Fuel injection

The function of a fuel injector in an internal combustion engine is to introduce of fuel into the cylinders by means of a pump rather than by the suction created by the movement of the pistons. The fuel injector comprises of a nozzle and a valve. Unlike carburetors which rely on the vacuum created by intake air rushing through it to add the fuel to the air-stream, the fuel injection atomises the fuel by forcibly pumping it through a small nozzle under high pressure. The reputed MOTORI of IML group of Italy is a leading distributor of top companies like DEUTZ which manufactures fuel injection system in a wide variety as per the accepted industry standard.

Diesel engine fuel injectors often operate at injection pressures of 25 MPa or higher. The amount of fuel delivered is controlled by the length of time the injector is kept open. The key factors in judging performance of fuel injectors are the control of liquid fuel delivery and characteristics of the fuel spray obtained. The injector on a diesel engine should withstand the temperature and pressure inside the cylinder delivering the fuel in a fine mist. Some diesel engines employ special induction valves, pre-combustion chambers or other devices to swirl the air in the combustion chamber or otherwise improve the ignition and combustion process.

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