a variable valve lift mechanism which increases {HEAD ~ a lift} of {TAIL ~ the intake valve} while delaying the closing timing of the intake valve at least, 
a variable valve lift mechanism which increases { HEAD ~ a lift } of { TAIL ~ the intake valve } while delaying the closing timing of the intake valve at least ,
OTH OTH OTH OTH OTH OTH OTH 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