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I-Cavitation Ngaphakathi koxinzelelo oluphezulu lweMibhobho yesitofu seFuel eNgaphandle (ICANDELO 2)

Imilomo yesitofu efikeleleka ngokubona (OA) isetyenziswe kwizifundo ezininzi ezidlulileyo zokuqukuqela kwangaphakathi kweejiyometri zomlomo wesitofu ezifunyenwe kwii-injini zokuxinzelela ngokuthe ngqo. Uninzi lwezi zifundo zophononongo zangaphambili zenziwa kuxinzelelo lwenaliti olusezantsi kakhulu kunolo lwezitofu ezinxulumene nemizi-mveliso, ngenxa yomngeni wokuyila isitofu se-OA esinokumelana noxinzelelo oluphezulu lwenaliti. Ukubuyekeza, abanye basebenzise iijiyometri ezilinganisiweyo ukutshatisa inombolo kaReynolds.

Izifundo ezazama ukufikelela kuxinzelelo lwenaliti yokwenyani ziya kushwankathelwa apha, kuba ezi zezona zifanelekileyo kuyilo oluthiwe thaca kweli phepha, kwaye ekugqibeleni zezona zichanekile xa kuziwa ekuveliseni kwakhona ukuhamba komdla.

Arcoumanis et al. iphonononge isiphumo sokulinganisa iijometri ngelixa ithelekisa iiReynolds kunye neenombolo zeCavitation kubungakanani bokwenyani kunye nejometri eyonyuswayo[2]. Baye bafumanisa ukuba izakhiwo ze-cavitation zahlukile kwiijometri ezimbini kwiinombolo ze-cavitation ezifanayo. Zombini izikali zejometri zibonise i-cavitation yejometri kwicala elisezantsi le-orifice edge ephezulu (kunye ne-injector ekhomba ezantsi), kunye ne-string cavitation ekhoyo kwicala elichasene nomngxuma we-orifice.

Umahluko ophambili oqatshelwe ngababhali wabalelwa kumahluko wexesha lokuhlala kwiqamza ekuhambeni ngenxa yobude obahlukeneyo bobude be-orifice. Isitofu esikhulu senziwe ngeglasi ye-acrylic, ngelixa i-injector yesikali yokwenene yenziwe ngentonga ye-quartz edityaniswe kumzimba we-Bosch common-rail injector kwaye ijikelezwe yigalari yenkxaso ye-acrylic. Iqhekeza le-acrylic lalilikhulu kakhulu kunomlomo wentsimbi wokuqala we-injector. Reid et al. isebenzise isafire ukwenza uguqulelo olulula lwejiyometri efumaneka kwi-valve-covered-orifice (VCO) ii-injection[3]. Bafumene uxinzelelo lwenaliti ye-2000 bar kunye noyilo. Kubonakala ngathi i-orifice yakhiwa ngokubeka iipleyiti zesafire kwicala le-axial kunye noluhlu lwemingxuma ye-thru eyenza ijometri yokugqibela. Le yayiyindlela ekrelekrele yokwenza lula ukusetyenzwa kwamalungu.