Roj Txhaum Pump Plunger 00U161/U161 - Dynamic Oil Film Control Thiab Micro-Motion Wear Management Rau Cov Twj Ua Haujlwm Siab Inline

Hauv cov twj siv hluav taws xob siab siab, lub plunger thiab lub thoob tsis ua haujlwm raws li qhov chaw qhuav zawv zawg; lawv cia siab rau ib daim nyias nyias, cov yeeb yaj kiab roj uas sib cais ob qho tib si thaum lub sij hawm compression stroke. Cov yeeb yaj kiab hydrodynamic no, txawm li cas los xij, yuav raug txiav thiab nyem qhov sib txawv nrog lub plunger ceev thiab thauj khoom. Lub 00U161/U161 Roj Txhaum Pump Plunger, tsim los ntawm Weifu, yog engineered nrog ib tug nto micro-texture uas txhawb kev tsim thiab tuav cov roj ruaj khov zaj duab xis nyob rau hauv tag nrho cov kev khiav hauj lwm tej yam kev mob. Tsis zoo li cov plungers smooth-tiav uas tuaj yeem ntsib cov yeeb yaj kiab tawg ntawm qhov nrawm nrawm- ua rau kev sib cuag ntawm cov hlau-rau-hlau thiab micro-welding-the 00U161/U161 nta lub tiaj tiaj tiaj tiaj tiaj nrog qhov tsis zoo skewness (Rsk=-0.8), uas ua rau cov roj nplua nyeem txawm tias lub sijhawm ua haujlwm ntawm microscopic. low-speed, high-load moments thaum zaj duab xis yog qhov yooj yim tshaj plaws. Qhov no nto engineering, ua ke nrog kev ua kom zoo dua plunger-chim tshem tawm (3.0-3.4 µm), txo cov coefficient ntawm kev sib txhuam los ntawm kwv yees li 18% piv rau cov pa polished plungers, txo qhov kev pheej hmoo ntawm scuffing thiab nplaum hnav. Hauv kev sim teb, 00U161/U161 tau pom qhov nruab nrab ntawm kev pabcuam lub neej ntawm 9,500 teev hauv kev siv tsheb loj -kev txhim kho 12% dhau los ntawm cov plungers yav dhau los- feem ntau yog vim qhov txo qis hnav thaum lub sijhawm ua haujlwm ib ntus.

Lub plunger 00U161 / U161 muaj lub npe ntawm txoj kab uas hla ntawm 8.5 hli nrog stroke ntawm 7.8 hli, yielding ib tug swept ntim ntawm 442 mm³. Tus tswj helix yog hauv av mus rau lub kaum ntse ntse ntawm 20℃± 0.15 degree, nrog rau kev txiav tawm ntug kab hluav taws xob khaws cia hauv qab 0.018 hli kom ntseeg tau tias muaj qhov tshwm sim tawg. Lub plunger nto tiav yog Ra 0.04 µm nrog thaj tsam ntawm qhov sib piv (Rmr) ntawm 85% ntawm 0.5 µm txiav-hauv, qhia qhov zoo-plateaued nto uas txhawb nqa ob leeg sealing thiab lubrication. Lub chim bore yog lapped rau Ra 0.03 µm, thiab matched clearance yog tuav rau 3.0–3.4 µm ntawm 20℃- ib tug nruj kam rau ua rau sab hauv tolerance ntawm tsawg tshaj li los yog sib npaug rau 0.9 cm³ / min ntawm 100 bar xeem siab. Static flow ntawm tag nrho cov khib nyiab thiab 1,200 rpm yog calibrated rau 390-415 mm³ ib stroke, nrog ib tug unit-rau-unit variation ntawm tsawg dua los yog sib npaug rau ± 1.5%. Cov khoom siv plunger yog nitrided steel (core hardness 58-62 HRC, nto hardness 1,000 HV) nrog cov txheej txheej tuab ntawm 15-20 µm, muab ob qho tib si hnav thiab tiv thaiv corrosion. Lub rooj sib txoos muaj xws li cov txiv ntoo tuav (torque 48-52 Nm) thiab lub shim teem rau lub caij nplooj ntoos hlav pre-load hloov.

