VT0-G166W48B / RX52407500024 Roj Injector – Txau Qhov Geometry Nrog Multi-Phase Flow Stability|Engineered Rau Kev Sib Txuas Atomization Hla Varying Rail Pressures hauv Euro VI Medium-Duty Cav

Hauv kev txhaj tshuaj sib xyaw ua ke, qhov zoo ntawm atomization - qhov loj me me thiab cov tshuaj tsuag dispersion - yog qhov tseem ceeb rau kev ua kom tiav. Txawm li cas los xij, lubtsuag qhov geometrytxiav txim siab tsis tsuas yog qhov pib atomization ntawm ib qho chaw siab xwb tab sis kuj yuav ua li cas cov tshuaj tsuag coj li kev tsheb ciav hlau sib txawv ntawm qhov tsis ua haujlwm (300 bar) mus rau tag nrho cov load (1,600 bar). Nyob rau hauv ntau lub injectors, lub koob txhaj tshuaj lub kaum sab xis yog nqaim los ntawm 5-8℃thiab qhov tob tob nce los ntawm 15-20% ntawm qhov qis thiab siab, hloov cov huab cua-roj sib xyaw thiab ua rau muaj pa taws ntau ntxiv ntawm cov khoom qis lossis phab ntsa ntub dej ntawm qhov siab. CovVT0-G166W48B / RX52407500024 injectorhais qhov no los ntawm amulti-phase flow-stable tsuag qhov geometry, featuring ib tug zuj zus inlet vojvoog uas hloov los ntawm ib tug ntse ntug ntawm lub sac nkag mus rau ib tug smoother profile mus rau lub orifice tawm. Qhov geometry no tswj cov tshuaj tsuag lub khob kom ruaj khov ntawm qhov sib txawv ntawm tsawg dua ± 2℃thiab qhov sib txawv ntawm qhov sib txawv ntawm tsawg dua 5% thoob plaws 300-1,600 bar ntau yam, kom ntseeg tau tias qhov zoo ntawm combustion tseem zoo ib yam tsis hais lub cav thauj khoom- xa cov khoom nqus tsev vacuum thaum tsis muaj zog thiab tag nrho lub zog zoo ib yam.

Cov tshuaj tsuag atomization yog tswj hwm los ntawm kev sib cuam tshuam ntawm qhov nrawm nrawm, qhov chaw ntawm qhov chaw, thiab cov khoom ua kua dej. Thaum tsis tshua muaj kev tsheb ciav hlau siab, cov roj tshaj tawm qis dua, thiab cov tshuaj tsuag tso siab rau ntawm lub qhov ncauj qhov chaw nkag los ua kom muaj kev kub ntxhov uas ua rau lub dav hlau tawg mus rau hauv cov tee dej. Thaum lub siab siab, qhov nrawm nce, thiab cov tshuaj tsuag hloov mus rau lub xeev atomized ntau dua. Yog hais tias lub orifice geometry tsis zoo rau qhov kev hloov no, cov yam ntxwv tshuaj tsuag hloov - lub khob hliav qab lub kaum sab xis nqaim, cov tee dej loj dua, thiab kev nkag mus tau hloov.

VT0-G166W48B / RX52407500024 stabilizes cov tshuaj tsuag los ntawm:

① Progressive Inlet Radius- Hloov ntawm ib qho ntse los yog chamfered inlet, lub orifice nta ib tug ob-theem profile: ib tug ntse ntug ntawm lub sac nkag ua rau siab shear thiab pib atomization ntawm qis siab, thaum ib tug zuj zus smoother vojvoog mus rau qhov tawm stabilizes ntws ntawm siab. Qhov kev tsim qauv dual-profile no ua kom ntseeg tau tias cov tshuaj tsuag tsim tau zoo ib yam thoob plaws tag nrho cov siab ntau.

② Optimized Length-rau-Diameter Ratio- Lub orifice L / D piv yog teem rau 4.8, muab ntev txaus kom stabilize qhov ntws ntawm kev kub siab yam tsis muaj kev sib txhuam ntau dhau ntawm qhov tsis tshua muaj siab. Qhov piv txwv no tau txheeb xyuas los ntawm kev suav cov kua dej dynamics (CFD) simulations thiab validated ntawm lub rooj zaum tshuaj tsuag.

③ Tswj Nto tiav- Lub qhov rooj sab hauv yog polished rau Ra < 0.08 µm, txo cov ciam teb txheej turbulence uas tuaj yeem ua rau tsis sib xws atomization ntawm qhov tsis tshua muaj siab thaum tiv thaiv cov shear ntau dhau uas degrades cov tshuaj tsuag ntawm kev kub siab.

④ Sac Volume Optimization- Lub hnab ntim tau tuav ntawm 0.16 mm³, me me kom tiv thaiv lub siab oscillations tab sis loj txaus los muab xya lub qhov sib npaug sib npaug, tswj qhov sib npaug ntawm qhov sib txawv ntawm qhov tsawg dua lossis sib npaug li ± 3.5% hla qhov siab ntau.

