Experimental Investigation of Diesel Engine Emissions Fueled with Binary and Ternary Blends of Diesel, Biodiesel, and Ethanol

Renewable fuels are a potential substitute for high pollutant fuels attained from conventional sources. Due to the complexity of the combustion process inside the engine, the use of renewable fuels can have a disadvantageous effect on the other emissions of the engine. Most of the researchers have focused on the use of renewable fuel in the internal combustion engine to study their effect on the engine emission but these studies are based on steady-state test and these tests can never correlate with the emission generated by the vehicle in a real-world scenario. The study has been performed to observe the effect of the use of biodiesel, ethanol and diesel blend while running the compression ignition engine in transient condition. Carbon monoxide CO, carbon dioxide CO2, and oxides of nitrogen NOx were analyzed on a 2.289L diesel engine. The results showed that the use of ethanol in a fraction of 15% produce less amount of CO2, and NOx but a higher amount of CO in the exhaust. Use of biodiesel slightly decreases the CO emission in the exhaust while being operated at low and medium speed condition. While NOx and CO2 emission increases due to the higher oxygen content in the biodiesel as well as due to a higher temperature in the exhaust. The study has also observed that ternary blends have helped in emission reduction while running the engine in transient condition.