According to this construction, the upper limit guard is not applied so as to limit the valve overlap amount using {HEAD ~ the upper limit guard value} in {TAIL ~ this case} 
in
According to this construction , the upper limit guard is not applied so as to limit the valve overlap amount using { HEAD ~ the upper limit guard value } in { TAIL ~ this case }
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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL