Comparative Analysis of Experimental and Simulated Performance and Emissions of Compression Ignition Engine Using Biodiesel Blends

The physicochemical properties of different biodiesel feedstock from past literature were reviewed, and their mean and standard deviation values calculated. The performance of biodiesel from cotton, jatropha and neem in a stationary multi-cylinder Compression Ignition engine at full load with variable speeds of 1000, 1500, 2000 and 2500 rpm were investigated and the composition of their exhaust gas emissions were recorded and analyzed. A model was developed for the same compression ignition engine with the test rig’s specifications using the GT-Power modeling software. The properties of cotton, jatropha and neem obtained from the experimental works were used to validate the modeled engine during simulation, while the performance of biodiesels from the secondary data sources was further simulated under same conditions. The engine performance simulation in GT-Power confirmed that the software is valid to be used in compression ignition engine simulation with biodiesel from any feedstock and at all speeds because both experimented and simulated results are very close with identical peaks. Pure biodiesel samples produced the lower CO, NOx, CO2 and SO2 emissions than diesel.