Thermodynamic model to calculate the performance parameters for 4.248G diesel engines at the maximum load

In this research work, one of the Most widely used agriculture diesel engine with 4.248G scientific name which can be placed on ITM 285 tractor was analyzed experimentally and analytically. In this survey, to optimize the power and performance parameters of the engine, the finite time thermodynamics was used. In this analysis, non-linear relationship between the specific heat of the working fluid and their corresponding temperatures, corresponding frictional dissipation with the average speed of the piston, irreversibility of the compression efficiency and expansion engine at full load position are considered. The relations between engine speed and engine performance parameters with the help of numerical methods using MATLAB software were analyzed and compared with experimental data of diesel 4.248G engine. According to the results obtained in this study, minimum specific fuel consumption in two modes of model and laboratory in1800 rpm speed was gained that the amount of which are respectively equal to 272.35 and 266.11 gKw-1h-1. The results obtained in this study can be used to improve 4.248G diesel engine performance parameters.