Dizilo Injector Mafuta 0445120056 Bosch kwa Man Engine

Dynamic cavitation mkati mwa jekeseni wa dizilo wapamwamba kwambiri - kafukufuku woyesera ndi CFD(Gawo 1）

Ndemanga.

Kuphatikizika koyerekeza ndi njira zapadera zoyesera zakhala zikugwiritsidwa ntchito pofufuza zakuyenda kwakanthawi komanso zochitika za cavitation za chipangizo chowongolera mkati mwa jekeseni wa dizilo wapamwamba kwambiri. Khalidwe lamphamvu la cavitation lidagwidwa pamtundu waukulu wowonekera, womwe udagwiritsidwa ntchito kupanga ndikutsimikizira mtundu wa chipwirikiti wa CFD wokhala ndi Large Eddy Simulation. Njirazi zimagwiritsidwa ntchito mkati mwa Delphi kuti mupeze chidziwitso ndikuwongolera magwiridwe antchito a jekeseni pakukula kwenikweni.

1 Mawu Oyamba

Injector ya dizilo mwachidziwikire ndiye chinthu chofunikira kwambiri pakukwaniritsa magwiridwe antchito a injini ya premium ndi mpweya wochepa. Choncho zimatsatira kuti majekeseni a injini zogwira ntchito kwambiri ayenera kuyendetsedwa bwino. Zotsatira zake, ma hydraulic control valves ndi orifices amayenera kupangidwa ndikupangidwa molondola kwambiri, ndipo kumvetsetsa chikhalidwe chawo chofunikira kumapereka chithandizo chofunikira pakukhathamiritsa ndi kukonza bwino. Delphi amagwiritsa ntchito njira zofananira komanso njira zapadera zoyesera kuti afufuze mawonekedwe oyenda a zidazi.

Monga ndi majekeseni onse atsopano, Injector Yapamwamba ya Dizilo yomwe ikupangidwa ku Delphi yakhala ikugwiritsidwa ntchito kwambiri poyerekezera. Chochititsa chidwi kwambiri ndi pepalali, ndikufufuza kwa CFD kwa ntchito zowongolera ma hydraulic.

Flow cavitation ndi mutu wodziwika bwino mu zida za jekeseni wa dizilo; zomwe zachitika m'mbuyomu zidawonetsa kuti mawonekedwe amakampani a Reynolds-Averaged Navier-Stokes (RANS) sanathe kupereka zotsatira zolondola zamakhalidwe amphamvu a cavitation. Chifukwa chake kuwonjezera pa ntchito ya CFD, mitundu yayikulu (LSM) ya magawo osiyanasiyana a ntchito zowongolera ma hydraulic adatumizidwa. Kugwiritsiridwa ntchito kwa zitsanzo zowonekera za ma valve olamulira ndi ma orifices pamiyeso yowonjezereka kwambiri kumathandizira kumvetsetsa bwino kwa machitidwe a hydraulic [1] zomwe sizitheka mosavuta ndi njira zina. Kuchita kwa ma hydraulic kumakhala kodziyimira pawokha pamiyeso yonse kuti ikhale yothandiza ngati chida chachitukuko [2].