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首页> 外文会议>American Society of Mechanical Engineers(ASME) Internal Combustion Engine Division Fall Technical Conference; 20050911-14; Ottawa(CA) >NUMERICAL ANALYSIS OF FLOW CHARACTERISTICS IN A SWIRL CHAMBER TYPE DIESEL ENGINE DEPENDING ON PASSAGE HOLE TYPE
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NUMERICAL ANALYSIS OF FLOW CHARACTERISTICS IN A SWIRL CHAMBER TYPE DIESEL ENGINE DEPENDING ON PASSAGE HOLE TYPE

机译：旋流式柴油机通道孔型流动特性的数值分析。

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摘要

In a swirl chamber type diesel engine, a strong swirl is produced inside the swirl chamber during the compression stroke. By spraying the fuel into this chamber and thus forming a good mixture, the engine can obtain excellent combustion even at high speeds. Therefore, swirl chamber type diesel engines are favorable for high-speed operations, and because they can produce high power from a small size, they are used often for small, high-speed diesel engine applications. In order to simultaneously realize a reduction in harmful emissions and improvement in fuel consumption of the swirl chamber type diesel engine, reduction of the mixture formation period and complete combustion must be pursued; an optimum combustion chamber to achieve these tasks must first be designed. In this experiment, the effects of the area and the angle of the passage hole, which are the primary design factors of the swirl chamber type diesel engine, on the engine's turbulent flow will be investigated. Using the commercial numerical analysis program the passage hole area and angle will be varied to analyze the intake and compression stages.
机译：在涡旋室型柴油机中，在压缩冲程期间在涡旋室内产生强涡旋。通过将燃油喷入该腔室并形成良好的混合气，即使在高速行驶时，发动机也能获得出色的燃烧效果。因此，涡流室型柴油机对于高速运转是有利的，并且由于它们可以从小尺寸产生高功率，因此它们经常用于小型高速柴油机应用中。为了同时减少有害排放物并改善涡流室型柴油机的燃料消耗，必须追求缩短混合气形成时间和完全燃烧。首先必须设计出实现这些任务的最佳燃烧室。在本实验中，将研究涡流室式柴油机的主要设计因素通孔的面积和通孔角度对发动机湍流的影响。使用商业数值分析程序，可以改变通孔的面积和角度，以分析进气和压缩阶段。

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