A fuel injector is positioned along the side of the engine and arranged to deliver {HEAD ~ fuel} into {TAIL ~ air} flowing through the passage 
into
A fuel injector is positioned along the side of the engine and arranged to deliver { HEAD ~ fuel } into { TAIL ~ air } flowing through the passage
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