Liquid ammonia spray flame with pre-chamber turbulent jet ignition

IF 5.9 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2026-05-01 Epub Date: 2026-03-05 DOI:10.1016/j.combustflame.2026.114913

Lei Zhou , Haoran Xi , Lijia Zhong , Wanhui Zhao , Haiqiao Wei

引用次数: 0

Abstract

Previous studies employed the high-reactivity fuels to ignite the ammonia via a dual fuel injection strategy for compression ignition (CI) engines. However, there are still bottleneck problems. Therefore, the objective of this letter is to demonstrate a promising alternative method to achieve pre-chamber turbulent jet flame inducing liquid ammonia spray flame (PC-LASF). The effect of mixture reactivity in PC and injection timing on the ignition and propagation of liquid ammonia spray flame is investigated in a constant-volume chamber. The results have proven the feasibility of PC-LASF method and a stable ammonia spray flame with a two-stage combustion phenomenon is successfully achieved. The increase of hydrogen amount in pre-chamber will enhance the jet intensity. Two ignition modes, including the high-temperature jet flame and thermal atmosphere, are performed by precisely controlling the ammonia injection timing or ignition timing.

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预室湍流喷射点火液氨喷雾火焰

以往的研究采用高反应性燃料对压缩点火（CI）发动机进行双喷油点火。但仍存在瓶颈问题。因此，这封信的目的是展示一种有前途的替代方法来实现预室湍流射流火焰诱导液氨喷雾火焰（PC-LASF）。在定容室中研究了PC混合液的反应性和喷射时间对液氨喷雾火焰点火和传播的影响。结果证明了PC-LASF方法的可行性，并成功地获得了稳定的两级燃烧氨喷雾火焰。预室氢气量的增加会增强射流强度。通过精确控制喷氨时间或点火时间，实现了高温喷射火焰和热气氛两种点火方式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.