OVERCOOLING PREVENTION MEMBER OF CYLINDER BORE WALL, AND INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide an overcooling prevention member of a cylinder bore wall, which enhances the uniformity of wall temperature of the cylinder bore wall and is easily insertable in a groove-like cooling water flow passage around the cylinder bore wall, and to provide an internal combustion engine.SOLUTION: An overcooling prevention member is installed in a groove-like cooling water flow passage formed around the cylinder bore wall of a cylinder block of an internal combustion engine and has a contact surface 1 which swells through contact with cooling water of 70°C or more and contacts with the wall surface on a groove-like cooling water flow passage side of the cylinder bore wall.