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Sensitivity analysis of fuel types and operational parameters on the particulate matter emissions from an aviation piston engine burning heavy fuels

机译：燃料类型和运行参数对燃烧重油的航空活塞发动机颗粒物排放的敏感性分析

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摘要

Currently, general aviation aircrafts have growing demand for internal combustion engines burning heavy fuels (i. e. diesel or kerosene) due to the concerns on the safety, costs and availability of aviation gasoline (AVGAS). The application of heavy fuels requires the change of combustion mode from premixed mode to diffusion mode, which will inevitably increase the particulate matter (PM) emissions as incomplete combustion products. In this work, the size-resolved number concentrations of the PM emissions emitted from an internal compression ignition engine burning diesel, RP3 and FischerTropsch (FT) kerosene were studied by a Scanning Mobility Particle Sizer Spectrometer (SMPS). An opacimeter was utilized to measure the opacity of the soot emissions (linearly related to the soot mass), which was in consistent with the SMPS data. Results demonstrated that the FT fuel produced the lowest PM emissions due to absence of sulfur and aromatic contents. Diesel turned out to have the greatest ` sooting' tendency and produced more accumulation mode PM in number than FT fuel by a factor of four, and more PM in mass by approximately three times. Moreover, the effects of fuel types and engine operational parameters were quantified in a systematic manner by adopting the Response Surface Method (RSM) in Design of Experiments (DoE). According to the ANOVA (Analysis of Variance), the DoE derived model was statistically significant and demonstrated that the engine load was the dominant factor for soot generation, followed by injection pressure and fuel types. Relevant combustion parameters and their link with PM emissions were further discussed, illustrating that atomization process had great impact on the ignition delay and thus affected soot generation. (C) 2017 Elsevier Ltd. All rights reserved.
机译：当前，由于对航空汽油（AVGAS）的安全性，成本和可获得性的关注，通用航空飞机对燃烧重燃料（即柴油或煤油）的内燃机的需求不断增长。重燃料的应用需要将燃烧模式从预混合模式更改为扩散模式，这将不可避免地增加作为不完全燃烧产物的颗粒物（PM）排放。在这项工作中，通过扫描移动粒度分析仪（SMPS）研究了从内部压缩点火发动机燃烧柴油机RP3和费托（FT）煤油排放的PM排放的尺寸分辨数量浓度。使用不透明度计测量烟尘排放的不透明度（与烟尘质量成线性关系），这与SMPS数据一致。结果表明，由于不含硫和芳烃，FT燃料产生的PM排放最低。事实证明，柴油具有最大的“烟ot”趋势，并且在积聚模式下产生的PM数量要比FT燃料多四倍，而PM的质量大约是三倍。此外，通过在实验设计（DoE）中采用响应面方法（RSM），系统地量化了燃料类型和发动机运行参数的影响。根据方差分析（ANOVA），DoE得出的模型具有统计意义，并且证明发动机负载是烟灰生成的主要因素，其次是喷射压力和燃料类型。进一步讨论了相关的燃烧参数及其与PM排放的联系，表明雾化过程对点火延迟有很大影响，从而影响了烟尘的产生。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2017年第15期|520-528|共9页
  • 作者

    Chen Longfei; Liang Zhirong; Liu Haoye; Ding Shirun; Li Yanfei;

  • 作者单位

    Beihang Univ, Energy & Environm Int Ctr, Sch Energy & Power Engn, Beijing 100191, Peoples R China;

    Beihang Univ, Energy & Environm Int Ctr, Sch Energy & Power Engn, Beijing 100191, Peoples R China;

    Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China;

    Beihang Univ, Energy & Environm Int Ctr, Sch Energy & Power Engn, Beijing 100191, Peoples R China;

    Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China;

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

    Aviation piston engine; RP3; FT; PM; Response Surface Method; Design of Experiments;

    机译：航空活塞发动机;RP3;FT;PM;响应面法;实验设计;

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