Joang ho laola?
Mokhoa oa ho tsamaisa khase o ikarabella bakeng sa ho phalla ha motsoako oa moea-fuel ka har'a li-cylinders le ho tlosoa ha lihlahisoa tse tukang ho tsona.
Boemo ba ho sebetsa ha enjene ke ho etsa bonnete ba ho phalla ha motsoako oa mafura-moea ka har'a li-cylinders le ho tlosoa ha lihlahisoa tse tukang ho tsona. Mesebetsi ena ea bohlokoa e etsoa ke mokhoa oa ho aba.
Bakeng sa cylinder e 'ngoe le e' ngoe ea enjene ho na le likarolo tse nang le bonyane li-valve tse peli (ho kena le ho qeta), hangata tse tharo, tse 'nè kapa tse hlano, le li-actuator tsa tsona. Li lumella li-valve hore li bulehe ha piston e le sebakeng se nepahetseng ka har'a silinda. Tsela eo enjene e entsoeng ka eona le lebelo la eona ke eona e khethollang mofuta oa mochine o sebelisoang. E 'ngoe ea litekanyetso ke 
tlhokahalo ea ho fokotsa tšusumetso ea inertia ea likarolo tse tsamaeang ka ho nepahala ha ho buloa ha valve.
Mefuta ea Sisteme ea Nako
Mofuta oa pele oa mochine e ne e le mokhoa oa ho fana ka khase o tlaase. E ile ea nkeloa sebaka ke tharollo ea sejoale-joale - mochini oa nako ea li-valve tse holimo, moo li-valve tsohle li leng hloohong ea silinda. Tsena ke li-valve tse leketlileng tse shebileng fatše. Molemo oa tharollo ena ke tokoloho ea ho amohela li-valve tse nang le li-diameter tse lekaneng. Bothata ke palo e kholo ea likarolo le tlhokahalo ea ho netefatsa ho tiea ho lekaneng ha likarolo tse bohareng tsa phetisetso ea matla. Mofuta ona oa mochine oa nako o sebelisoa hangata lienjineng tsa likoloi tsa baeti.
Ke li-valve tse kae
Hona joale, silinda e 'ngoe e na le li-valve tse peli, tse tharo, tse 'nè kapa tse hlano. Sistimi ea li-valve tse ngata e fana ka tekanyo e phahameng ea ho tlatsa silinda ka motsoako, 
e eketsa pholiso ea li-valve plug, e fokotsa phapang ea ho bula li-valve le ho lieha ho koala ha valve. Ka hona, e molemo haholo bakeng sa enjene, hape e tšoarella ho feta e nang le li-valve tse peli.
OHV kapa OHS?
Ka valve e ka holimo, li-valve stems li ka khannoa ke shaft e le 'ngoe e ka har'a ntlo ea enjene - ena ke tsamaiso ea OHV kapa hloohong - tsamaiso ea OHC. Haeba li-valve li khannoa ke li-shaft tse peli tse fapaneng tse teng hloohong, sena se bitsoa tsamaiso ea DOHC. Ho ipapisitsoe le moralo, li-valve li ts'oaroa ka kotloloho ho tsoa ho likamera tsa shaft kapa ka li-levers tsa khatello ea khatello lipakeng tsa cam le botlaaseng ba kutu ea valve. The intermediate element ke pusher. Hajoale, ho sebelisoa lipompo tse sa hlokeng tlhokomelo tse nang le matšeliso a hydraulic valve clearance. Kajeno, OHC kapa DOHC li sebelisoa hangata lienjineng tsa Europe le Japane. Sistimi ea OHV e se e sebelisoa lienjineng tse 'maloa, joalo ka American HEMI.
Li-torque tse lokiselitsoeng ho tloha crankshaft ho ea camshaft li fetisoa ka likere, liketane kapa li-drive tsa mabanta ho sebelisoa lebanta le meno. Tharollo ea ho qetela ha e hloke lubrication, ha e sebetse ebile ha e imelle li-bearings. Hangata e sebelisoa likoloing tsa sejoale-joale.
