In a second embodiment, the fuel injector is positioned between the air delivery passage and {HEAD ~ the side} of {TAIL ~ the engine} 
In a second embodiment , the fuel injector is positioned between the air delivery passage and { HEAD ~ the side } of { TAIL ~ the engine }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL