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DMC與DIPE對汽油機燃燒及排放性能影響試驗
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    摘要:

    選用碳酸二甲酯(DMC)和二異丙醚(DIPE)作為汽油抗爆劑,，均按體積分數(shù)3%,、6%分別添加到93號汽油中，研究其抗爆性能,。在發(fā)動機試驗臺架上,，通過測量缸壓,、燃油消耗率、排放等數(shù)據(jù),，研究添加不同體積分數(shù)DMC和DIPE的汽油對發(fā)動機燃油經(jīng)濟性,、燃燒特性和排放特性的影響。試驗結(jié)果表明,，在添加體積分數(shù)為3%時,，DMC和DIPE使燃油消耗率平均增加0.85%和1.6%，添加體積分數(shù)為6%時,，DMC和DIPE使燃油消耗率平均增加3.7%和1.3%；缸壓峰值點都出現(xiàn)下降,，最大放熱點推遲,，在低負荷表現(xiàn)更為明顯；HC排放都得到顯著改善,，

    Abstract:

    DMC改善NOx排放,。 MTBE will pollute the groundwater, and it is urgent to find its alternatives. Dimethyl carbonate (DMC) and diisopropyl ether (DIPE) were selected as gasoline antiknocks, which added to 93 gasoline by 3% and 6% volume fraction respectively, and then their antiknock characteristics were studied by experiment. The effects of different volume fraction DMC and DIPE on gasoline engine fuel economy, combustion and emissions characteristics were obtained by measuring cylinder pressure, fuel consumption and emissions data through engine test-bed.The results show that DMC and DIPE lead to fuel consumption increasing 0.85% and 1.6% respectively at 3% volume fraction, and 3.7% and 1.3% respectively at 6% volume fraction. The peak value of cylinder pressure drop is decreased and the largest release heat point is postponed, especially at low loads. The HC emissions are lowered significantly and DMC reduces the Nox emissions.  

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方澤軍,紀常偉,汪碩峰,閆皓. DMC與DIPE對汽油機燃燒及排放性能影響試驗[J].農(nóng)業(yè)機械學報,2008,39(7):5-8.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(7):5-8.

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