an arrangement for evaluating at least one actual value of {HEAD ~ a variable} characterizing {TAIL ~ a combustion} in at least one combustion chamber of the engine 
characterizing
an arrangement for evaluating at least one actual value of { HEAD ~ a variable } characterizing { TAIL ~ a combustion } in at least one combustion chamber of the engine
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH