ENGINE COOLING SYSTEM

摘要

An engine cooling system includes a cylinder head, a first cooling chamber which surrounds at least the intermediate part of a combustion chamber facing the cylinder head, and a second cooling chamber which surrounds the cylinder head-side end of the combustion chamber. A first cooling liquid is circulated between the first cooling chamber and a heat radiator by a circulation device. A second cooling liquid having a lower temperature than the first cooling liquid is supplied to the second cooling chamber through a supply line, and the second cooling liquid is discharged from the second cooling chamber through a discharge line.