No_X emission from a spark ignition engine using 30%iso-butanol-gasoline blend: part 1--preheating inlet air

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• 作者：Alasfour ; F. N.
• 关键词：Iso-butanol ; NO_x emission ; air preheating ; spark ignition engine
• 刊名：Applied Thermal Engineering
• 出版年：1998
• 期刊代码：8_13594311
• 类别：ce
• 出版时间：May, 1998
• 卷：18
• 期：5
• 页码：245-256
• 文件大小：695 K

摘要

This research investigated the effect of using a 30%iso-butanol-gasoline blend on NO_x emission in a spark ignition engine. The influence of preheating inlet air on NO_x emission was also investigated at different fuel/air equivalence ratio. A single cylinder Hydra research engine was used, running at 1500 rpm over a wide range of fuel/air equivalence ratio (0.7-1.1). It was observed that by using the 30%iso-butanol-gasoline blend, the maximum level of NO_x emission is reduced by 9%compared to gasoline and the reduction of NO_x level was evident in the rich region. The experimental investigations were performed under different values of inlet air temperatures. Preheating the inlet air above ambient temperature causes the NO_x emission level to increase for all fuel/air equivalence ratios. At Φ = 0.90, a 10%increase in NO_x was observed when the inlet air temperature increased from 40 to 60°C. For 30%iso-butanol-gasoline blend experimental results show that preheating inlet air causes knock and misfire to occur at less advanced ignition timing.