• D.Maheswar reddy
• Dr.K.Prahlada rao

Biodiesel poses a very promising scenario of using diesel fuel as an alternative fuel. These features can be correlated positively with the diesel engine-specific inner combustion engine fuels. Alcohol is considered to be a suitable fuel substitution for diesel engines because it allows the diesel fuel to burn completely due to the presence of more oxygen which improves engine characteristics. The present investigation is to evaluate the performance and emission characteristics of different features of dual biodiesel mixing together with each blend having n-butanol as an additive.The experiment uses a unique cylinder, four stroke, constant speed, water-cooled, direct injection VCR diesel engine. In the case of biodiesel fuel without EGR, experimental results showed better oxides of nitrogen emissions. NOx emissions were lowered when the engine was operated with EGR. The EGR level was optimized as 20% based on a considerable reduction in NOx emissions, minimum smoke, CO, HC emissions and similar brake Thermal efficiency. Among all the blends D80-B20 Blend has shown increased engine performance and emission control, D80-B20 is given as the optimum blend and EGR with 10 and 20 percent is used to lower emissions. Thermal efficiency, Between all the blends D80-B20 Blend has shown better performance in terms of engine performance and emission control,D80-B20 is taken as the optimum blend and EGR with 10% and 20% is used to reduce emissions.

Dual biodiesel, Castor oil, Rubber seed oil, n-butanol,Exhaust Gas Recirculation(EGR), alternative fuels, Diesel engine, performance and emissions.

"Experimental Investigation on mixing of two Biodiesels and Additive blended with Diesel as Alternative Fuel for single cylinder Diesel Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.31-42, June 2019, Available :http://www.jetir.org/papers/JETIR1906L07.pdf

"Experimental Investigation on mixing of two Biodiesels and Additive blended with Diesel as Alternative Fuel for single cylinder Diesel Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp31-42, June 2019, Available at : http://www.jetir.org/papers/JETIR1906L07.pdf