Bosch EUP 7.005 Valve Plunger - Txheej Adhesion Integrity & Friction Reduction Rau 0414750/755/799 Series Unit Pumps

 

Nyob rau hauv siab -lub zog hluav taws xob twj tso kua mis (EUP), lub valve plunger swb nyob rau hauv nws bore ntawm velocities tshaj 1.5 m / s thaum raug rau roj pressures txog li 2,000 bar. Nyob rau hauv cov xwm txheej hnyav, lubciam teb kev sib txhuamnruab nrab ntawm lub plunger thiab lub valve lub cev txiav txim siab tsis tsuas yog hnav tus nqi tab sis kuj yogdaim ntawv lo- qhov kev sib txhuam zoo li qub uas yuav tsum tau kov yeej thaum lub sijhawm solenoid actuation. Yog tias qhov kev sib tw tsis sib haum, lub plunger qhov so - lub sijhawm nyob deb txawv ntawm lub voj voog mus rau lub voj voog, qhia lub sij hawm jitter uas ECU tsis tuaj yeem kho tag nrho. Bosch EUP 7.005 yog lub valve plunger tshwj xeeb tsim rau Bosch 0414750, 0414755, thiab 0414799 series twj tso kua mis, nrog rau qhov tshwj xeeb tsim tshwj xeeb:txheej adhesion kev ncaj ncees los ntawm ntau - txheej DLC (pob zeb diamond- zoo li carbon) txheej txheem depositionuas suav nrog chromium -nitride bonding txheej. Qhov no dual - txheej txheej - muaj xws li 0.5 µm CrN adhesion txheej thiab 3.5 µm DLC txheej saum toj kawg nkaus -txo cov coefficient ntawm kev sib txhuam los ntawm 0.12 (cov hlau tsis muaj coated) mus rau 0.06 thiab tuav qhov kev ua tau zoo rau ntau tshaj 1 lab kilometers. Thaum cov txheej txheej pib delaminate vim muaj cov pa paug paug los yog thermal shock, cov hlau ntog ua rau muaj kev sib txhuam thiab hnav sai, ua rau muaj kev cuam tshuam ntawm cov hlau.nce zuj zus nyob rau hauv solenoid actuation ncuauas feem ntau misinterpreted raws li ib tug weakening solenoid. Cov lus qhia no tso cai rau EUP 7.005 raws li qhov chaw ntawm -engineering Cheebtsam, qhov twg txheej adhesion yog qhov tseem ceeb raws li qhov tseeb qhov tseeb.

 

Lub EUP 7.005 valve plunger yog ib qho kev hloov pauv ncaj qha rau tib lub Bosch EUP series raws li cov kev hloov pauv dhau los, tab sis nrog rau qhov sib txawv ntawm cov txheej txheem ntev:

Bosch 0414750- 12-valve EUP hauv MAN D20 / D26, DAF MX cav (Euro 3/4)

Bosch 0414755- Txhim kho Euro 4/5 version rau Volvo D13 thiab Renault DXi

Bosch 0414799- High-flow industrial variant rau gensets thiab marine

Cov EUP sib dhos lub zog no:

MAN TGA, TGS, TGX- D20, D26 cav

DAF XF, CF- MX-11, MX-13 cav

Volvo FH, FM- D13 series (Euro 4/5)

Renault hwm, Magnum– DXi 11, 13

Cov ntawv thov kev lag luam- Liebherr, MTU, Cummins QSK siv Bosch EUP

EUP 7.005 yog txheeb xyuas los ntawm nwsob-tone tsos-dub grey/dub DLC txheej txheej saum toj ib me ntsis sib dua CrN bonding txheej pom ntawm lub plunger cov npoo qhov twg cov txheej txheem hloov. Bosch tus lej feem ntau yog 7.005-xxx lossis 2 418 455 4xx. Nco ntsoov xyuas cov txheej txheem txheej; tej yam tshwm sim ntawm tev los yog discoloration qhia tias lub plunger tau raug cuam tshuam.

 

Parameter	Specification
Bosch Reference	EUP 7.005 (2 418 455 4xx series - paub meej nrog lub twj tso kua mis)
Hom Lub Npe	Valve plunger nrog ntau txheej DLC txheej
Khoom siv hauv paus	Cov cuab yeej kub ceev (ASP 2053) - HRC 62-66
Txheej Txheej Txheej	CrN adhesion txheej (0.5 µm) + DLC txheej sab saum toj (3.5 µm)
Tag nrho Txheej Thickness	4.0 µm ± 0.5 µm
Coefficient ntawm kev sib txhuam	0.06 (DLC-coated) vs . 0.12 (tsis muaj hlau)
Txheej Adhesion Strength	Ntau dua lossis sib npaug rau 30 N / mm² (Rockwell C indentation test)
Tswj Ntug Av Dav	0.75 hli - tib yam li EUP 7.000
Mating Fit Clearance	0.004-0.008 hli (nrog valve lub cev bore)
Txheej Hnav Txwv	0.5 µm txo nyob rau hauv thickness (exposes bonding txheej)
Pom zoo hloov	800,000–1,000,000 km (ntawm txoj kev loj) / 8,000–10,000 teev (kev lag luam)
Txoj kev tshuaj xyuas	Kev tshuaj xyuas qhov muag pom; Kev sib txhuam-based actuation test

 

Ib qho EUP 7.005 nrog cov txheej txheem cuam tshuam qhia nws tus kheej los ntawm cov tsos mob sib txawv:

Ua kom cov solenoid actuation ncua- ntsuas raws li kev nce qib hauv kev ncua ntawm lub zog thiab plunger txav, loj hlob nrog mileage.

