ガソリンエンジンヘッドの熱解析

概要

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For the evaluation of the heat flow in the cylinder heads of automotive gasoline engines, thermal boundary conditions were measured and then the heat flows were analyzed by the FEM. The model used for the analysis was half of the second cylinder head in a 1600cm^3, 4-cylinder, in-line gasoline engine. The heat flux from the combustion chamber to the coolant, obtained by cycle simulations with Eichelberg's heat transfer expression, agreed well with measured values. The heat transfer coefficient on the coolant side was found to be in proportion to the 0.25 power of the water flow rate because of forced convective and boilling heat transfer phenomena. The heat flow distribution and surface temperature of the combustion chamber were analyzed using multiple regression functions of the measured results.
社団法人日本機械学会の論文
1992-02-25