Kodi madzi a brake amaundana pa kutentha kotani?
Zamkatimu
Brake fluid kuzizira malo malinga ndi muyezo
Ndikofunika kumvetsetsa kuti palibe njira yokhazikika yopangira madzi amadzimadzi. Muyezo wopangidwa ndi kukhazikitsidwa ndi US department of Transportation (DOT) umafotokoza zofunikira zamadzimadzi pamakina a hydraulic brake system. Koma palibe malire okhwima kapena mafelemu.
Mwachitsanzo, pa malo otentha a brake fluid, malire apansi okha amasonyezedwa. Pazinthu zodziwika bwino za DOT-4 ku Russia, chiwerengerochi sichitsika kuposa +230 ° C. M'malo mwake, kuwira kwenikweni kwamadzimadzi amtundu wa DOT-4 omwe samapangidwa ndi madzi nthawi zambiri kumapitilira +260 ° C.
Mkhalidwe wofananawo umawonedwa ndi kutsanulira. Muyezo umawongolera osati kuzizira kokha, koma kukhuthala kwa -40 ° C chisanu. Gome ili m'munsimu likufotokoza mwachidule kukhuthala kovomerezeka kovomerezeka pa kutentha kumeneku kwamadzimadzi amabuleki.
| Dontho-3 | 1500 cSt |
| Dontho-4 | 1800 cSt |
| Dontho-5 | 900 cSt |
| Dontho-5.1 | 900 cSt |
Zinthu zonsezi ndizovomerezeka pakugwirira ntchito kwa ma brake system opangira madzi enaake pa kutentha mpaka -40 ° C. Kuti mugwire ntchito pamatenthedwe otsika, muyezo wa DOT wamba suli ndi udindo. Kwa nyengo zowopsa kwambiri, mitundu yosinthidwa yamadzimadzi a brake apangidwa, momwe amagogomezera kwambiri kutsika kwa kutentha.
Kuzizira kwenikweni ndi tanthauzo lake lenileni
Brake fluid imagwira ntchito ngati chonyamulira mphamvu kuchokera ku silinda ya master brake kupita kwa ogwira ntchito. Mukakanikiza chopondapo cha brake, kukakamiza kumapangidwa mu silinda yayikulu ya torus, yomwe imafalikira pamzere, imagwira ma pistoni a ma silinda ogwirira ntchito ndikukankhira mapepalawo ku ma disc.
Pamene mamasukidwe ena akafika, madzi sadzatha kudutsa mizere yopapatiza ndi yaitali. Ndipo mabuleki adzalephera, kapena ntchito yawo idzakhala yovuta kwambiri. Malinga ndi kuyerekezera kosiyanasiyana, pamakina osiyanasiyana, gawo ili liri mumtundu wa 2500-3000 cSt.
Kodi madzi a brake amaundana pa kutentha kotani? Maukonde ali ndi zoyeserera zambiri ndi kuziziritsa kwamadzimadzi osiyanasiyana amabuleki pansipa -40 ° C. Zomwe zimachitika ndi izi: madzi onse, akamadutsa kutentha kwakukulu, amakhalabe amadzimadzi, ndipo mwachidziwitso adzagwira ntchito bwino mu dongosolo la brake. Komabe, kukhuthala kwamadzi otsika mtengo komanso njira zotsika za DOT zimakula mwachangu pakuzizira.
Ikafika pa -50 ° C chizindikiro, DOT-3 ndi DOT-4 zambiri zimasandulika uchi kapena kuumitsa kuchulukira (zosankha zotsika mtengo). Ndipo izi ndi momwe zimakhalira kuti madziwo ndi atsopano, osati olemetsedwa ndi madzi. Kukhalapo kwa madzi kumachepetsa kuzizira kwa 5-10 ° C.
Silicone brake fluids ndi ma formulations otengera polyglycols (DOT-5.1) samva kuzizira. Komabe, ngakhale zamadzimadzi zimenezi zimakhuthala kwambiri kuyandikira -50°C. Ndipo ndizovuta kunena ngati angagwire ntchito m'machitidwe omwe amapangidwira otsika-makayendedwe amadzimadzi a brake fluid.
Choncho, mfundo imodzi yokha ingapezeke: zimatsimikiziridwa kuti brake fluid sichidzazizira pa kutentha mpaka -40 ° C, monga momwe zilili muyeso.
