含氧燃料对柴油机燃烧和排放的影响

摘要

The present work was conducted on a naturally aspirated,4-cylinder diesel engine to investigate the effects of oxygenated fuels on the combustion and gaseous-particle emissions characteristics of the diesel engine.Meanwhile,the effects of oxygenated fuels on the total organic compounds emission rates were also determined and discussed by using three independent measurements,namely,a tapered element oscillating microbalance(TEOM),an OC/EC analyzer and a scanning mobility particle sizer combined with a thermodenuder(TD-SMPS).Finally,the consistency of the above three methods in the measurement of particle mass concentration and the feasibility in determining the organic fraction were discussed and evaluated.%在一台自然吸气的四缸柴油机台架上研究了含氧燃料对柴油机燃烧特性和气态-颗粒态污染物排放特性的影响,并使用微震荡天平、热光碳分析仪以及热扩散管联用扫描电迁移率粒径谱仪等3种相互独立的测试手段,测定了柴油机颗粒态有机成分的总排放,分析了含氧燃料对颗粒态有机成分的影响情况.最后,讨论了以上3种测试方法在颗粒质量测试方面的一致性,并提出了一种全新的在线测试颗粒态有机成分质量的方法.