Experimental Study on Engine Performance and Emissions for an Engine Fueled with Natural Gas-Hydrogen Mixtures

Zuohua Huang, Bing Liu, Ke Zeng, Yinyu Huang, Deming Jiang, Xibin Wang, Haiyan Miao

Research output: Contribution to journalArticlepeer-review

103 Citations (Scopus)

Abstract

An experimental study on the performance and emissions of a spark ignition engine operating on the natural gas-hydrogen mixtures was conducted. The results show that the engine lean-burn limit is extended by the addition of hydrogen into natural gas. For a specific excessive air ratio, engine power output and thermal efficiency decrease with the increase of hydrogen fraction in natural gas when the hydrogen fraction is less than a certain value (20%) whereas engine power output and thermal efficiency increase with further increasing hydrogen fraction when hydrogen fraction is larger than a certain value (20%). Addition of hydrogen into natural gas decreases the exhaust hydrocarbon (HC) concentrations. However, addition of hydrogen into natural gas will increase NOx concentration. Thus, an engine operating on lean-burn natural gas-hydrogen combustion is favorable for getting higher thermal efficiency and lower emissions.

Original languageEnglish
Pages (from-to)2131-2136
Number of pages6
JournalEnergy and Fuels
Volume20
Issue number5
Early online date31 Aug 2006
DOIs
Publication statusPublished - 1 Sep 2006
Externally publishedYes

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