Numerical Simulations of Methanol Engine Performance for High-altitude, Non-road Applications

Yao，Guang1; Zhou，Lei1; Chen，Zeyu1; Weng，Li2; Liu，Ke2; Zhu，Zan3

2019-12-19

10.4271/2019-01-2233

SAE Technical Papers   影响因子和分区

0148-7191

0148-7191

Ambient pressure and temperature are two main factors affecting the engine performance. As altitude increases, the air volume and air temperature entering the cylinder per cycle decrease due to the lowering of atmospheric pressure and temperature, which directly affects the engine performance. As a result, engine performance in the plateau environment degrades while the power, economy, and emission performance of the engine significantly deteriorate. This paper focuses on the simulation and parameter optimization of the combustion process of non-road methanol engines, and 1D simulation is for BSFC (Brake Specific Fuel Consumption) prediction while 3D simulation is for soot and NOx (Nitrogen Oxides) predictions. Discusses, analyzes and predicts the feasibility of non-road methanol engines for high altitude conditions. Especially the application of high proportion of methanol in non-road methanol engines at high altitudes. It provides numerical simulations based on the Yuchai YC6M series heavy-duty direct-injection ignition engine and corresponding engine bench test data which elucidate the effects of oxygen-containing methanol fuel on engine performance. The role of methanol in the blend as well as resulting changes in engine power and emissions were investigated; results show that methanol mass fraction of about 40% yields the slowest engine power reduction rate at high altitude. The results also show that the NOx emissions of the engine slowly decrease as altitude increases, by about 4% at altitude of 4000 m; the soot emissions increase as altitude increases.

EI

英语

其他

20202008651829

Atmospheric pressure ; Atmospheric temperature ; Methanol fuels ; Nitrogen oxides ; Numerical models ; Soot ; Roads and streets ; Direct injection ; Fuel economy

Roads and Streets:406.2 ; Atmospheric Properties:443.1 ; Fuel Combustion and Flame Research:521 ; Liquid Fuels:523 ; Energy Conservation:525.2 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Mathematics:921

2-s2.0-85084483110

Scopus

1.School of Mechanical Engineering and Automation,Harbin Institute of Technology,Shenzhen,Xili University Town,Nanshan District, Shenzhen, Guangdong,D207B, HIT Campus,518055,China
2.Southern University of Science and Technology,China
3.Guangxi Yuchai Machinery Co. Ltd,China

Yao，Guang,Zhou，Lei,Chen，Zeyu,et al. Numerical Simulations of Methanol Engine Performance for High-altitude, Non-road Applications[J]. SAE Technical Papers,2019(December).

Yao，Guang,Zhou，Lei,Chen，Zeyu,Weng，Li,Liu，Ke,&Zhu，Zan.(2019).Numerical Simulations of Methanol Engine Performance for High-altitude, Non-road Applications.SAE Technical Papers(December).

Yao，Guang,et al."Numerical Simulations of Methanol Engine Performance for High-altitude, Non-road Applications".SAE Technical Papers .December(2019).