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A Study on Lean Combustion Characteristics with Hydrogen Addition in a Heavy Duty Natural Gas Engine  

Park, Cheol-Woong (Engine research team, Korea Institute of Machinery and Materials)
Kim, Chang-Gi (Engine research team, Korea Institute of Machinery and Materials)
Choi, Young (Engine research team, Korea Institute of Machinery and Materials)
Won, Sang-Yeon (Engine research team, Korea Institute of Machinery and Materials)
Publication Information
Journal of the Korean Institute of Gas / v.14, no.4, 2010 , pp. 12-17 More about this Journal
Abstract
Natural gas is one of the most promising alternatives to gasoline and diesel fuels because of its high thermal efficiency and lower harmful emissions, including $CO_2$. However, the possibility of partial burn and misfire makes the benefits of natural gas fueled engine worse under lean burn operation condition, Hydrogen addition can promote the combustion characteristics while reduces emissions extremely. In this study, the effect of hydrogen addition on an engine performance was investigated. The results showed that thermal efficiency was increased due to the expansion of lean operation range under stable operation. NOx emission can be significantly reduced with the small increase in HC or CO emissions.
Keywords
Heavy Duty Natural Gas Engine; Lean Combustion; Hydrogen Addition; Combustion Stability;
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