High-speed imaging ntawm lub rooj zaum tshuaj tsuag (300-1,600 bar) qhia tau hais tias VT0-G166W48B / RX52407500024 tuav lub khob hliav qab ntawm 154℃± 1.5℃thiab ib tug nkag variation ntawm tsawg tshaj li 5%, piv rau ib tug txheej txheem injector. ntawm 18% hla tib lub siab ntau yam. Qhov tshwm sim ntawm Sauter Mean Diameter (SMD) variation yog tsawg dua 8%, kom ntseeg tau tias qhov loj me me rau kev ua tiav ntawm txhua qhov loads.

Txhua VT0-G166W48B / RX52407500024 injector tau dhau 9-theem validation nrog rau qhov tseem ceeb ntawm cov tshuaj tsuag ruaj khov thoob plaws lub siab:

◈ Txau lub khob hliav qab ntsuas- ntawm 300, 600, 900, 1,200, 1,500, 1,600 bar; Lub kaum sab xis yuav tsum nyob hauv 152-156℃thoob plaws txhua qhov kev ntxhov siab.
◈ Kev ntsuas qhov nkag- nyob rau tib lub siab; qhov siab tshaj qhov sib txawv Tsawg dua lossis sib npaug li 6%.
◈ Droplet loj tsom xam- SMD ntawm 1,200 bar thiab 1,600 bar; variation Tsawg dua los yog sib npaug li 10%.
◈ Dynamic flow map- 6 siab × 5 mem tes dav ntsiab lus; R² > 0.998.
◈ High-pressure foob- helium leak test ntawm 1,700 bar; <6 × 10⁻⁶ mbar·l/s.
◈ Thermal drift- qhib ncua ntawm −20 degree, +20 degree, +100℃; Hloov tsawg dua lossis sib npaug li 3.5 µs.
◈ Kev ua siab ntev- 6 lab lub voj voog ntawm 1,400 bar, ua raws li cov qauv tshuaj tsuag rov ua dua.
◈ Qhov dej-rau-qhov ntws- txhua qhov chaw ntsuas tus kheej; variation Tsawg dua lossis sib npaug ± 3.5%.
◈ Traceability- txhua chav muaj 2D barcode txuas rau daim ntawv pov thawj nrog cov ntaub ntawv kev ruaj ntseg tshuaj tsuag.

🔧 Mechanical haum:

Siv cov khoom siv tooj liab thiab O-rings. Xyuas kom huv si huv si -Txhua qhov khib nyiab nyob ze ntawm lub nozzle tuaj yeem hloov cov qauv tshuaj tsuag.

Torque high-pressure noob rau30 Nm + 75 degree- tsis pub tshaj 37 Nm; over-torquing tuaj yeem cuam tshuam lub ntim ntim thiab hloov cov yam ntxwv tshuaj tsuag.

Xyuas kom rov qab kab rov qab-siab tsawg dua lossis sib npaug rau 2.0 bar.

💻 ECU programming:

Nkag mus rau 7-tus cim IQA code siv Cummins INSITE™, Bosch ESI [tronic], lossis sib npaug.

Ua kom hloov kho dua tshiab thiab tsis ua haujlwm li 5 feeb. ECU yuav hloov mus rau cov yam ntxwv ntawm cov tshuaj tsuag ruaj khov.

⚠️ Tseem ceeb: Multi-phase ruaj khov tshuaj tsuag tso siab rau lub ntim ntim ntim thiab cov duab kos duab. Ib qho kev sib kis lossis kev tso nyiaj tso rau ntawm lub taub hau lub taub hau yuav hloov pauv qhov ntws thiab ua rau cov tshuaj tsuag tsis zoo - khaws cov roj pom zoo thiab xav txog kev tu lub sijhawm ua haujlwm rau kev ua haujlwm siab.

Txo cov pa luam yeeb thaum qis qis- Cov tshuaj tsuag atomization zoo ib yam ntawm cov tsheb ciav hlau tsis tshua muaj siab ua kom muaj kev sib txuas ua tiav txawm tias nyob twj ywm, txo cov pa taws pom thiab cov pa phem.

Tsis muaj phab ntsa-wetting ntawm high load- Kev nkag mus ruaj khov tiv thaiv cov roj los ntawm kev cuam tshuam ntawm lub tog raj kheej phab ntsa lossis piston crown, txo cov roj dilution thiab soot tsim.

Kev lag luam roj zoo ib yam- Cov tshuaj tsuag zoo ib yam thoob plaws cov khoom ua kom ntseeg tau tias huab cua-roj sib xyaw ua haujlwm tseem siab, khaws cia roj ua haujlwm tsis hais txog kev ua haujlwm.

