At the same time, the injector is arranged to deliver fuel to {TAIL ~ the incoming air} in a manner which promotes mixing of the air and fuel for {HEAD ~ combustion} 
At the same time , the injector is arranged to deliver fuel to { TAIL ~ the incoming air } in a manner which promotes mixing of the air and fuel for { HEAD ~ combustion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD