Inkqubo yohlengahlengiso lwexesha levalvu yeenjini zemoto, ekwabizwa ngokuba yinkqubo yevalve eguquguqukayo eqhubekayo, yitekhnoloji ebalulekileyo kwicandelo lobunjineli beemoto zanamhlanje.
1. Le nkqubo isetyenziswe ngokubanzi kwiinjini eziphezulu{1}}ezisebenzayo. Ngolawulo oluntsonkothileyo kunye nenkqubo yophumezo, inokulungelelanisa isigaba sekhamera ye-injini okanye isinyusi sevalvu ukunyusa inkqubo yevalvu ye-injini.
2. I-angle yexesha le-valve inempembelelo ebalulekileyo kuqoqosho kunye nokusebenza kwamandla enjini. Ngesantya esiphezulu, umthamo wokungena kunye nokusebenza kakuhle kunokunyuswa ngokusetyenziswa ngokupheleleyo kwe-inertia yokuthatha, ngoko i-valve ivula kwangaphambili kwaye ivale kamva; ngesantya esiphantsi, imeko ichasene noko. Okwangoku, uninzi lweenjini zanamhlanje zisebenzisa obu bugcisa.
3. Kwi-injini ye-piston emine{1}}yestroke, imivumbo emine yokuthatha, ukucinezela, amandla kunye ne-exhaust ibalulekile. Phakathi kwabo, sihlawula ingqalelo ekhethekileyo kwimpembelelo yeqondo lokuvula i-valve kwi-injini yokungena. Umgaqo osisiseko we-cylinder intake "uxinzelelo olubi", oko kukuthi, ukuhlukana koxinzelelo lwegesi ngaphakathi nangaphandle kwe-cylinder. Xa injini isebenza ngesantya esiphantsi, ukwenzela ukuba ugweme ibhalansi yoxinzelelo ngaphakathi nangaphandle kwe-cylinder, okubangela ukunciphisa uxinzelelo olubi kunye nokungena ngokwaneleyo, idigri yokuvula i-valve kufuneka ilawulwe ngokuchanekileyo, ngokuqhelekileyo isebenzisa indlela emfutshane yokubetha; xa ubaleka ngesantya esiphezulu, ukuze kuqinisekiswe ukuba i-injini inokuwuthatha kakuhle umoya, kufuneka ivalve enkulu.
4. Ukuze kusonjululwe imingeni ejongene neenjineli ekulinganiseni iimpawu zetorque ye-injini ngesantya esiphantsi kunye neempawu zamandla e-injini ngesantya esiphezulu, itekhnoloji yokulinganisa ixesha levalvu yabakho. Le teknoloji inokulungelelanisa ngokuguquguqukayo ukunyuswa kwevalve ngokwemeko yokusebenza ye-injini, ngaloo ndlela iqinisekisa i-torque ephezulu ngesantya esiphantsi kunye nokukhutshwa kwamandla aphezulu kwisantya esiphezulu.