Factors that affect vehicle fuel consumption there are many, "220V AC Cooling Fan", transmission, tires and air resistance, etc. are a reasonable match to run through optimal matching can effectively achieve lower fuel consumption, which is a key factor affecting fuel consumption of the engine, and how to improve the thermal efficiency of the engine, the engine cooling fan speed control is even more important, an effective effort "220V AC Cooling Fan" can be good to reduce engine power loss and improve fuel economy. Unlike traditional electric silicone fan bimetallic temperature control mode, the technical principles of electronic control type silicone clutch control signal lines. A temperature sensor installed in the "220V AC Cooling Fan" directly feel the temperature of the coolant, and transmits to the engine control unit ECU, after the ECU is determined by the logic module to issue corresponding pulse signal, the pulse signal controls the solenoid valve to the electronic clutch inner silicone driving of the clutch inner of the clutch valve is opened or closed.