00U670 / U670 Roj Txhaj Plunger - Ntau -Parameter Tswj Kev Ruaj Ntseg Thiab Lub Siab Ua kom muaj kev sib raug zoo thoob plaws qhov hloov pauv ceev / Load Conditions

Nyob rau hauv niaj hnub no - tsheb ciav hlau systems, lub cav tsis tshua muaj kev khiav hauj lwm nyob rau hauv ib tug ruaj khov lub xeev- nws hloov mus tas li ntawm idle, acceleration, deceleration, thiab tag nrho load, txhua tus xav tau ib tug sib txawv roj xa profile. Cov00U670 / U670los ntawm Weifu yog engineered raumulti- parameter tswj stability-lub peev xwm los tswj lub sij hawm txhaj tshuaj zoo ib yam thiab kom muaj nuj nqis thoob plaws ntau qhov ceev (600–2,800 rpm) thiab thauj khoom (5–100%). Thaum feem ntau cov plungers tau ua kom zoo rau qhov chaw ua haujlwm tshwj xeeb, 00U670 nta adual- tus nqi tswj ntuguas tau hloov kho qhov kev ntsuas txoj kab nqes raws li lub plunger tshaj tawm, kom ntseeg tau tias SCV tam sim no - rau - kev sib raug zoo ntawm kev xa khoom tseem nyob (R² > 0.998) hla tag nrho cov kab nrawm. Qhov no yog ua tiav los ntawm asib txawv -pitch helix- lub kaum sab xis ntawm cov hlau lead hloov ntawm 28℃nyob rau sab saum toj (rau qis- nqa, qis- nrawm nrawm) mus rau 34℃hauv qab (rau siab- nqa, siab- nrawm nrawm), tsim kom muajceev-compensated metering yam ntxwvuas txo tus me nyuam variation tshwm sim los ntawm camshaft ceev fluctuations. Lub plunger lub nominal txoj kab uas hla ntawm11.0mm 3thiab stroke ntawm16.0mm 3muab nws tso rau loj -tso zis cav (12–16 litres) siv nyob rau hauvntev - tsheb thauj khoom, locomotive zog units, thiabmarine propulsion systems, qhov twg lub cav siv lub sij hawm tseem ceeb ntawm cov khoom sib txawv vim hloov struts lossis dej hiav txwv.

Lub 00U670 / U670 plunger qhov sib txawv -pitch helix yog av siv ib qho5-axis CNC txheej txheemuas tsim kom muaj kev hloov pauv ntawm ob lub kaum sab xis. Ntawm qhov ceev ceev (600-1,200 rpm), lub kaum sab xis muab cov kev daws teeb meem zoo dua (0.85 mm³ ib 1 mA SCV tam sim no), ua kom ruaj khov thiab ua haujlwm zoo. Thaum muaj kev kub ceev (1,800–2,800 rpm), lub kaum sab xis nce qhov metering txoj kab nqes mus rau 1.10 mm³ ib 1 mA, them nyiaj rau lub sij hawm txo qis thiab tswj tib lub roj xa tawm ib zaug. Qhov no tsim yields aKev hloov pauv ntawm ± 0.9%hla tag nrho qhov nrawm ntawm 1,600 bar- piv rau ± 2.5% rau ib zaug -helix plunger. Nyob rau hauv cov kev ntsuam xyuas ib ntus (hloov accelerator sai hloov los ntawm idle mus rau tag nrho load nyob rau hauv 2 vib nas this), lub 00U670 txwv lub tsheb ciav hlau siab overshoot mus rau 28 bar, piv rau 65 bar rau txheem plungers, txo lub load ntawm lub siab nyem valve thiab txo cov pa taws thaum lub sij hawm acceleration.

Lub plunger teeb no hloov cov lej OEM00U670, U670, thiab Bosch code 9 445 220 615. Nws yog feem ntau teev rauhnyav -lub luag haujlwm ntawm - tsheb loj(Cummins X15, Volvo D16, Scania DC16),railway traction cav(MTU 4000 series), thiabmarine auxiliary generatorsuas tau nquag load hloov. Lub 00U670 yog sib xws nrogBosch CP3.4thiabDenso HP 5twj tso kua mis platforms, thiab nws loj 11.0 mm txoj kab uas hla muab aswept ntim ntawm 1,520 mm³per stroke-28% siab dua 10.5 hli chav kawm. Lub plungertswj lub tes tsho qhov siabyog 27.0mm, thiab nws nqa aib leeg kub qhia band, qhov txawv ntawm 00U606 (tsis muaj band) thiab 00U638 (dawb band). Lub thoobsab nraud txoj kab uas hlayog 34,0mm aplaub -bolt flangesiv 12 hli studs, sib xws nrog cov twj tso kua mis loj.

Performance validation ua raws li covTS EN ISO 8178 E2 (nrog nkoj)thiabWHTC (World Harmonized Transient Cycle)cov txheej txheem. Ntawm 1,600 bar rail siab, 00U670 xa aSiab tsim tus nqi ntawm 1,450 bar / msthaum lub sijhawm txhaj tshuaj tseem ceeb ntawm 1,500 rpm-ib txwm nyob thoob plaws qhov nrawm. Covntws ripplentawm tag nrho cov load tau ntsuas ntawm 4.8%, piv rau 8.2% rau tus qauv plunger. Lub plungersab hauv tontawm 1,600 bar yog 3.5%-tsawg rau 11.0 hli txoj kab uas hla, ua tsaug rau qhov sib tw clearance (3.2 µm) thiab siab -precision bore tiav (Ra 0.020 µm). Covvolumetric efficiencyyog 94.8% ntawm 1,600 bar, poob rau 93.2% ntawm 2,000 bar. CovSCV tam sim no ntau yamnyob rau hauv lub load spectrum yog 400-600 mA, uas yog 15% qis dua li ib txwm rau chav kawm loj no.

