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Fuel reforming in internal combustion engines

机译：内燃发动机的燃油重整

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摘要

This article offers a comprehensive overview of research on fuel reforming in internal combustion engines (ICE). It includes a historical perspective of research in this field, a discussion on the considerations to be made prior to choosing a primary fuel for reforming purposes, and the main processes in fuel reforming. Steam reforming offers a moderate degree of thermochemical recuperation and is applicable to methanol and ethanol feeding. Reforming with air reduces the degree of recuperation, but opens up the use of heavier fuels such as gasoline and diesel fuel. Dry reforming (with CO2) offers the best recuperation but is prone to fast coking. The choice of catalyst and the expected side reactions for each fuel are also discussed. While there is extensive literature on steam reforming catalysts and kinetics at atmospheric pressure, studies at higher pressures and/or on decomposition reactions are very few. The thermodynamics of fuel reforming in ICE and simulation approaches are also discussed. The paper also reports on engineering aspects of fuel reformer design and provides an overview of engines with thermo-chemical recuperation (TCR), fuel supply, and load control strategies in ICE with TCR. In-cylinder fuel reforming as well as application of fuel reforming for performance improvement of emission aftertreatment systems are subsequently discussed. This overview reveals ongoing diverse research activities in the field of onboard fuel reforming. However, several problems, including reformate burning velocity at typical for ICE conditions, in-cylinder behavior of directly injected reformates and particle formation still need to be addressed. A discussion on some of these unresolved issues is attempted herein. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本文提供了有关内燃机（ICE）燃料重整研究的全面概述。它包括该领域研究的历史视角，在选择用于重整目的的主要燃料之前应考虑的因素以及燃料重整的主要过程的讨论。蒸汽重整提供适度的热化学回收，适用于甲醇和乙醇进料。空气重整降低了回热程度，但开辟了使用较重燃料（例如汽油和柴油）的机会。干法重整（含二氧化碳）可提供最佳的回热效果，但易于快速结焦。还讨论了催化剂的选择以及每种燃料的预期副反应。尽管有大量关于蒸汽重整催化剂和在大气压下的动力学的文献，但在高压和/或分解反应方面的研究很少。还讨论了ICE中燃料重整的热力学和模拟方法。本文还报告了燃料重整器设计的工程方面，并概述了带热化学回收（TCR）的发动机，带有TCR的ICE中的燃料供应和负荷控制策略。随后讨论了缸内燃料重整以及燃料重整在排放后处理系统性能改善中的应用。该概述揭示了车载燃料重整领域正在进行的各种研究活动。但是，仍然需要解决一些问题，包括在ICE条件下典型的重整产品燃烧速度，直接注入重整产品的缸内行为以及颗粒形成。本文尝试讨论其中一些未解决的问题。 （C）2018 Elsevier Ltd.保留所有权利。

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  • 来源
    《Progress in Energy and Combustion Science》 |2018年第7期|88-114|共27页
  • 作者

    Tartakovsky L.; Sheintuch M.;

  • 作者单位

    Technion Israel Inst Technol, Fac Mech Engn, IL-3200003 Haifa, Israel;

    Technion Israel Inst Technol, Fac Chem Engn, IL-3200003 Haifa, Israel;

  • 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
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