Conas ola forc a roghnĂș
Ăbhar
ĂsĂĄidtear forc-olaĂ chun feidhmĂocht forcanna tosaigh gluaisrothar agus maolaitheoirĂ turrainge a chothabhĂĄil. Creideann roinnt dĂograiseoirĂ gluaisteĂĄn fiĂș go bhfuil sĂ© inmholta tĂĄirgĂ den sĂłrt sin a dhoirteadh isteach i maolaitheoirĂ turrainge gluaisteĂĄin. BreathnaĂmid ar bhrandaĂ agus ar shaintrĂ©ithe an ghrĂșpa olaĂ seo.
CoinnĂollacha oibre forc ionsĂșire turrainge gluaisrothair
Is Ă© an forc tosaigh dhĂĄ phĂosa feadĂĄnacha fada a thacaĂonn le roth tosaigh an ghluaisrothar. Gluaiseann na codanna seo suas agus sĂos chun dromchlaĂ bĂłthair mĂchothrom a chĂșiteamh.
Murab ionann agus ionsĂșire turrainge gluaisteĂĄn, ceadaĂonn an tionĂłl earraigh an cos forc a chomhbhrĂș agus ansin rebound, feabhas a chur ar chĂĄilĂocht turas agus tarraingt. TĂĄ sprionga agus ola i ngach feadĂĄn forc tosaigh ar fhormhĂłr na ngluaisrothar. I lĂĄr an chĂ©id seo caite, bhĂ cosa forc ach earrach taobh istigh de phĂobĂĄn. Nuair a bhĂonn an t-earrach comhbhrĂșite ag tionchair, preabann tosaigh an ghluaisrothar.
Tar Ă©is forbairt an chĂłrais mhaolaithe, d'Ă©irigh prĂłiseas na gluaiseachta rebound seo i bhfad nĂos rianĂșla. Chun suaitĂ a mhaolĂș, ĂĄfach, nĂ mĂłr leacht do-chomhbhrĂșite a bheith sa chĂłras a fhĂ©adfaidh ualaĂ turrainge a ionsĂș go maith: ola forc. Is Ă© an dearadh is coitianta nĂĄ go bhfuil feadĂĄn le poill agus seomraĂ a rialaĂonn gluaiseacht ola taobh istigh de gach strut ionsĂșire turrainge.
Feidhmeanna agus Gnéithe
In ainneoin an raon leathan tĂĄirgĂ a thairgtear, tĂĄ go leor mĂchruinnis agus dĂ©bhrĂochtaĂ ina gcuspĂłir agus ina bparaimĂ©adar. Mar sin, ĂĄirĂtear ar na ceanglais feidhmĂochta le haghaidh olaĂ forc:
- RĂĄthaĂonn sĂ© an forc taiseadh is fearr agus feidhmĂocht chobhsaĂ thar raon teochta leathan.
- Neamhspleåchas saintréithe ola ó dhearadh forc.
- Cosc ar fhoirmiĂș cĂșr.
- Deireadh a chur le hĂ©ifeachtaĂ creimneach ar chodanna miotail den ionsĂșire turraing agus forc.
- Inertness ceimiceach an chomhdhéanamh.
Is sreabhĂĄin hiodrĂĄlacha iad gach branda dâolaĂ forc gluaisrothar, mar sin ag brath ar a gcĂĄilĂocht, is fĂ©idir fiĂș roinnt olaĂ tionsclaĂocha ginearĂĄlta de rĂ©ir GOST 20799-88 le slaodacht oiriĂșnach a ĂșsĂĄid. Tabhair faoi deara, de rĂ©ir mar a mhĂ©adaĂonn an slaodacht ola, go dtiocfaidh an forc ar ais go dtĂ a seasamh bunaidh nĂos moille. Ar an lĂĄimh eile, le mĂ©adĂș ar shlaodacht, tĂĄ trĂ©ithe feidhmĂochta an mhĂ©adaithe ola, go hĂĄirithe nuair a bhĂonn sĂ© ag tiomĂĄint ar bhĂłithre garbh, le haghaidh gluaisrothair motocross.
Conas ola forc a roghnĂș?
GcĂ©ad dul sĂos, mar gheall ar a slaodacht. Mar is eol, dĂ©antar slaodacht chinĂ©imiteach a thomhas i gcentistokes (cSt) agus is ionann Ă© agus luas an tsreafa sreabhĂĄn trĂ phĂobĂĄn traidisiĂșnta de thrasghearradh ĂĄirithe. Go praiticiĂșil, is Ă© mm2/s an toise is coitianta a ĂșsĂĄidtear.
TĂĄ olaĂ forc faoi rĂ©ir chaighdeĂĄin Chumann MeiriceĂĄnach na nInnealtĂłirĂ Feithicleach (SAE) a bhaineann luachanna slaodachta ag teocht ar leith (40 ° C go hiondĂșil) le dlĂșs agus meĂĄchan an tĂĄirge. MeĂĄchan i mBĂ©arla meĂĄchan; DĂorthaĂtear ainmniĂșchĂĄin do bhrandaĂ ola forc Ăł litir tosaigh an fhocail seo. Mar sin, agus tĂș ag smaoineamh ar olaĂ le haghaidh forcanna gluaisrothar de bhrandaĂ 5W, 10W, 15W, 20W, etc., ba cheart duit cuimhneamh, mar shampla.
Cinntear meĂĄchan ola forc ag caighdeĂĄn tionscail a ĂșsĂĄidtear i gcĂłrais hiodrĂĄlacha ar a dtugtar Saybolt Seconds Universal (SSU). Ar an drochuair, is minic a bhĂonn mearbhall ar lipĂ©id forc ola mar thoradh ar thoiliĂșlacht na monarĂłirĂ mĂłra. BunaĂodh an comhfhreagras seo a leanas maidir le paraimĂ©adair slaodachta go turgnamhach:
CĂĄilĂocht | Luach slaodachta iarbhĂr, mm2/s ag 40 °C, de rĂ©ir ASTM D 445 do thĂĄirgĂ brandĂĄilte | |||
Turraing carraige | moluibdĂn leachtach | Motul | Motorex RĂĄsaĂocht Forc Ola | |
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 |
Cad is féidir a chur in ionad ola forc?
Chun an ola a chalabrĂș, ĂșsĂĄidtear scĂĄla slaodachta i bhfad nĂos Ăogaire, mar sin go praiticiĂșil is fĂ©idir leat coinnĂollach 7,5W nĂł 8W âduit fĂ©inâ a fhĂĄil trĂ olaĂ tionsclaĂocha coitianta a mheascadh sna comhrĂ©ireanna riachtanacha.
Maidir le feidhmĂocht tĂĄirge faoi choinnĂollacha oibriĂșchĂĄin sonracha, nĂ hĂ© an luach slaodachta fĂ©in atĂĄ tĂĄbhachtach, ach an t-innĂ©acs slaodachta mar a thugtar air. De ghnĂĄth cuirtear in iĂșl Ă© ar scĂĄla Saybolt Seconds Universal (SSU) ag 100°C. Ligean le rĂĄ na huimhreacha ar an gcoimeĂĄdĂĄn a lĂ©amh 85/150. CiallaĂonn sĂ© seo gurb Ă© luach SSU na hola ag 100°C nĂĄ 85. Tomhaistear slaodacht na hola ansin ag 40°C. Is Ă© an dara uimhir, 150, an luach a lĂ©irĂonn an difrĂocht sreafa idir an dĂĄ theocht, a chinneann an t-innĂ©acs slaodacht luaite.
Cad a chaithfidh sĂ© seo a dhĂ©anamh le forcanna gluaisrothar? MĂ©adaĂonn an frithchuimilt a chruthaĂonn sleamhnĂĄin pĂĄirteanna miotail agus gluaiseacht ola ar ais agus amach an teocht taobh istigh den tionĂłl. DĂĄ tairiseach a fhanann an meĂĄchan ola, is lĂș an seans go n-athrĂłidh an taiseadh forc.
Mar sin, is fĂ©idir go leor ola forc a chur in ionad ola thionsclaĂoch, ag comhcheangal a chineĂĄlacha de rĂ©ir coinnĂollacha oibriĂșchĂĄin do ghluaisrothar.
Le hĂĄirithintĂ ĂĄirithe, is fĂ©idir an prionsabal seo a ĂșsĂĄid le haghaidh feithiclĂ eile (cĂ© is moite de ghluaisrothair rĂĄsaĂochta).