Unregulated Emissions and Their Three-Way Catalytic Conversion of a Spark Ignition Engine Fueled with Ethanol-Gasoline

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Unregulated Emissions and Their Three-Way Catalytic Conversion of a Spark Ignition Engine Fueled with Ethanol-Gasoline

更新时间：2025-07-09

- Unregulated Emissions and Their Three-Way Catalytic Conversion of a Spark Ignition Engine Fueled with Ethanol-Gasoline
- Vol. 44, Issue 1, Pages: 13-16+116(2010)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK464
- Online First：10 January 2010，
  
  Published：2010
- 稿件说明：
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Unregulated Emissions and Their Three-Way Catalytic Conversion of a Spark Ignition Engine Fueled with Ethanol-Gasoline[J]. 2010, 44(1): 13-16+116.
DOI：

Unregulated Emissions and Their Three-Way Catalytic Conversion of a Spark Ignition Engine Fueled with Ethanol-Gasoline[J]. 2010, 44(1): 13-16+116. DOI：

摘要

利用气相色谱-氦离子化快速检测方法

研究了一台多点电喷汽油机分别燃用乙醇汽油混合燃料(乙醇的体积分数分别为0%、10%、20%和85%

记为E0、E10、E20和E85)时的非常规醇醛排放特性及其催化转化特性.研究结果表明:与汽油机相比

E10和E20混合燃料发动机的甲醛、乙醛和乙醇排放随乙醇掺混比的增加而增加

而E85混合燃料发动机的甲醛、乙醛排放增幅略小

约为E0发动机的1.6倍和2.4倍

乙醇排放却大幅增加

约为E10混合燃料发动机的35倍; 随负荷的增加

乙醛排放整体呈增加的趋势

E10和E20混合燃料发动机的乙醇排放降低

而E85混合燃料发动机的乙醇排放却增加; 普通的三效催化器对乙醛、乙醇排放的转化效率均在75%以上

但对甲醛的转化效果不佳

对E20和E85混合燃料发动机甲醛排放的转化效率低于30%.

Abstract

Four typical ethanol-gasoline blends

E10

E20 and E85

containing 0%

10%

20% and 85% of ethanol in volume respectively were prepared to investigate the effects of ethanol/gasoline blends(gasohol)on engine unregulated emissions. A multiple-point injection gasoline engine was applied in the experiment and the unregulated emissions were detected by a gas chromatography with a pulsed discharge helium ionization detector. The performance of a three-way catalytic converter(TWC)was examined. The experimental results show that the emissions of formaldehyde

acetaldehyde and ethanol increased with the increase of ethanol ratio in E10 and E20. The emission of formaldehyde and acetaldehyde from the engine with E85 increased slightly

about 1.6 and 2.4 times as large as that with E0

respectively

while the emission of ethanol was about 35 times as large as that with E10. The emission of acetaldehyde increased with the load

and the ethanol emission from the engine with E10 or E20 decreased but that with E85 increased slightly with the increase in the load. The conversion efficiency of aldehyde and ethanol emissions with TWC was above 75% while the conversion efficiency of formaldehyde emission from the engine with E20 or E85 was less than 30%.

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references

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