College of Science & Engineering
Continuously variable transmissions (CVT) are popular in the automotive industry since they can decouple the engine speed from the wheel speed, making the engine run more efficiently than with an automatic transmission. The hydraulic form of a CVT is a hydrostatic transmission. Due to its high power density, continuously variable ratio, and smooth operation, the hydrostatic transmission has been widely used as the drivetrain in off-road applications such as agricultural, construction, and forestry machinery.
It is difficult to visualize how a power split unit transfers power in a mechanical path and hydraulic power. To understand the internal operating characteristics of the vane pump power split unit (VPSU), these researchers are using a high-fidelity 3D CFD simulation model. The model is used to evaluate the mechanical efficiency of the VPSU at different output speeds and working pressures. The components of the power split unit will be optimized based on CFD results. The objective is to develop an efficient power split unit.