Kev sib txuas nrog lub sij hawm jitter- pib txhaj tshuaj sib txawv los ntawm 0.1-0.2 ms, ua rau tsis muaj zog.

Cov khib nyiab dub hauv cov roj rov qab- txheej txheej (microscopic tab sis pom zoo li cov xuab zeb dub zoo hauv cov roj lim) qhia tias delamination.

Scoring ntawm lub plunger nto- pom nyob rau hauv 10 × magnification; liab qab steel cheeb tsam tshwm li polished streaks.

Kev xeem Rhiav: ua akev ntsuas lub zoglos ntawm kev muab lub plunger tso rau hauv ib txoj hlua ntsug thiab ntsuas lub zog uas yuav tsum tau txav mus los (siv lub caij nplooj ntoos hlav ntsuas). Lub plunger tshiab nrog cov txheej tsis zoo yuav tsum tau 5-7 N; ib txheej hnav ua rau nce qhov no mus rau 12-15 N, qhia tias muaj kev sib txhuam loj ntawm ciam teb.

 

Multi-layer DLC txheej siv rau ntawm EUP 7.005 yog tib lub tshuab ua haujlwm nyob rau hauv cov khoom siv hluav taws xob injector valve pistons thiab tswj plungers. CrN txheej txheej yog tsim tshwj xeeb los txhim kho adhesion ntawm steel substrates, ib tug txheej txheem tam sim no tus qauv nyob rau hauv high-performance common-rail injectors. Nkag siab txog EUP 7.005 cov txheej txheem txheej muab cov kws tshaj lij nrog kev paub ncaj qha mus rau kev sib koom ua ke ntawm cov kab hluav taws xob injector valve kev kuaj mob.

 

Q1: Kuv tuaj yeem qhia tau li cas yog tias DLC txheej ntawm kuv EUP 7.005 tseem tsis zoo?
Tshawb xyuas lub plunger hauv qab 10 × magnifying iav. Cov txheej yuav tsum yog ib qho tsaus nti grey / dub, tsis muaj polished me ntsis, chips, los yog pom substrate. Tsis tas li, xyuas cov roj lim rov qab rau cov khoom dub zoo -cov khib nyiab pov tseg qhia tias delamination.

Q2: Kuv puas tuaj yeem siv EUP 7.005 uas muaj cov txheej me me?
Tsis muaj-ib nti hauv DLC txheej yuav nthuav tawm nyob rau hauv lub siab siab, nthuav tawm cov hlau substrate thiab ua rau hnav sai thiab qaug dab peg. Txawm tias ib tug nti ntawm tus tswj ntug yuav hloov lub sij hawm. Muab pov tseg ib qho plunger nrog pom txheej puas tsuaj.

Q3: Puas yog EUP 7.005 tau tshaj 7.000 thiab 6.990 / 6.995?
Lub 7.005 muaj tib thaj av dav (0.75 hli) raws li 7.000 tab sis nrog kev txhim kho CrN + DLC txheej. Nws yog sib xws nrog tag nrho cov 0414750/755/799 twj, muab lub solenoid calibration yog pib dua. Nws muaj kev txhim kho kev sib txhuam kev ua tau zoo tshaj li 7.000 thiab pom zoo raws li kev hloov kho rau cov ntawv thov siab.

Q4: Vim li cas EUP 7.005 muaj txheej txheej CrN?
DLC coatings tsis zoo adhesion rau hlau ncaj qha- CrN txheej ua raws li ib tug neeg kho tshuab thiab tshuaj choj choj, ua rau kom lub zog ntawm daim ntawv cog lus ntau tshaj 40%. Yog tsis muaj txheej txheem no, DLC yuav delaminate tom qab 200,000-300,000 km. Lub 7.005 cov txheej txheem dual-txheej txuas lub neej txheej rau 1 lab km.

Q5: Cov txheej txheej puas tuaj yeem ua rau cov pa luam yeeb dawb thaum pib txias?
Yog-raws li cov txheej txheej hnav, kev sib tsoo nce, ua rau lub sijhawm tsis sib haum ntawm lub plunger tawg. Qhov kev txhaj tshuaj-rau-injector lub sijhawm hloov pauv tuaj yeem ua rau tsis tiav combustion thaum pib txias, tsim cov pa luam yeeb dawb. Hloov lub plunger nrog 7.005 tshiab rov ua haujlwm tsis tu ncua thiab tshem tawm qhov teeb meem.

Q6: Kuv tuaj yeem tiv thaiv cov txheej txheem los ntawm kev hnav ntxov ntxov?
Tswj xyuas cov roj lim nruj (10 µm kiag li) thiab tsis txhob nkag mus rau hauv dej - dej tuaj yeem ua rau cov kab mob me me uas ua rau cov txheej txheem tsis muaj zog. Tsis tas li ntawd, tsis txhob siv cov roj uas muaj roj tsawg yam tsis muaj cetane/lubricity additive, vim qhov kev sib txhuam ntau tuaj yeem ua rau cov txheej txheej hnav.

 

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!

 

 

Cim npe nrov: bosch eup 7.005 valve plunger - txheej adhesion kev ncaj ncees & kev sib txhuam txo rau 0414750/755/799 series chav tsev twj, Tuam Tshoj bosch eup 7.005 valve plunger - txheej adhesion kev ncaj ncees & kev sib txhuam txo rau 0414750 manufacturers, 799 units, Hoobkas