Diesel Injector Roj Injector 0445120141 Bosch rau Gazon Cav D 245.7 E3 Mmz Serie DD 245.30 E3

Cavitation Sab hauv High-Pressure Optically Transparent Roj Injector Nozzles(PIB 7)

4 Cov lus xaus (mus ntxiv)

Txoj hauv kev no suav tias yog cov txheej txheem tsis ua haujlwm feem ntau rau cov ntaub ntawv nkig, thiab siv Finite Element Analysis los daws cov haujlwm ua haujlwm ntawm lub nozzle kom ntxaws. Tus tsim siv sapphire clamps nrog cov geometries yooj yim rau compress ib qho acrylic nozzle piece nyob rau hauv thiaj li yuav txo tau lub tensile stresses nyob rau hauv lub puab nto ntawm daim uas lub siab los ntawm cov roj tau thov. Rau lub peev xwm muab siab, qhov kev tsim no tsis tshua kim dua ib qho tsim tshwj xeeb los ntawm sapphire thiab ruaj khov dua li ib qho tsim tshwj xeeb los ntawm acrylic.

Lub cavitation nyob rau hauv lub orifices qhia dependence rau geometry, tshwj xeeb tshaj yog nyob rau hauv lub inclination lub kaum sab xis ntawm lub hauv paus axis ntawm lub orifice. Thaum cavitation tau pom nyob rau ntawm ob sab ntawm lub qhov ncauj nrog lub kaum sab xis loj dua, nws tsis yog vim txoj hlua cavitation, uas yog qhov cavitation hauv cheeb tsam no feem ntau raug ntaus nqi rau hauv kev tshawb fawb yav dhau los.

Kev ua haujlwm yav tom ntej yuav tshem tawm qhov tshem tawm ntawm lub sapphire clamps, thiab siv cov sapphire yooj yim dua rau hauv cov hlau tsis muaj steel clamps. Qhov kev hloov pauv no yuav tsum txo qis kev ntxhov siab hauv cov sapphire pieces thiab tso cai rau clamping quab yuam ntau dua li qhov ua tau nrog tus qauv tsim dhau los.

Cov khoom tshiab yuav raug kuaj kom paub meej tias lawv qhov kev ua tau zoo thiab tom qab ntawd cov kev sim yuav raug ua dhau los ntawm ntau qhov rov qab siab (cavitation umbers) hauv lub chamber pressurized. Qhov no yuav tsim ntau yam cavitating ntws rau kev kawm ntxiv.

5 Kev lees paub

Cov kws sau ntawv xav ua tsaug rau EU rau kev txhawb nqa txoj haujlwm no raws li HERCULES-C project, thiab tseem ua tsaug rau Swedish Energy Agency rau lawv txoj kev txhawb nqa.

6 Cov ntaub ntawv

[1] Soteriou, C., Andrews, R., thiab Smith, M., 1999, “Ntxiv Kev Kawm Txog Cavitation thiab Atomization hauv Diesel Txhaj,” (724).

[2] Arcoumanis, C., Flora, H., and Gavaises, M., 2000, “Cavitation in Real-Size Multi-Hole Diesel Injector Nozzles,” (724).

[3] Reid, B. a., Hargrave, GK, Garner, CP, thiab Wigley, G., 2010, "Kev tshawb nrhiav ntawm txoj hlua cavitation hauv qhov tseeb-scale roj injector ntws geometry ntawm kev kub siab," Phys. Dej, 22(3), p. 031703 ua.

[4] Badock, C., Wirth, R., Fath, A., thiab Leipertz, A., 1999, "Kev tshawb nrhiav cavitation hauv qhov loj me me diesel txhaj nozzles," Int. J. Heat Fluid Flow, 20(5), pp. 538–544.

[5] Blessing, M., König, G., Krüger, C., Michels, U., and Schwarz, V., 2003, “Kev tsom xam ntawm Flow thiab Cavitation Phenomena nyob rau hauv Diesel Txhaj Nozzles thiab kuv cov teebmeem ntawm Txau thiab tov khoom Tsim.”

[6] Cov, a. J., Aleiferis, PG, thiab Richardson, D., 2013, "Kev txhim kho ntawm qhov loj me ntawm qhov muag qhov muag tsis pom kev rau kev tshawb fawb ntawm cavitation, kev tsim tshuaj tsuag thiab flash-boiling ntawm tej yam kev mob uas cuam tshuam rau kev txhaj tshuaj tiv thaiv hluav taws xob, "Int . J. Cav Res., 14(6), pp. 557–577.

[7] Mitroglou, N., McLorn, M., Gavaises, M., Soteriou, C., and Winterbourne, M., 2014, "Instantaneous and ensemble average cavitation structures in Diesel micro-channel flow orifices," Fuel, 116 Ib., 736–742.