A cikin yanayi na musamman, injin yana buƙatar samfurin da aka samo asali na musamman, wanda a zahiri samfurin da aka samo asali ne, galibi bisa ga jerin ƙirar tsarin motar, don haka injin yana da ikon kariya ta musamman (kamar hana fashewa, hana lalata sinadarai, waje da ruwa, da sauransu).
Wasu sassan tsarin da matakan kariya na waɗannan jerin sun bambanta da jerin asali, kuma samfuran da aka samo daga yanayin amfani da motoci sune:
lambar yanayi ta musamman
Nau'in zafi mai danshi, wurin da aka kare yanayi TH
Busasshen zafi, kariya daga yanayi TA
Lokutan zafi, lokutan kariya daga yanayi T
Zafi mai ɗanɗano, babu kariyar yanayi THW
Busasshen zafi, wurin da ba a kare shi daga yanayi ba TAW
Sigar wurare masu zafi, babu kariyar yanayi TW
Na cikin gida, nau'in hana lalatawa mai sauƙi Babu lambar
Kariyar tsatsa ta cikin gida, matsakaiciyar kariya daga tsatsa F1
Na cikin gida, mai ƙarfi mai hana lalata F2
A waje, mai sauƙin jure tsatsa W
Kariyar tsatsa ta waje, matsakaiciyar kariya daga tsatsa WF1
A waje, mai ƙarfi irin WF2 mai hana lalata
yanayin tudu G
Ga injina/injinan da ba sa fashewa da ake amfani da su a ƙarƙashin yanayi na musamman, ya kamata a ƙara lambar yanayi ta musamman bayan samfurin motar lokacin yin oda.
Lura: 1) Wurare masu kariya daga yanayi: a cikin gida ko wurare masu kyakkyawan matsuguni (tsarin gine-ginensa na iya hana ko rage tasirin canje-canjen yanayi a waje, gami da yanayin da ke ƙarƙashin rumfar).
2) Babu wuraren kariya daga yanayi: duk a bude ko kuma kawai kariya mai sauƙi (kusan ba zai yiwu a hana tasirin canje-canjen yanayi na waje ba).
Lokacin Saƙo: Disamba-07-2023