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Karamin tsari | guda 20 |
Biyan kuɗi | L/C, T/T, O/A, D/A, D/P |
Bayarwa | A cikin kwanaki 15 |
Keɓancewa | Akwai |
An ƙera zoben fistan don rufe ratar da ke tsakanin piston da bangon Silinda. Idan wannan gibin ya yi ƙanƙanta, haɓakar zafin fistan na iya nufin cewa piston ɗin ya makale a cikin silinda, yana haifar da mummunar illa ga injin. A gefe guda kuma, babban gibi zai haifar da rashin isasshen hatimi na zoben piston zuwa bangon Silinda, wanda zai haifar da zubar da iska mai yawa (gas ɗin konewa yana shiga cikin crankcase) da raguwar matsa lamba na Silinda, ta haka zai rage ƙarfin ƙarfin injin.
Zoben fistan zoben tsagaggen ƙarfe ne da aka haɗa da diamita na waje na piston injin konewa na ciki ko injin tururi. Yawancin zoben fistan an yi su ne da baƙin ƙarfe ko ƙarfe.
Babban aikin zoben piston a cikin injin shine:
Rufe ɗakin konewa don rage asarar iskar gas na crankcase.
Inganta canjin zafi daga fistan zuwa bangon Silinda.
Kula da daidaitaccen adadin mai tsakanin fistan da bangon Silinda
Daidaita yawan man inji ta hanyar goge mai daga bangon Silinda baya zuwa kwanon mai.
Zoben fistan yana goyan bayan fistan don haka fistan zai iya tafiya sama da ƙasa sannu a hankali .
Zoben fistan da aka saba amfani da su akan ƙananan injuna sun haɗa da zoben matsawa, zoben goge goge, da zoben mai . Zoben matsawa shine zoben fistan dake cikin ramin zobe mafi kusa da kan fistan. Zoben matsawa yana rufe ɗakin konewa daga kowane yatsa yayin aikin konewa.