Umgangatho ophezulu weDizili Isitofu seFuel Nozzle Dlla334n419

UPhando ngempembelelo yeNzuzo yeValve yeNaliti ye-Diesel Injector kwiimpawu zokutofa kumngxuma ngamnye. (Icandelo1)

Njengoko izinto ezikhutshwayo kunye nemithetho yokusetyenziswa kwepetroli iya isiba ngqongqo, iinjini zokutsha zangaphakathi ziqhubela phambili zisiya kwicala elicocekileyo, elisebenzayo, kunye nelonga umbane.Imithetho engqongqo yokukhupha ibeka phambili iimfuno eziphezulu zenkqubo yokubonelela ngamafutha, kwaye uxinzelelo lwenaliti yamafutha lunokufikelela malunga ne-250MPa okanye nangaphezulu.I-high-pressure common rail ibe yinto ephambili kwintsimi yeenjini ze-diesel ngenxa yeenzuzo zayo ezizodwa zobugcisa, kunye ne-injector ye-fuel, njengoko i-terminal actuator edibanisa umlambo ophezulu we-high-pressure yendlela kaloliwe eqhelekileyo kunye ne-injection ye-fuel ezantsi, iyabonakala.Isibini sevalve yenaliti ayithwali kuphela indima yokuthambisa amafutha, ukutywinwa kunye nokujikeleza, kodwa ikwasebenza njengenxalenye yokuphunyezwa ngokuthe ngqo kwenaliti yamafutha, emisela iimpawu zenaliti yamafutha kunye nokutshiza, kwaye emva koko ichaphazela umgangatho wokuxuba i-fuel-gas kunye iimpawu zokukhutshwa.

Indibano yevalve yenaliti yenziwe ngevalve yenaliti kunye nomzimba wevalvu yenaliti.Ngokunyuka okuqhubekayo koxinzelelo oluphezulu loxinzelelo oluqhelekileyo lwesitofu sikaloliwe, ukuhamba kwepetroli yoxinzelelo oluphezulu kumlomo (owenziwe ngendibano yevalve yenaliti, igumbi loxinzelelo, njl.njl.) ayinayo kuphela inombolo ephezulu yeReynolds Ukuphazamiseka kwangoko kwejethi. ihamba kunye ne-cavitation ebangelwa yi-pulse contraction kunye ne-fluid vortex motion, eyenza i-gas-liquid eyinkimbinkimbi yesigaba sesibini sokuhamba, nto leyo echaphazela umgangatho we-atomization ye-fuel kwi-outlet ye-nozzle hole.Ngokusekelwe kule nto, ukusuka kumbono wentshukumo yesigxina se-valve yenaliti, eli phepha lihlalutya impembelelo yokunyakaza okuqhelekileyo (ngaphandle kokuqwalasela i-eccentricity) kunye nokunyakaza okungaqhelekanga (ukuqwalasela i-eccentricity) yevalve yenaliti kwindlela yokuhamba kwangaphakathi kunye neempawu zenaliti nganye. umngxuma, kwaye iphuhlisa indlela eqwalasela ukunyanzeliswa kweoyile yamafutha.Ngokusekwe kwimodeli yerhasi yolwelo olunezigaba ezibini ze-transonic kwi-nozzle, izinto eziphembelela i-elastic deformation kunye ne-eccentric motion yevalve yenaliti ziyaphononongwa, ezibonelela ngesiseko sethiyori sokuphucula uyilo kunye nokuveliswa kwe-injector.