Internal combustion engine cooling system

Abstract

To provide an internal combustion engine cooling system capable of improving a cooling performance in the case of the temperature of a coolant flowing in a radiator being high.SOLUTION: An internal combustion engine cooling system includes: a first channel connected to a radiator for cooling a coolant of the internal combustion engine; a second channel connected to a first cooling device being different from the radiator; a temperature detection part for detecting a temperature of the first channel; a flow control valve, connected to the first and second channels, for controlling a flow rate of the coolant to each channels by controlling an opening degree of each channel; and a control device for executing valve closing control to move the flow control valve toward closing the second channel while fully opening the first channel by moving the flow control valve in a case where a temperature detected by the temperature detection part is equal to or higher than a given value when the second channel is open.SELECTED DRAWING: Figure 1

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