An Investigation of a Cause of Backfire and Its Control Due to Crevice Volumes in a Hydrogen Fueled Engine
An Investigation of a Cause of Backfire and Its Control Due to Crevice Volumes in a Hydrogen Fueled Engine
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DOI：
10.1115/1.1339985
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发表时间：
2001
影响因子：
1.5
通讯作者：
J. T. Lee;Y. Y. Kim-Y.;C. W. Lee;J. Caton
中科院分区：
文献类型：
--
作者：
J. T. Lee;Y. Y. Kim-Y.;C. W. Lee;J. Caton
为了了解使用外部（感应）燃料供应的氢燃料发动机中回火的发生，使用改进的实验发动机完成了基础研究。发现燃烧室中的缝隙体积与回火的发生之间存在关系。结果表明，火花塞电极周围的缝隙不是导致回火的主要原因，而活塞顶岸缝隙、第二岸和环槽内混合气的燃烧状态对回火的发生有直接影响。通过增加顶面缝隙容积和窜气量，可以延长回火前的当量比。
To understand the occurrence of backfire in hydrogen fueled engines using an external (inducted) fuel supply, a fundamental study was completed using a modified experimental engine. A relation was found between the crevice volume in the combustion chamber and the occurrence of backfire. The results showed that the crevice around the spark plug electrode was not a major cause of backfire, hut the combustion state of the mixture in the piston top land crevice, second land, and ring groove did have a direct affect on backfire occurrence. By increasing the top land crevice volume and the amount of blow-by gas, the equivalence ratio before backfire occurred was extended.