An internal combustion engine 1, wherein the air fuel ratio controller changes the air fuel ratio according to a temperature of the internal combustion engine upon {HEAD ~ completion} of {TAIL ~ preheating} of the internal combustion engine 
of
An internal combustion engine 1 , wherein the air fuel ratio controller changes the air fuel ratio according to a temperature of the internal combustion engine upon { HEAD ~ completion } of { TAIL ~ preheating } of the internal combustion engine
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH