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An Investigation on a Cause of Cycle Variation in Hydrogen Fueled Engine with Direct Injection  

Kim, Y.Y. (Grad, Schiool of Sungkyunkwan Univ.)
Lee, Jong T. (School of Mechanical Engineering, Sungkyunkwan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.13, no.3, 2002 , pp. 233-241 More about this Journal
Abstract
To achieve hydrogen power system with high performance and stable operation, the COVimep of hydrogen fueled engine with direct injection was evaluated with the change of engine speed, injection timing, air-fuel equivalence ratio and spark timing. And the cause of cycle variation was analyzed by using coefficient of variation in combustion period defined in this study. the results showed that the cycle variation of hydrogen fueled engine is mainly dependent on the early combustion period.
Keywords
Hydrogen fueled engine; Cycle variation; Coefficient of variation in combustion period; Earlycombustion period; Rapid combustion period;
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