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