| 摘要 |
PROBLEM TO BE SOLVED: To stop boiling at relatively early stage, when an internal pressure of a low temperature cooling liquid circulation path rises more than the internal pressure of a high temperature cooling liquid circulation path, with the boiling of a coolant in the internal flow path of a supercharger at a dead soak.SOLUTION: An engine cooling device is capable of circulating a cooling liquid, independently and respectively, at a high temperature cooling liquid circulation path 20 for externally taking out and returning the cooling liquid of an engine 1 with a supercharger 2 and at a low temperature cooling liquid at a low temperature cooling liquid circulation path 30 for circulating the cooling liquid supplied to a water-cooled intercooler 31 for cooling a compressed intake air from the supercharger 2 and to an internal flow path 2a of the supercharger 2, respectively, wherein a passage 41 is provided for bringing the low temperature cooling liquid circulation path 30 into communication with the high temperature cooling liquid circulation path 20 when an internal pressure of a low temperature cooling liquid circulation path 30 rises more than the internal pressure of the high temperature cooling liquid circulation path 20. |
