What is the fundamental difference between a hydrostatic transmission and a hydrokinetic transmission?

The fundamental difference between a hydrostatic transmission and a hydrokinetic transmission lies in how they transmit power from the engine to the wheels or driven components: hydrostatic transmissions use fluid pressure and displacement, while hydrokinetic transmissions use fluid velocity and kinetic energy. A hydrostatic transmission consists of a hydraulic pump and a hydraulic motor. The pump, driven by the engine, converts mechanical energy into hydraulic energy by displacing fluid under pressure. This pressurized fluid is then directed to the hydraulic motor, which converts the hydraulic energy back i....