Ndi mitundu yanji ya brake fluid?

Popanda mabuleki madzi, kungakhale kosatheka kuyimitsa galimoto yanu bwinobwino. Mabureki amadzimadzi amayenda m'mapaipi angapo a mabuleki ndi mizere ngati hydraulic fluid-madzimadzi omwe amadutsa m'malo otsekeka atapanikizika. Imasamutsa mphamvu ya brake pedal kupita ku ma brake calipers kapena ng'oma kuti galimoto isasunthe.

Brake fluid ndiyofunikira kwambiri pama braking system ndipo iyenera kugwira ntchito yake pamavuto. Malinga ndi National Highway Traffic Safety Administration (NHTSA) Department of Transportation, brake fluid iyenera kuyesedwa kuti ikwaniritse miyezo inayi:

1. Khalani madzi pa kutentha otsika; sayenera kuumitsa akaumitsa.
2. Kukana kuwira (ndi evaporation) pa kutentha kwambiri.
3. Gwirani ntchito ndi mbali zina za ma brake system ndi ma brake fluids.
4. Chepetsani kuwonongeka kwa ma brake system.

Akayesedwa, madzi onse amabuleki amasankhidwa DOT (ya Dipatimenti Yoyendetsa) ndi nambala yomwe imayimira malo otentha kwambiri. Magalimoto ambiri ku America amagwiritsa ntchito hygroscopic DOT 3 kapena 4, zomwe zikutanthauza kuti amatenga chinyezi kuchokera mumlengalenga. Matanki akuluakulu a silinda nthawi zambiri amakhala opanda kanthu ngati izi ziyamba kuchitika. Asamatsegulidwe pokhapokha ngati kuli kofunikira kuti apewe kuwonongeka msanga chifukwa cha kuyamwa kwa kutentha ndi chinyezi. Ngakhale izi zimachitika mwachibadwa pamene mabuleki, kufulumizitsa ndondomekoyi kumawonjezera mapangidwe a dzimbiri ndi zinyalala mu dongosolo la brake lomwe limapangidwa ndi kuchuluka kwa acidic brake fluid.

Pali mitundu ingapo ya ma brake fluid: DOT 3, DOT 4 ndi DOT 5, komanso magulu angapo. Nthawi zambiri, kutsika kwa chiwerengerocho, kumachepetsanso kuwira.

MFUNDO 3

DOT 3 brake fluids ndi glycol-based and amber in color. Ali ndi malo owira otsika kwambiri, kutanthauza kuti amawira akapsa, ndipo amawira powira, kapena kutentha kumene madzi amawira akawola.

• Malo otentha: 401 digiri Fahrenheit
• Kuwira kwachepetsedwa: 284 digiri Fahrenheit

Chifukwa DOT 3 ndi hygroscopic, iyenera kusinthidwa zaka zingapo kuti ikhale yogwira ntchito.

MFUNDO 4

Opanga magalimoto a ku Ulaya makamaka amagwiritsa ntchito madzi a brake DOT 4. Ngakhale kuti imakhalanso ndi glycol, imakhala ndi malo otentha kwambiri chifukwa cha zowonjezera za borate ester, zomwe zimachepetsa kuchuluka kwa asidi omwe amapangidwa pamene chinyezi chimalowa. DOT 4 nthawi zambiri imawononga kuwirikiza kawiri kuposa DOT 3 kuphimba mankhwala owonjezera. Amagwira ntchito bwino kuposa madzi a DOT 3 koyambirira, koma kuwira kwawo kumatsika mofulumira m'kupita kwanthawi.

• Malo otentha: Kuyambira pa madigiri 446 Fahrenheit.
• Kuwira kwachepetsedwa: 311 digiri Fahrenheit

DOT 4 ikugwiritsidwa ntchito kwambiri m'nyumba, koma imakhala yofala kwambiri m'magalimoto aku Europe. Imabwera m'magulu osiyanasiyana, monga DOT 4, yomwe imakhala ndi kukhuthala kochepa (kumamata), ndi DOT 4 Racing, yomwe nthawi zambiri imakhala ya buluu kusiyana ndi amber mumtundu. Ngakhale itha kusakanikirana ndi DOT 3, nthawi zambiri pamakhala phindu lochepa kapena kusiyana kosintha.

