Such a drive train controller includes, on the one hand, an engine and {HEAD ~ an engine controller} by {TAIL ~ means} of which variables which influence the engine torque, for example the ignition timing and the metering of fuel to the cylinders, are controlled 
by
Such a drive train controller includes , on the one hand , an engine and { HEAD ~ an engine controller } by { TAIL ~ means } of which variables which influence the engine torque , for example the ignition timing and the metering of fuel to the cylinders , are controlled
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH