Effect of Antioxidant on the Performance and Emission Characteristics of a Diesel Engine Fueled with Biodiesel Blend

This paper deals with the impact of antioxidant on the performance and emission characteristics of a diesel engine fueled with biodiesel blend. In this paper, 20% of Calophyllum inophyllum biodiesel (CIB20) was used as biodiesel feedstock. The antioxidant Butylated Hydroxy Toluene (BHT) is used at 500ppm, 1000ppm and 1500ppm concentration with CIB20. The exhaust emission and performance of a single cylinder diesel engine were analysed and compared to those of biodiesel blend (CIB20) with different concentration and diesel. The results show that there is no significant negative impact on biodiesel physiochemical properties. While adding antioxidant, it increases the brake thermal efficiency and reduces specific fuel consumption compared to biodiesel blend (CIB20). The effect of antioxidant also reduces the CO and NOx emission compared to the biodiesel blend (CIB20).