Bosch EUI 7.010 Valve Plunger - Tswj Ntug Lead-In Geometry & Sharpness Retention Rau 0414700/701/702 Series Unit Injectors

 

Hauv Bosch twj-nozzle unit injector (EUI) system, lub valve plunger tswj ntug- qhov kev sib tshuam uas cov av tau raws li qhov chaw nres nkoj spill- txiav txim siab tus nqi ntawm lub plunger qhib thiab kaw txoj kev roj siab. Txawm li cas los xij, nws tsis yog tsuas yog ntug lub sharpness uas tseem ceeb: lublead-hauv geometry- qhov contour ntawm qhov chaw tam sim ntawd ua ntej ntawm ntug tswj- tswj cov kev hloov pauv ntawm laminar mus rau turbulent, ncaj qha cuam tshuam rau qhov txhaj tshuaj npaum li cas. Ib qho kev tsim tsis zoo ntawm cov hlau lead-hauv tsim cov dej sib cais thiab cavitation, cuam tshuam rau kev txhaj tshuaj tsav thiab tsim kom muaj qhov "hnyav" pib ntawm combustion. Bosch EUI 7.010 yog lub valve plunger tshwj xeeb tsim rau Bosch 0414700, 0414701, thiab 0414702 series injectors, nrog rau qhov tshwj xeeb tsim tshwj xeeb:tswj ntug lead-hauv optimization thiab sharpness tuav. Qhov no plunger nta amulti-radius lead-hauv contour-kev hloov pauv mus los ntawm 5℃kaum sab xis nyob ze ntawm thaj av mus rau 15℃lub kaum sab xis ntawm ntug- uas coj cov roj mus rau hauv qhov chaw nres nkoj, txo qis kev sib cais thiab tswj cov laminar tej yam kev mob txawm nyob rau hauv siab nqa. Lub ntug nws tus kheej yog tsim nrog atswj ntug vojvoog ntawm <0.005 mmthiab khaws cia los ntawm cov txheej txheem nyuaj-txheej txheem uas tiv taus cov erosive hnav los ntawm cavitation. Thaum siv lub plunger nrog tus qauv 45℃chamfer, qhov kev hloov pauv tam sim ntawd tsim "snap" qhib uas ua rau kev txhaj tshuaj nce ntxiv, ua rau muaj tus yam ntxwv."knock" thaum tsav kev txhaj tshuajuas feem ntau yuam kev rau qhov teeb meem injector nozzle. Phau ntawv qhia no rov txhais lub EUI 7.010 ua ibflow-dynamic tivthaiv, qhov twg ntug micro-geometry txiav txim siab txhaj tshuaj kom zoo.

 

EUI 7.010 valve plunger yog ib qho kev hloov pauv ncaj qha rau cov hauv qab no Bosch twj-nozzle chav injector series:

Bosch 0414700- Standard EUI rau Euro 3/4 lub cav hauv MAN, DAF, thiab cov ntawv thov Volvo thaum ntxov

Bosch 0414701- Txhim kho version rau Euro 4/5 nrog lub peev xwm ntau dua

Bosch 0414702- Hnyav-duty variant rau industrial thiab marine daim ntaub ntawv

Cov chav injectors no tau nruab rau hauv:

MAN D20, D26engines nyob rau hauv TGA, TGS, TGX tsheb

DAF MX-11, MX-13engines nyob rau hauv XF, CF series

Volvo D13(thaum ntxov Euro 4/5) hauv FH, FM tsheb thauj khoom

Renault DXi 11, 13hauv Premium, Magnum

Industrial gensets thiab marinesiv tib lub injector platform

EUI 7.010 tau txheeb xyuas los ntawm nwsmulti-radius lead-hauv contour-pom zoo li lub pob zeb polished tam sim ntawd ua ntej tswj ntug-thiab adark-coated ntouas resists ntug erosion. Bosch tus lej feem ntau yog 7.010-xxx lossis 2 418 455 4xx (cov lus qhia tshwj xeeb).

 

Parameter	Specification
Bosch Reference	EUI 7.010 (2 418 455 4xx series - paub meej nrog cov tshuaj txhaj)
Hom Lub Npe	Valve plunger nrog optimized lead-in geometry
Khoom siv hauv paus	Kev kub ceev cov cuab yeej hlau (ASP 2053) - core hardness HRC 58-62
Kev kho saum npoo	Hard txheej + ntug tuav txheej
Lead-In Angles	5℃kev hloov pauv → 15℃ntawm ntug (progressive contour)
Tswj Edge Radius	Tsawg dua los yog sib npaug ntawm 0.005 hli (tshiab) - tswj los ntawm txheej
Flow Separation Point	Ntau dua lossis sib npaug li 95% ntawm kev nqa tag nrho (vs . 70% rau tus qauv chamfer)
Cavitation Erosion Rate	Tsawg dua los yog sib npaug li 0.001 mm rau 100,000 cycles
Tswj Ntug Av Dav	0.70mm ib
Sealing Av Diameter	5.980-5.985 hli
Mating Fit Clearance	0.004-0.007 hli
Peak Pressure Capability	Ntau dua lossis sib npaug rau 1,800 bar
Pom zoo hloov	600,000–800,000 km (ntawm txoj kev loj) / 6,000–8,000 teev (kev lag luam)
Txoj kev tshuaj xyuas	Ntug vojvoog check; lead-hauv contour tshuaj xyuas

