The invention relates to a fuel-electric
hybrid four-wheel
tractor and belongs to agricultural power machinery. A
transfer case is assembled outside a rear-axle driving gearbox of a fuel power four-wheel
tractor, a motor and a hydraulic
fuel pump are mounted on the fuel power four-wheel
tractor and on two opposite sides of the
transfer case respectively, a
motor shaft of the motor is connected with one end of a reversing power shaft, a power input shaft of the hydraulic
fuel pump is connected with the other end of the reversing power shaft through a
transmission system, a storage battery and a
hydraulic motor are assembled on the fuel power four-wheel tractor, two ends of a hydraulic fuel
pipe are respectively connected on the hydraulic
fuel pump and the
hydraulic motor, and the storage battery is respectively communicated with the motor and a generator of the fuel power four-wheel tractor through leads. Conversion and switching of two kinds of power sources for output power of the
agricultural tractor is realized, and the fuel-electric
hybrid four-wheel tractor has the advantages of simple structure, simplicity and convenience in conversion and operation, environment friendliness.