船用氨/氢燃料射流点火发动机预燃室喷孔参数影响研究

曾亚杰; 魏胜利; 严书哲; 于志清; 李元辰; 敖成成

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船用氨/氢燃料射流点火发动机预燃室喷孔参数影响研究

更新时间：2025-11-18

- 船用氨/氢燃料射流点火发动机预燃室喷孔参数影响研究
- Study on the Effect of Pre-Chamber Nozzle Parameters on the Performance of a Marine Ammonia/Hydrogen Fuel Jet Ignition Engine
- 西安交通大学学报 2025年
- 作者机构：
  
  1.江苏大学汽车与交通工程学院,江苏省镇江市212013
  2.哈尔滨工程大学动力与能源工程学院,黑龙江省哈尔滨市150001
- 作者简介：
  
  魏胜利，江苏大学汽车与交通工程学院教授、博士生导师，主要研究方向为动力机械高效清洁关键技术。先后获得大连理工大学博士学位，并赴美国康涅狄格大学燃烧诊断实验室访学。长期致力于氢氨等零碳燃料燃烧机理、燃料电池系统及高效能量转换等领域研究。近年来主持多项国家自然科学基金及省部级科研项目，在国际主流期刊发表学术论文数十篇。现任中国内燃机学会、国际燃烧学会等学术组织成员，并担任多个国际期刊审稿专家，在零碳燃料与清洁动力技术研究方面具有重要学术影响力。
- 基金信息：
  
  国家自然科学基金资助项目(52206148)
- DOI：
  中图分类号： TK432
- 收稿：2025-09-04，
  
  修回：2025-11-01，
  
  录用：2025-11-13，
- 稿件说明：
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曾亚杰, 魏胜利, 严书哲, 等. 船用氨/氢燃料射流点火发动机预燃室喷孔参数影响研究[J/OL]. 西安交通大学学报, 2025.

ZENG Yajie, WEI Shengli, YAN Shuzhe, et al. Study on the Effect of Pre-Chamber Nozzle Parameters on the Performance of a Marine Ammonia/Hydrogen Fuel Jet Ignition Engine[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2025.
曾亚杰, 魏胜利, 严书哲, 等. 船用氨/氢燃料射流点火发动机预燃室喷孔参数影响研究[J/OL]. 西安交通大学学报, 2025. DOI：

ZENG Yajie, WEI Shengli, YAN Shuzhe, et al. Study on the Effect of Pre-Chamber Nozzle Parameters on the Performance of a Marine Ammonia/Hydrogen Fuel Jet Ignition Engine[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2025. DOI：

摘要

针对主动射流点火系统中预燃室结构参数对射流和燃烧特性的影响规律尚未明晰的问题，构建了耦合RANS RNG湍流模型与氨/氢燃料化学反应动力学机理的船用射流点火发动机数值模型，探究了预燃室喷孔参数对预燃室内混合气发展过程的影响规律，阐明了不同喷孔参数影响下发动机的燃烧特性。研究结果表明：喷孔直径对预燃室混合气质量与射流能量传递效率影响显著，直径过小易因节流效应产生淬熄现象，直径过大会稀释混合气，降低燃烧效率；喷孔个数直接影响着射流火焰的传播与相互作用，过少时火焰传播不充分，过多则导致射流相互干扰、能量衰减与穿透速度下降；喷孔角过小或过大均会导致火焰分布不均或传播速度下降；对于本研究的预燃室结构，选取喷孔直径为3 mm、喷孔个数为8、喷孔夹角为140°的方案时，射流火焰能量最高，主燃室放热率峰值达22.7 kJ/°CA，燃烧效率最高。该研究可为船用发动机预燃室射流点火系统的优化设计提供理论依据及实际参考。

Abstract

To address the unclear influence of pre-chamber structural parameters on jet flow and combustion performance in the active jet ignition system

a numerical model of a marine ammonia-hydrogen jet ignition engine was established by coupling the RANS RNG turbulence model with a detailed chemical kinetics mechanism of ammonia-hydrogen fuel. The influence of pre-chamber nozzle parameters on the in-cylinder mixture development process was investigated

and the resulting variations in engine combustion characteristics under different nozzle configurations were analyzed in detail. Results show that nozzle diameter significantly affects mixture quality and jet energy transfer: small diameters induce quenching from throttling

while large diameters dilute the mixture and reduce combustion-efficiency. Nozzle number strongly affects flame propagation and interaction

with too few causing incomplete development and too many leading to jet interference and energy loss. Nozzle angle is also critical-either too small or too large angles deteriorate flame uniformity and slow down propagation. For the pre-chamber configuration studied

a 3 mm diameter with eight nozzles arranged at 140° achieved the highest jet energy

with a peak heat release rate of 22.7 kJ/°CA and maximum combustion efficiency. These findings offer both theoretical guidance and practical reference for optimizing pre-chamber jet ignition systems in marine engines.

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references

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