MFUNDO 5

DOT 5 brake fluid ndi silicone-based, nthawi zambiri imakhala ndi utoto wofiirira, ndipo imakhala yofanana ndi DOT 4. Ili ndi malo otentha kwambiri ndipo sichimamwa madzi monga mitundu ina ya brake fluid. DOT 5 siigwira ntchito bwino pamakina ena amabuleki chifukwa imatulutsa thovu ndikupanga thovu la mpweya lomwe limapangitsa kuti ma brake amveke. Kuonjezera apo, popeza sichimamwa chinyezi, madzi aliwonse omwe amalowa m'dongosolo amawononga mwamsanga ndikulimbikitsa kuzizira kapena kuwira pa kutentha kosavomerezeka.

• Dothi lowira: 500 digiri Fahrenheit.
• Malo otentha otentha: 356 digiri Fahrenheit.

Chifukwa cha mawonekedwe ake osiyanasiyana, DOT 5 sayenera kusakanikirana ndi ma brake fluids. Zimapangidwira magalimoto omwe amasungidwa kwa nthawi yaitali, monga asilikali, ndipo amatha kugwira ntchito nthawi yomweyo ngati akufunikira. Ngakhale kuti ili ndi malo otentha kwambiri komanso anti-corrosion, opanga magalimoto amapewa kugwiritsa ntchito silicone-based brake fluid chifukwa cha kusungunuka kwake kochepa mu mpweya ndi madzi.

MFUNDO 5.1

DOT 5.1 ili ndi malo otentha ofanana ndi a DOT 4 racing fluids, glycol base, ndi amber wowala kupita ku translucent color scheme. DOT 5.1 kwenikweni ndi chemistry-based DOT 4 brake fluid yomwe imakwaniritsa zofunikira za DOT 5.

• Dothi lowira: 500 digiri Fahrenheit.
• Malo otentha otentha: 356 digiri Fahrenheit.

Zitha kukhala zokwera mtengo kuwirikiza ka 14 kuposa DOT 3, koma mwaukadaulo zitha kusakanikirana ndi zonse za DOT 3 ndi DOT 4 zamadzimadzi.

MFUNDO 2

Osagwiritsidwa ntchito kwambiri pamsika wamagalimoto, DOT 2 brake fluid ndi mafuta amchere ndipo amakhala ndi malo otentha otsika komanso owuma. Kwenikweni, kuwira kwake kowuma ndiko kuwira konyowa kwa DOT 5 ndi DOT 5.1 brake fluids.

• Dothi lowira: 374 digiri Fahrenheit.
• Malo otentha otentha: 284 digiri Fahrenheit.

Kodi ndigwiritse ntchito mtundu wanji wa brake fluid?

Ma brake fluid akale amatha kutseka machitidwe chifukwa cha dzimbiri kapena kusungitsa ndalama ndipo amafuna kusinthidwa pafupipafupi. Nthawi zonse tchulani malingaliro a wopanga galimoto yanu pankhani yosankha brake fluid. Mabuleki amadzimadzi amayeneranso kuwongoleredwa kapena kusinthidwa malinga ndi malingaliro a wopanga.

Brake fluid iyenera kuyendetsedwa mosamala nthawi zonse. Zimawononga kwambiri ndipo zimawononga utoto ndi zokutira zina zikatayika. Zitha kukhalanso zovulaza ngati zitamezedwa, choncho kukhudzana ndi khungu kapena maso kuyenera kupeŵedwa. Mukatsuka ma brake system, onetsetsani kuti mabuleki atsopano omwe agwiritsidwa ntchito akusungidwa bwino komanso kuti madzi akale atayidwa bwino. Mwiniwake wamagalimoto wamba adzafunika DOT 3, DOT 4 kapena DOT 5.1 pagalimoto yawo, koma nthawi zonse amadalira zomwe zidapangidwa ndi fakitale kuwonetsetsa kuti mabuleki anu akuyenda bwino.