本文用数值模拟的方法研究了冷却空气在内外缸间的流量分配及其温度控制规则等问题，对快冷系统设计有一定参考意义。
Through numerical simulation, this paper studies the distribution of cooling air flow between inner-shell and outer-shell and the temperature control rule of cooling air.
恒温浴：容量，20l；形式，内外两层缸(双缸)。
In the constant temperature bath: capacity, 20l; form, the two outer layers cylinder (double).
作者在阅读了大量国内外关于柴油机减振降噪的研究文献后，结合公司的具体实验条件，对以YC 2108为代表的两缸柴油机进行振动控制研究。
Combining the experimental condition, the author aims to study the vibration of 2-cylinder diesel engine i. e. YC2108 after reading a lot of relevant scientific papers at home and abroad.
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