This paper presents a study on the effect of the ratio of biodiesel on performance and emissions of diesel engines. Research engine is a cylinder engine AVL-5402 is simulated by software AVL-Boost. Simulated fuel include fossil diesel and biodiesel blended with the replacement rate from 0% to 50% including B0, B10, B20, B30, B40, B50 respectively, simulation mode in 1400 (rev/min), speed for maximum torque value of the engine, at the rate of 25%, 50% and 75% load. Parameters to be evaluated as combusstion characteristic, power, fuel consumption and emissions based on the proportions of blended biodiesel. The results show that there is a relationship between the proportion of blended biodiesel and the parameters of the engine. Specifically, the ratio of biodiesel blend increases, peak pressure and rate of heat release decrease while peak temperature increase, the tendency reduce engine power, increase fuel consumption. The emissions of CO and soot reduces, while NOx increases.
Keyword
engine simulation, biodiesel, emission, mixing ratio
