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A study of the relationship between NOx and the ion current in a direct-injection diesel engine

机译:直喷式柴油机中氮氧化物与离子流关系的研究

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摘要

This paper presents a modelling study of the ion current formed in a direct-injection diesel engine via chemical kinetics in order to investigate the strong correlation observed experimentally between tailpipe NOx and the ion current. An established n-heptane mechanism augmented with ionic and NOx sub mechanisms is used to model the formation of ions and NOx in three combustion systems, including a phenomenological diesel engine model whose validation is also presented here. Sensitivity analyses are conducted on electron and NOx formation to determine species and reactions common to both. The O radical and, by extension, the mixture temperature are found to be important to both NOx and electron concentrations via mechanisms identified here. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
机译:本文通过化学动力学方法对直喷柴油机中形成的离子流进行了建模研究,以研究排气管NOx与离子流之间实验观察到的强相关性。已建立的,由离子和NOx子机理增强的正庚烷机理用于模拟三个燃烧系统中离子和NOx的形成,包括现象学柴油机模型,此处也进行了验证。对电子和NOx的形成进行敏感性分析,以确定两者共同的种类和反应。通过此处确定的机理,发现O自由基以及混合物的温度对NOx和电子浓度均很重要。 (C)2016年燃烧研究所。由Elsevier Inc.出版。保留所有权利。

著录项

  • 来源
    《Combustion and Flame》 |2017年第2期|309-317|共9页
  • 作者

    Rao Rahul; Honnery Damon;

  • 作者单位

    Monash Univ, Dept Mech & Aerosp Engn, Lab Turbulence Res Aerosp & Combust, Melbourne, Vic, Australia;

    Monash Univ, Dept Mech & Aerosp Engn, Lab Turbulence Res Aerosp & Combust, Melbourne, Vic, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ion current; NOx; Diesel engine; N-heptane; Chemical kinetics;

    机译:离子流;NOx;柴油机;正庚烷;化学动力学;

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