| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device capable of appropriately cooling an internal combustion engine.SOLUTION: The device includes a circulation means 3 which can cool an internal combustion engine 2 by circulating cooling medium in the internal combustion engine 2, a detection means 4 which can detect a temperature of the cooling medium and a control means 5 which estimates the temperature of the cooling medium in a temperature estimation object position 7 having a temperature higher than the temperature detection position 6 by the detection means 4 on the basis of a change amount dthw/dt per unit time of a detected value thw of temperature by the detection means 4 and circulates the cooling medium by the circulation means 3 when the estimated value Tmax of the temperature is a specific value set in advance or higher. |
