Injini ye-valve ephansi - ibonakala ngani?
Okuqukethwe
Kusukela esihlokweni uzothola ukuthi yiziphi izimoto ezifakwe injini ye-valve ephansi. Uzofunda futhi mayelana namandla nokwakheka kwayo.
Injini ye-valve ephansi - izici ezimfushane
Injini ye-valve ephansi iwumklamo olula, owaziwa nangokuthi injini ye-valve eseceleni. Lena injini ye-piston lapho i-camshaft ivame ukutholakala khona ku-crankcase, nama-valve ku-cylinder block. Lokhu kuholela eqinisweni lokuthi lolu hlobo lwenjini ludinga isistimu ye-valve yesikhathi ehlukile kuneyunithi ye-valve ephezulu.
Ububi budlula izinzuzo
Ngeshwa, injini ye-valve ephansi inezinkinga eziningi kunezinzuzo. Lona umklamo wakudala osetshenziswa kuphela ezinjini zokugunda. Kuyunithi enjalo, isilinganiso sokucindezela ngokuvamile singaphansi kuka-8, okusho ukuthi lolu hlobo lwebhande lesikhathi lungasetshenziswa kuphela kuyunithi yokushisa inhlansi.
Okubi kakhulu kwenjini ye-under-valve, ngaphezu kwakho konke, umzamo wenjini ephansi. Lokhu kusho ukuthi, isibonelo, ilitha elilodwa lokususwa likhiqiza amandla amancane kunasezinjini zama-valve angaphezulu. Ngeshwa, amandla enjini aphansi awahambisani nokusetshenziswa kwephethiloli okuphansi, futhi ngesikhathi esifanayo injini ayiguquki, ukusabela okubambezelekile ekungezeni kwegesi kuzwakala ngokucacile.
Injini ene-valve ephansi yayinokwehluleka njalo kwe-cylinder, eyayikhubazekile ngenxa yokuxhumana njalo ne-hot exhaust tract. Idizayini ye-motor ayizange ivumele ukusetshenziswa kwama-cylinder liners adumile. Okubi kakhulu futhi kwaba ukuzuza kwezilinganiso eziphansi zokucindezela. Lokhu kwakungenxa yomklamo othize wekhanda.
Izinzuzo zenjini ye-valve ephezulu
Injini ye-under-valve iwumklamo olula kuzo zonke izithuthuthu ezine-stroke futhi lokhu kuyinzuzo enkulu yalezi zinqola ezinamandla. Ngenxa yokuklama kwayo, yayifakwe kalula ezithuthuthu, kodwa yayivame ukudideka neyunithi encane ye-capacitive. Konke sibonga amakhanda amancane anikeza ukubukeka kwe-filigree kuyo yonke iphrojekthi.
Isigaba sesithathu - isikhathi se-hybrid
Cishe ujwayele ukuhlukanisa izinjini ezivuthayo zibe ivalvu ephansi kanye nephezulu. Kukhona imiklamo eyaziwa kancane ehlanganisa izixazululo zazo zombili izinjini. Zibizwa ngokuthi izinjini ezixubile futhi zikhonjwa ngophawu IOE. Endabeni yala mayunithi, ama-valve okungenisa atholakala emakhanda, futhi ama-valve okukhipha i-exhaust ku-block yenjini. Lesi sixazululo sasiyindlela yokuqeda inkinga yokushisa ehambisana nokuguqulwa kwama-cylinder liners.
Injini ye-valve ephansi - kufanelekile ukukhetha
Uma ubhekene nenkinga yokuthenga imoto esebenza ngamavalvu, lokho kungafakazela ukuthi uyazifela ngezimoto zasemnyuziyamu. Udinga ukwazi izindleko zokubuyisela imoto eyayineminyaka engaphezu kuka-50 ubudala.
