| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine cooling system capable of ensuring heater performance while suppressing an increase in an oil temperature of a transmission.SOLUTION: An internal combustion engine cooling system (50) comprises: a refrigerant-route switching device (60) capable of switching a state over between a first state and a second state, the first state being a state in which passing refrigerant that is refrigerant passing through an internal combustion engine (10) passes through a transmission route (90), a heater route (91), and a radiator route (92), and the second state being a state in which the passing refrigerant passes through the transmission route (90) and the radiator route (92) without passing through the heater route (90); and a control unit (80) controlling the refrigerant-route switching device (60) so as to switch the state over between the first state and the second state on the basis of an internal temperature of a cabin (6) and a set temperature of the cabin (6) if an oil temperature of a transmission (22) is equal to or higher than a predetermined value and an output request for a heater (30) is issued. |
