit having an output therefrom to the bifurcating point, and wherein the output of the power unit is one selected among an output power of only the engine, an output power of only the motor generator functioning as the electric motor, and a combined output power of the engine and the motor generator functioning as the electric motor.