Patent ID: 8807095
Filing Date: 2014-08-19
Classification: F01P

Abstract:
1. An engine cooling device comprising: an engine provided with a cylinder block, a cylinder head, and a cooling medium flow passage which is a single system as a whole and which causes a cooling medium to flow from the cylinder block to the cylinder head, wherein a switching portion that is provided to at least one of the inner paths, and permits or prohibits flow of the cooling medium through based on a pressure of the cooling medium which is a state quantity that is used for estimating an increase in the temperature of the cylinder, a cooling medium pressure-feeding portion to change the flow rate of the cooling medium that is pressure-fed, and a control portion that controls the cooling medium pressure-feeding portion to increase the flow rate of the cooling medium pressure that is pressure-fed as the temperature of the cylinder head increases, based on the temperature of the cylinder head.