Characteristics of Particle Number and Exhaust emission by Alteration of MTBE Contents in Gasoline

Abstract

While the oxygen content of gasoline for automobiles in Korea is regulated to less than 2.3 weight %, European and World-Wide Fuel Charter (WWFC) regulate it to less than 2.7 weight %. The oxygen content of oxygen-containing materials increases the octane number of the fuel due to the secondary combustion in the internal combustion engine. It has been reported to be effective in reducing emissions, such as CO, HC, which is caused by incomplete combustion. Before 2000s in the United States and Europe, there has been many researches about vehicle application of the changes in oxygen content of gasoline. However, there are not many domestic researches which reflect the improvement of the fuel quality and automotive technology. In this study, fuels of three different oxygen contents were applied to GDI and MPI engines. As a result, the changes of fuel consumption and emission gas were very similar depends of the oxygen content changes. The PN in GDI engine was decreased as the oxygen content was increased.

An experimental Study of the Effect of MTBE contents on Exhaust Emissions and Fuel Economy of MPI and GDi Vehicles

“…이전 연구 10) 에서는 옥탄가(RON)를 92로 고정시키고 산소함량(1.0, 2.3, 2.7 wt %)을 변화시키면서 MPI (Multi Point Injection) 및 GDi(Gasoline Direct In- Fig. 3의 (a) Rate of change(%) …”