Made in China Fuel Injector 0445115062 Diesel Fuel Injector 0 445 115 062 for Bosch

Inqubo yenjini ye-diesel eguqula amandla okushisa abe amandla emishini ifinyelelwa ngezinqubo ezine eziqhubekayo: ukuthatha, ukucindezelwa, umsebenzi kanye ne-exhaust. Inqubo ngayinye enjalo ibizwa ngokuthi umjikelezo wokusebenza. Noma iyiphi injini eqeda umjikelezo wokusebenza ngokuzungeza i-crankshaft kabili bese ibuyisela ipiston izikhathi ezine ibizwa ngokuthi injini ene-four-stroke. Umgomo wokusebenza wenjini yedizili enemivimbo emine:

1. Ukushaywa unhlangothi

I-crankshaft ishayela ipiston ukusuka endaweni efile ephezulu iye endaweni ephansi efile. Ngalesi sikhathi, i-valve yokungena ivuliwe futhi i-valve yokukhipha ivaliwe. Ngesikhathi sokunyakaza kwe-piston, umthamo we-cylinder ukhula kancane kancane, wenze i-vacuum, ngakho-ke ingxube evuthayo idonswa ku-cylinder ngokusebenzisa i-valve yokungena kuze kube yilapho i-piston ifika esikhungweni esiphansi esifile futhi i-valve yokungena ivaliwe.

Ngenxa yokumelana nokuthatha kwesistimu yokuthatha, ingcindezi yegesi kusilinda ekugcineni kokuthatha iphansi kunomfutho womkhathi, cishe u-0.075MPa~0.09MPa. Ngenxa yokushisisa kwezingxenye ezisezingeni eliphezulu ezifana nodonga lwesilinda nepiston kanye negesi yokukhipha esele enamazinga okushisa aphezulu ashiywe emjikelezweni odlule, izinga lokushisa legesi likhuphukela ku-370K~440K. Okungena ku-cylinder ngesikhathi sokushaywa komzimba akuyona ingxube evuthayo, kodwa umoya ohlanzekile.

2. Ukucindezelwa unhlangothi

Ekupheleni kwe-stroke yokudonsa, i-piston isuka endaweni efile ephansi iye endaweni ephezulu efile eqhutshwa yi-crankshaft, futhi ivolumu ye-cylinder iyancipha kancane kancane. Ngalesi sikhathi, ama-valve okungenisa kanye nokukhipha avaliwe, futhi umoya ohlanzekile ucindezelwe. Ukucindezelwa kugcina lapho i-piston ifika endaweni ephezulu efile. Phakathi nenqubo yokucindezela, ukucindezela kwegesi nokushisa kwanda ngesikhathi esifanayo, futhi ingxube iphinde ixutshwe ngokulinganayo. Njengoba isilinganiso sokucindezela sikadizili sikhulu, cishe ku-15 kuya ku-22, izinga lokushisa nokucindezela ekupheleni kokucindezela kuphakeme kakhulu, ingcindezi ingafinyelela ku-3MPa kuya ku-5MPa, futhi izinga lokushisa lingafinyelela ku-800K kuya ku-1000K.

3. Ukushaywa kwamandla

Ekupheleni kokucindezela, iphampu yomjovo kaphethiloli ifafaza udizili onomfutho ophezulu emoyeni oshisa kakhulu kanye nomoya onomfutho ophezulu kusilinda ngomjovo osesimweni senkungu, oshunqamuka ngokushesha bese wenza ingxubevange umoya. Njengoba izinga lokushisa kusilinda lingaphezu kwezinga lokushisa likadizili (cishe u-500K), ingxube kadizili ivutha ngokushesha futhi izishise ngokwayo, futhi isikhathi esithile ngemva kwalokho, ukucindezela nezinga lokushisa kusilinda kukhuphuka kakhulu ngenkathi ijova. amafutha, ephushela ipiston phansi ukuze yenze umsebenzi. Ngesikhathi sokushaywa kwamandla, ingcindezi esheshayo ingafinyelela ku-5MPa~10MPa, futhi izinga lokushisa elisheshayo lingafinyelela ku-1800K ~ 2200K.

4. I-Exhaust stroke

Lapho i-stroke yamandla isiseduze nokuphela, i-valve yokukhipha umoya iyavuleka, i-valve yokukhipha iyavaleka, bese i-crankshaft iphusha i-piston isuka endaweni efile engezansi iye endaweni efile ephezulu ngokusebenzisa induku yokuxhuma. I-exhaust gas ikhishwa kusilinda ngaphansi kwengcindezi yayo eyinsalela kanye nokuphusha kwepiston. Lapho i-piston ifinyelela endaweni ephezulu efile, i-valve yokukhipha iyavala futhi i-exhaust iphetha. Ngenxa yokuthi kukhona ukumelana nokukhishwa kwe-exhaust ohlelweni lwe-exhaust, ekupheleni kwe-exhaust stroke, ingcindezi ku-cylinder iphakeme kancane kunokucindezela komkhathi, mayelana ne-0.105MPa ~ 0.115MPa, futhi izinga lokushisa lingaba ngu-900K ~ 1200K.

Phakathi kwemivimbo emine, i-stroke yamandla kuphela ekhiqiza amandla, kanti eminye imivimbo emithathu imivimbo eyisizayo yokulungiselela ukushaywa kwamandla, futhi konke kudla amandla athile. Emjikelezweni wokuqala lapho injini iqala, kufanele kube namandla angaphandle okuzungeza i-crankshaft ukuze kuqedelwe imivimbo yokungenisa nokucindezelwa. Lapho i-stroke yamandla iqala, amandla asebenzayo agcinwa ku-flywheel ngokusebenzisa i-crankshaft ukuze kugcinwe ukuqhubeka kwemijikelezo elandelayo.