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