Comprehensive numerical investigation of biodiesel/natural gas dual-fuel compression ignition engine with hydrogen and oxygen enrichment

被引：0
作者：
Yahyaei, S. M. Javad [1 ]
Gharehghani, Ayat [1 ]
Andwari, Amin Mahmoudzadeh [2 ]
机构：
[1] Iran Univ Sci & Technol, Sch Mech Engn, Tehran, Iran
[2] Univ Oulu, Fac Technol, Machine & Vehicle Design MVD, Mat & Mech Engn, FI-90014 Oulu, Finland
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2025年 / 98卷
关键词：
Biodiesel; Natural gas; Hydrogen-enriched; Oxy-fuel; Dual-fuel engine; EMISSIONS CHARACTERISTICS; INJECTION PRESSURE; NATURAL-GAS; COMBUSTION; DIESEL; PERFORMANCE; EFFICIENCY; LOAD; IMPROVEMENT; PARAMETERS;
D O I：
10.1016/j.ijhydene.2024.12.064
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Biodiesel offers several advantages over conventional diesel, including a higher cetane number and inherent oxygen content, while natural gas, due to its abundance and lower emissions, serves as a promising alternative fuel for dual-fuel engines. This numerical study investigates a dual-fuel engine powered by biodiesel and natural gas, with hydrogen and oxygen enrichment levels ranging from 3% to 12% and 3%-30%, respectively using Converge software. The results demonstrate that the addition of 12% hydrogen (share energy) leads a significant reduction in unburned hydrocarbon emissions by 40%, and lowers carbon monoxide levels. Also, the burning interval decreases from 15.2 to 9.4 CA with the increase of hydrogen. Furthermore, hydrogen enrichment of 12% increases thermal efficiency from 47.3% to 47.9%. Moreover, increasing oxygen concentration from 3% to 30% leads to a 75% reduction in unburned hydrocarbons and a 60% decrease in soot formation. The ignition delay is also shortened from 10.5 degrees CA to 9.3 degrees CA. Moreover, the indicated mean effective pressure exhibited a modest improvement of 1.1%.
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收藏
页码：254 / 265
页数：12
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