Plunger Assembly 00U4022|Volumetric Displacement & Metallurgical Integrity rau HP Pumps

Hauv cov qauv kev tsheb ciav hlau, cov roj siab tsis yog "tsim" los ntawm cov khoom siv hluav taws xob tab sis los ntawm cov neeg kho tshuab txhais lus meej ntawm lub zog hloov mus rau hauv kev hloov pauv. Lub plunger sib dhos 00U4022 ua haujlwm raws li lub plawv hydraulic ntawm qhov kev hloov pauv no -tsis tau nws qhov kev ua tau zoo txuas mus deb dhau ntawm txoj kab uas hla raw thiab ntev stroke. Tsis zoo li cov actuators lossis sensors uas tswj cov teeb liab tswj, cov khoom no dictates lubvolumetric efficiency ciam tebntawm tag nrho lub siab - lub twj tso kua mis. Txhua qhov sib txawv ntawm 0.001 hli nyob rau hauv nws cov cylindrical geometry ncaj qha hloov cov roj huab hwm coj xa mus rau ib lub cam lobe kiv puag ncig, ua rau nws yog ib qho kev txiav txim siab rau kev txhaj tshuaj lub sij hawm ruaj khov nyob rau hauv ib ntus loads.

Lub 00U4022 nta ib tug precision - hauv av active txoj kab uas hla ntawm 10.0 mm (+0/-0.0025 mm) nrog rau tag nrho cov zoo stroke ntawm 14.5 mm. Txawm li cas los xij, qhov tseem ceeb engineering parameter tsis yog lub ntim ntim ib leeg (1.14 cc ib stroke) tab siscompression pivnyob rau hauv lub twj tso kua mis chamber - xam ntawm 18.5: 1 thaum ua ke nrog nws cov chim siab. Qhov piv no ua kom cov roj compressibility (kwv yees li 1.8% ib 100 bar ntawm 40 degree) yog lej them ua ntej lub valve qhib, lav tias kev tsheb ciav hlau siab tsim - nce latency nyob qis dua 180 ms thaum lub caij txias pib.

Qhov tseem ceeb hydraulic metrics muaj xws li:

Leakage kam rau ua:Tsawg dua lossis sib npaug li 4.8 cc / min ntawm 1,800 bar hydrostatic test siab ( ntsuas los ntawm qhov chaw nres nkoj helical inlet)

Rov qab caij nplooj ntoos hlav tus nqi:3.2 N / mm nrog preload teem ntawm 82 N, xyuas kom cov neeg taug qab mus txog 4,200 rpm

Inlet chaw nres nkoj lub sijhawm:12℃ua ntej qhov chaw tuag saum toj kawg nkaus (BTDC), ua kom zoo tshaj qhov ua tau zoo ntawm cov roj viscosities sib txawv

Qhov twg generic aftermarket plungers poob ntxov ntxov vim micro- vuam, lub 00U4022 ntiav ib tug los ntawm -hardened bearing steel (DIN 1.3505 sib npaug) nrog ib tug refined austenitic grain loj ntawm ASTM Tsis muaj. 8. Qhov tseem ceeb ntawm nws cov proprietary lies.phosphate-manganese txheejthov ntawm 0.008–0.012 mm thickness- txheej no ua raws li ib tug sacrificial ciam lubricant thaum lub sij hawm pib khiav- nyob rau hauv theem, txo cov coefficient ntawm kev sib txhuam ntawm lub chim los ntawm 0.15 mus rau 0.06 nyob rau hauv starved lubrication tej yam kev mob.

Surface texture analysis qhia:

Longitudinal roughness (Ra):0.04 µm (daim iav tiav) kom txo tau cov nplaum nplaum

Circularity:Tsawg dua los yog sib npaug li 0.5 µm los tiv thaiv lub tshuab siab -los ntawm

Micro{0}}hardness gradient:780 HV0.1 ntawm qhov chaw, tapering mus rau 620 HV0.1 ntawm 0.2 mm qhov tob, muab ib tug hnav-cov ntaub ntawv resistant yam tsis muaj txia core toughness

Lub 00U4022 yog structurally validated rau inline thiab radial -piston twj configurations siv ib tug flange - mounted roller tappet interface. Nws cov ntawv thov tseem ceeb npog:

Hnyav -lub luag haujlwm ntawm - tsheb loj(Euro VI Kauj Ruam E ua raws) kev ua haujlwm nrog kev txhaj tshuaj siab txog 2,200 bar

Marine auxiliary cavqhov twg txhawb nqa 80% load yam xav tau kev tiv thaiv zoo tshaj -scuffing zog

Kev tsim hluav taws xob ruaj khovcov txheej txheem raug pib ntau zaus- nres kev caij tsheb kauj vab, uas ntsuas lub plunger tsis kam rau thermal shock

Tsis zoo li cov qauv tsim ib txwm muaj qhov tseem ceeb tshaj plaws, qhov plunger no suav nrog avariable helix txiav- tawm ntugntawm nws lub teb chaws sab saud. Qhov geometry no tso cai rau lub twj tso kua mis tswj lub tes tsho los kho qhov ntev ntawm cov hlab ntsha tawg, ua kom lub tsheb ciav hlau siab hloov pauv ntawm 250 txog 2,200 bar yam tsis hloov camshaft profiles-ib qho tshwj xeeb nrhiav tom qab hauv retrofitted electronic Governor systems.