Tsawg DOC / DPF load- Qhov ruaj khov atomization txo qhov tsim ntawm cov hmoov av precursors, txuas ntxiv DPF rov tsim dua tshiab thiab txo cov roj nplua nuj.

Q1: Kuv lub tsheb npav ISBe 6.7 ua rau pom cov pa luam yeeb ntawm qhov tsis ua haujlwm, tab sis ua haujlwm huv ntawm cov khoom hnyav dua. Qhov no puas yog qhov teeb meem kev ruaj ntseg?
Yog-yog tias lub kaum sab xis ntawm cov tshuaj tsuag lub khob hliv qis los yog qhov nkag mus tau qis qis, cov roj yuav tsis sib xyaw nrog huab cua zoo, ua rau tsis tiav combustion. VT0-G166W48B / RX52407500024 tuav cov qauv tshuaj tsuag ruaj khov thoob plaws qhov siab, tshem tawm qhov tsis muaj pa taws. Tom qab kev teeb tsa, koj yuav tsum pom qhov txo qis hauv cov pa taws pom ntawm qhov tsis ua haujlwm.

Q2: Kuv puas tuaj yeem nruab qhov kev txhaj tshuaj no rau ntawm lub cav uas yog siv cov tshuaj tsuag qhov sib txawv?
Yog, sab nraud qhov ntev thiab connector yog tib yam. Txawm li cas los xij, vim tias cov yam ntxwv tshuaj tsuag txawv, ECU yuav hloov kho los ntawm IQA code thiab cov txheej txheem hloov kho. Peb pom zoo kom txhim kho cov txheej txheem tag nrho ntawm cov tshuaj no kom ntseeg tau tias cov tshuaj tsuag zoo ib yam thoob plaws txhua lub tog raj kheej.

Q3: Lub tshuab txhaj tshuaj muaj lub vojvoog nkag mus ua haujlwm- qhov no puas ua rau nws muaj feem cuam tshuam rau kev txhaws?
Cov geometry nce qib yog smoothed thiab polished, uas txo cov deposit adhesion piv rau ib tug ntse ntug. Lub hnab ntim thiab cov kab uas hla ntawm lub qhov ncauj yog tus qauv, yog li kev pheej hmoo ntawm kev txhaws tsis muaj ntau dua li cov tshuaj txhaj tshuaj. Kev tswj xyuas kom zoo (3-micron absolute) tseem yog qhov tseem ceeb.

Q4: Daim ntawv pov thawj kev ruaj ntseg tshuaj tsuag qhia lub khob lub kaum sab xis ntawm rau lub siab. Kuv yuav tsum txhais cov ntaub ntawv no li cas?
Daim ntawv pov thawj teev cov ntsuas lub kaum sab xis ntawm txhua qhov siab (piv txwv li, 154.5℃ntawm 300 bar, 155.0℃ntawm 600 bar, 154.8℃ntawm 1,200 bar, thiab lwm yam). Qhov sib txawv ntawm qhov tsawg kawg nkaus thiab qhov siab tshaj plaws yuav tsum tsawg dua lossis sib npaug li 2.0 degree. Ib qho kev hloov pauv loj dua qhia tias lub tshuab txhaj tshuaj tsis ua raws li ntau theem kev ruaj ntseg specification- cov units no raug tshuaj xyuas thaum tsim khoom.

Q5: Kuv siv lub tshuab ua haujlwm siab uas ua rau kev tsheb ciav hlau nce mus txog 1,600 bar. Puas yuav cov tshuaj tsuag ruaj khov tuav ntawm lub siab ntawd?
Yog lawm, cov tshuaj tsuag ruaj khov yog siv tau txog li 1,600 bar. Qhov kev nce qib inlet geometry yog tsim los kom ruaj khov ntawm qhov siab tshaj plaws nyob rau hauv lub injector kev khiav hauj lwm ntau yam. Lub cone lub kaum sab xis thiab nkag mus yuav nyob twj ywm hauv qhov kev hloov pauv.

Q6: Lub injector tuaj nrog kev ceeb toom tsis txhob siv cov cua compressed los ntxuav lub taub hau taub hau. Yog vim li cas?
Cov cua compressed tuaj yeem qhia cov dej noo thiab cov khoom mus rau hauv lub nozzle, thiab lub siab tshaj tawm tuaj yeem ua rau lub vojvoog nkag mus tau zoo. Yog tias tsim nyog, siv cov tshuaj ntxuav lub nozzle thiab da dej ultrasonic-tsis txhob siv cov cuab yeej siv los yog cov cua siab ncaj qha rau ntawm qhov chaw.

 

Txhawm rau ua kom koj qhov kev yuav khoom tau yooj yim thiab yooj yim, peb muab ntau yam kev xaiv them nyiaj ruaj ntseg:

Peb nyob ntawm no los ua kom koj cov txheej txheem xaj kev txhawj xeeb-dawb - xaiv txoj kev them nyiaj uas ua haujlwm zoo tshaj rau koj!

 

 

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