气候变化领域集成服务门户(CCPortal): Combustion and emission characteristics of a gasoline/ammonia fueled SI engine and chemical kinetic analysis of NOx emissions

CCPortal

DOI	10.1016/j.fuel.2024.131516
	Combustion and emission characteristics of a gasoline/ammonia fueled SI engine and chemical kinetic analysis of NOx emissions
	Liu, Shang; Lin, Zhelong; Qi, Yunliang; Lu, Guoxiang; Wang, Bo; Li, Li; Wang, Zhi
发表日期	2024
ISSN	0016-2361
EISSN	1873-7153
起始页码	367
卷号	367
英文摘要	Mitigating climate change involves the greater adoption of carbon - neutral and renewable energy sources within the transportation sector. Ammonia (NH 3 ), as a carbon-free and sustainable fuel, has garnered growing interest in recent years. The present study aims to investigate the impact of NH 3 blending on combustion and emission characteristics of a stoichiometric spark-ignition gasoline engine, with a particular emphasis on nitrogen-based emissions. The experimental investigation was complemented by chemical kinetic calculations. The results showed that NH 3 blending could effectively suppress engine knock, optimize combustion phase and improve thermal efficiency. For pure gasoline, advancing the spark timing resulted in increased NO x emissions. However, when NH 3 was blended, NO x emissions decreased with advancing spark timing, indicating a negative correlation with pressure. The NH 3 emission was attributed to the 'crevice mechanism ' as well as the absorption/desorption in the lubricant oil film on the cylinder wall. Chemical kinetic analysis revealed that the NO x emission from NH 3 blended combustion is closely related to reactive radicals such as OH, H and O. The reduction in NO x emissions under high-pressure conditions was primarily attributed to the consumption of these reactive radicals via threebody reactions. Interestingly, NO x emissions initially increased with increasing NH 3 blending ratio but eventually followed a decreasing trend. This can be attributed to the lower combustion temperature, lower concentration of reactive radicals, and enhanced de-NO x reactions.
英文关键词	Ammonia-gasoline combustion; NO x emission; NH 3 emission; Chemical kinetic analysis
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:001222320400001
来源期刊	FUEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297821
作者单位	Tsinghua University; BYD; Xi'an Jiaotong University City College; Xi'an Jiaotong University
推荐引用方式 GB/T 7714	Liu, Shang,Lin, Zhelong,Qi, Yunliang,et al. Combustion and emission characteristics of a gasoline/ammonia fueled SI engine and chemical kinetic analysis of NOx emissions[J],2024,367.
APA	Liu, Shang.,Lin, Zhelong.,Qi, Yunliang.,Lu, Guoxiang.,Wang, Bo.,...&Wang, Zhi.(2024).Combustion and emission characteristics of a gasoline/ammonia fueled SI engine and chemical kinetic analysis of NOx emissions.FUEL,367.
MLA	Liu, Shang,et al."Combustion and emission characteristics of a gasoline/ammonia fueled SI engine and chemical kinetic analysis of NOx emissions".FUEL 367(2024).