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