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本文简述了风冷柴油机双金属缸套传热机理,对气缸内瞬时放热系数的研究和现状作了介绍,提出一种计算沿缸套高度放热系数分布规律的方法。并以实测为基础,计算了风冷柴油机双金属缸套的稳定温度场与热流分布。 计算方法和结果可为同类机型的热负荷、热变形和热应力的研究提供依据。
In this paper, the heat transfer mechanism of air-cooled diesel engine bimetal cylinder liner is briefly introduced. The research and current status of instantaneous heat release coefficient in cylinder are introduced. A method to calculate the distribution rule of height exothermic coefficient along cylinder liner is presented. Based on the measured data, the steady temperature field and the heat flow distribution of the air-cooled diesel engine double metal cylinder liner were calculated. The calculation method and result can provide the basis for the research on thermal load, thermal deformation and thermal stress of similar models.