王艳华,杨世春,高峰,苏铁熊,董小瑞.汽油缸内多孔直喷喷雾破碎模型建立与试验[J].农业机械学报,2013,44(3):12-16. Wang Yanhua,Yang Shichun,Gao Feng,Su Tiexiong,Dong Xiaorui.Spray Break-up Model Establishment and Experiment of Multi-hole Injector on Gasoline Direct Injection Engine[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(3):12-16.
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汽油缸内多孔直喷喷雾破碎模型建立与试验 [下载全文] |
Spray Break-up Model Establishment and Experiment of Multi-hole Injector on Gasoline Direct Injection Engine [Download Pdf][in English] |
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DOI:10.6041/j.issn.1000-1298.2013.03.003 |
中文关键词: 缸内直喷汽油机 多孔喷油器 破碎模型 粒径分布函数 |
基金项目:国家自然科学基金资助项目(50606014) |
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中文摘要:为了建立汽油缸内多孔直喷喷雾破碎模型,对Huh Gosman模型进行分析评估,并且以喷油压力为参数,建立初始破碎粒径分布公式,从而建立了汽油缸内多孔直喷喷雾破碎模型;并通过定容喷雾试验进行了汽油自由喷雾试验,验证所建模型的合理性。研究结果发现:以经验公式估计的初始液滴直径评估Huh Gosman模型,模拟结果贯穿度偏小;通过建立初始破碎粒径分布函数,同时对Huh Gosman模型进行修正,模拟计算结果与实际结果相近。最后利用该模型对不同喷油压力下的自由喷雾进行模拟,计算与试验结果吻合较好,最大误差小于5%。 |
Wang Yanhua Yang Shichun Gao Feng Su Tiexiong Dong Xiaorui |
North University of China;Beihang University;Beihang University;Beihang University;North University of China;North University of China |
Key Words:Gasoline direct injection engine Multi-hole injector Spray break-up model Particle size distribution function |
Abstract:In order to establish spray break-up model of multi-hole injection on gasoline direct injection engine, Huh Gosman model was analyzed and evaluated. The primary break-up particle size distribution formula was built based on injection pressure. The spray break-up model was built for gasoline direct injection in cylinder. Finally, by establishing the capacity spray experiments, gasoline free spray experiments were carried out to verify the rationality of the model. It is found that estimating initial droplet size by experience formula to evaluate second break-up model, the spray penetration calculated with Huh Gosman model is smaller than experimental results. Through establishing primary break-up particle size distribution formula and modifying Huh Gosman model, the simulation results and the practical results are close to each other. At last, free spray under different injection pressure were simulated with above established models. Results matches well with the experimental results and the maximum average error is less than 5%. |
Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.
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