Malinga ndi mfundo kusefera, mpweya fyuluta akhoza kugawidwa mu mtundu fyuluta, centrifugal mtundu, mafuta kusamba mtundu ndi pawiri mtundu. Zosefera zomwe zimagwiritsidwa ntchito nthawi zambiri mu injini zimaphatikizira fyuluta ya mpweya wa inertia mafuta, fyuluta ya mpweya yowuma, fyuluta ya mpweya wa polyurethane ndi zina zotero. Zosefera zamtundu wa inertia mafuta zadutsa mu inertia mtundu fyuluta, mafuta kusamba mtundu fyuluta, fyuluta mtundu fyuluta atatu kusefera, mitundu iwiri yotsiriza ya mpweya fyuluta makamaka kudzera fyuluta element fyuluta mtundu fyuluta. Mafuta osambira amtundu wa inertia ali ndi ubwino wochepetsera kukana, amatha kusintha malo ogwirira ntchito afumbi ndi amchenga, moyo wautali wautumiki, ndi zina zotero, zomwe zimagwiritsidwa ntchito m'magalimoto osiyanasiyana, injini zamatrakitala. Komabe, zosefera zamtunduwu zimakhala ndi kusefera kochepa, kulemera kwakukulu, kukwera mtengo komanso kukonza kosavutikira, ndipo kumachotsedwa pang'onopang'ono mu injini yamagalimoto. Chosefera cha pepala chowuma mpweya chimapangidwa ndi pepala la microporous filter lomwe limapangidwa ndi utomoni. Pepala la fyuluta ndi porous, lotayirira, lopindika, lili ndi mphamvu zamakina ndi kukana madzi, ndipo lili ndi ubwino wa kusefera kwakukulu, kapangidwe kosavuta, kulemera kochepa, mtengo wotsika, kukonza kosavuta, ndi zina zotero. pakadali pano. Chosefera cha fyuluta ya mpweya chimapangidwa ndi polyurethane yofewa, ya porous ndi spongy, yomwe imakhala ndi mphamvu yotsatsira adsorption. Izi fyuluta mpweya uli ndi ubwino pepala youma mpweya fyuluta, koma otsika makina mphamvu ndipo chimagwiritsidwa ntchito mu injini galimoto. Zoyipa za zosefera ziwiri zomalizazi ndi moyo wamfupi wautumiki komanso ntchito yosadalirika pansi pazikhalidwe zowopsa za chilengedwe.
