乙醇汽油车用发动机NOx排放特性的数值模拟研究

Q1 Social Sciences HumanMachine Communication Journal Pub Date : 2010-04-24 DOI:10.1109/MVHI.2010.148
Xinguang Li, A. Zhang
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引用次数: 0

摘要

为了研究乙醇汽油车用发动机NOx排放特性,利用GT-POWER软件建立了汽油机数值模拟模型,并通过实验数据进行了验证。在此基础上,对空燃比、压缩比和点火提前角进行了变参数研究。模型结果表明,压缩无线电和空气-燃料无线电在NOx排放特性中起着重要作用。随着压缩比的增大,氮氧化物排放量有明显的改善。随着压缩比的提高,气缸压力和温度升高,导致NOx排放量增加。随着空燃比的提高,NOx排放量先增加后降低。较大的点火提前角可以降低NOx的排放,同时爆震的危险性也相应增加。因此必须选择合适的点火提前角。
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Numerical Simulation Research of NOx Emissions Characteristic of Vehicle Engine Fuelled with Ethanol Gasoline
A numerical simulation model for gasoline engine was established by GT-POWER in order to study the NOx emissions characteristic of vehicle engine fuelled with ethanol gasoline and was validated by Experimental data. Based on the model, the variable parameters study including air-fuel radio, compression radio and ignition advance angle were carried out. The model results showed that the compression radio and the air-fuel radio played an important role during the NOx emissions characteristic. There is a significant improvement of the NOx emissions with the compression ratio increases. The cylinder pressure and temperature increased with the improvement of the compression ratio brought out the NOx emissions rise. With the improvement of the air-fuel ratio, NOx emissions increased first and then decreased. A larger ignition advance angle can decrease the NOx emissions, at the same time the danger of knock corresponding increased. So the ignition advance angle must be appropriate selected.
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CiteScore
10.00
自引率
0.00%
发文量
10
审稿时长
8 weeks
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