Kayan motawatsawa sosai, kuma an san shi sosai tsakanin waɗanda ke da fahimtar asali game da motoci. Misalai sun haɗa da watsawa ta motar, shaft ɗin tuƙi, bambancin, kayan sitiyari, har ma da wasu kayan lantarki kamar ɗaga tagogi mai ƙarfi, gogewa, da birki na lantarki. Tunda ana amfani da giya sosai kuma suna taka muhimmiyar rawa a cikin motoci, a yau za mu yi magana game da ilimin da ya shafi giya a cikin motoci.

Giya tana ɗaya daga cikin hanyoyin watsawa da ake amfani da su sosai a cikin motoci kuma tana da manyan ayyuka kamar haka:

1. Sauyin gudu: Ta hanyar haɗa gears guda biyu masu girma dabam-dabam, ana iya canza saurin gear. Misali, gears ɗin da ke cikin na'urar watsawa na iya rage ko ƙara saurin da injin ke watsawa don biyan buƙatun aikin motar.
2. Canjin karfin juyi: Lokacin da ake haɗa gears guda biyu masu girma dabam-dabam, ana kuma canza saurin da karfin juyi da gear ke watsawa. Misalan sun haɗa da babban na'urar rage gudu a shaft ɗin tuƙi da kuma na'urar watsawa ta motar.
3. Canjin hanya: Ƙarfin injin wasu motoci yana daidai da alkiblar motsin motar, don haka ya zama dole a canza alkiblar watsa wutar lantarki don tuƙa motar. Wannan na'urar yawanci ita ce babbar na'urar rage gudu da bambancinta a cikin motar.
A cikin motoci, wasu sassa suna amfani da gears madaidaiciya, yayin da wasu kuma suna amfani da gears helical. Gears madaidaiciya suna da ingantaccen watsawa yayin da haƙoran ke shiga da kuma cire faɗin haƙoran gaba ɗaya a lokaci guda. Duk da haka, rashin kyawun yanayin shine rashin kwanciyar hankali, tasiri, da kuma yawan amo. A gefe guda kuma, gears helical suna da tsayin tsarin haɗa haƙori da ƙarin haƙora da ke shiga cikin haɗin gwiwa idan aka kwatanta da gears madaidaiciya, wanda ke haifar da watsawa mai santsi, ƙarfin ɗaukar kaya mai ƙarfi, da ƙarancin hayaniya da tasiri. Babban rashin kyawun gears helical shine suna samar da ƙarfin axial lokacin da aka fuskanci ƙarfin al'ada, suna buƙatar a sanya bearings na turawa, wanda ke haifar da tsari mai rikitarwa.

Bukatun dongiyar motasuna da tsayi, jikin gear ya kamata ya kasance yana da juriya mai ƙarfi ga karyewa, saman haƙori ya kamata ya kasance yana da juriya mai ƙarfi ga tsatsa, lalacewa da kuma ƙarfin haɗuwa mai yawa, wato, yana buƙatar saman haƙori ya kasance mai tauri kuma zuciyar ta kasance mai tauri. Saboda haka, fasahar sarrafa gear ɗin mota ita ma tana da rikitarwa, tare da tsari mai zuwa:
Yankewa ➟ Ƙirƙira ➟ Zubar da Hakora ➟ Injin ➟ Faranti na Tagulla ➟ Sanya Carburizing ➟ Kashewa ➟ Ƙarancin Zafin Jiki ➟ Hakora ➟ Niƙa Hakora (Niƙa Mai Kyau)
Wannan hanyar sarrafa gears ba wai kawai tana da isasshen ƙarfi da tauri ba, har ma tana da babban tauri da juriyar lalacewa na saman haƙori.