Consequently, time when the closing timing of the intake valve 8 is in the predetermined range T1 including the bottom dead center at {HEAD ~ a transition period} of switching {TAIL ~ control} is reduced 
Consequently , time when the closing timing of the intake valve 8 is in the predetermined range T1 including the bottom dead center at { HEAD ~ a transition period } of switching { TAIL ~ control } is reduced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH