Study of combustion and emission characteristics of turbocharged diesel engine fuelled with dimethylether |
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Authors: | Junhua WU Zhen HUANG Xinqi QIAO Jun LU Junjun ZHANG Liang ZHANG |
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Affiliation: | (1) Key Laboratory of Power Machinery and Engineering, Ministry of Education, Shanghai Jiaotong University, Shanghai, 200030, China |
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Abstract: | An experimental study of a turbocharged diesel engine operating on dimethyl ether (DME) was conducted. The combustion and
emission characteristics of the DME engine were investigated. The results show that the maximum torque and power of DME are
greater than those of diesel, particularly at low speeds; the brake specific fuel consumption of DME is lower than that of
diesel at low and middle engine speeds, and the injection delay of DME is longer than that of diesel. However, the maximum
cylinder pressure, maximum pressure rise rate and combustion noises of the DME engine are lower than those of diesel. The
combustion velocity of DME is faster than that of diesel, resulting in a shorter combustion duration of DME. Compared with
the diesel engine, NO
x
emission of the DME engine is reduced by 41.6% on ESC data. In addition, the DME engine is smoke free at any operating condition.
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Translated from Transactions of CSICE, 2006, 24(3): 193–199 译自: 内燃机学报] |
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Keywords: | dimethyl ether combustion emissions smoke |
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