the car engine is one of the most important in a car, it's temperature for the fuel consumption of a car also has a decisive influence. Not to say that high temperature will fuel, in fact, temperature is too low will lead to higher fuel consumption. When the car engine work need to have the normal temperature of the environment (80 ~ 90), the temperature sensor is particularly important in the engine.

If the temperature is too high, the engine cooling system can automatically change the cooling water circulation, increase the heat dissipation, take away the excess heat; On the other hand, reduce the circulation cooling water to maintain the necessary temperature.

To realize automatic cycle changes are the main components of the engine temperature sensor changeorganisationsor section, temperature regulator valve and fan. Cold machine starts, magnetic fan in stop state, the section temperature valve in the closed state, the engine coolant in the engine water jacket only minor cycle, not easy heat dissipation, at the same time computer affected by temperature sensor temperature index, will increase fuel injection, increasing the idle valve opening instructions, increase the engine speed, is conducive to make engine heat rapidly; After normal temperature, fuel injection quantity and the idle valve opening has returned to normal. When the temperature exceeds 80 ~ 90 degrees (the car is a bit different), the section temperature valve is opened, the inside of the engine water jacket coolant do systemic circulation through the section temperature valve flow through the radiator radiator, air flow produced by vehicle traffic, take away a lot of heat, maintain normal temperature of the coolant.

If the speed is slow or even stop but not shut down, no air flow to help heat dissipation, hair Watson Wchangeorganisation motivation will soon heat up, then the temperature sensor issue instructions to let the magnetic help radiator cooling fan to start.