Yawan man inji. Menene sigogi ya dogara da su?
Abubuwa
Maɗaukakin Maɗaukakin Maɗaukaki
Yawan mai na mota ya bambanta a matakin 0,68-0,95 kg/l. Man shafawa tare da nuna alama sama da 0,95 kg / l ana rarraba su azaman babban yawa. Wadannan mai suna rage damuwa na inji a cikin watsawa na hydraulic ba tare da asarar aiki ba. Duk da haka, saboda ƙãra yawa, mai mai ba ya shiga cikin wuraren da ke da wuyar isa na piston cylinders. A sakamakon haka: nauyin da ke kan tsarin crank (crankshaft) yana ƙaruwa. Hakanan amfani da man mai yana ƙaruwa kuma ajiyar coke yana karuwa akai-akai.
Bayan shekaru 1,5-2, man shafawa yana ƙaddamar da 4-7% na ainihin darajarsa, wanda ke nuna buƙatar maye gurbin mai.
Low yawa man mai
Rage ma'auni mai girma da ke ƙasa da 0,68 kg/l shine saboda gabatarwar ƙazantattun ƙazanta, misali, paraffins masu nauyi. Man shafawa marasa inganci a cikin irin wannan yanayin yana haifar da saurin lalacewa na abubuwan injin hydromechanical, wato:
- Ruwan ba shi da lokacin da zai sa mai saman hanyoyin motsi kuma yana gudana cikin crankcase.
- Ƙara yawan ƙonawa da coking akan sassan ƙarfe na injin konewa na ciki.
- Dumama hanyoyin wutar lantarki saboda karuwar karfin juzu'i.
- Ƙara yawan amfani da mai.
- Tace mai datti.
Saboda haka, don daidai aiki na ligament "Silinda-piston" engine man na mafi kyau duka yawa ake bukata. An ƙayyade ƙimar don takamaiman nau'in injin kuma ana bada shawarar bisa ga rarrabuwar SAE da API.
Tebur na yawa na man fetur na motar hunturu
Lubricants da aka nuna ta index 5w40-25w40 an rarraba su azaman nau'in hunturu (W - Winter). Yawan irin waɗannan samfuran sun bambanta a cikin kewayon 0,85-0,9 kg / l. Lambar da ke gaban "W" tana nuna yanayin zafin da ake juya piston cylinders da juyawa. Lambobi na biyu shine ma'aunin danko na ruwan zafi. Ma'anar ma'auni na 5W40 mai mai shine mafi ƙasƙanci tsakanin nau'in hunturu - 0,85 kg / l a 5 ° C. Irin wannan samfurin na aji 10W40 yana da darajar 0,856 kg / l, kuma don 15w40 siga shine 0,89-0,91 kg / l.
Babban darajar SAE | Yawan yawa, kg/l |
5w30 | 0,865 |
5w40 | 0,867 |
10w30 | 0,865 |
10w40 | 0,865 |
15w40 | 0,910 |
20w50 | 0,872 |
Yawan man injin da aka yi amfani da shi
Bayan shekaru 1-2 na amfani, kayan aikin jiki na lubricants na fasaha sun lalace. Launin samfurin ya bambanta daga rawaya mai haske zuwa launin ruwan kasa. Dalili shine samuwar samfuran lalacewa da bayyanar gurɓataccen abu. Asphaltenes, abubuwan da suka samo asali na carbene, da soot mai hana wuta sune manyan abubuwan da ke haifar da hatimin kayan shafawa na fasaha. Misali, ruwa aji 5w40 tare da ƙimar ƙima na 0,867 kg / l bayan shekaru 2 yana da ƙimar 0,907 kg / l. Ba shi yiwuwa a kawar da gurɓataccen tsarin sinadarai wanda ke haifar da canji a cikin yawan man inji.
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