预燃室内氢喷射参数对氨内燃机燃烧的影响

doi:10.13229/j.cnki.jdxbgxb.20240533

摘要/Abstract

摘要：

基于1台排量2.2 L且配置主动预燃室的氨燃料内燃机，以氢气作为引燃燃料，采用数值模拟方法分析了不同氢气喷射参数对燃烧性能的影响。结果表明：与喷射脉宽相比，氢气喷射压力和喷射结束时刻对燃烧性能的影响更大，尤其是在燃烧持续期的CA10-CA50阶段。本文研究成果可为氨氢内燃机喷射策略的设计提供参考。

关键词: 氨内燃机, 主动预燃室, 氢气喷射, 喷射参数

Abstract:

Based on a 2.2 L ammonia-fueled internal combustion engine equipped with an active pre-chamber， hydrogen was used as the pilot fuel， and the effects of different hydrogen injection parameters on combustion performance were analyzed via numerical simulation. The results indicate that compared with injection pulse width， hydrogen injection pressure and injection end timing have a more significant impact on combustion performance， particularly during the CA10-CA50 phase of the combustion duration. The research findings can provide a reference for the design of injection strategies for ammonia-hydrogen internal combustion engines.

Key words: ammonia internal combustion engine, active pre-chamber, hydrogen injection, injection parameters

中图分类号:

TK431

张孚,陈海娥,李骏,胡昱,王磊. 预燃室内氢喷射参数对氨内燃机燃烧的影响[J]. 吉林大学学报(工学版), 2025, 55(12): 3804-3813.

Fu ZHANG,Hai-e CHEN,Jun LI,Yu HU,Lei WANG. Influence of hydrogen injection parameters in pre⁃chamber on combustion characteristics of ammonia fueled internal combustion engines[J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(12): 3804-3813.

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参数	数值
排量/L	2.2
缸径/mm	130
行程/mm	166
进气门开启角度/°CA ATDC	-377
进气门关闭角度/°CA ATDC	-196
转速/（r·min^-1）	600

边界	设置值
进口	压力、温度
出口	压力、温度
缸盖	358 K
活塞	347 K
缸套	321 K
预燃室顶部	400 K
预燃室中部	580 K
预燃室底部	700 K

方案	喷射压力/MPa	喷射结束时刻/ ℃A ATDC	喷射脉宽/℃A	喷射量/mg
1-4	2	-160、-120、-80、-50	18	9
5-8	2	-160、-120、-80、-50	11	5.4
9-12	2	-160、-120、-80、-50	25	12.6
13-16	2	-160、-120、-80、-50	36	18
17-20	1	-160、-120、-80、-50	25	6.3
21-24	1.5	-160、-120、-80、-50	25	9.45
25-28	2.5	-160、-120、-80、-50	25	15.75