Experimental investigation of performance and emission characteristics of dual fuel engine (petrol start) fuelled with waste vegetable oil biodiesel - diesel blend

Abstract

The search for an alternate fuel has led to many findings due to which a wide variety of alternative fuels are available at our disposal now. The existing studies have divulged the use of biodiesel for engines as an alternative for diesel fuel. This paper deals with performance and emission characteristic of a single cylinder, naturally aspirated, four-stroke, and direct injection, water cooled petrol run/diesel run engine fuelled with diesel, Waste vegetable oil(Rape seed oil) with iso-butanol added additives and its different blends. In the present research three different blends were prepared in ASTM standards as B20 (Diesel 20%- Biodiesel 80%), B30 (Diesel 300%-Biodiesel 70%) and B50 (Diesel 50%-Biodiesel 50%). B20 shows the highest Brake power (BP) at full speed condition as compared to other blended fuel and diesel pursues the highest power at all speed condition. B20 shows are 1.66% greater Brake specific fuel consumption (BSFC) than diesel and 11.66 % lower than other blends. The decrease in the exhaust gas temperature for B50 was 7.02% lower than diesel at full load condition. B50 shows the lower CO emission as compared to other fuels. It shows 33.33% reduction as compared to diesel. B20 is showing 1.25% higher CO2 emission at full load condition where as it is 6.9% and 11.11% lower than B30 and B50 respectively. B50 shows 6.52%, 10.41% and 18.865% reductions in HC as compared to B30, B20, and diesel respectively. Diesel shows the lowest NOX emission at full load whereas B20 shows 2.2% higher emission than diesel and 2.17% and 8.14% lower emission than B30 and B50 respectively. As seen Diesel is 25%, 35% and 50% lower than B20, B30 and B50 at full load condition. The present work contributes in using B20 as alternative fuel for Petrol start/diesel run engines without major change for engines parts.