Cov ntaub ntawv Rhiav qhia tau hais tias 73% ntawm plunger- cuam tshuam txog qhov tsis zoo tshwm sim tsis yog los ntawm kev hnav tab sis los ntawm kev sib txuas tsis zoo los yog cov roj paug nkag mus rau qhov chaw nqus dej. Rau 00U4022, cov kws tshaj lij yuav tsum tau lees paub qhovplunger-rau- chim radial clearancesiv txoj kev ntsuas pneumatic -targeting 3.0–4.5 µm. Deviations qis dua 2.5 µm kev pheej hmoo qaug dab peg vim thermal expansion, thaum clearances tshaj 5.5 µm poob volumetric efficiency qis dua 92%, ua rau tsis tu ncua "rail siab plausibility" codes.

Qhov tseem ceeb installation raws tu qauv:

Soak lub plunger hauv cov roj kuaj huv (ISO 4113) rau 15 feeb ua ntej kev ntxig rau kom qhib qhov porosity lubrication

Torque lub twj tso kua mis lub taub hau tuav bolts rau 55 Nm nyob rau hauv lub hnub qub qauv - tsis sib xws clamping distorts lub chim bore ellipticity txog li 1.2 µm

Q1: Vim li cas kuv tus tshiab 00U4022 qhia qis kev tsheb nqaj hlau siab ntawm qhov siab tsis ua haujlwm piv rau qhov qub, txawm tias muaj cov shims zoo ib yam?
Qhov no feem ntau qhia txog qhov tsis sib haum xeeb hauv qhovhelical txiav - tawm lub sijhawm. The 00U4022 is calibrated for a specific start-of-delivery angle. If your pump housing has a worn roller tappet (increased clearance by >0.1 hli), qhov ua tau zoo stroke shortens. Ntsuas tappet nqa; hloov yog tsim nyog-tsis txhob hloov shim thickness arbitrarily, raws li qhov no hloov lub compression piv, tsis yog lub sij hawm.

Q2: Lub plunger no puas tuaj yeem tuav 100% HVO (Hydrotreated Vegetable Oil) yam tsis tau hnav?
Yog, tab sis nrog ib tug caveat. HVO muaj lubricity qis dua EN 590 diesel. Cov manganese-phosphate txheej muab ib qho qhuav- zaj duab xis barrier, tseem peb xav kom ntxiv 2% biodiesel sib tov (los yog siv lubrication additive) los tswj cov ciam teb zaj duab xis ntawm lub plunger thiab chim, ncua kev pab cuam lub neej ntawm 12,000 mus rau 18,000 teev ua hauj lwm.

Q3: Kuv yuav ua li cas thiaj paub qhov tseeb 00U4022 metallurgy los ntawm cov ntawv luam tawm cuav uas siv lub ntsuas qhov tawv tawv?
Cov khoom siv tiag tiag qhia tau hais tias HRC 60-62 zoo ib yam thoob plaws tag nrho lub cev cylindrical. Cov ntaub ntawv cuav feem ntau yog- tawv tawv nkaus xwb (HRC 58 ntawm qhov chaw, poob rau HRC 48 ntawm 0.5 mm qhov tob). Ua peb qhov sib txawv ntawm 120℃sib nrug ntawm thaj av nruab nrab-yog tias qhov sib txawv tshaj ± 2 HRC, tsis lees txais cov khoom.

Q4: Puas yog kev lag luam puas tuaj yeem rov- sib tsoo thiab loj dua lub plunger no, lossis nws puas yuav tsum tau hloov nrog nws lub thoob sib tw?
Re- tsis pom zoo kom sib tsoo. 00U4022's txheej thickness (8-}12 µm) yog engineered rau nws txoj kab uas hla. Oversizing hloov qhov chaw nres nkoj lub sij hawm thiab nce lub ntim tuag, txo compression piv. Ib txwm hloov raws li cov txheej txheem sib txuam nrog lub thoob sib thooj kom tswj tau lub Hoobkas-calibrated xau tus nqi.

Q5: Dab tsi yog qhov siab tshaj plaws pub roj kub rau kev ua haujlwm tas mus li yam tsis muaj kev pheej hmoo plunger scuffing?
Lub thermal txwv yog 95℃ntawm lub twj tso kua mis inlet. Saum toj no, roj viscosity poob qis dua 1.4 cSt, txo hydrodynamic film thickness. 00U4022's los tiv thaiv- hnav cov khoom ntxiv hauv cov txheej txheem tuaj yeem tiv taus mus txog 105℃rau lub sijhawm luv (＜2 teev), tab sis kev ua haujlwm ruaj khov ntawm qhov kub siab yuav ua rau kom cov radial clearance vim qhov sib txawv ntawm cov hlau plunger thiab lub twj tso kua mis vaj tse (aluminium).