Matsakaicin rabo da adadin octane na fetur
Abubuwa
Matsakaicin rabo - juriya na kunna kai
Matsayin jiki na jimlar ƙarar silinda a lokacin piston yana cikin tsakiyar matattu zuwa girman aiki na ɗakin konewa na ciki yana da alaƙar matsawa (CL). Ana siffanta mai nuna alama da ƙarancin girma. Don tuƙin mai shine 8-12, na dizal ɗin 14-18. Ƙara ma'aunin yana ƙara ƙarfin wuta, ingancin injin, kuma yana rage yawan mai. Koyaya, ƙimar CV masu girma suna ƙara haɗarin kunna kai na cakuda mai ƙonewa a babban matsin lamba. Saboda wannan dalili, man fetur mai babban alamar sanyaya dole ne kuma ya sami juriya mai girma - lambar octane (OC).
Octane rating - bugun juriya
Konewar man fetur da wuri yana tare da ƙwanƙwasa siffa da ta haifar da tashin bam a cikin silinda. Irin wannan sakamako yana faruwa saboda ƙarancin juriya na man fetur na ruwa don kunna kai a lokacin matsawa. Ƙwaƙwalwar juriya yana da alamar lambar octane, kuma an zaɓi cakuda n-heptane da isooctane a matsayin tunani. Matsayin kasuwancin man fetur yana da darajar octane a cikin yanki na 70-98, wanda yayi daidai da adadin isooctane a cikin cakuda. Don ƙara wannan siga, an gabatar da ƙarin abubuwan gyara octane na musamman a cikin cakuda - esters, alcohols, da ƙananan ƙarfe ethylates. Akwai dangantaka tsakanin rabon matsawa da alamar man fetur:
- A cikin yanayin CV ƙasa da 10, ana amfani da AI-92.
- Ana buƙatar AI-10 don SJ 12-95.
- Idan CV shine 12-14 - AI-98.
- Tare da CV daidai da 14, kuna buƙatar AI-98.
Don daidaitaccen injin carbureted, SOL yana kusan 11,1. A wannan yanayin, OC mafi kyau shine 95. Duk da haka, ana amfani da methanol a wasu nau'ikan motoci. SD a cikin wannan misalin ya kai 15, kuma OC ya bambanta daga 109 zuwa 140.
Amfani da ƙananan petur octane
Littafin littafin mota yana nuna nau'in injin da man da aka ba da shawarar. Yin amfani da cakuda mai ƙonewa tare da ƙananan OC yana haifar da ƙonewa na man fetur da wuri kuma wani lokacin lalata abubuwan tsarin motar.
Hakanan yana da mahimmanci a fahimci wane tsarin samar da man fetur ake amfani da shi. Don nau'in injin (carburetor), bin ka'idodin OC da SJ ya zama tilas. A cikin yanayin tsarin atomatik ko allura, ana daidaita cakuda man iska ta hanyar lantarki. Cakudar man fetur ɗin ya cika ko ya ƙare zuwa ƙimar OCH da ake buƙata, kuma injin ɗin yana aiki akai-akai.
High octane man fetur
AI-92 da AI-95 sune samfuran da aka fi amfani dasu. Idan kun cika tanki, alal misali, tare da 95th maimakon 92 da aka ba da shawarar, ba za a sami mummunar lalacewa ba. Ƙarfin kawai zai karu a cikin 2-3%. Idan ka cika motar da 92 maimakon 95 ko 98, to, yawan man fetur zai karu, kuma wutar lantarki za ta ragu. Motoci na zamani tare da allurar lantarki suna sarrafa samar da cakuda mai ƙonewa da iskar oxygen kuma ta haka ne ke kare injin daga tasirin da ba a so.
Teburin matsawa rabo da lambar octane
Ƙwaƙwalwar ƙwanƙwasa man fetur na mota yana da dangantaka ta kai tsaye tare da rabon matsawa, wanda aka gabatar a cikin tebur da ke ƙasa.
| ZUWA | SJ |
| 72 | 6,8-7,0 |
| 76 | 7,2-7,5 |
| 80 | 8,0-9,0 |
| 91 | 9,0 |
| 92 | 9,1-9,2 |
| 93 | 9,3 |
| 95 | 10,5-12 |
| 98 | 12-14 |
| 100 | Fiye da 14 |
ƙarshe
Motocin gas suna halin manyan halaye guda biyu - juriya ƙwanƙwasa da matsi rabo. Mafi girman SO, ana buƙatar ƙarin OC. Yin amfani da man fetur tare da ƙananan ko mafi girma darajar juriya a cikin motoci na zamani ba zai cutar da injin ba, amma zai shafi wutar lantarki da man fetur.
