{HEAD ~ An engine torque} of {TAIL ~ a combustion engine} 2, in which an efficiency characteristic can be selected from those in a lean state and in a stoichiometric state, and a motor torque of a generator/motor 3 are transmitted to a driving output system as a driving torque 
{ HEAD ~ An engine torque } of { TAIL ~ a combustion engine } 2 , in which an efficiency characteristic can be selected from those in a lean state and in a stoichiometric state , and a motor torque of a generator / motor 3 are transmitted to a driving output system as a driving torque
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH