Engine exhaust heat temperature detection device

An engine exhaust heat temperature detection device comprising:nan exhaust gas temperature detection sensor arranged at a predetermined position so as to not be directly exposed exhaust gas; andsaid predetermined position being arranged outside a muffler provided in an exhaust gas flow passage of an engine, or arranged outside an exhaust pipe constituting the exhaust gas flow passage on a more downstream side than the muffler in an exhaust direction, the sensor detecting that an atmosphere temperature at the predetermined position outside the muffler has reached a predetermined temperature based on an increase in a temperature inside the muffler, or detecting that an atmosphere temperature at the predetermined position outside the exhaust pipe has reached a predetermined temperature based on an increase in a temperature of an exhaust gas inside the exhaust pipe.

An engine exhaust heat temperature detection device comprising:nan exhaust gas temperature detection sensor located outside an exhaust gas conveying arrangement conveying the exhaust gas from an engine to an exhaust gas discharge opening; andsaid exhaust gas detection sensor being structured and arranged to detect a predetermined temperature of an atmosphere arranged outside of the exhaust gas conveying arrangement,wherein, when said atmosphere is heated to the predetermined temperature by the exhaust gas being conveyed within the exhaust gas conveying arrangement, the exhaust gas temperature detection sensor detects the predetermined temperature of the atmosphere.

An engine exhaust heat temperature detection device comprising:nan exhaust gas temperature detection sensor arranged outside each of:nan exhaust pipe; anda muffler;said exhaust gas temperature detection sensor being positioned so as to not be directly exposed to exhaust gas in the exhaust pipe and the muffler,wherein, when an atmosphere adjacent the exhaust gas temperature detection sensor is heated by the exhaust gas arranged within the exhaust pipe or the muffler, the exhaust gas temperature detection sensor indirectly detects a temperature of the exhaust gas by detecting a temperature of the atmosphere.