Injini ye-OHV - isho ukuthini ngempela?

Kusukela kokuqukethwe yi-athikili, uzofunda ukuthi isikhathi sihlelwa kanjani enjini ye-valve ephezulu. Siyiqhathanise ne-OHC eqhudelanayo futhi sachaza ubuhle nobubi bawo womabili amabhayisikili.

Injini ye-OHV - uyibona kanjani?

Injini ye-valve ephezulu iwumklamo ongajwayelekile obizwa ngokuthi i-overhead valve. Kulezi zinyunithi, i-camshaft itholakala ku-cylinder block, futhi ama-valve atholakala ekhanda le-cylinder. Amabhande esikhathi alolu hlobo amayunithi ezimo eziphuthumayo adinga ukulungiswa njalo kokucaciswa kwama-valve.

Nokho, kukhona ukuhluka kwenjini ye-OHV okuhlaba umxhwele ukwethembeka kwayo. Akulula ukulandelela isifanekiso esilungiswe kahle esinenjini enjalo emakethe. Imodeli enama-hydraulic lifter ithole umklamo ongcono kakhulu wesikhathi. 

Injini ye-OHV - umlando omfushane

I-1937 ibhekwa njengonyaka obaluleke kakhulu emlandweni wezinjini zama-valve eziphezulu. Ukusetshenziswa kwalokhu kushayela kubangele ukwanda kwamandla emodeli Edumile, okuqhubekisele phambili ukuphakamisa izinga lokuncintisana. Naphezu kwenhlekelele ehambisana nesimo sezombangazwe, ukuthengiswa kwemoto edumile kukhule ngamaphesenti angaphezu kuka-40. 

I-Skoda Popular yayingomunye wabambalwa ababengaziqhayisa nge-overhead valve drive. Babenezinjini ezine-cylinder ezinevolumu engu-1.1 amalitha namandla angama-30 hp, anamandla ngalezo zikhathi. Kule nguqulo, izimoto zingatholakala ngezitayela zomzimba: i-sedan, i-convertible, i-roadster, i-ambulensi, iveni yokulethwa kanye ne-Tudor. Imoto yayithandwa kakhulu emhlabeni wonke, kodwa futhi yanqoba imigwaqo yasePoland.

Imoto enenjini ye-valve ephezulu yayiyinani elihle kakhulu lemali. Yayilungele imigwaqo yasePoland ephukile futhi enemigodi. Injini enama-stroke amane ithuthuke i-27 hp kanti isilinganiso sikaphethiloli esisetshenziswa singu-7 l/100 km kuphela.

Injini ye-OHV ilahlekelwa yi-OHC

Injini ye-OHV ithathelwe indawo idizayini ye-OHC encane. Ukusebenza kwezinjini ezintsha kuthule futhi kufana kakhulu. Inzuzo ye-camshaft engaphezulu ukuthi ayijwayele ukwehluleka, idinga ukulungiswa kwe-valve clearance, futhi ishibhile ukuyisebenzisa.

Injini ye-OHV - injini ye-Skoda entsha

Injini ye-OHV ngokungangabazeki ingeyenkathi edlule. Akumangalisi, njengoba sekudlule iminyaka engaphezu kwengu-80 kusukela ekuqaleni kokukhiqizwa kwayo. Nokho, akungabazeki ukuthi i-Skoda ikweleta okuningi kulo mklamo, obeka izitayela zeminyaka eminingi ezayo. Izinhlobo ezifiseleka kakhulu zalezi zimoto zabaqoqi ziyizibonelo ezigcinwe kahle ezifakwe injini ye-OHV. Namuhla, i-Skoda futhi ihamba phambili ekuthuthukiseni nasekusebenziseni izinto ezintsha kanye nezinhlobo zezimoto ezihambisana nemvelo ezifanele abalandela abanduleli bayo.