00U161/U161 yog tsim rau inline twj (A-type thiab P-type) siv nyob rau hauv 4- thiab 6-lub tog raj kheej engine los ntawm 4.0 mus rau 8.0 liters hloov, npog daim ntaub ntawv nyob rau hauv nruab nrab-lub luag hauj lwm tsheb, tsheb npav hauv nroog, tsheb laij teb ua liaj ua teb, thiab me me gensets (txog 250 kW). Nws yog sib xws nrog cov twj tso kua mis uas siv lub 14 hli chim bore thiab M14 xa valve threads, thiab yog ib qho kev hloov ncaj qha rau thawj Weifu twj tso kua mis. Lub plunger no kuj tsim nyog rau qee yam Bosch thiab Stanadyne inline twj uas sib koom tib txoj kab uas hla thiab helix orientation, ua rau nws muaj ntau yam tom qab muag khoom. Weifu muab cov plunger no rau OEMs suav nrog Yuchai, Weichai, thiab FAW, thiab nws tau dav dav hauv kev lag luam tom qab kev pabcuam rau South America, Southeast Asia, thiab Africa. Lub 00U161 / U161 kuj tseem siv rau hauv kev rov ua dua qub Euro II xyaw nrog cov twj tso kua mis hloov kho kom txhim kho kev lag luam roj thiab pa taws.

Nyob rau theem microscopic, lub plunger ua rau me me lateral txav (micro-motion) thaum lub sij hawm txhua qhov stroke vim yog hydraulic sab loads induced los ntawm inclined tswj helix. Cov kev txav no ua rau muaj kev sib txhuam kub uas, yog tias tsis tswj hwm, tuaj yeem ua rau muaj kev nthuav dav hauv cheeb tsam thiab nce kev tshem tawm lossis, tsis zoo, qaug dab peg. Lub 00U161 / U161 lub toj siab-honed nto, nrog nws tswj lub hav ceev thiab qhov tob, ua raws li lub dab dej kub los ntawm ntxiab roj uas absorbs thiab dissipates tshav kub ntawm qhov chaw sib cuag. Computational fluid dynamics (CFD) simulations qhia tau hais tias qhov zoo nkauj ntawm qhov chaw txo qhov kub ntawm qhov sib chwv ntawm lub plunger-barrel interface los ntawm 8-10℃piv rau ib tug du nto nyob rau hauv tib yam. Qhov kev txo qis kub no yog txuas ncaj qha mus rau tus nqi qis dua: txhua 5℃txo qis hauv qhov kub ntawm qhov sib cuam tshuam kwv yees li ob npaug rau lub sijhawm kom ncav cuag qhov kev tshem tawm qhov nce ntxiv (Arrhenius kev sib raug zoo). Hauv cov ntsiab lus siv tau, qhov no txhais tau tias 00U161 / U161 tswj nws qhov kev tshem tawm thawj zaug ntxiv rau 2,000 teev ntawm kev ua haujlwm hauv cov ntawv thov siab, xws li cov gensets khiav ntawm 80% tsis tu ncua.