 

Ib qho EUI 7.010 uas tau hloov pauv nrog tus qauv-chamfer plunger qhia nws tus kheej los ntawm cov tsos mob ntsig txog kev khiav dej num:

Pilot txhaj koob- lub suab nrov "knocking" thaum tsav kev txhaj tshuaj, uas yog smoother nyob rau hauv lub ntsiab txhaj tshuaj.

Nce combustion nrov- lub cav suab "harsher" nyob rau hauv lub teeb load, qhia tau hais tias ib tug tam sim ntawd txhaj tus nqi nce.

Txo qis-load refinement- Lub cav ua haujlwm qis qis xav tias "ntxhiab," nrog kev co xa mus rau hauv chav tsev.

Progressive lub sij hawm drift- Raws li ntug erodes, cov yam ntxwv ntws hloov pauv, ua rau ECU lub sijhawm txav mus.

Kev ntsuam xyuas kev cob qhia: piv cov injector tam sim no waveform lub "plateau" zoo- thaj tsam uas lub solenoid tuav lub plunger. Ib qho kev hloov pauv hauv lub waveform qhia tias laminar ntws; ib tug ntse "spike" qhia tias ntws sib cais.

 

Lub tswvyim ntawm lead-in geometry optimization yog ib qho tseem ceeb nyob rau hauv common-rail injector pilot li qub, qhov twg tus tswj ntug txiav txim siab tus nqi txhaj tshuaj. Ntau qhov kev tswj hwm txoj kev tsheb ciav hlau tam sim no suav nrog kev txhim kho cov hlau lead hauv kev tsim kom ua tiav "square" txhaj tshuaj tus nqi nyiam rau kev txo suab nrov. Nkag siab txog EUI 7.010's edge geometry muab ib qho piv txwv ncaj qha rau cov khoom siv hluav taws xob sib xyaw ua ke.

 

Q1: Dab tsi yog cov hlau lead hauv contour thiab vim li cas nws tseem ceeb?
Cov lead-in contour yog qhov hloov pauv ntawm qhov chaw ua ntej ntawm ntug tswj. Nws tswj xyuas seb cov roj nkag mus rau qhov chaw nres nkoj li cas; ib tug zuj zus contour khaws cov ntws laminar, txo cavitation thiab suab nrov.

Q2: EUI 7.010 txawv li cas ntawm tus qauv plunger?
Tus qauv plunger feem ntau muaj qhov yooj yim 45℃chamfer, uas tsim kev hloov pauv sai. EUI 7.010 muaj ntau lub vojvoog ua ntej-hauv uas coj cov roj ua kom zoo, tshem tawm cov kev sib cais thiab kev sim txhaj tshuaj.

Q3: Kuv puas tuaj yeem siv EUI 7.010 hauv cov tshuaj txhaj tshuaj uas yog siv 7.005?
Yog-lub 7.010 yog qhov sib npaug nrog txhua qhov 0414700/701/702 injectors. Nws ntxiv qhov optimized lead-in geometry, uas txhim kho kev txhaj tshuaj zoo dua qub thiab pom zoo rau cov cav tov nrog kev txhawj xeeb txog kev sib tsoo.

Q4: Kuv tuaj yeem txheeb xyuas lub voj voog ntawm ntug yam tsis muaj cov cuab yeej tshwj xeeb?
Lub 20 × magnification eyepiece nrog ib tug sib piv reticle tuaj yeem kwv yees lub vojvoog ntawm ntug. Ib tug ntse ntug yuav tsum tsis pom kev puag ncig; txhua lub vojvoog kuaj pom tau tshaj qhov txwv 0.005 hli. Txhawm rau ntsuas qhov tseeb, yuav tsum muaj qhov profileometer.

Q5: Dab tsi ua rau ntug hnav?
Ntug hnav yog tshwm sim los ntawm cavitation yaig (los ntawm kev sib cais) thiab cov khoom abrasive hauv cov roj. EUI 7.010 qhov kev ua tau zoo ntawm cov hlau lead hauv txo qis kev sib cais, thaum cov txheej tawv tawv tiv taus cov khoom yaig.

Q6: Cov ntug hnav puas tuaj yeem cuam tshuam rau ECU kev hloov pauv?
Yog-raws li cov ntug hnav, cov yam ntxwv ntws hloov pauv, xav kom ECU kho lub sijhawm them nyiaj. Nyob rau tib lub sijhawm, kev hloov pauv tuaj yeem ncav cuag nws qhov txwv, ua rau muaj kev txhaum cai. Hloov lub plunger rov qab tsim cov yam ntxwv ntws.

 

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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