An apparatus for controlling {HEAD ~ ignition timing} in {TAIL ~ an internal combustion engine}, comprising: 
in
An apparatus for controlling { HEAD ~ ignition timing } in { TAIL ~ an internal combustion engine } , comprising :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH