Effects of reformed fuel composition in “single” fuel reactivity controlled compression ignition combustion

Flavio D.F. Chuahy and Sage L. Kokjohn

Applied Energy, 2017, vol. 208, issue C, No S0306261917314794, 11 pages

Abstract: The present effort uses a combination of engine experiments and constant volume ignition delay calculations to investigate reformed fuel RCCI combustion. NOx emissions and efficiency are found to be a strong function of the engine operating parameters and soot emissions decrease with increasing fuel reforming due to a reduction in the mixing requirements of the diesel fuel. The impact of reformer composition is investigated by varying the syngas composition from 10% H2 to approximately 80% H2. The results of the investigation show that reformed fuel RCCI combustion is possible over a wide range of H2/CO ratios. Replacing CO with H2 resulted in a more reactive charge, decreased the combustion duration, and suppressed low temperature heat release. The suppression of low temperature heat release was explained through consumption of hydroxyl radicals by H2.

Keywords: Fuel reforming; RCCI combustion; Heat transfer; Efficiency; Low temperature chemistry (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:208:y:2017:i:c:p:1-11

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DOI: 10.1016/j.apenergy.2017.10.057

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