Tsis tas. Qhov tseeb, qee qhov siab-compression siv tau siv cov roj ocines qis thiab muaj qee yam qis-octincess Vim li cas thiaj hais li ntawd? Cia peb saib thawj zaug vim li cas qee qhov qis-compression engines xav tau high-octane roj thiab high-tshav kub-tus nqi tawg.
Ib qho piv txwv ua ntej yog turbocharged. Piv nrog rau lub cav tshuab hluav taws xob zoo, turbocharged muaj ntau dua lub tog raj kheej siab siab. Txhawm rau kom tiv thaiv knocking nyob rau hauv kev kub siab, lawv yuav tsum muaj cov roj oc octane nrog cov tshuaj tiv thaiv zoo dua qub. Ib qho ntxiv, lawv xav tau high-kub-tus nqi (txias dua) lub txim plugs kom nrawm nrawm thiab tswj kev ua yeeb yam zoo.
Ntawm qhov tod tes, vim li cas qee qhov high-compression engines pom zoo kom siv qis-oxes-octane roj thiab qis-kub-tus nqi siv hluav taws xob plugs?
Qhov no coj peb mus rau ib lub tswv yim tseem ceeb: cav ncig ua si. Feem ntau cov neeg caij tsheb niaj hnub no feem ntau siv plaub-stroke otto cav. Txawm li cas los xij, tseem muaj kev hloov pauv raws li cov orto ncig, xws li Atkinson-lub voj voog thiab miller-voj voog sib piv los ntawm kev nthuav dav ntau dua qhov piv rau Compression. Nyob rau hauv cov cav no, qhov tseeb compression yog qis dua theoretical compression piv, coj mus rau qis zog thiab kub thaum lub compression hlab ntsha. Raws li qhov tshwm sim, High-compression engins tau ua haujlwm cov dej no ua tau zoo nrog cov roj qis-oxesxes thiab qis-kub-tus nqi tawg.
Lwm qhov tseem ceeb tshaj plaws cuam tshuam rau roj Octane yuav tsum tau ua haujlwm cav. Cov cav sib txawv muaj ntau lub txias txias chaw-feem ntau cov tsheb nyob ib ncig ntawm 90 degree, thaum BMW tshuab tuaj yeem ncav cuag 100-110 degree. Qhov kub siab dua qhia ntau dua kev ua haujlwm hnyav dua tab sis kuj tseem muaj kev pheej hmoo ntawm knocking. Tsawg qhov kub kub txo qis efficiency tab sis ua rau lub cav ntau zam ntawm roj octane qis dua.
Dhau li ntawm Compression sib, ob peb lwm yam cuam tshuam lub cav roj Oc Oc Octane, nrog rau:
1.Qhov lub zog ntawm Radiator Ntxuam
2.Qhov khoom siv ntawm lub cav thaiv (piv txwv li, txhuas alloy lossis cam khwb cia hlau)
3.Qhov kev ua tau zoo ntawm cov intercooler hauv cov dej turbocharged
Lub tshuab tsim thiab siv yog cov kev kawm nyuaj. Xaiv cov khoom siv hluav taws xob zoo thiab ua kom muaj nqi raws li kev xav tau tiag tiag yog qhov ua tau zoo ob qho tib si kev ua tau zoo thiab roj ua tau zoo.
