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http://dx.doi.org/10.7316/KHNES.2013.24.2.136

A Study on the Application of the Lean Boosting in a Hydrogen-fueled Engine with the SI and the External Mixture  

Lee, Kwangju (Grad. School of Sungkyunkwan Univ.)
Lee, Jonggoo (Grad. School of Sungkyunkwan Univ.)
Lee, Jongtai (School of Mechanical Engineering, Sungkyunkwan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.24, no.2, 2013 , pp. 136-141 More about this Journal
Abstract
In order to achieve simultaneously the ultra-low NOx, the high power and the high efficiency in a hydrogen-fueled engine with SI and the external mixture, the effects of low temperature combustion, performance and exhaust are compared and analyzed by the application of the lean boosting. As the results, the decrease rate of the high temperature in the hydrogen is less decreased than the other fuels by high constant-volume specific heat. However, when the conditions of 1.7bar and ${\Phi}=0.33$ are reached by the lean boosting, the maximum gas temperature of hydrogen is decreased under the temperature of NOx formation and it is possible to stabilize combustion below 2% of COVimep. Also, at that condition, it is feasible to achieve simultaneously NOx-free and the power of gasoline level. Therefore, it is found that the lean boosting is useful in the hydrogen-fueled engine.
Keywords
Hydrogen-fueled engine; External mixture; Lean boosting; Low temperature combustion; NOx-free;
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