| 大功率柴油机进气涡流与燃烧室优化匹配的多维仿真研究 |
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| 引用本文： | 赵鹏,李国岫,虞育松.大功率柴油机进气涡流与燃烧室优化匹配的多维仿真研究[J].兵工学报,2010,31(6):657-662. |
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| 作者姓名： | 赵鹏 李国岫 虞育松 |
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| 作者单位： | 北京交通大学,机械与电子控制工程学院,北京,100044;北京交通大学,机械与电子控制工程学院,北京,100044;北京交通大学,机械与电子控制工程学院,北京,100044 |
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| 基金项目： | 国家自然科学基金资助项目，新世纪优秀人才支持计划资助 |
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| 摘 要： | 为了得到柴油机进气涡流与燃烧室口径比、燃烧室形状的匹配关系及其对缸内气体流动和混合气形成的影响,对某型大功率柴油机进气涡流与燃烧室的优化匹配进行了多维仿真研究。研究结果表明:进气涡流与燃烧室进行优化匹配,能显著地提高柴油机的动力性;随着燃烧室口径比的增大,最优匹配的涡流比也相应增大,当口径比为0.8时,指示功率最高;对于油束撞壁情况,进气涡流主要影响燃油蒸气在燃烧室壁面附近的分布情况;对于油束未撞壁的情况,进气涡流影响相邻油束之间的干涉和燃油蒸气的空间分布;不同的燃烧室形状应匹配不同的涡流比,在几类燃烧室中,缩口燃烧室匹配的涡流比最大,其动力性也最好;随着涡流比的增大,燃油蒸气区的流场加强,影响燃油蒸气的输运及燃烧特性。
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| 关 键 词： | 机械设计 柴油机 进气涡流 燃烧室 口径比 优化匹配 |
Multi-dimensional Simulation for Optimization Matching of Intake Swirl and Combustion Chamber in Diesel Engine |
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| ZHAO Peng,LI Guo-xiu,YU Yu-song.Multi-dimensional Simulation for Optimization Matching of Intake Swirl and Combustion Chamber in Diesel Engine[J].Acta Armamentarii,2010,31(6):657-662. |
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| Authors: | ZHAO Peng LI Guo-xiu YU Yu-song |
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| Affiliation: | (School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | In order to obtain matching relationship among intake swirl,combustion chamber's calibre ratio and shape,optimization matching of intake swirl and combustion chamber geometry was studied by using three-dimensional CFD software.The matching relationship that effects air flow and mixture formation in diesel engine was analyzed also.The results show that the optimization matching of intake swirl and combustion chamber can significantly improve power performance.The optimal matching swirl ratio increases with t... |
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| Keywords: | mechanical design diesel engine intake swirl combustion chamber calibre ratio optimization matching |
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