Selelekela Mabapi le Pistons

Liinjini li tšoana le 'pelo' ea likoloi 'me piston e ka utloisisoa e le' setsi sa mantlha 'sa enjene. Bokantle ba piston bo entsoe ka mokoti o ratang katiba, masoba a chitja lipheletsong ka bobeli a hokahane le phini ea piston, pini ea piston e hokahane le pheletso e nyane ea molamu o hokahanyang, le pheletso e kholo ea molamu o hokelang. e hokahane le crankshaft, e fetolang motsamao o khutlisetsang oa piston ho motsamao o chitja oa crankshaft.

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Boemo ba ho sebetsa

Boemo ba piston bo sebetsang bo bobe haholo. Li-piston li sebetsa tlasa mocheso o phahameng, khatello e phahameng, lebelo le phahameng le maemo a setlolo a setlolo. Piston e kopana ka kotloloho le khase e nang le mocheso o phahameng, 'me mocheso o kenang hanghang o ka fihla ho feta 2500K. Ka hona, piston e futhumetse haholo mme boemo ba ho chesa mocheso bo bobe haholo. Ka lebaka leo, li-piston li sebetsa ka mocheso o phahameng haholo, 'me holimo ho fihla ho 600 ~ 700K, mme kabo ea mocheso ha e tšoane. 

Karolo e phahameng ea piston e na le khatello e matla ea khase, haholo nakong ea ts'ebetso, e ka bang 3 ~ 5MPa bakeng sa lienjine tsa peterole le 6 ~ 9MPa bakeng sa lienjineri tsa dizeli. Sena se etsa hore li-piston li hlahise tšusumetso le ho beha khatello ea lehlakore. Piston e ea koana le koana ka silindara ka lebelo le phahameng (8 ~ 12m / s), 'me lebelo le lula le fetoha. Sena se baka matla a maholo a inertia, a etsang hore piston e be tlasa mojaro o mongata oa tlatsetso. Ho sebetsa tlasa maemo ana a thata ho etsa hore li-piston li holofale le ho tsofala ha li-piston, hape le ho fehla meroalo e meng le khatello ea mocheso le ho chesoa ke lik'hemik'hale ka khase. Mohlala, piston e nang le bophara ba 90 mm e ne e ka jara khatello ea boima ba lithane tse tharo. Bakeng sa ho fokotsa boima ba 'mele le inertia, piston ka kakaretso e entsoe ka aluminium alloy, li-piston tse ling tsa mabelo li thehiloe tse li etsang tse matla le tse tšoarellang.

Ntle le maemo a ho sebetsa a feteletseng, ke e 'ngoe ea tse phathahaneng ka ho fetisisa enjeneng. Karolo ea eona e kaholimo, silindara le moqomo oa silinda e etsa kamore ea mollo. Hape e bapala karolo ea ho hema, ho hatella le ho qeta moea.

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Mehele ea piston

Piston ka 'ngoe e na le makhopo a mararo bakeng sa ho kenya mehele e' meli ea moea 'me lesale la oli le mehele ea moea li kaholimo. Nakong ea kopano, ho buloa ha mehele e 'meli ea moea ho lokela ho thekesela ho sebetsa joalo ka litiiso. Mosebetsi o ka sehloohong oa lesale la oli ke ho hlakola oli e fetelletseng e fafalitsoeng leboteng la silindara le ho e etsa hore e lekane. Hajoale, lisebelisoa tse sebelisoang haholo tsa masale a piston li kenyelletsa tšepe ea boleng bo holimo ea boleng bo phahameng, tšepe ea ductile, tšepe ea alloy le tse ling.

Ntle le moo, ka lebaka la libaka tse fapaneng tsa mehele ea piston, kalafo ea bokaholimo le eona ea fapana. Karolo e kantle ea lesale la pele la piston hangata e kalafo ea ho fafatsa ka chrome kapa molybdenum, haholoholo ho ntlafatsa setlolo le ho itšireletsa. Mehele e meng ea lipistone hangata e koahetsoe ka thini kapa e entsoe ka phosphated ho ntlafatsa ho hanela liaparo.

 


Nako ea poso: Jul-16-2020