Emission and particulate topography characteristics of diesel engine fuelled with methanolblending biodiesel
1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Energy, Soochow University, Suzhou, Jiangsu 215006, China
Abstract： On the 186FA diesel engine, the experiments of blending biodiesel and methanolblending biodiesel were carried out, and the exhaust particulates were collected. The effects of methanolblending biodiesel on engine performance and topographic characteristics of particulates were also analyzed. The results show that with the increasing of methanol proportion, the engine comsumption with microemulsion fuels is increased especially at low load with small difference for medium and high load, and the HC emission of diesel engine increases gradually. As the increasing load becomes big, the HC decreases slowly. Compared with blending biodiesel, the fuels mixed with methanol can effectively decrease NOx and PM emission, and at high load, CO emission is reduced evidently. The particulates for different fuels represent catenulate, dendritic and cluster structures. When the methanol proportion is increased, the particulates become more compacted, and the size distribution of particulates is decreased with increased aggregation degree.
2016, Vol. 37 
