Injection modeling of Diesel Engine: A Review

Diesel Engine is the most important part of our life. Our transportation, agricultural, defense, science fields are based on the diesel engine. With the increase the use of diesel engines our life many problems are raising. Pollution is major problem so it is necessary to engine manufacturer to invent new technology that how to increase efficiency, decrease fuel consumption rate, Increase work done and decrease exhaust emission. To improve these problems injection timing is the most important parameter. Injection Timing is the crank angle at which the fuel is injected in the combustion chamber. The advances of this angle there is a impact on the performance of the diesel engine. Delay Period increases with increase in injection advance angle. The reason for increase in delay period with increase in injection advance angle is that pressures and temperature are lower when injection begins. When injection advance angles are small, delay period reduces and operation of engine is smoother but power is reduced because large amount of fuel burns during expansions.