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Chifukwa mu injini ntchito ndondomeko, zitsulo kuvala zinyalala, fumbi, madipoziti mpweya ndi mkulu-kutentha oxidized madipoziti colloidal, madzi, etc. mosalekeza wothira mafuta mafuta.Chifukwa chake, ntchito ya fyuluta yamafuta ndikusefa zonyansa zamakina ndi mkamwa, kusunga mafuta opaka mafuta kukhala oyera, ndikutalikitsa moyo wautumiki wa injini.Zosefera zamafuta a injini ziyenera kukhala ndi mphamvu zosefera zolimba, kukana kutsika kochepa komanso moyo wautali wautumiki.Nthawi zambiri, zosefera zingapo zokhala ndi zosefera zosiyanasiyana zimayikidwa mu chotolera chojambulira makina-zosefera, zosefera zowoneka bwino komanso zosefera zabwino, zomwe zimalumikizidwa motsatana kapena motsatizana mugawo lalikulu lamafuta.(Yolumikizidwa mu mndandanda ndi njira yayikulu yamafuta imatchedwa fyuluta yathunthu. Injini ikagwira ntchito, mafuta onse opaka mafuta amasefedwa kudzera mu fyuluta; yomwe ili yofananayo imatchedwa sefa yogawa).Pakati pawo, fyuluta coarse chikugwirizana mndandanda mu ndime yaikulu mafuta, amene ndi otaya mtundu wathunthu;fyuluta yabwino imalumikizidwa molumikizana munjira yayikulu yamafuta, yomwe ndi mtundu wogawanika.Ma injini amakono amagalimoto nthawi zambiri amakhala ndi fyuluta imodzi yokha komanso fyuluta imodzi yamafuta odzaza.Yoyenera injini ya WP10.5HWP12WP13
 
Makhalidwe aukadaulo omwe fyuluta yabwino yamafuta imafunikira kuti ikwaniritse 1. Pepala losefera: Zosefera zamafuta zimakhala ndi zofunika kwambiri pamapepala osefera kuposa zosefera mpweya, makamaka chifukwa kutentha kwamafuta kumasintha pakati pa 0 ndi 300 madigiri.Pansi pa kusintha kwakukulu kwa kutentha, kuchuluka kwa mafuta kudzasinthanso, zomwe zidzakhudza kusefedwa kwa mafuta.Mapepala a fyuluta yamafuta apamwamba amatha kusefa zonyansa kuti zitsimikizire kuyenda kokwanira pansi pakusintha kwakukulu kwa kutentha.2. Mphete yosindikiza ya mphira: Mphete yosindikiza ya fyuluta yamafuta apamwamba kwambiri imatenga mphira wapadera kuti iwonetsetse kuti 100% yatuluka mafuta.3. Valavu yopondereza yobwerera kumbuyo: yoyenera kokha zosefera zamafuta apamwamba.Injini ikazimitsidwa, imatha kuletsa fyuluta yamafuta kuti isaume;injini ikayatsidwanso, nthawi yomweyo imapangitsa kuti injiniyo ikhale ndi mafuta.4. Valavu yothandizira: ndiyoyenera yokha zosefera zamafuta apamwamba.Pamene kutentha kwakunja kumatsikira pamtengo wina kapena fyuluta ya mafuta imaposa moyo wautumiki wamba, valavu yowonongeka idzatsegulidwa pansi pa kupanikizika kwapadera, kulola mafuta osasefedwa kuti ayende molunjika mu injini.Komabe, zonyansa zamafuta zidzalowa mu injini, koma kutayika kwake kumakhala kocheperako kuposa kutayika kopanda mafuta mu injini.Chifukwa chake, valavu yakusefukira ndiye chinsinsi choteteza injini pakagwa mwadzidzidzi.
 
Kuyika zosefera zamafuta ndi kuzungulira kwa m'malo 1 Kuyika: kukhetsa kapena kuyamwa mafuta akale, masulani zomangira, chotsani zosefera zakale, ikani mafuta osanjikiza pa mphete yosindikizira ya fyuluta yatsopano yamafuta, ndiyeno yikani Sefa yatsopano yamafuta. ndi kumangitsa zomangira zomangira.2. Njira zosinthira zomwe akulimbikitsidwa: magalimoto ndi magalimoto ogulitsa amasinthidwa miyezi isanu ndi umodzi iliyonse
Zofunikira zamagalimoto pazosefera zamafuta 1. Zosefera zolondola, zosefera tinthu tating'onoting'ono> 30 um, kuchepetsa tinthu tating'onoting'ono tomwe timalowa mumpata wothira mafuta ndikupangitsa kuvala (<3 um-30 um) Kuyenda kwamafuta kumakwaniritsa kufunikira kwamafuta a injini.2. Kuzungulira m'malo mwake ndikwatali, osachepera kuposa moyo (km, nthawi) wamafuta.Kulondola kwa fyuluta kumakwaniritsa zofunikira zoteteza injini ndikuchepetsa kutayika.Kuchuluka kwa phulusa lalikulu, koyenera kumadera ovuta.Itha kutengera kutentha kwamafuta ambiri komanso dzimbiri.Mukasefa mafuta, kusiyana kwapang'onopang'ono kumakhala kocheperako, kumakhala bwino, kotero kuti mafuta amatha kudutsa bwino.