Isitofu seFuel esiSebenza ngokuPhakamileyo EJBR01801Z Isitofu seDizili esiQhelekileyo seSahlulo seNjini ye-Delphi Auto

Umbhobho wesitofu licandelo elichanekileyo elichanekileyo elidibanisa inaliti yamafutha kunye ne-atomisation, kunye nokusebenza kakuhle kwenkqubo yokutofa kwe-fuel kuchatshazelwa kakhulu ziimpawu zokuhamba ngaphakathi kombhobho. I-fuel kwigumbi loxinzelelo kwi-inlet ye-nozzle, indawo enqamlezileyo ye-contraction ye-flow channel, isantya sokuhamba kwe-fuel sanda, uxinzelelo lwendawo luyancitshiswa lube ngaphantsi kwe-saturation vapor pressure of the fuel, okubangelwa yi-cavitation. I-bubble ye-cavitation eqhubekayo eyenziwa ngokuqhubekayo phantsi kweemeko zoxinzelelo oluphezulu, ukuwa kwe-micro-jet kunye noxinzelelo lwempembelelo eyenziwa yimpembelelo yendawo yangaphakathi yomngxuma wokutshiza, kunye nokuhamba kwexesha, indawo yangaphakathi yomngxuma wokutshiza iya kuvelisa. Ukuqhekeka kunye ne-craters, ukuhamba kwangaphakathi kwe-nozzle kunye ne-atomisation yesitshizi kuya kuchaphazeleka, kwaye kwiimeko ezinzima, umlomo uya kusilela. Ngoko ke, kubaluleke kakhulu ukufunda ukuphuhliswa kwe-cavitation flow ngaphakathi kwe-nozzle kunye ne-cavitation enxibayo kumphezulu wodonga lwangaphakathi lomngxuma wokutshiza.

Iiparamitha zejometri ze-nozzle zinempembelelo enkulu kwi-cavitation flow and cavitation wear.Shervani et al. kunye noLee et al. iqukunjelwe ngokuhlalutya kokulinganisa ukuba ukunyuka kwe-taper ye-nozzle kunokunciphisa ngokufanelekileyo umphumo we-bubble collapse kwi-cavitation ukunxiba kwindawo yangaphakathi yomlomo, kunye nokuba ukuthembeka kwe-nozzle kuya kuphuculwa. ULee et al. ukusuka kwiYunivesithi yaseHanyang yenze uphando lovavanyo kwaye yafumanisa ukuba umlinganiselo omkhulu wobude bombhobho ukuya kububanzi, amandla amaninzi afunekayo ukuvelisa i-cavitation, oko kukuthi, i-cavitation icinezelwe njengoko ubude bombhobho bukhula.Brusiania et al. xa kuthelekiswa ukusebenza kwe-hydrodynamic ye-cylindrical kunye ne-conical nozzles kwaye kwafumanisa ukuba iqondo lokuhamba kwangaphakathi kwi-conical nozzle lincitshiswe kakhulu, kwaye ukufana ngokubanzi kokuhamba kuphuculwe kakhulu. Ngokubhekiselele kwi-cavitation risk prediction, Dular et al. baphetha ngokuhlalutya kwabo ukuba i-cavitation bubbles kufuphi nodonga iya kudilika i-asymmetrically, kwaye ivelise i-micro-jet impact flow flow ukuya eludongeni kwicala elikude ukusuka eludongeni lwangaphakathi lombhobho.Zhang et al. ifumene imodeli entsha yokuqikelela ukunxiba kwe-cavitation esekwe kwithiyori yereyithi yokudluliselwa kobuninzi phakathi kwezigaba ezahlukeneyo ngokufunda ireyithi yokudluliselwa kobuninzi phakathi kwezigaba ezahlukeneyo kwaye yaqinisekisa kwi-nozzle eyenziwe lula, kodwa imodeli ayikwazanga ukuqikelela ngokuchanekileyo umngcipheko we-cavitation, kwaye akunjalo. kunokwenzeka ukuqikelela umngcipheko we-cavitation. Nangona kunjalo, imodeli ayikwazi ukubonelela ngeempawu ezichanekileyo zobungakanani bengozi ye-cavitation. Okwangoku, xa uvavanya umngcipheko we-cavitation ukunxiba kwi-nozzle, eyona nto igxininiswa kuyo kwindawo yomlomo apho i-cavitation inokuthi yenzeke kunye nokuvavanya ubungakanani be-cavitation yokugqoka kwiindawo ezahlukeneyo ngaphakathi kwe-nozzle. Nangona kunjalo, akukho ukubonakaliswa kobungakanani beqondo lokugqoka kwiindawo apho i-cavitation inokwenzeka khona, kwaye kukho ukungabikho kophando kwimpembelelo yeeparitha zejometri ze-nozzle kwingozi yomonakalo we-cavitation.