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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Imprimer: 2150-3621
ISSN En ligne: 2150-363X

International Journal of Energy for a Clean Environment

Précédemment connu sous le nom Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2020031254
pages 25-39

EFFECT OF LOAD ON COMBUSTION CYCLIC VARIATION IN CNG/DIESEL DUAL-FUEL ENGINE

Dong Tang
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Ning Liu
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Jiawei Wang
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Cen Zhao
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Fuqiang Luo
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China

RÉSUMÉ

In this paper, analysis on combustion cyclic variation of different loads in compressed natural gas (CNG)/diesel dual-fuel engine was carried out. It is found that under high-speed conditions, when the load increased from 25% to 100%, the indicated mean effective pressure (IMEP) decreased by 19.5%, and the cyclic variation coefficient of IMEP increased by 298.4%. The maximum cylinder pressure (Pmax) and its cyclic variation both increased with load, and the coefficient of cyclic variation of Pmax is large at low speeds. The rise rate of maximum pressure and its cyclic variations both increased and then decreased, and the rise rate of maximum pressure reaches the maximum at 75% load.

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