Effective of Fan Belt and Water Radiator in Diesel Engine Temperature

Diesel engines are one of the most application agricultural machines. Because of their applications in water pump and generator the user does not need to attend, their protecting is very important and it is one of the agricultural worries especially in remote areas. In this paper the effect of water radiator and fan belt relation of diesel engine temperature with is studied. In the normal condition the fan belt and radiator control the engine temperature. So the temperature increase and then remain constant. If, by any reason, the fan belt snapped or radiator becomes holed, the engine temperature will increase. By introducing a critical temperature an electro-mechanical system is designed to protect diesel engine. An electronic circuit is designed that by taking the machine electricity gives two constant voltages. One of these voltages is used for electro-valve and another is for electronic devices. This circuit will switch the diesel engine off if the engine temperature raises the critical temperature.