Hydraulic Radiator Fan Motor

Think of the radiator s fins and looped coils as a heat exchanger that emanates heat from the engine and the fan helps enhance that process especially when the vehicle is stopped and there s no air flow from movement. Radiator by as much as 10 15 compared to a hydraulic fan drive system where the fan motor fan and radiator are attached to each other. The simplest and least expensive hydraulic fan drive uses a fixeddisplacement pump driving a fixed displacement motor with a pressure control valve to regulate motor torque fan speed.