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http://dx.doi.org/10.7316/KHNES.2015.26.1.028

An Experimental Study on Phenomenon of Backfire in H2 HCCI Engine  

Lee, Jongmin (Grad. School of Sungkyunkwan Univ.)
Lee, Jonggoo (Grad. School of Sungkyunkwan Univ.)
Lee, Kwangju (School of Mechanical Engineering, Sungkyunkwan Univ.)
Lee, Jongtai (School of Mechanical Engineering, Sungkyunkwan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.26, no.1, 2015 , pp. 28-34 More about this Journal
Abstract
HCCI (Homogeneous Charged Compression Ignition) hydrogen engine has relatively narrower operation range caused by backfire occurrence due to the rapid pressure rising by using higher compression ratio and significant reaction velocity. In this study, to grasp of backfire process and characteristic in the HCCI research hydrogen engine, in-cylinder pressure, intake pressure and backfire limit range are analyzed with compression ratio and intake valve open timing, experimentally. As the result, it is observed that knock is occurred just before backfire occurrence in HCCI hydrogen engine but not spark igntion type, this phenomenon is always the same for the above variables. Also backfire limit range are expanded up to 50% for the more retarding intake valve open timing in this operating conditions.
Keywords
Homogeneous charge compression ignition; Backfire; Knock; High compression ratio; Intake valve open timing;
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  • Reference
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