Energy balance on a three-cylinder engine with turbocharger

In this paper, Energy balance for a three-cylinder engine with turbocharger has been analyzed. Energy balance is a method based on the first law of thermodynamics on account of which a control volume would be chosen over the engine and the inlet and outlet energies on that control volume would be measured and calculated. Using this method, the distribution of different types of energy in the engine can be obtained. In the experiment done on the engine, net output power, exhaust energy, energy transmitted to the coolant and other types of energy including heat transfer by means of convection and radiation from the engine’s body, have been calculated in different situations such as different RPMs and different cooling temperatures. The results of this experiment show that the maximum thermal efficiency in different operating conditions is 35.95%, at 3000 rpm and 15 bar. Also, the maximum percentage for the smoke output is 35.75%, and is at 4500 rpm and 20 bar. For the energy transferred to the cooling fluid, the highest value is 43.27%, which is obtained at 4000 rpm and 1 bar.