The present invention relates to an art of {HEAD ~ control} of {TAIL ~ an engine} having a variable series supercharging system 
of
The present invention relates to an art of { HEAD ~ control } of { TAIL ~ an engine } having a variable series supercharging system
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH