Effect of Syngas Composition on the Combustion and Emissions Characteristics of a Syngas/Diesel RCCI Engine

Energies

Ali Saberi Mehr¹  Mortaza Yari²  Navid Kousheshi²  GermanF. de la Fuente³  Amin Paykani⁴ 

[1] Faculty of Mechanical Engineering, University of Bonab, Bonab 5551761167, Iran;Faculty of Mechanical Engineering, University of Tabriz, Tabriz 5166616471, Iran;Instituto de Ciencia de Materiales de Aragón (Universidad de Zaragoza-CSIC), María de Luna 3, 50018 Zaragoza, Spain;School of Engineering and Computer Science, University of Hertfordshire, Hatfield AL10 9AB, UK;

关键词: rcci engine;    syngas;    combustion;    emissions;    exergy;   

DOI  :  10.3390/en13010212

来源: DOAJ

【 摘 要 】

Reactivity controlled compression ignition (RCCI) strategy uses two different fuels with different reactivities which provides more control over the combustion process and has the potential to dramatically lower combustion temperature and NO_X and PM emissions. The objective of the present study is to numerically investigate the impact of syngas composition on the combustion and emissions characteristics of an RCCI engine operating with syngas/diesel at constant energy per cycle. For this purpose, different syngas compositions produced through gasification process have been chosen for comparison with the simulated syngas (mixture of hydrogen and carbon monoxide). The results obtained indicate that using syngas results in more soot, CO and UHC emissions compared with simulated syngas. Even though more NO_X reduction can be achieved while operating with syngas, the engine could suffer from poor combustion and misfire at low loads due to the presence of nitrogen in the mixture. In terms of exergy, both syngas mixtures lead to more exergy destruction by the increase of syngas substitution. Nevertheless, the magnitude of exergy destruction for simulated syngas is less than the normal syngas.

【 授权许可】

Unknown