Structure for retaining temperature sensing device and internal combustion engine provided with same

A retaining structure for a temperature detection device, comprising:

• a resin cooling medium circulation part forming a portion of a circulation path for circulating a cooling medium for cooling an engine body;
• an attachment part retaining the temperature detection device for sensing the temperature of the cooling medium flowing through the circulation path, so that a temperature sensing part of the temperature detection device protrudes into the circulation path, the attachment part being a material capable of transmitting heat from the engine body to the temperature detection device, and being attached to the resin cooling medium circulation part such that a portion of the attachment part is configured to contact the engine body,
• the attachment part having an abutting part configured to abut the engine body and position the cooling medium circulation part with respect to the engine body,
• the abutting part being configured to be fixed to the engine body, such that opposing surfaces of the engine body and the abutting part contact and form a recess on a side of the engine body, and
• the abutting part protruding from the resin cooling medium circulation part and being configured to be inserted in the recess formed on the side of the engine body, thereby positioning the resin cooling medium circulation part with respect to the engine body;
• and
• a rib part disposed in the circulation path, the rib part configured to connect an area of a combustion chamber formed in the engine body and an area of a portion abutted by the attachment part.