Kev kuaj mob ib txwm muaj rau cov plungers cia siab rau lub sijhawm poob lossis kev ntsuas qhov ntws tawm, tab sis 00U161 / U161 tso cai rau kev soj ntsuam ntau dua: kev sib txhuam-lub zog kos npe, ntsuas los ntawm kev txuas lub xov tooj ntawm tes mus rau lub twj tso kua mis tswj khib thiab sau cov quab yuam uas yuav tsum tau txav lub khib los ntawm nws tag nrho mus ncig. Ib qho kev noj qab haus huv plunger-chim ua ib tug du, linear nce nyob rau hauv kev sib txhuam quab yuam los ntawm idle mus rau tag nrho rack, nrog ib tug tag nrho variation ntawm tsawg tshaj li 2.5 N. Raws li cov nto zoo nkauj hnav thiab clearance nce, cov kev sib txhuam kos npe tsim "spikes" los yog non-linearities vim stick-slip tsab ntawv tsa suab, nrog ib tug variation ntawm lub zog ntawm 4.0. Kev pabcuam niaj hnub thiab muab cov lus qhia ncaj qha ntawm qhov chaw ntawm lub plunger- tej yam uas xau lossis poob sijhawm ib leeg tsis tuaj yeem nthuav tawm. Thaum qhov kev sib txhuam sib txawv ntau tshaj 4.5 N, lub plunger yuav tsum tau hloov, vim tias qhov saum npoo tau poob nws lub peev xwm los tswj cov roj av ruaj khov.

❓ Lub plateau-honed nto txawv li cas ntawm polished nto nyob rau hauv cov nqe lus ntawm pib khiav?
Plateau-honed nto muab cov roj khaws cia tam sim ntawd, txo qhov hnav ntawm li 40% piv rau polished nto. Qhov no txhais tau hais tias lub plunger ncav cuag nws qhov ruaj khov tshem tawm sai dua, feem ntau hauv 100 teev ntawm kev ua haujlwm, thaum polished plungers yuav siv sijhawm 300 teev.

❓ Kuv puas tuaj yeem siv 00U161 / U161 hauv lub twj tso kua mis uas thaum chiv thawj muaj lub plunger nrog lub taub loj dua (xws li 9.0 hli)?
Tsis yog, txoj kab uas hla yuav tsum phim lub thoob bore; siv lub plunger me me yuav ua rau muaj kev tshem tawm ntau dhau thiab tawm, txo cov twj tso kua mis efficiency. Ib txwm siv txoj kab uas hla ntawm koj lub twj tso kua mis.

❓ Dab tsi yog qhov cuam tshuam ntawm kev siv roj nrog lub lubrication tsis zoo ntawm cov roj zaj duab xis stability?
Lubricity tsis zoo (HFRR> 520 µm) txo cov zaj duab xis shear zog, ua rau muaj kev pheej hmoo ntawm kev sib cuag hlau-rau-hlau. Hauv cov xwm txheej zoo li no, 00U161 / U161 lub ntsej muag zoo nkauj tseem muab qee qhov kev tiv thaiv, tab sis lub neej kev pabcuam yuav raug txo mus txog 30%. Kev siv lub lubrication additive yog pom zoo.

❓ Ntev npaum li cas yuav tsum tau ntsuas qhov kev sib txhuam-kev kos npe rau daim ntawv thov genset?
Rau kev tsim hluav taws xob tas mus li, ntsuas txhua 2,000 teev ua haujlwm. Sau lub hauv paus quab yuam kev hloov pauv thaum tshiab, thiab sib piv txhua qhov ntsuas; ib tug 30% nce saum lub hauv paus warrants ntxiv kev soj ntsuam thiab tej zaum yuav hloov.

❓ Puas yog nws tsim nyog los hloov lub chim thaum siv lub plunger 00U161 / U161 tshiab?
Yog, vim hais tias lub thoob bore yuav hnav tsis sib xws, thiab qhov sib tw clearance yog qhov tseem ceeb. Weifu muab lub plunger thiab chim raws li qhov sib txuam; siv lub thoob siv yuav tsis ua tiav qhov kev tshem tawm thiab tuaj yeem ua rau hnav ntxov ntxov.

❓ Dab tsi yog qhov chaw cia khoom pom zoo rau cov plungers seem?
Khaws rau hauv qhov chaw qhuav, qhov kub thiab txias (15-25 degree) nrog cov av noo qis dua 60%. Lub plunger yuav tsum tau khaws cia rau hauv nws cov khoom qub antirust; Yog tias qhib, npog nws nrog ib txheej nyias ntawm cov roj diesel huv thiab muab khi rau hauv lub hnab yas kom tiv thaiv oxidation.