| 二冲程汽油机扫气过程多维数值模拟 |
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| 引用本文： | 刘兵,杨迪. 二冲程汽油机扫气过程多维数值模拟[J]. 西安交通大学学报, 1999, 33(1): 69-72,101 |
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| 作者姓名： | 刘兵 杨迪 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 摘 要： | 为揭示二冲程汽油机扫气过程的特点，对倒拖工况下二冲程汽油机的气缸，扫气道和排气道内的流场进行了多维数值模拟，计算结果与实验结果表明，曲轴箱与排气道之间的压差对扫气道的流速有决定性的影响。计算发现，在扫气过程中出现双环涡和滚涡，且滚涡一直持续到上止点附近。
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| 关 键 词： | 流场模拟 二冲程内燃机 扫气 汽油机 数值模拟 |
Simulation Model for a Loop-Scavenged Two-Stroke Engine |
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| Liu Bing,Yang Di. Simulation Model for a Loop-Scavenged Two-Stroke Engine[J]. Journal of Xi'an Jiaotong University, 1999, 33(1): 69-72,101 |
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| Authors: | Liu Bing Yang Di |
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| Abstract: | Calculations are made to analyze the flow field for the engine cylinder, transfer pipes and eshaust pipe of a loop scavenged engine. Result shows the pressure difference between the crank case and the exhaust pipe has a definite influence on the flow field of the transfer pipe. A pair of toroidal vortex and tumble vortex are found in the cylinder during the scavenging process. And the tumble vortex is maintained up to the nearly top dead center. |
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| Keywords: | flow filed simulation two stroke internal combustion engine scavening |
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