Patent ID: 7921829

Claim:
An engine cooling medium circulation device configured to circulate a cooling medium for an engine, comprising: a head internal cooling medium path formed inside a cylinder head; a block internal cooling medium path formed inside a cylinder block; a block cooling limitation section configured to be capable of limiting the passage of the cooling medium in the block internal cooling medium path in accordance with a temperature of the cooling medium; an EGR cooler that is placed in an EGR path, the EGR path is configured to be capable of introducing a gas from an exhaust path of the engine to an intake path, the EGR cooler is configured to be capable of cooling the gas by exchanging heat between the gas and the cooling medium, an EGR cooling control section configured to be capable of controlling the supply of the cooling medium to the EGR cooler; and a high-temperature coolant supply section that is configured to be capable of supplying the cooling medium, which has been warmed, to the EGR cooler at the time of a cold start.