Uyini umehluko phakathi kukawoyela wegiya we-75w90 no-75w85?
Okuqukethwe
Yini i-viscosity kawoyela?
Uhlu lwesimanje lwamafutha egiya kwesinye isikhathi lungashaqisa futhi lwenza noma yimuphi umnikazi wemoto adideke. Ngaphezu kokumaka okungaqondakali, kukhona nokuhlukaniswa kwamafutha kulezi zinhlobo ezilandelayo:
- Amaminerali.
- I-semi-synthetics.
- Ama-synthetics.
Ngayinye yalezi ziphuzo ibonakala ngezakhiwo nezici zomuntu ngamunye. Kodwa-ke, umnikazi wemoto akufanele anake le mibhalo, kodwa kumbandela oyinhloko wokukhetha amafutha - i-viscosity.
Yile parameter ekuvumela ukuthi uqonde ukuthi kungenzeka yini ukusebenzisa uketshezi ukuze usebenze ebangeni elithile lokushisa. Ngamanye amazwi, ipharamitha ye-viscosity ikuvumela ukuthi unqume ikhono loketshezi lokulondoloza uketshezi lwalo lwangempela ngesikhathi sokugcoba izingxenye, ngoba wonke umuntu uyazi ukuthi uwoyela ku-gearbox ushuba lapho izinga lokushisa ngaphandle lehla. Lokhu kuholela ekugcobeni okungalungile futhi, ngokufanele, ubunzima ekusebenzeni kwe-gearbox.
I-SAE Index
Ngokwesigaba se-SAE, uwoyela wegiya uhlukaniswe izigaba ezilandelayo:
- Uketshezi oluzosebenza ebusika (uhlamvu lwesiNgisi u-W luyadingeka ekumaka).
- Uketshezi oluzosebenza ehlobo (ayikho inkomba ekumaka).
- Uketshezi lwesizini yonke. Ekumakeni kwayo, zombili izinombolo zikhona ngesikhathi esisodwa, ezihlukaniswa ngohlamvu W.
Uhlobo lokugcina lwamafutha lungasetshenziswa abashayeli unyaka wonke.
Kuyaqapheleka ukuthi izidingo zesigaba ngasinye sawoyela wegiya zibhalwe ngesigaba esibizwa nge-SAE J306. Iphinde ikhombise izinga lokushisa eliphezulu elivumelekile lokusebenzisa uketshezi ku-gearbox, kuya ngesigaba.
| Ibanga le-Viscosity | Izinga lokushisa elincane ukuze ufinyelele i-kinetic viscosity |
| 70W | -55 |
| 75W | -40 |
| 80W | -26 |
| 85W | -12 |
Umehluko ojwayelekile
Lapho umaka amafutha, inombolo yokuqala isho isigaba se-viscosity lapho usebenzisa imikhiqizo ebangeni lokushisa elibi. Inani lenombolo yesibili ngemva kohlamvu W liphethe ulwazi mayelana nepharamitha ye-viscosity yokusebenzisa uwoyela ebangeni lokushisa elihle. I-value encane yepharamitha yokuqala futhi enkulu eyesibili, kuyoba ngcono uketshezi. Lokhu kuchazwa iqiniso lokuthi inombolo yokuqala ephansi ingaqinisekisa ukuhamba kwamahhala kwamagiya emazingeni okushisa angaphansi kweqanda, futhi inani elikhulu lenombolo yesibili liqinisekisa amandla andayo efilimu edalwayo.
Ngemva kokuhlaziya umehluko ovamile wokumaka uwoyela wegiya, singadlulela ezibonelweni ezithile.
Uyini umehluko phakathi kuka-75w90 kanye no-75w85?
Kokubili uketshezi luzoba nenani elifanayo lokushisa lasebusika. Kodwa-ke, kuwoyela we-75W85, inani lomsebenzi ebangeni elihle lizofinyelela kuma-degree angama-35, kanti uketshezi oluphawulwe 75W90, izinga lokushisa eliphakeme elivumelekile lokusebenza lingaphakathi kwama-degree angama-45.
Uyini umehluko phakathi kuka-75w90 kanye no-75w80?
Isimo siyefana nalezi zinto eziwuketshezi. Umehluko usemkhawulweni ongaphezulu wokusebenza koketshezi ezingeni lokushisa elihle ngaphandle kwefasitela.
Uyini umehluko phakathi kuka-75w90 kanye no-80w90?
Kule nguqulo yokuqhathanisa uwoyela wamagiya amabili, ayiselona izinga lokushisa elilungile eliza ngaphambili, kodwa selingelinye elibi. Ngakho-ke, uketshezi olubhalwe ukuthi 75W90 lungasetshenziswa ngisho naku-40 degrees. Futhi umkhawulo ovunyelwe ukusebenza kawoyela 80W90 transmission -26 degrees.
Ngokukhetha kahle uketshezi ku-gearbox, ungenza kube lula ukuphatha imoto ngenxa yokusebenza okuthule kakhulu kwesistimu yokudlulisa. Kusuka kumshayeli kuleli cala, kuzodingeka umzamo omncane wokushintsha amagiya.
