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二甲醚-氫氣混合燃料HCCI燃燒與排放試驗(yàn)
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國(guó)家高技術(shù)研究發(fā)展計(jì)劃（863計(jì)劃）資助項(xiàng)目（2008AA11A121）


Combustion and Emissions Performance of a HCCI Engine Fueled with DME and Hydrogen Blends
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    在壓縮比為18.5的HCCI發(fā)動(dòng)機(jī)上進(jìn)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(yàn),。試驗(yàn)結(jié)果表明，在試驗(yàn)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(dòng)平均有效壓力,，當(dāng)DME流量為3.5L/min時(shí),，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(jī)燃燒時(shí)的20%~30%,，但NOx排放量較純DME HCCI燃燒有所增加。

    Abstract:

    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(jì)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(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),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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