Chosefera mafuta a injini ndiye fyuluta yamafuta a injini. Ntchito ya fyuluta yamafuta a injini ndikusefa ma sundries, ma colloid ndi chinyezi mumafuta a injini ndikupereka mafuta oyera a injini kumalo onse opaka mafuta.
Pofuna kuchepetsa kukana kukangana pakati pa ziwalo zosuntha za injini ndi kuchepetsa kuwonongeka kwa magawo, mafuta amasamutsidwa mosalekeza kupita kumtunda wamtundu uliwonse wosuntha kuti apange filimu yamafuta opaka mafuta. Mafuta a injini palokha amakhala ndi chingamu, zonyansa, chinyezi ndi zina. Pa nthawi yomweyi, pakugwira ntchito kwa injini, kuyambitsidwa kwa zinyalala zachitsulo, kulowa kwa sundries mumlengalenga ndi kutulutsa mafuta osakaniza pang'onopang'ono kumawonjezera ma sundries mu mafuta. Ngati mafuta sanasefedwe ndikulowa mwachindunji mumayendedwe opaka mafuta, ma sundries omwe ali mumafutawo amabweretsedwa pamikangano yamagulu osuntha, kufulumizitsa kuvala kwa magawo ndikuchepetsa moyo wautumiki wa injini.
Chifukwa cha kukhuthala kwakukulu kwa injini yamafuta palokha komanso zonyansa zambiri mumafuta a injini, kuti apititse patsogolo kusefera bwino, fyuluta yamafuta a injini nthawi zambiri imakhala ndi magawo atatu: otolera mafuta a injini, fyuluta yamafuta a injini ndi mafuta a injini yachiwiri. fyuluta. Chojambulira chojambulira chimayikidwa mu poto yamafuta kutsogolo kwa mpope wamafuta ndipo nthawi zambiri amatengera mtundu wa zenera lachitsulo. Chosefera choyambirira chamafuta chimayikidwa kumbuyo kwa pampu yamafuta ndikulumikizidwa motsatizana ndi njira yayikulu yamafuta. Zimaphatikizapo zitsulo zopukutira, zosefera za utuchi ndi pepala losefera la microporous. Tsopano pepala losefera la microporous limagwiritsidwa ntchito kwambiri. Zosefera zabwino zamafuta zimayikidwa kuseri kwa mpope wamafuta ndikulumikizidwa molumikizana ndi gawo lalikulu lamafuta, makamaka kuphatikiza mtundu wa pepala losawoneka bwino komanso mtundu wa rotor. Fyuluta yamafuta amtundu wa rotor imatenga kusefera kwa centrifugal popanda zinthu zosefera, zomwe zimathetsa kutsutsana pakati pa kuchuluka kwamafuta ndi kusefera bwino.
