 Effects of compression ratio on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratioJianbiao Zhao, Fanhua Ma, Xingwang Xiong, Jiao Deng, Lijun Wang, Nashay Naeve and Shuli Zhao Energy, 2013, vol. 59, issue C, 658-665 Abstract: An experimental study on the effects of compression ratio (i.e. 10:1, 12:1) on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratio is reported. The experimental data are compiled on a turbocharged spark-ignition engine using 55% (volumetric ratio) HCNG (hydrogen enriched natural gas) fuel under MAP (manifold absolute pressure) of 50 kPa, spark-timing of 16° CA (crankshaft angle) and engine speed of 1200 rpm. The results show that the increase of compression ratio can improve the engine's combustion condition, fuel economy and power performance within the normal operation range (lambda less than 1.8) instead of the extremely lean operation. However, the lean limit cannot be broadened with the high compression ratio. It is also found that the THC (Total Hydrocarbon) emission and the NOx (Nitrogen Oxide) emission increase with the compression ratio. Keywords: Compression ratio; HCNG; Excess air ratio; Emission (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:59:y:2013:i:c:p:658-665 DOI: 10.1016/j.energy.2013.07.033 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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