The invention provides an HEV (
Hybrid Electric Vehicle) driving
system based on CVT (
Continuously Variable Transmission). The HEV driving
system based on the CVT comprises a
combustion engine, a dual-
mass flywheel, a planetary gear mechanism, a forward gear
clutch, a back gear
brake, a driving motor, a
motor controller, a battery, a CVT mechanism, a speed
reducer mechanism and a differential mechanism
assembly, wherein the CVT mechanism comprises a driving belt wheel, a driven belt wheel, a
metal belt and an electric
oil pump, and a
hybrid power dedicated continuously-variable unit is formed by integrating the CVT mechanism with the driving motor, the planetary gear mechanism, the forward gear
clutch, the back gear
brake, the speed
reducer mechanism and the differential mechanism
assembly; a hydraulic
torque converter is removed by the CVT mechanism, the power of the
combustion engine can be transmitted to the CVT mechanism through the dual-
mass flywheel; and the driving motor is integrally arranged on the driving belt wheel, and the pressure of a hydraulic
system is supplied by adopting the electric
oil pump. According to the HEV driving system based on the CVT, provided by the invention, the energy-saving key technologies of an HEV such as
low speed electric vehicle,
idle speed removing, reduction of engine
discharge capacity, motor assistance, steady-state operation of an engine and
recovery of
brake energy can be better realized.