Ukukhethwa kobuchwepheshe kwesitimela se-valve kunquma izici ezijwayelekile zomklamo wenjini futhi kunomthelela omkhulu ekwakhiweni kwayo. Iningi lemishini yokuhambisa igesi yenjini yemoto isebenzisa izinhlobo ezimbili zokudlulisela zebhande elinamazinyo kanye nobuchwepheshe bokudlulisa iketango. Ukukhethwa kwendlela yokudlulisa ama-valve efaneleka kakhulu yohlelo oluthile kufanele kusekelwe ekuhlolweni kokucaciswa okuhlosiwe ezingeni lesistimu yenjini, kanye nokucatshangelwa okuphelele kokulahlekelwa ukungqubuzana, amandla okukhathala, ukunakekelwa, kanye nezinguquko zesikhathi se-valve kuyo yonke impilo yesevisi. , ukusebenza okuguquguqukayo, izici ze-acoustic, ikhwalithi, indawo yokufaka nezindleko zokukhiqiza nezinye izici.
i
Indlela yokusabalalisa igesi ithinta ngqo ukusetshenziswa kukaphethiloli kwenjini ngokulahleka kwayo kokungqubuzana, ngakho-ke ukwakheka okuphansi kokungqubuzana kwendlela yokusabalalisa igesi kuya ngokuya kubaluleke kakhulu. Uma kuqhathaniswa neketango lasehlathini kanye neketango le-roller, iketango elinamazinyo linikeza Ukukhubazeka okukhudlwana kokungqubuzana.
Lapho ubude benjini kufanele bube bufushane kakhulu, i-chain drive ingcono kune-belt drive; izinjini eziningi zikaphethiloli nezinye izinjini zikadizili zisebenzisa izilungisi zesigaba se-hydraulic camshaft, futhi i-chain drive kanye ne-wet belt drive yizinhlelo zokushayela igesi zokusabalalisa igesi ezibiza kakhulu. Ukushayela ibhande kungafinyelela ukunemba kwesikhathi kwe-valve ephezulu kuyo yonke impilo yesevisi, okuzoba okubaluleke nakakhulu ekukhishweni kokukhipha umoya esikhathini esizayo kanye nokusetshenziswa kukaphethiloli. Ngenxa yengcindezi yomjovo ephezulu nephezulu, itorque yephampu yomjovo kaphethiloli ibaluleke kakhulu ebhandeni neketango. Impilo yesevisi iyanquma.
Ukuze kuzuzwe izinga elihle kakhulu le-NVH, ukungqubuzana nokusebenza okuguquguqukayo, kuyadingeka ukuklama ngokucophelela futhi ukwandise ukuma kwejika lebhande, kodwa akuhlangene nohlobo lokudluliswa kwe-valve, ngakho-ke kuzoqhubeka nokuba khona ukungezwani. phakathi kwe-belt drive kanye nokuncintisana kwe-chain drive.
