Unogona kusanganisa brake fluid?

Pakati pezvisingadhuri mabhureki zvinwiwa, vamiririri vaviri vanonyanya kuzivikanwa nhasi: DOT-3 uye DOT-4. Uye mota zhinji dzinofamba mumigwagwa yeRussian Federation dzinoda kushandiswa kwemakomisheni aya mumabhureki system. Zvadaro, tichaona kana zvichiita kusanganisa DOT-3 uye DOT-4 brake fluid.

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 kwayo kwepamusoro kusanganiswa nemvura pasina kuumbwa kwemvura.

Funga nezvemisiyano huru yekushanda.

1. Kupisa kupisa. Zvichida, kubva pakuona kwekuchengeteka, ichi ndicho chiratidzo chinonyanya kukosha. Iwe unogona kazhinji kuwana kusanzwisisa kwakadaro kunetiweki: brake fluid haigoni kuvira, sezvo pasina mhepo inopisa inopisa muhurongwa. Uye madhisiki nemadhiramu ari pachinhambwe chakakura zvakakwana kubva kune tongs nemasilinda kuendesa tembiricha kune yemvura vhoriyamu. Panguva imwecheteyo, ivo vanofefeterwawo nekuda kwekupfuura kwemhepo yemhepo. 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). Liquid DOT-3 ine poindi yekuvira inosvika +205°C.

1. Kudzikira kuvira kana kwatota. Mvura yeDOT-3 ichafashaira nekuunganidza hunyoro hwe3,5% nehuwandu patembiricha ye +140°C. DOT-4 yakanyanya kugadzikana panyaya iyi. Uye nechiyero chakafanana chehunyoro, haizoviriki pasina kupfuura mucherechedzo we + 155 ° C.
2. 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 tembiricha yakaderera viscosity ye1500 cSt. DOT-4 mvura yakakora uye ine viscosity ingangoita 40 cSt pa -1800°C.

Izvo zvakacherechedzwa kuti nekuda kweiyo hydrophobic additives, DOT-4 mvura inotora mvura kubva kunharaunda zvishoma nezvishoma, ndiko kuti, inoita zvishoma.

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% zvakajairika zvikamu, ingangoita hafu. Ndiko kuti, kusiyana kwemakemikari chaiwo hakupfuuri 1%. Kuumbwa kwezvinowedzera zvinogadzirwa nenzira yekuti zvikamu hazvipindi mumakemikari ane ngozi, izvo zvinogona kukonzera kuderera kwekushanda kwemvura.

Kubva pane zvataurwa, tinogona kutora mhedziso isina kujeka: sisitimu yakagadzirirwa DOT-3 inogona kuzadzwa zvakachengeteka neDOT-4.

Nekudaro, DOT-3 fluid inonyanya hutsinye kune rabha uye epurasitiki zvikamu. Naizvozvo, hazvidiwe kuizadza mune isina-yakagadziridzwa masisitimu. Nekufamba kwenguva, izvi zvinogona kupfupisa hupenyu hwemabhureki system zvikamu. Muchiitiko ichi, hapazovi nemigumisiro yakaoma. Musanganiswa weDOT-3 uye DOT-4 haungawire pasi pekuita kwakaderera pakati pezvinwiwa zviviri izvi.

Uyewo teerera kune kuenderana kwemvura neABS. DOT-3, iyo isina kugadzirirwa kushanda neABS, yakaedzwa kushanda ne-anti-lock braking systems. Asi izvi zvichawedzera mukana wekutadza uye kuvuza kuburikidza nevhavha block seals.