Introduction of Abnormal Combustion in Hydrogen Internal Combustion Engines and the Detection Method

Jiahui Liu
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Abstract

As a clean, environmentally friendly and renewable energy source, hydrogen as an alternative engine fuel can greatly reduce atmospheric pollution and alleviate the shortage of oil resources, and is the most promising alternative fuel for vehicles among new fuels. However, due to its fast combustion rate and wide ignition limit, hydrogen often shows abnormal combustion phenomena (such as pre-ignition, backfire and knock), when it is used in the engine, thus affecting the performance and normal use of engines. In this paper, the advantages and disadvantages of hydrogen as an alternative fuel for the engine are summarized according to the characteristics of hydrogen. On this basis, the mechanism, influence factors and harm of abnormal combustion in the hydrogen internal combustion engine are analyzed and summarized, which provides a theoretical basis for solving abnormal combustion problems. Finally, several commonly used abnormal combustion detection methods are summarized.
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氢内燃机异常燃烧及检测方法介绍
氢作为一种清洁、环保的可再生能源,作为发动机替代燃料可以大大减少大气污染,缓解石油资源短缺,是新燃料中最有前途的车用替代燃料。然而,由于氢气的燃烧速度快,点火极限宽,在发动机中使用时经常出现不正常的燃烧现象(如预燃、回火和爆震),从而影响发动机的性能和正常使用。本文根据氢气的特点,总结了氢气作为发动机替代燃料的优缺点。在此基础上,对氢内燃机异常燃烧的机理、影响因素及危害进行了分析和总结,为解决异常燃烧问题提供了理论依据。最后总结了几种常用的异常燃烧检测方法。
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