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首页> 外文期刊>International journal of engine research >Analysis of diesel particulate: influence of air-fuel ratio and fuel composition on polycyclic aromatic hydrocarbon content
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Analysis of diesel particulate: influence of air-fuel ratio and fuel composition on polycyclic aromatic hydrocarbon content

机译:柴油机颗粒物分析:空燃比和燃料成分对多环芳烃含量的影响

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摘要

Polycyclic aromatic hydrocarbons (PAH) are pollutants produced during the combustion process and are considered as soot precursors. PAH emissions are not presently regulated although they may have dangerous effects on human health. A comparison is presented here of the influence of engine parameters (air-fuel ratio and brake mean effective pressure) on the composition of particulates. The effects of a water-fuel emulsion on PAH (commonly examined in large engines) are also studied in a 1.9 L commonrail diesel engine: 13 per cent of water added to the fuel decreases the PAH concentration in diesel soot by half. The PAH emissions during cold-start of an automotive diesel engine are also presented.
机译:多环芳烃(PAH)是燃烧过程中产生的污染物,被认为是烟灰的前体。尽管PAH排放可能对人体健康造成危险,但目前尚无相关法规。此处比较发动机参数(空燃比和制动平均有效压力)对颗粒成分的影响。在1.9升共轨柴油发动机中还研究了水燃料乳化液对PAH的影响(通常在大型发动机中进行了研究):向燃料中添加13%的水会使柴油机烟灰中PAH的浓度降低一半。还介绍了汽车柴油机冷启动期间的PAH排放。

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