Injini yemafuta density. Ndeapi maparameter anoenderana nazvo?
Zviri mukati
High Density Lubricants
Kuwanda kwemafuta emotokari kunosiyana pamwero we 0,68-0,95 kg / l. Mafuta ekuzora ane chiratidzo pamusoro pe 0,95 kg / l anoiswa seyakanyanya density. Aya mafuta anoderedza kushushikana kwemakanika mu hydraulic transmission pasina kurasikirwa kwekuita. Nekudaro, nekuda kwekuwedzera kuwanda, iyo lubricant haipindi munzvimbo dzakaoma-kusvika-dzemapiston cylinders. Somugumisiro: mutoro uri pa crank mechanism (crankshaft) inowedzera. Kushandiswa kwemafuta kunowedzerawo uye coke deposits fomu kazhinji.
Mushure memakore 1,5-2, lubricant inogadziriswa ne 4-7% yehuwandu hwayo hwepakutanga, iyo inoratidza kudiwa kwekutsiva lubricant.
Low density mota mafuta
Kuderera kwe-mass-volume parameter iri pasi pe 0,68 kg / l kunokonzerwa nekuiswa kwekusvibiswa kwepasi-density tsvina, semuenzaniso, parafini shoma. Mafuta asina kunaka mune yakadai anotungamira mukupfeka nekukurumidza kweiyo hydromechanical zvinhu zveinjini, zvinoti:
- Iyo mvura haina nguva yekuzora pamusoro pemafambisirwo emagetsi uye inoyerera ichipinda mu crankcase.
- Kuwedzera kutsva uye kubika pamativi esimbi einjini yekupisa yemukati.
- Kupisa kwemaitiro emagetsi nekuda kwekuwedzera kwesimba rekukwesha.
- Kuwedzera kushandiswa kwemafuta.
- Masefa emafuta akasviba.
Nokudaro, nokuda kwekushanda kwakarurama kwe "cylinder-piston" ligament, mafuta ejini yehutano hwakakwana hunodiwa. Iko kukosha kunotemerwa kune chaiyo injini mhando uye inokurudzirwa zvinoenderana neSAE uye API kupatsanura.
Tafura ye density yechando mota mafuta
Mafuta anoratidzwa neindex 5w40–25w40 anoiswa semhando dzechando (W - chando) Kuwanda kwezvigadzirwa zvakadaro kunosiyana muhuwandu hwe 0,85-0,9 kg / l. Nhamba iri pamberi pe "W" inoratidza tembiricha iyo mapiston cylinders anotenderedzwa nekutenderedzwa. Chechipiri digit ndiyo viscosity index yemvura inopisa. Iyo density index ye5W40 class lubricant ndiyo yakaderera pakati pemhando dzechando - 0,85 kg / l pa5 ° C. Chigadzirwa chakafanana chekirasi ye10W40 ine kukosha kwe 0,856 kg / l, uye ye15w40 iyo parameter ndeye 0,89-0,91 kg / l.
| SAE injini yemafuta giredhi | Density, kg/l |
| 5w30 | 0,865 |
| 5w40 | 0,867 |
| 10w30 | 0,865 |
| 10w40 | 0,865 |
| 15w40 | 0,910 |
| 20w50 | 0,872 |
Tafura inoratidza kuti chiratidzo chechando chemafuta emaminerari chinoshanduka pachiyero che 0,867 kg / l. Paunenge uchishanda zvinwiwa zvekuzora, zvakakosha kutarisa kutsauka mu density paramita. A yenguva dzose hydrometer ichabatsira kuyera kukosha.
Injini yemafuta density yakashandiswa
Mushure memakore 1-2 ekushandiswa, maitiro emuviri emagetsi ekugadzira anoderera. Rudzi rwechigadzirwa runosiyana kubva kune yero yero kusvika kune brown. Chikonzero ndechekuumbwa kwezvigadzirwa zvekuora uye kuonekwa kwezvakasvibiswa. Asphaltenes, carbene derivatives, pamwe chete nemoto soot ndizvo zvinhu zvikuru zvinotungamirira pakuvharwa kwezvigadzirwa zvekugadzira. Semuenzaniso, 5w40 yekirasi yemvura ine zita rekuti 0,867 kg / l mushure memakore maviri ine kukosha kwe2 kg / l. Izvo hazvigoneke kubvisa kuderedzwa kwemakemikari maitiro anotungamira kune shanduko mukuwanda kwemafuta einjini.
