| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an internal combustion engine with high homogeneity of wall temperature of a cylinder bore wall. <P>SOLUTION: The heat retaining structure 1a for a cylinder bore wall installed in a groove-like cooling water channel of a cylinder block of an internal combustion engine comprises a fixed plate 21, a frame member 22 fixed on the fixed plate 21 and having a cylinder bore wall contacted surface 19 contacted on the wall surface of the cylinder bore wall on the groove-like cooling water channel side for surrounding the periphery of a cooling water storage part, or a closely contacted member fixed on the fixed plate 21 and having a cylinder bore wall contacted surface contacted with the wall surface of the cylinder bore wall on the groove-like cooling water channel side for covering the entirety of the heat retaining portion of the wall surface of the cylinder bore wall, an elastic member 24 for energizing the fixed plate 21 to the cylinder bore wall direction, and a temperature deformable member 23 to make the fixed plate 21 move in a direction away from the cylinder bore wall in the case the temperature of the cooling water is raised. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
