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International Journal of Automotive Technology > Volume 23(5); 2022 > Article
International Journal of Automotive Technology 2022;23(5): 1405-1417.
doi: https://doi.org/10.1007/s12239-022-0123-x
Hong Chen 1, Jiakun Du 1, Yuhuai Li 2, Wenfeng Zhan 1, Jian Wu 1, Fangxi Xie 2, Guangquan Wu 1
1GAC Automotive Research & Development Center
2State Key Laboratory of Automotive Simulation and Control, Jilin University
PDF Links Corresponding Author.  Jiakun Du  , Email. dujiakun@gacrnd.com
To enrich the knowledge and understanding of the application effect of methanol fuel in the current engine, the influence of methanol-gasoline blended fuel containing 10 %, 20 % and 30 % methanol addition (M10, M20 and M30) on the engine performance, combustion and emissions were studied on a turbocharged and direct injection engine with original control system and control parameters. The results showed that at the conditions with low speed, the peak heat release rate and cylinder pressure were decreased by the use of blended fuel while it shown an increased peak combustion pressure and heat release rate at high speed. Meanwhile, the combustion center of blended fuel was obviously different from gasoline and its optimal value, and the combustion variation was increased at low load. The fuel consumption lifted continuously with the increase of methanol addition ratio, and the equivalent fuel consumption of M10 and M20 also was higher than that of pure gasoline. For NOx emissions, although it has been improved continuously for M10, M20 and M30 under the higher engine load, the higher emissions were obtained for M10 and M20 at lower load. In addition, compared with gasoline fuel, the whole particle distribution curve and number concentration was significantly deteriorated with methanol addition.
Key Words: Spark engine, Methanol-gasoline blended fuel, Performance, Combustion, Particle emissions
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