Load Response of a CI Engine Fuelled with BioDiesel Blends with Selected Additives

Transport sector uses a large chunk of petroleum product such as diesel. Biodiesel is an alternative fuel burnt in diesel engine after blending with diesel so that dependency on petroleum remains under check. Here a stationary diesel engine is run on biodiesel blend along with fuel additive to establish its effectiveness in CI engine. Efficiency and consumption remains competitive to commercial diesel and emission of harmful gases are lesser than the diesel. This work judges the suitability of additive to mix biodiesel with diesel. Diethyl ether and Titanium dioxide are added as additive to 10%, 15% blend of Soyabean oil biodiesel and 15 and 20% blend of coconut oil biodiesel. Cetane number obtained is in the range of 49–51 which is anytime higher than diesel (41–48). Thus the biodiesel blends emit 10–20 PPM hydrocarbon (HC), ~ 400 PPM oxide of nitrogen (NOx) at full load whereas diesel emits ~ 30 PPM HC, 570 PPM NOx at similar condition. With additive or biodiesel mixing the full load efficiency is dropping merely ~ 4% at full load whereas the part load efficiency remains almost similar to diesel.