柴油机掺烧生物柴油NOx 和Soot排放控制研究

郑佳; 周斌; 闫嘉楠; 南靖雯

doi:10.3969/j.issn.1001-2222.2018.03.005

车用发动机 >

2018 , Vol. 0 >Issue 3: 31 - 36

DOI: https://doi.org/10.3969/j.issn.1001-2222.2018.03.005

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柴油机掺烧生物柴油NO_x 和Soot排放控制研究

郑佳 ,
周斌 ,
闫嘉楠 ,
南靖雯

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(西南交通大学机械工程学院，四川成都 610031)

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NO_xand Soot Emission Control of Diesel Engine Fueled with Diesel and Biodiesel Blended Fuel

ZHENG Jia ,
ZHOU Bin ,
YAN Jianan ,
NAN Jingwen

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(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031，China)

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摘要

对柴油机燃用生物柴油-0号柴油混合燃料的NO_x和Soot排放特性进行了仿真研究。在柴油机参数不作任何改变的情况下燃用体积分数分别为10%，20%，30%，40%和50%的生物柴油混合燃料，与原机的NO_x和Soot排放特性进行对比。研究表明：随着混合燃料中生物柴油体积分数的增加，柴油机Soot排放降低，NO_x排放增大。EGR的引入使柴油机NO_x排放降低，同时也使Soot排放增加。在1 800 r/min中低负荷工况下，大比例生物柴油0号柴油混合燃料应用于柴油机时，可通过调节EGR率使得柴油机NO_x和Soot排放都控制到与原机相当。

关键词： 柴油机; 生物柴油; 排放控制; 废气再循环

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郑佳 , 周斌 , 闫嘉楠 , 南靖雯 . 柴油机掺烧生物柴油NO_x 和Soot排放控制研究[J]. 车用发动机, 2018 , 0(3) : 31 -36 . DOI: 10.3969/j.issn.1001-2222.2018.03.005

Abstract

The NO_xand soot emissions of diesel engine fueled with biodiesel and 0# diesel blended fuel were simulated and analyzed. Blended fuels with the biodiesel volume fractions of 10%, 20%, 30%, 40% and 50% were fueled on the same engine and their NO_xand soot emissions were compared with those fueled with pure diesel. The results showed that soot emission reduced and NO_xemission increased with the increase of biodiesel volume fraction. Under medium and low load at 1 800 r/min, the NO_xand soot emissions of high concentration biodiesel and 0#diesel could be adjusted to the original level by adjusting the EGR rate.

Key words： diesel engine; biodiesel; emission control; EGR

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