Indlela yokukhetha amafutha omfoloko

Amafutha emfoloko asetshenziselwa ukugcina ukusebenza kwezimfoloko zangaphambili zesithuthuthu kanye nama-shock absorbers. Abanye abashayeli baze bakholelwa ukuthi kungcono ukuthululela izimali ezinjalo ku-absorbers yemoto. Ake sibone izinhlobo nezici zaleli qembu lamafutha.

Izimo zokusebenza zemfoloko yokudonsa isithuthuthu

Imfoloko yangaphambili izingxenye ezimbili zamashubhu ezinde ezisekela isondo langaphambili lesithuthuthu. Lezi zingxenye zehla zenyuka ukuze zinxephezele izindawo zomgwaqo ezingalingani.

Ngokungafani nokushaqeka kwemoto, umhlangano wasentwasahlobo uvumela umlenze wemfoloko ukuba ucindezele bese uphinde ubophe, okuthuthukisa ukugibela nokudonsa. Ishubhu ngayinye yemfoloko yangaphambili ezithuthuthu eziningi iqukethe isiphethu namafutha. Maphakathi nekhulu leminyaka elidlule, imilenze yemfoloko yayiwumthombo nje ngaphakathi kwepayipi. Lapho intwasahlobo icindezela emithelela, ingaphambili lesithuthuthu liyabhampa.

Ngemuva kokuthuthukiswa kwesistimu yokudambisa, inqubo yokunyakaza okunjalo kwe-rebound yaba lula kakhulu. Kodwa-ke, ukuze unciphise ukushaqeka, kufanele kube noketshezi olungenakucindezelwa ohlelweni olukwazi ukumunca kahle imithwalo yokushaqeka: uwoyela wemfoloko. Umklamo ovame kakhulu uneshubhu ngaphakathi kwe-absorber eshaqisayo ngayinye enezimbobo namakamelo alawula ukuhamba kwamafutha.

Imisebenzi kanye nezici

Naphezu kohlu olubanzi lwemikhiqizo enikezwayo, kuningi okunganembile nokungaqondakali enjongweni yayo kanye nemingcele. Ngakho-ke, izidingo zokusebenza zamafutha emfoloko zifaka:

1. Iqinisekisa ukudameka kwemfoloko nokusimama ebangeni elibanzi lokushisa.
2. Ukuzimela kwezici zamafutha kusuka kumklamo wemfoloko.
3. Ukuvimbela ukwakheka kwegwebu.
4. Ukukhishwa kwemiphumela elimazayo ezingxenyeni zensimbi ze-shock absorber nemfoloko.
5. Ukungangeni kwekhemikhali kokwakheka.

Zonke izinhlobo zamafutha omfoloko wesithuthuthu ziwuketshezi olunamanzi, ngakho-ke, kuye ngekhwalithi yawo, ngisho namanye amafutha ezimboni anenhloso ejwayelekile ngokweGOST 20799-88 ane-viscosity efanelekile angasetshenziswa. Sicela uqaphele ukuthi njengoba i-viscosity yamafutha ikhula, imfoloko izobuyela endaweni yayo yasekuqaleni kancane kancane. Ngakolunye uhlangothi, njengoba i-viscosity ikhula, ukusebenza kwamafutha kuyanda, ikakhulukazi lapho ushayela emigwaqweni emibi, yezithuthuthu ze-motocross.

Ungakhetha kanjani uwoyela wemfoloko?

Okokuqala, ngenxa ye-viscosity yayo. Njengoba wazi, i-kinematic viscosity ikalwa ngama-centistoke (cSt) futhi imele izinga lokugeleza koketshezi ngepayipi elinemibandela lesigaba esithile. Empeleni, ubukhulu obusetshenziswa kakhulu ngu-mm2/s.

Amafutha emfoloko angaphansi kwamazinga e-American Society of Automotive Engineering (SAE), ahlobene namanani e-viscosity ezingeni lokushisa elinikeziwe (imvamisa engu-40°C) nokuminyana komkhiqizo nesisindo. Isisindo ngesiNgisi isisindo; Kusukela kuhlamvu lokuqala lwaleli gama, kwakhiwa amagama emikhiqizo yamafutha emfoloko. Ngakho-ke, uma ucabangela amafutha ezimfoloko zesithuthuthu ze-brand 5W, 10W, 15W, 20W, njll., kufanele kukhunjulwe ukuthi, isibonelo.

Inqwaba yamafutha emfoloko inqunywa izinga lemboni elisetshenziswa ezinhlelweni zokudonsa amanzi okuthiwa i-Saybolt Seconds Universal (SSU). Ngeshwa, ukuzimisela kwabakhiqizi abakhulu kuvame ukuholela ekudidekeni kumalebula kawoyela wemfoloko. Ukuxhumana okulandelayo kwamapharamitha we-viscosity kwasungulwa ngokuhlolwa:

Izimfanelo	Inani langempela le-viscosity, mm2/s ku-40 °C, ngokuya nge-ASTM D 445 ngemikhiqizo enezimpawu
Ukushaqeka kwedwala	i-molybdenum ewuketshezi	I-Motul	Motorex racing fork amafutha
5 W	16.1	17.2	18	15.2
10 W	33	29,6	36	32
15 W	43,8	43,9	57	46
20 W	-	-	77,9	68

Yini engathatha indawo kawoyela wemfoloko?

Isikali se-viscosity esibucayi kakhulu sisetshenziselwa ukulinganisa uwoyela, ngakho-ke ngokuzijwayeza ungathola i-7,5W noma i-8W evamile "ngokwakho" ngokuxuba amafutha ezimboni ezivamile ngezilinganiso ezidingekayo.

Ukusebenza komkhiqizo ezimweni ezithile zokusebenza, akulona inani le-viscosity ngokwalo elibalulekile, kodwa lokho okubizwa ngokuthi inkomba ye-viscosity. Ivamise ukuvezwa ku-Saybolt Seconds Universal Scale (SSU) ngo-100°C. Ake sithi izinombolo eziku-container zifundeka 85/150. Lokhu kusho ukuthi inani le-SSU lamafutha ku-100 ° C lingu-85. I-viscosity yamafutha ilinganiswa ku-40 ° C. Inombolo yesibili, 150, iyinani elibonisa umehluko wezinga lokugeleza phakathi kwamazinga okushisa amabili, okunquma inkomba ye-viscosity efunwayo.

Lokhu kuhlangene ngani nezimfoloko zesithuthuthu? Ukungqubuzana okudalwe ukushelela kwezingxenye zensimbi kanye nokunyakaza kwamafutha emuva naphambili kwandisa izinga lokushisa ngaphakathi komhlangano. Uma isisindo sikawoyela sihlala singashintshile, mancane amathuba okuthi ukudambisa imfoloko kuzoshintsha.

Ngakho-ke, kungenzeka ukushintsha uwoyela wemfoloko namafutha ezimbonini ngokuhlanganisa amamaki awo ngokuya ngezimo zokusebenza zesithuthuthu sakho.

Ngokubhukha okuthile, lesi simiso singasetshenziselwa ezinye izimoto (ngaphandle kwezithuthuthu zomjaho).