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二甲醚-氫氣混合燃料HCCI燃燒與排放試驗
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國家高技術研究發(fā)展計劃（863計劃）資助項目（2008AA11A121）


Combustion and Emissions Performance of a HCCI Engine Fueled with DME and Hydrogen Blends
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    摘要:

    在壓縮比為18.5的HCCI發(fā)動機上進行二甲醚(DME)流量分別為2.6和3.5L/min，不同混氫比例混合燃料的燃燒及排放試驗。試驗結果表明，在試驗工況下，混氫HCCI燃燒可以提高缸壓峰值、DME高溫氧化放熱峰值和制動平均有效壓力，當DME流量為3.5L/min時，混氫使缸壓峰值提高26.4%；DME混氫燃燒可以降低CO和HC的排放量，其中CO排放量可以減少到DME HCCI原機燃燒時的20%~30%，但NOx排放量較純DME HCCI燃燒有所增加。

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    DME and hydrogen were blended with air in intake and the HCCI combustion was realized. The speed of engine was hold at 1400r/min and the mass flow rate of DME was ranged at 2.6 and 3.5L/min. With the hydrogen fraction increasing, the excessive air coefficient λ was reduced until the engine knocked. The result showed that DME blended with hydrogen could increase the peak pressure, heat release rate and BMEP. The peak pressure was improved 26.4% when the DME flow was 3.5L/min. In the emissions, CO and HC could be reduced, and CO emission was only 20%~30% of the original data after hydrogen enriched. However, NOx emissions increased with the addition of hydrogen.

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梁晨,紀常偉,孔令凱,朱永明,戴曉旭,范伯元.二甲醚-氫氣混合燃料HCCI燃燒與排放試驗[J].農業(yè)機械學報,2011,42(3):15-20. Liang Chen, Ji Changwei, Kong Lingkai, Zhu Yongming, Dai Xiaoxu, Fan Boyuan. Combustion and Emissions Performance of a HCCI Engine Fueled with DME and Hydrogen Blends[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):15-20.

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