Mhando dzebrake fluid
Zviri mukati
Glycolic zvinwiwa
Iyo yakawanda yakawanda yemabhureki emvura anoshandiswa mumotokari dzemazuva ano anobva pane glycols uye polyglycols nekuwedzera kwechikamu chidiki chekugadzirisa zvikamu. Glycols dihydric alcohols ine inodiwa seti yehunhu hwakakodzera kushanda mune hydraulic braking system.
Zvakaitika kuti pakati pezvikamu zvakasiyana-siyana zvakagadzirwa mumasangano akasiyana-siyana, zvakasiyana kubva kuAmerican Department of Transportation (DOT) zvakadzika midzi. Zvese zvinodiwa paDOT-marked brake fluids zvinotsanangurwa muFMVSS No. 116.
Parizvino, matatu makuru emhando dzemabhureki emvura anoshandiswa pamotokari dzinoshandiswa muRussian Federation.
- DOT-3. Iyo ine 98% glycol base, iyo yasara 2% inogarwa nezvinowedzerwa. Iyi brake fluid haiwanzo kushandiswa nhasi uye yakatove yakatsiviwa zvachose nechizvarwa chinotevera cheDOT mutsara. Mumamiriro akaoma (pasina kuvapo kwemvura muhuwandu) inovira kwete kare kupfuura isati yasvika kutonhora kwe +205 ° C. Pa -40 ° C, viscosity haipfuuri 1500 cSt (yakakwana yekushanda kwemaitiro ekugadzirisa mabhureki). Mune hunyoro, ine 3,5% yemvura muhuwandu, inogona kufashaira nechekare patembiricha ye +150 ° C. Kune mabhureki masisitimu emazuva ano, ichi chikumbaridzo chakaderera. Uye hazvidiwe kushandisa iyi mvura panguva yekutyaira, kunyangwe iyo automaker ichibvumira. Iine huturu hwemakemikari ane chekuita nependi nemavarnish, pamwe nemapurasitiki uye zvigadzirwa zverabha zvisina kukodzera kushanda nemabhesi eglycol.
- DOT-4. Panyaya yekugadzirwa kwemakemikari, chiyero chechigadziko nekuwedzera chinenge chakangofanana nechekare chechizvarwa chemvura. DOT-4 mvura ine yakawedzera kufashaira poindi zvese zviri mufomu yakaoma (inenge +230 ° C) uye mune yakanyorova fomu (inenge +155 ° C). Zvakare, hutsinye hwemakemikari hwakaderedzwa nekuda kwekuwedzera. Nekuda kwechinhu ichi, makirasi ekutanga emvura haakurudzirwe kushandiswa mumotokari umo iyo braking system yakagadzirirwa DOT-4. Kusiyana nekutenda kwakakurumbira, kuzadza mumvura isiriyo hakuzokonzeri kukanganisa kwakangoerekana kwaitika kwehurongwa (izvi zvichaitika chete kana paine kukuvara kwakanyanya kana pedyo-yakakosha), asi zvinogona kuderedza zvakanyanya hupenyu hwezvinhu zvinoshanda zveiyo brake system. akadai satenzi nemasirinda evaranda. Nekuda kwekupfuma kwekuwedzera pasuru, iyo inobvumidzwa viscosity pa -40 ° C yeDOT-4 yakawedzera kusvika 1800 cSt.
- DOT-5.1. High-tech brake fluid, musiyano mukuru weiyo yakaderera viscosity. Pa -40 ° C, kinematic viscosity inongova 900 cSt. DOT-5.1 kirasi fluid inoshandiswa zvakanyanya mukutakura mabhureki masisitimu, uko kunokurumidza uye kwakaringana mhinduro inodiwa. Haifashaidzi isati yasvika +260°C kana yakaoma, uye icharamba yakatsiga kusvika +180°C kana yanyorova. Izvo hazvikurudzirwe kuzadza mumotokari dzevanhu vakagadzirirwa mamwe zviyero zvemabhureki fluid.
Yese glycol-based liquids is hygroscopic, kureva kuti, inounganidza hunyoro kubva kumhepo yemuchadenga muhuwandu hwayo. Naizvozvo, zvinwiwa izvi, zvinoenderana nemhando yekutanga uye mamiriro ekushanda, zvinoda kuchinjwa kamwechete pamakore 1-2.
Iwo chaiwo maparamendi emazuva ano mabhureki emvura mune mazhinji akakwira zvakanyanya kupfuura zvinodiwa. Izvi ndezvechokwadi kunyanya kune yakajairika DOT-4 kirasi zvigadzirwa kubva premium chikamu.
DOT-5 Silicone Brake Fluid
Iyo silicone base ine akati wandei mabhenefiti pamusoro pechinyakare glycol base.
Kutanga, inonyanya kupikisa kune tembiricha yakaipa uye ine yakaderera viscosity pa -40 ° C, chete 900 cSt (yakafanana neDOT-5.1).
Chechipiri, masilicones haanyanyi kunetseka nekuunganidza mvura. Pazvishoma, mvura musilicone brake fluid haina kunyungudika zvakare uye kazhinji inonaya. Izvi zvinoreva kuti mukana wekungofashaira wakaerekana wave wakadzikira. Nechikonzero chimwe chete, hupenyu hwesevhisi hwemvura yakanaka silicone hunosvika makore mashanu.
Yetatu, iyo yakakwirira-yekushisa maitiro eDOT-5 mvura iri pamwero wetekinoroji DOT-5.1. Kubikira munzvimbo yakaoma - isiri pasi pe +260 ° C, ine zvinyorwa zve 3,5% yemvura muhuwandu - kwete pasi pe +180 ° C.
Iyo inonyanya kukanganisa ndeye yakaderera viscosity, iyo inowanzo tungamira kune yakawandisa kuvuza kunyangwe nekupfeka kushoma kana kukuvadzwa kwerubha zvisimbiso.
Vamwe vanogadzira mota vakasarudza kugadzira mabhureki masisitimu emvura yesilicone. Uye mumotokari idzi, kushandiswa kweimwe bunkers kunorambidzwa. Nekudaro, silicone brake fluid inogona kushandiswa pasina zvirambidzo zvakakomba mumotokari dzakagadzirirwa DOT-4 kana DOT-5.1. Muchiitiko ichi, zvinodikanwa kuti ubvise zvachose chigadziro uye kutsiva zvisimbiso (kana zvichibvira) kana yekare, zvikamu zvakasakara musangano. Izvi zvinoderedza mukana wekudonha kusiri kwekukurumidza nekuda kweiyo yakaderera viscosity yesilicone brake fluid.
