The compensation value ensures that {TAIL ~ fuel injection} in the engine occurs over {HEAD ~ an appropriate timing} 
The compensation value ensures that { TAIL ~ fuel injection } in the engine occurs over { HEAD ~ an appropriate timing }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD