Study of compound differential gear train based on pump load hydraulic speed regulation

Based on the operating characteristics of pump load, the hydraulic speed regulation is widely used in the high-power pump load to realize the speed regulation and energy saving. This paper analyzes the energy saving features of the currently-adopted hydraulic speed regulation method in the high-power pump load and the inevitable power loss problems. According to the fundamental features of differential gear train, analyzes the feasibility and problems in speed regulation of pump load. The paper put forward a compound differential gear train and a speed regulating method which can availability reduce the inevitable power loss caused by adopting traditional full power hydraulic speed regulation device system. The application of compound differential gear train in the hydraulic speed regulation of pump load is a new attempt in the energy saving technology research field.