| EFFECT OF METHANOL ADDITION ON COMBUSTION AND EMISSIONS CHARACTERISTICS ON A TURBOCHARGED GDI ENGINE
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| 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 |
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| ABSTRACT |
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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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Corresponding Author.
Jiakun Du , Email. 
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