Fashewar Shenhai-Hujja
Lokacin da yazo da ƙira da shigar da kayan aikin fashewa, musamman daidaita injinan da ke hana fashewa da akwatunan haɗin gwiwa, tambaya gama gari ta taso: yakamata a sanya akwatunan mahaɗar fashewar abubuwan fashewa a wajen magoya bayan fashewar abubuwa? Amsar ta fi dogara da girman da buƙatun ƙirar motar.
A cikin ƙananan injuna masu hana fashewa, Ana yawan haɗa akwatin haɗin gwiwa tare da motar kanta. Wannan haɗaɗɗen ƙira yana sauƙaƙe tsarin gaba ɗaya, rage girman haɗin waje, kuma don haka inganta ingantaccen tsaro na kayan aiki. A irin wadannan lokuta, an rufe akwatin junction a cikin fashe-hujja fan, tabbatar da cikakkiyar amincin abin fashewa.
Duk da haka, don manyan injuna masu hana fashewa, akwatin junction yawanci keɓance kuma an haɗa shi ta hanyar bututun ƙarfe, sanya a wajen rumbun fan. Wannan ƙirar an yi shi ne musamman don sauƙin wayoyi da kiyayewa, kuma saboda manyan injuna na iya buƙatar ƙarin sarari don haɗi ko takamaiman sarrafa zafi.
a takaice, ba an akwatin junction-hujja an shigar a waje da fan ya dogara da girman motar da takamaiman bukatun aikace-aikacen. Nau'o'i daban-daban da girman injina na iya buƙatar ƙira iri-iri da hanyoyin shigarwa don tabbatar da aminci, abin dogara, da ingantaccen aiki.