Ko dot 3 uye dot 4 brake fluid ingasanganiswa here?
Zviri mukati
Ndeupi musiyano uripo pakati peDOT-3 neDOT-4 brake fluids?
Ose ari maviri anoonekwa mabhureki fluid anogadzirwa panheyo imwechete: glycols. Glycols madoro ane mapoka maviri ehydroxyl. Izvi zvinotarisa kugona kwavo kwepamusoro kusanganisa nemvura pasina kunaya.
Ngatitarisei kusiyana kukuru kwekushanda.
- Kupisa kupisa. Zvichida, maererano nekuchengeteka, ichi ndicho chiratidzo chinonyanya kukosha. Iwe unogona kazhinji kuwana kusanzwisisa kwakadaro pane network: brake fluid haigone kubika, sezvo musimboti hapana maturusi akadaro ekupisa muhurongwa. Uye madhisiki uye zvigubhu zviri kureba zvakakura kubva kune macalipers nemasilinda kuitira kuendesa tembiricha kune vhoriyamu yemvura. Panguva imwecheteyo, ivo vanofefeterwawo nekupfuura nemhepo inoyerera. Kutaura zvazviri, kupisa kunokonzerwa kwete chete nekunze kwekunze. Munguva yekushanda mabhureki, iyo brake fluid inomanikidzwa nekumanikidza kukuru. Ichi chinhu chinokanganisawo kupisa (kuenzanisa kunogona kudhonzwa nekudziya kwevolumetric hydraulics panguva yebasa rakasimba). Mvura DOT-3 ine poindi yekuvira inosvika +205°C. DOT-4 ine poindi yakakwira zvishoma: +230°C. Ndiko kuti, DOT-4 inonyanya kupikisa kupisa.
- Donhedza munzvimbo yekubikira kana yanyoroveswa. Mvura yeDOT-3 inofashaira mushure mekuunganidza hunyoro hwe3,5% muhuwandu pakupisa kwe +140 ° C. DOT-4 yakanyanya kugadzikana panyaya iyi. Uye nechiyero chakafanana chekunyorova, haizofashaira kwete kare kupfuura mushure mekupfuura chiratidzo che + 155 ° С
- Viscosity pa -40 ° C. Ichi chiratidzo chezvinwiwa zvese chinoiswa neiyo yazvino chiyero padanho risingapfuuri 1800 cSt. Kinematic viscosity inokanganisa yakaderera tembiricha zvinhu. Iko kukora kwemvura, kunowedzera kuoma kuti sisitimu ishande pakudziya kwakaderera. DOT-3 ine yakaderera-kupisa viscosity ye1500 cSt. DOT-4 mvura yakakora, uye pa -40 ° С ine viscosity inosvika 1800 cSt.
Zvinocherechedzwa kuti nekuda kweiyo hydrophobic additives, DOT-4 mvura inotora mvura kubva kunharaunda zvishoma nezvishoma, ndiko kuti, inogara kwenguva pfupi.
DOT-3 uye DOT-4 inogona kusanganiswa here?
Pano tinotarisa kuenderana kwemakemikari ezvinwiwa. Pasina kupinda mune zvakadzama, tinogona kutaura izvi: zvese zvinwiwa zviri mubvunzo ndeye 98% glycols. Iyo yasara 2% inobva kune zvinowedzera. Uye pane izvi 2% zvezvakajairwa zvikamu, ingangoita hafu. Ndiko kuti, kusiyana kwemakemikari chaiwo hakupfuuri 1%. Kuumbwa kwezvinowedzera zvinofungidzirwa nenzira yekuti zvikamu hazvipindi mumakemikari ane ngozi, izvo zvinogona kukonzera kuderera kwekushanda kwemvura.
Kubva pane zvataurwa, tinogona kutora mhedziso isina kujeka: unogona kudurura DOT-4 zvakachengeteka muhurongwa hwakagadzirirwa DOT-3.
Zvisinei, DOT-3 mvura inonyanya kushatisa kune rabha uye zvikamu zvepurasitiki. Nokudaro, hazvidikanwi kuidururira mumasisitimu asina kugadziriswa. Nekufamba kwenguva, izvi zvinogona kuderedza hupenyu hweiyo braking system zvikamu. Muchiitiko ichi, hapazovi nemigumisiro yakaoma. Musanganiswa weDOT-3 uye DOT-4 hauzodonhedze mukuita zvivakwa zvakaderera pane diki yezviratidzo pakati pezvinwiwa zviviri izvi.
Uyewo teerera kune kuenderana kwemvura neABS. Yakave yakasimbiswa kuti DOT-3, iyo isina kugadzirwa kuti ishande neABS, ichashanda ne-anti-lock braking system. Asi mukana wekukundikana uye kuvuza kuburikidza nezvisimbiso zvevhavhavhavhavha ichawedzera.
