Effects of Port Fuel Injection of Calophyllum Inophyllum Biodiesel on the Performance and Emission Characteristics of a DI Diesel Engine

Depletion of worldwide petroleum reserves, stringent emission norms and continuous rising of fuel prices lead to research on substitute fuels on diesel engine. Using different alternative fuels like biodiesel, biogas, and more are tested in the diesel engine with normal and advanced combustion techniques. By using the transesterification process the Calophyllum inophyllum raw oil is transformed into useful Calophyllum inophyllum biodiesel. The converted biodiesel is tested to know the physiochemical properties. The experimental work was carried on a single cylinder diesel engine. The secondary Calophyllum inophyllum methyl ester is injected along filter (suction) air with different ratios (10, 20 and 30% by vol. basis) using electronic injector. The primary diesel fuel is directly injected into the cylinder at the end of compression stroke. The brake thermal efficiency is escalated by 2.01%, oxides of nitrogen are reduced by 28%, brake specific fuel consumption, carbon monoxide and unburned hydrocarbons are enhanced in the B20% fuel compared to diesel fuel.