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

Inkqubo ye-injini ye-diesel yokuguqula amandla obushushu kumandla omatshini ifezekiswa ngeenkqubo ezine eziqhubekayo: ukungenisa, ukunyanzeliswa, umsebenzi kunye nokukhupha. Inkqubo nganye enjalo ibizwa ngokuba ngumjikelo wokusebenza. Nayiphi na i-injini egqibezela umjikelo wokusebenza ngokujikelezisa i-crankshaft kabini ize iphinde ibuyisele ipiston kane ibizwa ngokuba yi-four-stroke engine. Umgaqo wokusebenza we-injini yedizili enemivimbo emine:

1. Ukuthatha istroke

I-crankshaft iqhuba ipiston ukusuka kwindawo ephezulu yokufa ukuya kwiziko elisezantsi. Ngeli xesha, i-valve yokungena ivulekile kwaye i-valve yokukhupha ivaliwe. Ngexesha lokuhamba kwepiston, umthamo we-cylinder uyanda ngokuthe ngcembe, wenze i-vacuum, ngoko ke umxube ovuthayo ufunxelwa kwi-cylinder ngokusebenzisa i-valve yokungena de i-piston ifike kwiziko elisezantsi elifileyo kwaye i-valve yokungena ivaliwe.

Ngenxa yokuchasana kokungena kwenkqubo yokuthatha, uxinzelelo lwegesi kwi-cylinder ekupheleni kokuthatha luphantsi kunoxinzelelo lwe-atmospheric, malunga ne-0.075MPa ~ 0.09MPa. Ngenxa yokufudumeza kweendawo eziphezulu zokushisa ezifana nodonga lwe-cylinder kunye nepiston kunye ne-high-temperature ye-residual exhaust gas eshiywe kumjikelezo wangaphambili, ubushushu begesi buphakama ukuya kwi-370K ~ 440K. Yintoni engena kwi-cylinder ngexesha lokubetha kwe-intake ayilona umxube ovuthayo, kodwa umoya ococekileyo.

2. Uxinzelelo lwestroke

Ekupheleni kwe-stroke yokuthatha, ipiston ishukuma ukusuka kwindawo esezantsi efileyo ukuya kwiziko eliphezulu elifileyo eliqhutywa yi-crankshaft, kwaye umthamo we-cylinder uyancipha ngokuthe ngcembe. Ngeli xesha, i-valve yokungena kunye nokukhupha ivaliwe, kwaye umoya ococekileyo ucinezelekile. Uxinzelelo luphela xa ipiston ifikelela kwiziko eliphezulu lokufa. Ngethuba lenkqubo yokunyanzeliswa, uxinzelelo lwegesi kunye nokushisa kwanda ngexesha elifanayo, kwaye umxube uxutywe ngokulinganayo. Ekubeni umlinganiselo wokunyanzeliswa kwedizili mkhulu, malunga ne-15 ukuya kwi-22, ubushushu kunye noxinzelelo ekupheleni koxinzelelo luphezulu kakhulu, uxinzelelo lunokufikelela kwi-3MPa ukuya kwi-5MPa, kwaye ubushushu bunokufikelela kwi-800K ukuya kwi-1000K.

3. Isibetho samandla

Ekupheleni koxinzelelo loxinzelelo, ipompo yokutofa i-fuel itshiza idizili enoxinzelelo oluphezulu kwiqondo lobushushu obuphezulu kunye nomoya woxinzelelo oluphezulu kwi-cylinder ngokusebenzisa i-injector ngendlela yenkungu, ekhutshwa ngokukhawuleza kwaye yenze umxube kunye umoya. Ekubeni iqondo lobushushu kwi-cylinder liphezulu kunobushushu obutshisayo bedizili (malunga ne-500K), umxube wedizili uvutha ngoko nangoko kwaye uzitshise ngokwawo, kwaye kangangexesha elithile emva koko, uxinzelelo kunye nobushushu kwi-cylinder buphakama kakhulu ngelixa utofa. amafutha, ukutyhala ipiston ezantsi ukwenza umsebenzi. Ngexesha lokubetha kwamandla, uxinzelelo olukhawulezileyo lunokufikelela kwi-5MPa ~ 10MPa, kwaye ubushushu obukhawulezayo bunokufikelela kwi-1800K ~ 2200K.

4. I-Exhaust stroke

Xa i-stroke yamandla isondele ekupheleni, ivalve yokukhupha iyavula, ivalve yokungena ivale, kwaye i-crankshaft ityhala ipiston ukusuka kwindawo efileyo esezantsi ukuya kwiziko eliphezulu elifileyo ngokusebenzisa intonga yokudibanisa. Irhasi yokukhupha ikhutshwa kwi-cylinder phantsi koxinzelelo olushiyekileyo kunye nokutyhala kwepiston. Xa i-piston ifikelela kwiziko eliphezulu lokufa, ivalve yokukhupha ivala kwaye i-exhaust iphela. Ngenxa yokuba kukho ukuchasana nokukhupha kwi-system exhaust system, ekupheleni kwe-stroke yokukhupha, uxinzelelo kwi-cylinder luphezulu kancinci kunoxinzelelo lwe-atmospheric, malunga ne-0.105MPa ~ 0.115MPa, kwaye ubushushu bu malunga ne-900K ~ 1200K.

Phakathi kwemivumbo emine, i-stroke yamandla kuphela eyenza amandla, kwaye ezinye izibetho ezintathu zizibetho ezincedisayo ukulungiselela ukubetha kwamandla, kwaye zonke zidla amandla athile. Kumjikelo wokuqala xa i-injini iqala, kufuneka kubekho amandla angaphandle okujikeleza i-crankshaft ukugqiba ukungena kunye nokunyanzeliswa kwemivimbo. Xa i-stroke yamandla iqala, amandla okusebenza agcinwa kwi-flywheel ngokusebenzisa i-crankshaft ukugcina ukuqhubeka kwemijikelo elandelayo.