Exhaust gas recirculation device and exhaust gas recirculation method for internal combustion engine

An exhaust gas recirculation method for an internal combustion engine, the exhaust gas recirculation method being executed by processing circuitry, the method comprising:

• introducing some of exhaust gas of the internal combustion engine into an intake passage of the internal combustion engine as an EGR gas by causing the exhaust gas to pass through the EGR passage;
• and using an EGR cooler provided in the EGR passage, thereby performing heat exchange between coolant of the internal combustion engine and the EGR gas, an EGR valve is provided in a section of the EGR passage that is between the intake passage and the EGR cooler, wherein the EGR valve includes a displaceable valve body and a temperature sensitive portion with which the EGR gas comes into contact, an EGR gas temperature is a temperature of the EGR gas in contact with the temperature sensitive portion of the EGR valve, wherein the temperature sensitive portion is disposed in a section downstream of the displaceable valve body in a flow direction of the EGR gas, and wax is sealed inside the temperature sensitive portion, and the displaceable valve body opens the EGR valve when the EGR gas temperature is higher than a prescribed temperature, and wherein the displaceable valve body includes a through-hole in which some of the EGR gas can pass while the displaceable valve body is closed.