船用氨燃料喷射器喷射特性仿真研究
Simulationstudyoninjectioncharacteristicsofmarineam-moniafuelinjector
氨燃料作为船舶发动机领域的新兴燃料，其燃油喷射系统的关键技术亟需突破。本文对氨燃料喷射器喷射性能开展研究，基于一维仿真模型考虑燃料流动过程中的非等温可压缩性，进行了氨燃料喷射器各个特性影响的关键参数的影响计算并进行量化分析，获取各个特征结构对喷射性能的作用机理。研究表明：对于喷射量，喷孔直径、柱塞直径、进油孔的影响权重最大，分别占38.6%、30.3%、9.6%。对于针阀开启响应，针阀最大升程，柱塞直径，回油孔的影响权重最大，分别为38.7%、19.4%、17.4%。对于针阀关闭响应，柱塞直径影响权重65.3%，其次是进油孔直径、针阀最大升程，分别为7.3%、5.9%。对于压力波动，柱塞直径、喷孔孔径、进油孔孔径影响权重最大，分别为34.4%、31.8%、9.2%。对于盛油腔温度，喷孔孔径、柱塞直径、电磁阀预紧力影响权重最大，分别为46.5%、23.5%、7.6%。
As an emerging fuel in the field of ship engine, Ammonia fuel urgently needs breakthroughs in the key technology of its fuel injection system. This article studies the injection performance of ammonia fuel injectors. Based on the one-dimensional simulation model, The non-isothermal compressibility of fuel flow is considered. The impact of key parameters on various characteristics of ammonia fuel injectors is quantitatively analyzed to obtain the mechanism of each characteristic structure on injection performance. The research shows that for injection quantity, the impactt weights of nozzle diameter, plunger diameter, and inlet orifice are the largest, accounting or 38.6%, 30.3%, and 9.6% respectively.For needle valve opening response, the impactt weights of needle valve maximum lift, plunger diameter, and return orifice are the largest, accounting for 38.7%, 19.4%, and 17.4%, respectively. For needle valve closing response, the impactt weight of plunger diameter is 65.3%, followed by inlet or if iceem diameter and needle valve maximum lift, accounting for 7.3% and 5.9%, respectively. For pressure fluctuation, the impact weights of plunger diameter, nozzle aperture, and inlet orifice aperture are the largest, accounting for 34.4%, 31.8%, and 9.2% respectively. For fuel tank temperature, the impact weights of nozzle aperture, plunger diameter , and solenoid valve pre-tightening force are the largest, accounting for 46.5%, 23.5%, and 7.6%, respectively.
李美斯;礼博;范立云;毛运涛;魏云鹏;
哈尔滨工程大学 动力与能源工程系,51000;哈尔滨工程大学 动力与能源工程系,51000;哈尔滨工程大学 动力与能源工程系,51000;哈尔滨工程大学 动力与能源工程系,51000;哈尔滨工程大学 动力与能源工程系,51000;
TK46+4
ammonia injectors injection characteristics structural features quantitative analysis
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