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