Majekeseni amafuta ndi zinthu zing'onozing'ono zamagetsi zomwe zimagwiritsidwa ntchito popereka mafuta kudzera pa spray molunjika kutsogolo kwa valve yolowera mu injini ya dizilo. Majekeseni a mafuta a dizilo ndi ovuta kwambiri; jekeseni ali mkulu micron fyuluta pamwamba polowera mbali yomwe imafanana ndi mabowo ang'onoang'ono ang'onoang'ono a hypodermic pansi kuti atomize mafuta a dizilo. Mafuta a dizilo amagwira ntchito ngati gwero lamafuta amkati mwa jekeseni. Gwero lalikulu la kulephera kwa majekeseni ndi madzi mumafuta. Pamene madzi mu mafuta amachotsa mafuta opangira mafuta, ziwalo zamkati zimawonongeka mofulumira ndipo jekeseni yonse imatha kulephera mofulumira.
Majekeseni ndi gawo lofunikira kwambiri la injini. Vavu ya jekeseni imatsegula ndi kutseka pa rpm yomweyo monga injini ya dizilo. RPM yodziwika ya injini za dizilo ku North America ndi pafupifupi 1800. Izi zikufanana ndi nthawi pafupifupi 140,000 pa ola! Kuphatikiza pa madzi mumafuta, majekeseni amapangidwa ndi tinthu tating'onoting'ono ta kaboni ndi dothi zomwe zimalowetsedwa mugawolo pogwiritsa ntchito chinthu choyeretsa mpweya. Mtundu wa mafuta, kalasi ndi zowonjezera zomwe zimagwiritsidwa ntchito zimakhudzanso kwambiri moyo wa jekeseni wamafuta. ECM (Engine Control Module) imayang'anira ma jekeseni amafuta mumainjini ambiri amagetsi a dizilo. Ma jekeseni a dizilo amakhala ndi mphamvu nthawi zonse pamene kiyi imayatsidwa mosasamala kanthu kuti injini yatembenuzidwa. ECM imayika jekeseni, kumaliza kuzungulira ndikupangitsa kuti jekeseni wa jekeseni atseguke. ECM italandira zambiri kuchokera ku masensa osiyanasiyana owongolera imatsimikizira kutalika kwa nthawi yomwe majekeseni amayenera kukhazikitsidwa kuti alowetse kuchuluka kwamafuta omwe amaperekedwa chifukwa cha mphamvu ya akavalo kuchokera ku injini.
Njira yojambulira dizilo kutsegula, kutseka ndi kugawa mafuta oyenera kumachitika mu milliseconds. Kuwombera mozungulira kwa jekeseni kumachitika pafupifupi 1.5 mpaka 5 milliseconds. Majekeseni amafuta a dizilo amabwera m'mawonekedwe ndi makulidwe osiyanasiyana kutengera kapangidwe ka injini ndi mtundu wake komanso kuchuluka kwa mphamvu. Ma jakisoni azigalimoto ndi ang'onoang'ono pang'ono kuposa zolemera-zopaka dizilo ndipo amayezedwa mu ma kiyubiki mainchesi. Pali mitundu iwiri ya majekeseni amafuta a dizilo: yoyamba imatchedwa jekeseni wa throttle body pomwe majekeseni 1-2 amapezeka mu injini ya dizilo yomwe ili mu injini ya dizilo ndipo amapereka kuchuluka kwamafuta opopera muzakudya zambiri. Dongosolo loperekera izi limatengera kulowetsa ndipo valavu yotengera imakokera mafuta mu silinda ya injini. Njira yachiwiri yobweretsera, yomwe imadziwika kuti injector yamafuta amtundu wa munthu, ndi yaposachedwa komanso yowotcha mafuta. Jakisoni wamtundu wa doko ndi wothandiza kwambiri kuposa carburetor popeza amasintha kachulukidwe ka mpweya ndi kutalika kwake ndipo sadalira vacuum yochulukirapo.
Kulephera kwa jakisoni wa throttle spray kumabwera pamene masilindala omwe ali pafupi kwambiri ndi majekeseni amakhala ndi osakaniza bwino kuposa omwe ali kutali kwambiri. Ndi doko la mtundu wa jakisoni cholakwika ichi chimathetsedwa ndi jekeseni wofanana wa mafuta pa silinda iliyonse mu injini.
Zidutswa za Injector
Injector iliyonse yamafuta ndi yosiyana pang'ono koma onse ali ndi magawo akuluakulu a 15 kuphatikiza fyuluta, mphete yolondolera, kasupe wapakati, kasupe wa mpando, mpando, chidutswa chamtengo, kuyimitsa, koyilo ya solenoid, thupi la solenoid, core ring, core, spray nsonga nyumba, wotsogolera ndi nsonga yopopera. Kuthamanga kwamafuta kumayendetsedwa ndi ECM pokweza mpira pampando wake. Izi zimathandiza kuti mafuta azidutsa polowera pampando ndikutuluka kudzera mu mbale yokhazikika yokhala ndi mabowo angapo. Mbalame yotsogolera imayang'anira njira yopopera mafuta. Mtundu uwu wa jekeseni uli ndi 10 mpaka 15 digiri yopopera ngodya. Mafuta a atomization a mtundu uwu wa jekeseni amafanana ndi jekeseni wa mtundu wa disk. Ma jakisoni amtundu wa diski ndi mpira potengera kapangidwe kake komanso osavuta kutsekeka.
