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1. Introduction Because of the financial growth, the energy demand of the global globe increase every year. In the energy conversion process in power plants and small engines, energy efficiency is an integral factor. The tools with higher effectiveness, the more work result. Therefore, a true quantity of researches studied on thermodynamics of efficiency, exergy and irreversibility in both spark-ignition and compression-ignition motors were found over the last century. The thermal efficiency and the energy loss in the operational system are usually calculated from the very first law of thermodynamics, while the maximum function exergy or result is characterized by the next law of thermodynamics. The exergy of something from the next law is thought as the utmost useful mechanical are could be produced as the machine is taken to thermal mechanical and chemical equilibrium using its environment through reversible processes . Unlike energy, exergy isn't a conserved quantity and may be destroyed through the process because of irreversibility. Giakoumis and rakopoulos , Caton J.A. , Som and Datta  studie...