Oiri yeinjini inovira patembiricha yakadini?
Flash point yemafuta einjini
Ngatitangei kufunga nezvenyaya iyi kubva patembiricha shoma yepfungwa nhatu dzakarongwa mundima yekutanga uye isu tichadziwedzera mukukwira kurongeka. Sezvo munyaya yemafuta emotokari, hazvibviri kuti zvichave zvichiita kunzwisisa zvine musoro kuti ndeipi yemiganhu inouya pakutanga.
Kana tembiricha inosvika 210-240 madhigirii (zvichienderana nemhando yechigadziko uye yekuwedzera pasuru), inopenya poindi yemafuta einjini inocherechedzwa. Uyezve, izwi rekuti "flash" rinoreva kutaridzika kwenguva pfupi kwemurazvo pasina kupisa kunotevera.
Kupisa kwekushisa kunotsanangurwa nenzira yekupisa mu crucible yakazaruka. Kuti uite izvi, mafuta anodururwa mundiro yesimbi yekuyeresa uye inopisa pasina kushandiswa kwemurazvo wakazaruka (somuenzaniso, pachitofu chemagetsi). Kana tembiricha yasvikwa padyo nenzvimbo inotarisirwa kupenya, murazvo wakavhurika sosi (kazhinji unopisa gasi) unounzwa pakukwira kwega kwega kwedhigirii 1 pamusoro peiyo crucible nemafuta. Kana iyo mhute yemafuta ikasapenya, crucible inodziya neimwe 1 degree. Uye zvichingodaro kusvika kupenya kwekutanga kuumbwa.
Iyo tembiricha yekupisa inocherechedzwa pachiratidzo chakadaro pane thermometer, kana mapfudzi emafuta asingangopfuti kamwe chete, asi ramba uchipisa. Ndiko kuti, kana mafuta achipisa, mhute dzinopisa dzinobudiswa nesimba rakadaro zvokuti murazvo uri pamusoro pechiputi haudzimi. Paavhareji, chiitiko chakafanana chinoonekwa 10-20 madhigirii mushure mekusvika painopenya.
Kutsanangura maitiro ekuita kwemafuta einjini, chete flash point ndiyo inowanzozivikanwa. Sezvo mumamiriro ezvinhu chaiwo kupisa kwekushisa kunenge kusina kumbosvika. Zvirinani mupfungwa kana zvasvika kune wakavhurika, murazvo wakakura.
Boiling point yemafuta einjini
Mafuta anovira pakupisa kwe270-300 degrees. Boils mune yechinyakare pfungwa, kureva, nekuburitswa kwegasi bubbles. Zvekare, chiitiko ichi hachiwanzo shomeka pachiyero chevhoriyamu yese yerubricant. Mune sump, mafuta haazombosviki tembiricha iyi, sezvo injini ichatadza nguva refu isati yasvika madhigirii mazana maviri.
Kazhinji kuunganidzwa kudiki kwemafuta kunofashaira munzvimbo dzinopisa dzeinjini uye kana paine zviri pachena kusashanda muinjini yekupisa kwemukati. Semuyenzaniso, muhumburumbira musoro mumakomba ari pedyo mavharuvhu ekubudisa kana kusashanda zvakanaka gasi kugovera michina.
Chiitiko ichi chine mhedzisiro yakaipa zvakanyanya pane inoshanda zvimiro zvelubricant. Mukufanana, sludge, soot kana mafuta deposits anoumbwa. Izvo, zvakare, zvinosvibisa mota uye zvinogona kukonzera kuvharika kwemafuta ekudya kana nzira dzekuzora.
Payero ye molecular, shanduko inoshanda inoitika muoiri nechekare kana iyo flash point yasvika. Chekutanga, zvikamu zvidiki zvinonyungudutswa kubva mumafuta. Izvi hazvisi zvinhu zvekutanga chete, asiwo zvikamu zvekuzadza. Iyo pachayo inoshandura maitiro emafuta. Uye kwete nguva dzose kuva nani. Chechipiri, iyo oxidation process inokwidziridzwa zvakanyanya. Uye maokisidhi muoiri yeinjini haabatsiri uye anotokuvadza ballast. Chechitatu, maitiro ekupisa mafuta mumagetsi ejini anokwidziridzwa, sezvo oiri yakanyungudika uye inopinda mumakamuri ekupisa muhuwandu hwakawanda.
Zvese izvi pakupedzisira zvinokanganisa sosi yemota. Nokudaro, kuitira kuti usaunza mafuta kumota uye kuti usagadzirise injini, zvakakosha kunyatsocherechedza kutonhora. Muchiitiko chekutadza kutonhora kwehurongwa kana zviratidzo zviri pachena zvekupisa kwemafuta (yakawanda sludge kuumbwa pasi pevhavhavhavha yevhavha uye mune sump, kukurumidza kushandiswa kwemafuta emarara, kunhuhwirira kwezvigadzirwa zvemafuta akapiswa panguva yekushanda kweinjini), zvinokurudzirwa kuongorora uye bvisa chikonzero chedambudziko.
