NDLI: Delay of ignition in early direct-injected PCCI engine combustion using fuel-evaporative cooling and cooled EGR

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Delay of ignition in early direct-injected PCCI engine combustion using fuel-evaporative cooling and cooled EGR

Content Provider	Semantic Scholar
Author	Sung, Yongha Jung, Gilsung Lim, Myung Taeck
Copyright Year	2011
Abstract	In early direct-injected PCCI combustion, one of the several approaches to ideal PCCI, the early injected fuel forms a nearly homogeneous air-fuel charge, but most or all of the mixture ignites and burns during the compression stroke, which limits its application to light load operation range with lower-than-expected thermal efficiency. In the present research a unique split fuel injection technique was developed to delay the combustion of the entire fuel for mixing with air before burning. Evaporative cooling effects provided by the fuel in the second injection at precise timing held the self-ignition of the early injected fuel, and thus allowed the entire fuel to burn in PCCI mode at a favorable time in a cycle, namely a little after the top center. The single cylinder test engine run this way demonstrated the diesel-like efficiency along with an-order-of-magnitude lower NOx emissions than in conventional diesel combustion.
Starting Page	1409
Ending Page	1414
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1007/s12206-011-0401-4
Alternate Webpage(s)	http://www.j-mst.org/On_line/admin/files/04-J2010-493_1409-1414_.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s12206-011-0401-4
Volume Number	25
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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