Txhim kho lub 00U670 xav tau adynamic calibrationntawm lub twj tso kua mis kuaj lub rooj ntev zaum kom paub tseeb qhov tshaj tawm - them nyiaj ntsuas ntsuas. Teem lub twj tso kua mis ceev mus rau 800, 1,500, thiab 2,200 rpm, thiab ntsuas qhov xa tawm ntim ntawm SCV tam sim no (piv txwv li, 500 mA). Qhov ntim yuav tsum nce 18-20% rau txhua kauj ruam ceev- yog tias qhov nce siab tshaj 25%, qhov sib txawv -pitch helix yuav puas. Ntxig lub plungervertically yam tsis muaj kev sib hloovsiv lub tes tsho qhia, raws li lub complex helix geometry yog rhiab rau ntug kev puas tsuaj. Torque lub twj tso kua mis taub hau bolts rau75 N·mnyob rau hauv ib tug ntoo khaub lig qauv, ua raws li los ntawm90℃angular zawm-siab dua torque rau lub flange loj. Tom qab sib sau ua ke, ua akev ntsuam xyuas kev hloov pauv hloov pauv: ceev ceev txav SCV tam sim no los ntawm 300 mA mus rau 700 mA thiab sau lub sij hawm nce siab; nws yuav tsum tsawg dua 0.4 vib nas this. Yog tias nws siab tshaj 0.6 vib nas this, lub plunger qhov ntsuas txoj kab nqes tuaj yeem ua yuam kev.

Q1: Dab tsi yog qhov txiaj ntsig zoo ntawm 00U670's velocity-compensated metering rau tus neeg tsav tsheb thauj khoom nce qib?
Thaum lub cav ceev poob vim qib, lub plunger tau hloov kho nws txoj kab nqes hav kom them nyiaj, yog li cov roj xa tawm tseem zoo ib yam - tiv thaiv "surge thiab lag" kev xav uas tshwm sim thaum ECU sim them nrog SCV tam sim no ib leeg.

Q2: Lub 00U670 puas tuaj yeem ntsia tau rau hauv lub twj tso kua mis tsim los rau 10.5 hli plunger (piv txwv li, 00U632) los ntawm kev hloov lub thoob?
Tsis yog- lub twj tso kua mis vaj tse, camshaft, thiab tappet geometry yog tsim los rau ib qho tshwj xeeb plunger stroke. Lub 11.0 hli plunger muaj ib tug ntev stroke (16.0 mm vs . 15.2 mm) thiab ib tug loj chim sab nraud txoj kab uas hla (34.0 mm vs . 32.0 mm). Retrofitting yuav xav tau machining dav thiab recalibration; peb pom zoo kom siv 00U670 lub taub hau lub taub hau sib dhos.

Q3: Vim li cas 00U670 muaj qhov tshwj xeeb torque siab dua (75 N·m + 90℃) piv rau cov plungers me?
Txoj kab uas hla loj dua thiab cov phab ntsa tuab (3.8 hli) yuav tsum muaj zog clamping ntau dua los tiv thaiv kev cuam tshuam hauv kev kub siab. Lub 90℃angular tightening xyuas kom cov bolts tau ncab mus rau qhov tseeb preload rau qhov loj flange.

Q4: 00U670 ua haujlwm li cas nrog qis - viscosity fuels xws li HVO lossis GTL?
Cov txheej txheej multilayer thiab kev sib txuam clearance yog tsim los rau ntau yam viscosity (1.2-4.5 cSt). Tsawg- cov roj viscosity txo qis qis me ntsis, yog li SCV yuav xav tau 2-3% kev hloov kho, tab sis qhov nrawm- them nyiaj ntsuas ntsuas tseem siv tau. Peb pom zoo kom lub rooj zaum calibration tom qab hloov roj hom.

Q5: Dab tsi yog qhov kev pab cuam lub neej ntawm 00U670 nyob rau hauv daim ntawv thov locomotive nrog nquag hloov pauv?
Nyob rau hauv siab -tsheb ciav hlau traction, lub plunger feem ntau ua tiav 10,000-12,000 teev ua ntej qhov sib txawv -pitch helix qhia hnav. Cov txheej txheej txheej txheej yog qhov tseem ceeb- cov ntaub ntawv teb los ntawm European rail tswv qhia tias 00U670-nruab twj tso kua mis xav tau 30% tsawg dua cov kev pabcuam uas tsis tau teem sijhawm piv rau cov qauv plungers.

Q6: Kuv puas tuaj yeem ua qhov ntsuas dynamic calibration kuv tus kheej, lossis kuv puas xav tau lub rooj zaum tshwj xeeb?
Peb qhov -kev ntsuas ceev yuav tsum muaj qhov sib txawv- ntsuas lub ntsuas ntsuas nrawm nrog lub ntsuas ntsuas ntsuas -ib qho khoom siv hauv cov khw muag khoom siv hluav taws xob. Yog tias koj tsis muaj ib qho, koj tuaj yeem kwv yees los ntawm kev kaw lub cav roj noj ntawm ob txoj kev sib txawv (tib lub iav, tib lub thauj khoom), tab sis qhov no tsis tshua meej.