Computer Simulation Of Spark Ignition Engine Cycle Process And Performance Analysis

Abstract

The main objectives of this paper is to do computer simulation of spark ignition engines cycle process, performance analysis and introduces the preliminary simulation regarding four stroke spark ignition engine. Improving the performance about inside combustion apparatus is certain of the principal worries concerning researchers. Experimental studies are more expensive than computational techniques these allows us to obtain all the required data for the cylinder, which could not be measured.An arbitrary heat release formula was used to predict the cylinder pressure, which was used to find the indicated work done. The heat transfer of the cylinder, friction and pumping losses also were taken into account to predict the brake mean effective pressure, brake thermal efficiency and brake specific fuel consumption. Most on the parameters as executing have an effect on the overall performance over four stroke spark ignition engines, such as pressure, temperature and volume variation with crank angle theta. In addition to these the effect of engine brake power (Pb), engine torque (Tb), specific fuel consumption (bsfc) and engine kinematics to these engine performance is also studied. The use of a real combustion curves has a profound influence of the similarity in the pressure–volume profile to that sees for the real engine. To complete the research different methodology was used for collecting data from literature review and other document, C++ programing is developed, thermodynamics and performance analysis is done for these RE Bajaj engine model and finally simulation is done by the help of programing and Microsoft excel. In this computer program was tried to determine engine performance, engine capacity and engine kinematics of the selected engine. From the results were tried to study and demonstrate real PV diagrams and variation of different thermodynamic properties as much as possible. And finally comparisons of these results to experimental test outcomes were done. Generally it can conclude that computer simulation of the above variables leads to the good results than theoretical ones.