Mapeyala awiri a malamba otumizira mphamvu amaikidwa pa pulley yotengera mphamvu.Lamba wakutsogolo amatumiza mphamvu ku dongosolo lodulira, lomwe limatchedwa lamba wamagetsi, ndipo lamba wakumbuyo amatumiza mphamvu kumayendedwe oyenda, omwe amatchedwa lamba woyenda.Lamba wamagetsi odulira amalumikizidwa ndi dongosolo lodulira kudzera mu gudumu lozungulira ili.Ichi ndi pinch pulley, yomwe imalumikizidwa ndi cholumikizira waya.Pamene kukoka waya wotchipa ndi olimba, pinch pulley compresses lamba HIV, ndipo mphamvu ya injini imafalitsidwa ku dongosolo kudula.Chosinthira chingwe chikachedwa, chimadula kufalikira kwamphamvu.Palinso pulley ya pinch kumbali ya lamba wamagetsi oyenda.Pulley ya pinch imalumikizidwa ndi switch wire switch.Pamene pinch pulley ili pamalo awa, lamba liri mu chikhalidwe chomasuka, ndipo mphamvu ya injini sichitha kufalikira chammbuyo.Momwemonso, limbitsani waya wokoka.Mukasintha, pinch pulley imayandikira ndikukakamiza lamba wamagetsi, potero imatumiza mphamvu ya injini kupita ku pulley yozungulira kumbuyo, yomwe imalumikizidwa ndi bokosi la gear.Ili ndi bokosi la gear, lomwe lili ndi zida zingapo zophatikizira zida.Kupyolera mu kuphatikiza kwa magiya osiyanasiyana, kusintha kwa liwiro la injini ndi njira yozungulira kumatsirizika.Kwa bokosi la giya, gudumu lozungulirali ndikulowetsa mphamvu zake, ndipo kuphatikiza kwa zida mkati mwa gearbox kumayendetsedwa ndi kusintha kwa liwiro. dongosolo.