Comparative Study of Estimatives and Experimental Published Results of Spark Ignition Engine Performance using Different Fuels.

Spark ignition direct injection (SIDI) engines may bring a major improvement in SI engines because of their potential reduction in fuel consumption. However, for compliance with stringent emissions standards while performing at highefficiency levels, this engine requires further development, including advanced exhaust treatment and low sulfur fuel compatible with its operating characteristics.Other improvements to thermal efficiency for these engines result from the exhaust gases having a composition much closer to that of air and a lower temperature (which reduces heat loss) and the induction of excess air reduces pumping losses.In this last case, it is important to mention that Ostrikov et al., 2018 [1] developed a technological process and a flushing composition flushing oil for cleaning lubricating system of tractor diesel engines. Also, Buratsev et al, 2018 [2] working with turbulent combustion of natural gas have observed that the increasinge in the calorific intensity of the combustion chamber of one reactor as a result of a decrease in its volume leads to full conversion of the starting reagents and to lower carbon-black formation, then this remark ought to be applied to the combustion chambre of the engines.