ORAL
| SESSION: AdvancedMaterialsWedPM-R8 | Marquis International Symposium on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development(3rd Intl Symp. on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development) |
| Wed Oct, 25 2017 | Room: Maria Luisa & Maria Fernanda |
| Session Chairs: Mamata Lanjewar; Li Yao; Session Monitor: TBA |
14:30: [AdvancedMaterialsWedPM05]
Combustion Properties of N-Butanol, Methane and their mixtures in the Low Speed Two-Stroke Internal Combustion Engine Li
Yao1 ; Yang
Ding
2 ; Liguo
Song
2 ; Rui
Zhao
3 ; Wenwen
Xia
2 ; Yifan
Liu
2 ; Lianzhong
Huang
2 ;
1Dalian Maritime University, Dalian, China;
2Marine Engineering College, Dalian Maritime University, Dalian, China;
3Marine Engineering College, Dalian Maritime University,, Dalian, China;
Paper Id: 255
[Abstract] Because of a downturn in the shipping industry and the growing concern about the global climate in recent years, some of shipping firms have to choose to reduce engine speed to raise the economic efficiency. Taking advantage of the technical data of MAN B&W 6S70MC in this paper, the combustion properties of n-butanol has been studied at the speed range of 55-85 rpm in a Homogeneous charge compression ignition (HCCI) model at equivalence ratio of 0.71. The combustion properties of n-butanol-methane blends at different ratios have been performed at equivalence ratio of 0.71 when the speed was 85 rpm. At speeds rising from 55 rpm to 85 rpm, the increasing trend of temperatures in theoretical calculation was in accordance with the actual data from YU ZHONG HAI SHIPPING. Meanwhile the mole fractions NO, NO2 and N2O in the exhaust decreased as the speed lowering, as well as the increasing ratio of methane in the fuel. The mole fraction NO decreasing derived from the reason that a part of it was converted into N2. In addition, the fluctuation of the mole fraction NO2 was caused by the mutual conversion between NO2 and NO (NO2<->NO). The reason of mole fraction N2O decreasing was that it finally converted to N2.
