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An Investigation on the Proper Hydrogen Mixing Rate in Heavy-Duty Hydrogen-CNG Engine  

LlM, H.S. (Grad. School of Sungkyunkwan Univ.)
KIM, Y.Y. (Grad. School of Sungkyunkwan Univ.)
LEE, JONG T. (School of Mechnnical Engineering, Sungkyunkwan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.15, no.2, 2004 , pp. 89-97 More about this Journal
Abstract
A heavy duty hydrogen enriched CNG engine has the possibility to obtain stable operation at ultra lean condition and to reduce emission extremely. And it can also serve as a so called bridge technology between the current fossil fueled engine and the future hydrogen power system. The emission, torque and brake thermal efficiency characteristics of a heavy-duty hydrogen-CNG engine were investigated to determine the proper mixing rate of hydrogen and CNG. It was found that the proper mixing rates at ${\lambda}=1.4$ and ${\lambda}=1.6$ were around 20% and 30% for hydrogen addition rate respectively.
Keywords
Heavy-duty hydrogen-CNG engine; Proper mixing rate of hydrogen and CNG; Ultra lean condition; Hydrogen additon rate;
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