I-throttle yivalve elawulwayo elawula ukuhamba komoya kwi-injini. Xa igesi ingena kumbhobho wokungena, iya kuxutywa ngepetroli kwaye ibe ngumxube ovuthayo, oya kutshisa kwaye wenze umsebenzi. Idityaniswe kwisihluzo somoya, ibhloko yenjini, eyaziwa ngokuba ngumqala wenjini yemoto.
Iinjini zepetroli ezine zestroke zikhangeleka zinje. I-Throttle yenye yezona ndawo zibalulekileyo zenkqubo ye-injini ye-injini yombane yanamhlanje. Inxalenye ephezulu yayo sisihluzo somoya, indawo esezantsi yibhlokhi yesilinda se-injini, kwaye ngumqala we-injini yemoto. Ukukhawuleza kwemoto kuyaguquguquka, kwaye i-throttle engcolileyo inobudlelwane obukhulu, ukucocwa kwe-throttle kunokunciphisa ukusetyenziswa kwepetroli kunokwenza injini iguquguquke kwaye yomelele. I-throttle ayifanele isuswe ukuze ihlambuluke, kodwa kunye nokugxilwa kwabanini ukuxoxa ngakumbi
