Study of performance and emission analysis of a 4 stroke single cylinder SI engine fuelled by petrol mix with plastic oil

Because of the environmental pollution and common use for gasoline fuel in our country Iraq, the wide used for cars in the transport sector and the increasing number of cars day after day, it is important to search for alternative fuel to operation the internal combustion engines. In this work, the practical results have been obtained through the experiments to evaluate the use of Gasoline and plastic oil extracted from waste plastic in spark ignition engine. The research aims to study the effect of using the plastic oil in spark ignition engines without any modification of the engine. In this study, the test was conducted on a single - cylinder, 4-stroke SI engine runs at a constant speed, by using of gasoline and mixed with the plastic oil proportions (10%, 20%, 30%, 40%, and 50%) by volume. The brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), and exhaust gas emissions such as: carbon monoxide (CO), carbon dioxide (CO2), and unburned hydrocarbons (HC) are measured. As well as the differences in the engine performance have been found which works by a gasoline mix with plastic oil, this provides better performance of the engine while that a calorific value for the plastic oil is the highest. Hence the experimental results have shown that a 50% proportion of plastic oil blended with gasoline can be the alternative fuel for the operation of spark ignition engine without any modifications