Nako e feto-fetohang ea valve. Melemo ke efe? Ke khefu efe?
Nako e sa khaotseng ea li-valve holim'a lebelo lohle la lebelo la enjene ke tharollo e theko e tlase empa e sa sebetseng hantle. Phetoho ea mekhahlelo e na le melemo e mengata.
Ha ba ntse ba batla menyetla ea ho ntlafatsa piston, lienjineri tse 'nè tsa motlakase tse tukang ka hare, baqapi ba lula ba hlahisa litharollo tse ncha tsa ho ntlafatsa matla, ho atolosa lebelo le molemo, ho fokotsa tšebeliso ea mafura le ho fokotsa ho tsoa ha mocheso. Ntoeng ea ho ntlafatsa ts'ebetso ea ho chesa mafura, baenjiniere ba kile ba sebelisa nako e fapaneng ea li-valve ho etsa lienjine tse sebetsang hantle le tse baballang tikoloho. Litaolo tsa nako, tse ntlafalitseng haholo ts'ebetso ea ho tlatsa le ho hloekisa sebaka se kaholimo ho lipiston, li ipakile e le lilekane tse ntle haholo tsa baqapi mme tsa bula menyetla e mecha ka ho felletseng bakeng sa bona.
Litharollong tsa khale ntle le ho fetola nako ea li-valve, li-valve tsa enjene ea li-stroke tse 'nè lia buleha le ho koaloa ho latela potoloho e itseng. Potoloho ena e phetoa ka tsela e tšoanang ha feela enjene e ntse e sebetsa. Lebelong lohle la lebelo, ha ho na boemo ba camshaft (s), kapa boemo, sebopeho le palo ea likam ho camshaft, kapa boemo le sebopeho sa matsoho a rocker (haeba a kentsoe) a fetoha. Ka lebaka leo, linako tse loketseng tsa ho bula le maeto a li-valve li hlaha feela holim'a mefuta e moqotetsane ea rpm. Ntle le moo, ha li tsamaellane le litekanyetso tse nepahetseng mme enjene e sebetsa hantle haholo. Ka hona, nako ea li-valve tse behiloeng fekthering ke ho sekisetsa ho hole ha enjene e sebetsa hantle empa e sitoa ho bontša bokhoni ba eona ba 'nete mabapi le matla, ho feto-fetoha ha maemo, tšebeliso ea mafura le mesi ea mosi.
Haeba likarolo li kenngoa tsamaisong ena e tsitsitseng, ea ho sekisetsa e lumellang ho fetola mekhahlelo ea nako, joale boemo bo tla fetoha haholo. Ho fokotsa nako ea li-valve le ho phahamisa li-valve ka lebelo le tlaase le le bohareng, ho lelefatsa nako ea li-valve le ho phahamisa nako ea li-valve ka lebelo le phahameng la lebelo, hammoho le "ho khutsufatsa" ha nako ea valve ka lebelo le haufi le ho feta, ho ka holisa haholo. lebelo leo li-parameter tsa nako ea valve li leng hantle. Ha e le hantle, sena se bolela torque e eketsehileng ho li-revs tse tlase (ho feto-fetoha ha enjene ho feta, ho potlakisa habonolo ntle le ho theoha), hammoho le ho finyella torque e phahameng ka ho fetisisa. Ka hona, nakong e fetileng, ka litlhaloso tsa tekheniki, torque e phahameng e ne e amahanngoa le lebelo le itseng la enjene, 'me hona joale e fumaneha hangata ka lebelo le itseng.
Phetoho ea nako e etsoa ka mekhoa e fapaneng. Tsoelo-pele ea tsamaiso e khethoa ke moralo oa variator, i.e. karolo ea tsamaiso e ikarabellang bakeng sa ho fetola liparamente. Litharollong tse rarahaneng ka ho fetisisa, ke tsamaiso eohle e laoloang ke k'homphieutha, ho ela hloko lintlha tse ngata tse fapaneng. Tsohle li itšetlehile ka hore na u hloka ho fetola nako ea ho bula feela ea li-valve kapa stroke ea bona. Hape ke habohlokoa hore na liphetoho li etsahala ka tšohanyetso kapa butle-butle.
Ka mokhoa o bonolo ka ho fetisisa (VVT), mofetoleli, i.e. ntho e etsang phetoho ea angular ea camshaft e behiloe holim'a pulley ea koloi ea camshaft. Tlas'a tšusumetso ea khatello ea oli le ka lebaka la likamore tse entsoeng ka ho khetheha ka har'a lebili, mochine o ka potoloha hub e nang le camshaft e kentsoeng ho eona e amanang le ntlo ea mabili, e sebelisoang ke mochine oa ho khanna nako (ketane kapa lebanta la meno). Ka lebaka la bonolo ba eona, tsamaiso e joalo e theko e tlaase haholo, empa ha e sebetse. Li ne li sebelisoa ke, har'a tse ling, Fiat, PSA, Ford, Renault le Toyota mefuteng e meng. Sistimi ea Honda (VTEC) e fana ka litholoana tse betere haholo. Ho fihlela ho rpm e itseng, li-valve li buloa ke lik'hamera tse nang le litlaleho tse khothalletsang ho khanna hamonate le moruo. Ha tekanyo e itseng ea lebelo e fetisitsoe, sete ea lik'hamera lia fetoha 'me li-levers li hatella lik'hamera, e leng se tlatsetsang ho khanna lipapali tse matla. Ho fetoha ho etsoa ke tsamaiso ea hydraulic, pontšo e fanoa ke molaoli oa elektronike. Li-hydraulics li boetse li na le boikarabello ba ho netefatsa hore li-valve tse peli feela ka cylinder li sebetsa karolong ea pele, le li-valve tse 'nè karolong ea bobeli. Tabeng ena, ha se feela linako tsa ho bula tsa li-valve tse fetohang, empa hape le stroke ea bona. Tharollo e tšoanang e tsoang ho Honda, empa ka phetoho e boreleli ea nako ea valve e bitsoa i-VTEC. Litharollo tse bululetsoeng ke Honda li ka fumanoa ho Mitsubishi (MIVEC) le Nissan (VVL).
Ho monate ho tseba: litefiso tsa fake. Ho na le scammers inthaneteng! Mohloli: TVN Turbo / x-news
