Patent ID: 8746187
Filing Date: 2014-06-10
Classification: F01P,F02F

Abstract:
1. An engine cooling apparatus comprising: an engine having a cylinder block having a cooling medium passageway in the periphery of a cylinder, a recess/projection portion capable of changing a thermal conductivity to a cooling medium in accordance with a change of a flow direction of the cooling medium being provided in the cooling medium passageway; a cooling capacity control valve capable of controlling a cooling capacity of a cylinder head of the engine; a flow direction changing valve capable of changing the flow direction of the cooling medium in the cooling medium passageway between a first direction and a second direction having a higher thermal conductivity due to the recess/projection portion; and a control unit for performing a control of suppressing the cooling capacity of the cylinder head by controlling the cooling capacity control valve and changing the flow direction of the cooling medium in the cooling medium passageway by controlling the flow direction changing valve when the operating conditions of the engine are low-speed, high-load conditions.