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Umgaqo wokusebenza we-injini ye-diesel ikakhulu ubandakanya iinkqubo ezine ezisisiseko zokusebenza: ukungena, ukuxinzelela, amandla kunye nokukhupha. Oku kulandelayo yinkcazo eneenkcukacha yokusebenza kwezi nkqubo zine:

1. Umsebenzi wokungenisa:

Xa i-stroke yokuthatha iqala, ipiston ikwiziko eliphezulu lokufa.
I-crankshaft iqala ukujikeleza, kwaye ipiston ishukuma ukusuka kwindawo ephezulu efileyo ukuya kwindawo ephantsi efileyo ngokusebenzisa intonga yokudibanisa.
Umthamo kwi-cylinder ukhula ngokuthe ngcembe, okwenza ukuba uxinzelelo lomoya kwi-cylinder lube ngaphantsi koxinzelelo kwipayipi yokungena.
Ivalve yokungena ivula, ivumela umoya omtsha ukuba ungene kwi-cylinder de i-piston ihambe iye kwindawo esezantsi efileyo, kwaye isilinda sizaliswe ngumoya omtsha.
Ivalve yokungena ivale emva koko kwaye isilinda singene kwindawo evaliweyo.

2. Ukusebenza koxinzelelo:

Ipiston iqala ukusuka kwindawo esezantsi efileyo ukuya kwiziko eliphezulu elifileyo.
Zombini iivalvu zokungena kunye ne-exhaust zihlala zivaliwe.
Njengoko ipiston ihambela phezulu, umthamo we-cylinder uyancipha ngokuthe ngcembe kwaye igesi iyaxinzelelwa.
Uxinzelelo lomoya kunye neqondo lokushisa kwi-cylinder likhuphuka ngokukhawuleza, lilungiselela isigaba esilandelayo sokutsha.

3. Ukusebenza kwamandla:

Xa ipiston isondela kwiziko eliphezulu lokufa, i-injector iqala ukutshiza idizili kwigumbi lokutsha ngoxinzelelo oluphezulu.
I-diesel fuel ixuba ngokukhawuleza kunye nobushushu obuphezulu kunye nomoya woxinzelelo oluphezulu ukwenza umxube ovuthayo.
I-diesel fuel iyatshisa ngokukhawuleza emva kokufikelela kwindawo yokuzimela, ivelise i-high-temperature kunye ne-high-pressure gases.
Ezi gesi zityhala ipiston ijonge ezantsi, iqhube i-crankshaft ukuba ijikelezise kwintonga yokudibanisa, ngaloo ndlela ikhupha amandla.
Ubushushu kunye noxinzelelo lwerhasi oluveliswa yinkqubo yokutsha lutyhala ipiston ukuba isebenze de ipiston isondele kwiziko elisezantsi elifileyo kwakhona.

4. Ukusebenza kombhobho:

Ipiston ishukuma ukusuka kumbindi ofileyo ukuya kwindawo ephezulu efileyo.
Ivalve yokukhupha ivula ukuvumela igesi yokukhupha emva kokutsha ukuba ikhutshwe kwi-cylinder.
Igesi yokukhupha ijoliswe kwindawo yangaphandle ngokusebenzisa inkqubo yokukhupha.
Xa i-piston ifikelela kwiziko eliphezulu lokufa kwakhona, i-valve yokukhupha ivala, iphawula ukuphela komjikelezo wonke wokusebenza kunye nokulungiselela isigaba sokuthatha umjikelezo olandelayo.