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- Title
基于氢气/柴油 RCCI 燃烧的热效率与㶲损失联合优化.
- Authors
白金鹏; 常亚超; 李耀鹏; 贾明
- Abstract
With the shortage of petroleum resources, the increasingly stringent emission regulations and the proposal of the goal of carbon peak and carbon neutrality, the internal combustion engine urgently needs to achieve efficient and clean combustion. Therefore, the renewable carbon-free clean fuel hydrogen and the high-efficiency and low emission combustion mode reactivity controlled compression ignition (RCCI) have gradually become research hotspots. So the operating parameters are optimized for hydrogen/diesel RCCI combustion by coupling the KIVA-3V code with the non-dominated sorting genetic algorithm-Ⅱ (NSGA-Ⅱ). And the goal of optimization is to minimize both equivalent indicated specific fuel consumption (EISFC) and exergy destruction. Then, the influence law and causes of different initial parameters on exergy destruction are determined. The results indicate that EISFC and exergy destruction show an obvious trade-off relationship, which means that it is difficult to minimize EISFC and exergy destruction simultaneously. This is due to the nonmonotonic variation of EISFC with the combustion temperature. Based on the influence of chemical reaction path, combustion temperature and combustion duration on exergy destruction, increasing the premixed energy ratio and the proportion of the first injection of diesel can reduce exergy destruction.
- Subjects
INTERNAL combustion engines; CARBON offsetting; RATIO &; proportion; EXERGY; ENERGY consumption; HYDROGEN as fuel
- Publication
Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao, 2023, Vol 63, Issue 1, p32
- ISSN
1000-8608
- Publication type
Article
- DOI
10.7511/dllgxb202301005