In the above case, the air fuel ratio of {TAIL ~ the internal combustion engine} that is preheated upon or before starting thereof is set to a value higher than {HEAD ~ the air fuel ratio} of the internal combustion engine that is not preheated 
In the above case , the air fuel ratio of { TAIL ~ the internal combustion engine } that is preheated upon or before starting thereof is set to a value higher than { HEAD ~ the air fuel ratio } of the internal combustion engine that is not preheated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH