Mitundu ya turbine geometry - ndiyabwino kuposa geometry yokhazikika?

Mitundu yoyambirira ya ma turbocharger idayendetsedwa ndi kukakamizidwa komwe kumagwiritsidwa ntchito ku wastegate. Pamene mphamvu yowonjezereka yafika, valavuyo inatsegulidwa, kulola kuti mpweya wochuluka utuluke mu utsi. Geometry yosinthika ya turbine imagwira ntchito mosiyana ndikuphatikizanso zomwe zimatchedwa. zowongolera, i.e. zopalasira. Kodi zonsezi ndi chiyani? timayankha!

Kodi Variable Geometry Turbine ndi chiyani?

Monga tafotokozera pamwambapa, turbine geometry mu VHT compressor (kapena VGT kapena VTG kutengera wopanga) imatha kukhazikika kapena kusinthika. Lingaliro ndikuwongolera mpweya wotulutsa mpweya wopangidwa ndi injini moyenera momwe mungathere. VNT turbine ili ndi mphete yowonjezera pambali yotentha. Zopalasa (kapena zowongolera) zimayikidwa pamenepo. Mbali ya kupatuka kwawo imayendetsedwa ndi vacuum valve. Masambawa amatha kuchepetsa kapena kuonjezera danga la mpweya wa flue, womwe umakhudza kuthamanga kwa kayendedwe kawo. Izi zimalola chowongolera chakumbali chotentha kuti chizizungulira mwachangu ngakhale osagwira ntchito.

Kodi turbocharger yokhazikika komanso yosinthika imagwira ntchito bwanji?

Injini ikakhala idless kapena kutsika kwa rpm (malingana ndi kuphatikiza kwa injini ndi kukula kwa turbine), pamakhala mpweya wokwanira wokwanira kuti turbine isapangitse kuthamanga kwamphamvu. Turbo lag imachitika pamene chopondapo cha gasi chikanikizidwa mwamphamvu pamagawo okhazikika a geometry turbo. Iyi ndi mphindi yakukayikira ndipo palibe mathamangitsidwe adzidzidzi. Mpweya woterewu sungathe kufulumira nthawi yomweyo.

Ntchito yosinthika ya geometry turbine

Kusintha kwa geometry ya turbine kumatanthauza kuti ngakhale pa rpm yotsika, injini ikatulutsa mpweya wochepa wotulutsa mpweya, mphamvu yogwiritsira ntchito mphamvu imatha kupezeka. Vavu ya vacuum imayendetsa chiwongolero kuti chichepetse kutuluka kwa mpweya ndikuwonjezera kuthamanga kwa mpweya. Izi zimabweretsa kusinthasintha kwachangu kwa rotor ndi kuzungulira kwa gudumu lopondereza kumbali yozizira. Ndiye ngakhale makina osindikizira apompopompo pa accelerator mosazengereza adzamasulira momveka bwino.

Mapangidwe amitundu yosiyanasiyana ya geometry turbocharger ndi turbocharger wamba

Dalaivala akuyang'ana turbine kuchokera kunja sangazindikire kusiyana pakati pa mtundu wina ndi wina. Zosintha za geometry zimabisika kumbali yotentha ndipo sizidzawoneka ndi maso. Komabe, mukayang'anitsitsa, mutha kuwona gawo lalikulu kwambiri la turbine pafupi ndi kuchuluka kwa utsi. Zowongolera zowonjezera ziyenera kulowa mkati. Mu mitundu ina ya ma turbine a VNT, palinso ma valve owongolera ma electro-pneumatic okhala ndi injini yowonjezera ya stepper, yomwe imawonekeranso poyang'ana zida.

Turbine - zosinthika geometry ndi ubwino wake

Chimodzi mwazabwino za dongosololi lomwe mukudziwa kale ndikuti chimachotsa zotsatira za turbo lag. Pali njira zingapo zochotsera chodabwitsa ichi, monga kukulitsa kusakaniza kapena kugwiritsa ntchito ma turbocharger osakanizidwa. Komabe, ma turbine geometry osinthika amagwira ntchito bwino m'magalimoto okhala ndi ma injini ang'onoang'ono pomwe mapindikidwe a torque ayenera kukhala okwera mwachangu momwe angathere. Komanso, kuti pachimake ndi rotor ndi psinjika gudumu imathandizira, injini sayenera kutembenuzidwira kwa liwiro mkulu. Izi ndizofunikira pa moyo wa unit, zomwe zimatha kupanga torque yayikulu pama RPM otsika.

Turbocharger yokhala ndi geometry yosinthika - zovuta

Zoyipa za turbine yosinthika ya geometry ndi:

• zovuta zazikulu za mapangidwe a chipangizocho chokha. Izi zimabweretsa mtengo wogula ndi kukonzanso makina opangira magetsi otere;
• makina owongolera mavane amatha kuipitsidwa. 

Kugwiritsa ntchito molakwika galimoto (ndi injini yokhayo) kumatha kufupikitsa moyo wa turbocharger. Kutuluka kulikonse mu dongosolo lozizira ndi kupanikizika kumakhalanso ndi zotsatira zazikulu pa ntchito ya chigawocho. Mwamwayi, ma geometry osinthika amapangidwanso ndipo nthawi zambiri safunikira kusinthidwa.

Ndizovuta kuti musazindikire kuti kusintha kwa geometry ya turbine ndiyothandiza, yomwe mungayamikire kwambiri mukamayenda mozungulira mzindawo ndikudutsa. VNT imakulolani kuti muchepetse mphamvu ya turbo lag mpaka pafupifupi ziro. Komabe, zikalephera, zimakhala zovuta kwambiri kubwezeretsa magawo oyambirira a zinthu zosinthidwa. Ngakhale kuti nthawi zonse sizifunikira kusinthidwa ndi zatsopano, zimakhala zovuta kuzikonza kusiyana ndi zigawo zachikhalidwe. Kusintha kwa magwiridwe antchito kumatha kuwonedwa, mwachitsanzo, poyendetsa mabuleki. Muyenera kusankha ngati geometry yosinthika ndiyabwino pagalimoto yanu kuposa geometry yokhazikika.