| 涡流控制阀对四气门汽油机缸内空气运动影响的研究 |
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| 引用本文： | 李玉峰,刘书亮,许振忠,宫卫东,史绍熙.涡流控制阀对四气门汽油机缸内空气运动影响的研究[J].工程热物理学报,1999(5). |
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| 作者姓名： | 李玉峰 刘书亮 许振忠 宫卫东 史绍熙 |
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| 作者单位： | 天津大学内燃机燃烧学国家重点实验室!天津300072 |
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| 基金项目： | 国家八五攀登计划，国家自然科学基金 |
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| 摘 要： | 在一台单缸四气门汽油机上，用激光多普勒测速仪实验研究了涡流控制阀打开和关闭后，缸内平均速度、湍流强度和湍流结构的变化．结果表明：当涡流控制阀打开时，在压缩后期缸内流动主要是滚流的畸变和破碎过程，而当涡流控制阀关闭后，在压缩后期缸内流动主要是涡流运动．两种情况下的湍流强度和湍流结构也有较大差别．
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| 关 键 词： | 涡流 滚流 湍流 四气门汽油机 |
THE EFFECT OF SWIRL CONTROL VALVE ON AIR MOTION IN CYLINDER OF A FOUR-VALVE SI ENGINE |
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| LI Yufeng, LIU Shuliang, XU Zhenzhong, SHI Shaca-Xi, GONG Weidong.THE EFFECT OF SWIRL CONTROL VALVE ON AIR MOTION IN CYLINDER OF A FOUR-VALVE SI ENGINE[J].Journal of Engineering Thermophysics,1999(5). |
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| Authors: | LI Yufeng LIU Shuliang XU Zhenzhong SHI Shaca-Xi GONG Weidong |
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| Abstract: | In this paper, mean velocity, turbulence intensity and turbulence structure in the cylinder of a single cylinder four-valve spark ignition engine were studied by LDA measuremeat at two cases of opening and closing the Swirl Control Valve which was equipped in one of inlet ports. The results show that in-cylinder bulk flow near the end of compression is mainly the process of tumble distortion and breakup when SCV opens. When SCV closes, however,strong swirl motion holds up to the end of compression. TUrbulence intensity and turbulence structure at both cases are greatly different. |
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| Keywords: | tumble swirl turbulence four-valve spark ignition engine |
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