COMBUSTION CHARACTERISTICS OF SI ENGINE FUELED WITH 2,5- DIMETHYLFURAN AND GASOLINE BLENDS USING AVL-BOOST SIMULATION

Abstract

Currently, 2,5-dimethylfuran (DMF) has shown that it is a potential alternative fuel source to replace the traditional fuels such as gasoline and diesel. However, the combustion and emission properties of DMF have been rarely characterized, especially the using of DMF-gasoline blends in SI engines. This article present how the fuel properties and loads affected the combustion of DMF-gasoline blends in a four-cylinder SI engine using AVL-Boost simulation. The simulation conditions were that the throttle valves opening at 75% and 100%, and speed from 1000 to 6000 rpm with the using blends is DMF10, DMF20, DMF30, DMF40 and DMF 50 (corresponding with the DMF ratio in DMF-gasoline blends is 10%, 20%, 30%, 40% and 50%). The simulation result is that when adjusting the amount of fuel supplied to a cycle of engine to ensure that λ=1(λ: relative Air to Fuel ratio) when we change the DMF fuel ratio in the blends with gasoline in almost the same power and torque as pure gasoline without changing any structure of the engine. In addition, to remains the engine power when using from DMF10 to DMF50, its need to be increased the average amount of fuel to 9.27% compare to the pure gasoline over the full speed range of 1000÷6000 rpm.