Inkqubo yokubonelela ngamafutha yinxalenye eyimfuneko ye-injini yemoto, enoxanduva lokubonelela injini ngomxube ovuthayo. Inkqubo iqulethwe ngamacandelo amaninzi, kubandakanywa itanki yamafutha, impompo yepetroli, i-fuel buffer, i-fuel pressure regulator, i-fuel filter, i-injector, kunye ne-valve yokuqala ebandayo (i-injector yokuqala ebandayo). Umsebenzi ophambili wenkqubo yokubonelela ngamafutha kukugcina kunye nokuhluza i-fuel kunye nokuguqula ibe ngumxube otshayo ukuhlangabezana neemfuno ze-injini. Indlela yokubonelela ngamafutha ahlukeneyo iya kwahluka. Ngokomzekelo, inkqubo yokubonelela ngepetroli iya kulungiselela isixa esithile kunye noxinzelelo lwegesi edibeneyo ngokweemfuno zenjini. Ukongezelela, inkqubo yokunikezelwa kwamafutha ngokuqhelekileyo ithatha iindlela ezimbini zesakhiwo, enye iteknoloji yombhobho wokubuyisela kwaye enye ingenayo iteknoloji yombhobho wokubuyisela. Inkqubo yokubonelela ngamafutha idlala indima ebalulekileyo ekusebenzeni okuqhelekileyo kwenjini yemoto.
Umgaqo osebenzayo wenkqubo yokubonelela ngamafutha kukukhupha i-fuel kwi-tank ye-fuel kwaye uyihambise kwigumbi lokutshisa injini. Kule nkqubo, inkqubo yokubonelela ngamafutha kufuneka igcine ukuhamba okuzinzile kunye noxinzelelo lwamafutha ukuze kuqinisekiswe ukusebenza okuqhelekileyo kwe-injini. Impompo yamafutha yinxalenye ephambili yenkqubo yokubonelela ngamafutha, enoxanduva lokukhupha i-fuel kwi-tank yamafutha kwaye ihanjiswe kwi-injini. I-fuel buffer isetyenziselwa ukulungelelanisa ukuhamba kunye noxinzelelo lwamafutha ukuqinisekisa ukuzinza kwenkqubo yokubonelela ngamafutha. Isihluzo samafutha sisetyenziselwa ukuhluza ukungcola kunye nongcoliseko kwi-fuel ukukhusela injini emonakalweni. I-injector itshiza i-fuel kwigumbi lokutshisa i-injini ukuphumeza ukuveliswa komxube ovuthayo. Ivalve yokuqalisa ebandayo (i-injector yokuqalisa ebandayo) isetyenziselwa ukunika isibaso esongezelelweyo xa i-injini iqalwa ngokubanda ukuqinisekisa ukuba injini ingaqala kakuhle.
Uyilo kunye nendlela yokusebenza yenkqubo yokubonelela ngamafutha iya kuhluka ngokuxhomekeke kumafutha. Ngokomzekelo, inkqubo yokubonelela ngepetroli idla ngokuthatha iindlela ezimbini zolwakhiwo, enye inobuchwephesha bombhobho wokubuyisela kwaye enye ingenabuchwephesha bombhobho wokubuyiswa. Inkqubo yokubonelela ngamafutha kunye neteknoloji yombhobho wokubuyisela iya kubuyisela i-fuel engaphezulu kwitanki yamafutha xa injini iyeka ukusebenza ukugcina amafutha kunye nokukhusela okusingqongileyo. Iteknoloji ngaphandle kombhobho wokubuyisela ayinalo msebenzi, kodwa inokusebenzisa i-fuel ngokufanelekileyo kwaye iphucule ukusetyenziswa kwamafutha. Kungakhathaliseki ukuba yeyiphi imo yesakhiwo, inkqubo yokubonelela ngamafutha kufuneka igcine isimo esizinzileyo sokusebenza ukuqinisekisa ukusebenza okuqhelekileyo kwenjini.