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| Experimental Study on Combustion and Emission Characteristics of a Lean Burn Engine Fueled with Methanol/Gasoline |
| DOI： |
| Key Words:GDI engine methanol/gasoline lean burn combustion characteristics emission characteristics |
| Author Name | Affiliation | | HUANG Zhen,JIN Zhaohui,JIANG Beiping,REN Ruixue,AN Dong,HONG Wei | 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
2.Changchun FAW Sihuan Engine Manufacture Co., Ltd., Changchun 130000, China |
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| Abstract:The combustion and emission characteristics of a GDI turbocharged engine fueled with different methanol/gasoline blends respectively were investigated under lean burn conditions. Results show that under lean burn conditions, the equivalent fuel consumption tends to decrease first and then increase with the mixture concentration getting thinner. It will increase with the rise of methanol/gasoline ratio, but lower than the original. In the process of the mixture getting thinner, the peak cylinder pressure and combustion temperature decrease, while the combustion duration and cycle to cycle variability gradually increase, Under lean burn conditions, the CO emissions tend to decrease and the HC emissions decrease first and the increase, while the NOx emissions increase first and then decrease, and will decrease with the increase of the volume fraction of methanol. Moreover, when the engine operates with methanol/gasoline blends, the emission levels of NOx and CO are lower than with gasoline operation. |
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