With high oxygen content and cetane number, polyoxymethylene dimethyl ether 3 (PODE3) is favorable as a fuel to be used in internal combustion engines. In this study, PODE3/diesel/gasoline blends in a homogeneous charge compression ignition engine are numerically studied for the first time. The effects of fuel blend ratio as well as equivalence ratio (ER) are investigated. It is noticed that high temperature heat release depends largely on blend ratio. Furthermore, indicated thermal efficiency is observed to be better with higher ER and is generally higher with increased PODE3. As for emissions, higher ERs show trends of less CO and more NOx. Moreover, similar trends are seen when diesel addition to PODE3 is made comparison with gasoline addition to PODE3, potentially putting CO and NOx in a trade-off relationship.
Keywords PODE3, polyoxymethylene dimethyl ether, homogeneous charge compression ignition, internal combustion engine, oxygenated fuel, renewable fuel