Experimental study of the effects of multi-electrode spark plugs to improve engine performance and reduce pollutants of the XU7JP/L3 engine

In this study, the effects of using multi-electrode spark plugs on the performance parameters of an internal combustion engine were investigated using experimental tests. In this regard, experimental tests have been carried out using two types of lead-free gasoline, as well as a combination of gasoline with commercial additive (Keropur-G). The results of experimental tests show that with the use of multi-electrode spark plugs in conventional fuel and fuel with additive, the braking torque and braking power are increased and in comparison the specific fuel consumption (SFC) is decreased. Also the use of multi-electrode spark plugs increases the emission of nitrogen oxides and reduces the emissions of unburnt hydrocarbons, carbon monoxide and carbon dioxide from the engine.