Roj Txhaj Pump Plunger 00U174 / U174 - Lub Sij Hawm Ntev Calibration Stability Thiab Flow-Decay Management Rau Weifu Inline Pump Systems

Hauv cov tshuab hluav taws xob siv hluav taws xob, qhov kev ntsuas thawj zaug ntawm lub plunger tshiab tsuas yog ib nrab ntawm zaj dab neeg - qhov kev ntsuas tseeb ntawm qhov zoo yog qhov zoo npaum li cas uas calibration tau khaws cia ntau dua txhiab lub sijhawm ua haujlwm. Lub 00U174 / U174 Roj Txhaj Pump Plunger, tsim los ntawm Weifu, yog tsim los ntawm kev tsom mus rau lub sij hawm ntev calibration stability, ua tiav los ntawm kev sib xyaw ua ke ntawm kev tswj cov geometry thiab kev kho tshwj xeeb saum npoo uas txo qis qis qis qis hauv cov pa plungers. Every diesel pump experiences a progressive reduction in delivered fuel volume as the plunger and barrel wear-a phenomenon known as flow decay-which forces the governor to increase rack position to compensate, ultimately reducing the available adjustment margin and affecting transient response. 00U174 / U174 yog tsim los txwv qhov kev lwj no kom tsawg dua 2% tshaj nws thawj 5,000 teev ua haujlwm, piv rau 4-5% rau cov qauv plungers. Qhov no yog ua tiav los ntawm qhov optimized chim-chaw nres nkoj geometry uas tsim ib tug self-compensating nyhuv: raws li lub plunger clearance nce me ntsis nrog hnav, lub spill chaw nres nkoj lub sij hawm hloov nyob rau hauv ib txoj kev uas ib feem offsets lub to nce, tswj cov roj xa los ze zog mus rau nws tus nqi qub. Rau cov neeg tsav nkoj, qhov no txhais tau hais tias lub cav qhov kev ua tau zoo thiab kev siv roj nyob ib puag ncig rau lub sijhawm ntev, txo qhov zaus ntawm lub twj tso kua mis recalibration thiab txuas ntxiv lub sijhawm nruab nrab ntawm kev hloov kho loj.

Lub plunger 00U174 / U174 muaj lub npe ntawm txoj kab uas hla ntawm 9.0 hli nrog stroke ntawm 8.5 hli, xa cov ntim ntim ntawm 541 mm³. Tus tswj helix yog hauv av mus rau lub kaum sab xis ntawm 21 degree, nrog rau qhov txiav tawm ntug ntawm qhov qis dua lossis sib npaug li 0.018 hli. Lub plunger nto yog tiav rau Ra 0.04 µm, thiab lub thoob bore yog lapped rau Ra 0.03 µm, ua kom tiav ib tug matched clearance ntawm 3.2–3.8 µm ntawm 20 degree. Static flow ntawm tag nrho cov khib nyiab thiab 1,200 rpm yog calibrated rau 460-485 mm³ ib stroke, nrog ib tug unit-rau-unit variation ntawm tsawg dua los yog sib npaug rau ± 1.6%. Internal to yog tuav ntawm tsawg dua los yog sib npaug rau 1.1 cm³ / min ntawm 100 bar ntsuas siab. Cov khoom siv plunger yog high-chromium steel (sib npaug rau 1.2358) nrog cov tub ntxhais hardness ntawm 58-62 HRC, thiab cov nitrocarburised nto rau 1,000 HV. Lub rooj sib txoos suav nrog cov txiv ntoo tuav (torque 52-56 Nm) thiab lub teeb ci, nrog rau tag nrho qhov siab ntawm 42.5 hli.

Lub 00U174/U174 yog tsim los rau inline twj (A-type, MW, thiab P-type) pab 6- thiab 8-lub tog raj kheej engine nyob rau hauv 10-15 liter chav kawm ntawv, feem ntau pom nyob rau hauv hnyav-lub luag hauj lwm tsheb, nyob twj ywm gensets (300-500 kW), thiab marine propulsion. Nws haum cov twj tso kua mis nrog 14.5 hli chim bore thiab M14 xa xov valve. Weifu muab cov plunger no rau OEMs suav nrog Weichai, Yuchai, thiab FAW, thiab nws tseem muaj los ntawm kev lag luam tom qab kev pabcuam rau South America, Africa, thiab Southeast Asia. Nws kuj tseem tsim nyog rau retrofitting qub Euro II xyaw upgraded nrog hluav taws xob tswj.

Qhov tseem ceeb ntawm kev tsim kho tshiab hauv 00U174 / U174 yog nws lub thoob-chaw nres nkoj tsim, uas suav nrog me ntsis taper hauv cheeb tsam chaw nres nkoj. Raws li lub plunger clearance nce, lub sij hawm spills hloov mus rau ib feem them. Qhov kev cuam tshuam no txo ​​qis qhov ntws tawm ntawm kwv yees li 50% piv rau cov qauv tsim, lub ntsiab lus ntawm lub twj tso kua mis calibration tseem ruaj khov rau ntev.

00U174/U174's calibration stability tuaj yeem saib xyuas los ntawm kev ntsuas qhov ntws tawm (FDR). Siv lub rooj zaum sim, ntsuas cov roj xa tuaj ntawm cov khib nyiab tag nrho tom qab lub sijhawm sov so, sau tus nqi, thiab rov ua dua ntawm 1,000-teev ib ntus. Lub plunger noj qab nyob zoo qhia tau tias FDR ntawm<0.05% per 100 hours. When the FDR exceeds 0.15% per 100 hours, replacement is indicated.

❓ 00U174/U174 txawv ntawm 00U155/U155 li cas?
Lub 00U174/U174 muaj tib txoj kab uas hla thiab mob stroke tab sis nta ib tug self-compensating chim-chaw nres nkoj geometry uas txo cov ntws decay. Nws yog qhov zoo dua rau cov ntawv thov uas qhov kev ntsuas qhov ntev ntev yog qhov tseem ceeb, xws li cov gensets thiab cov tsheb thauj mus ntev.

❓ Dab tsi yog qhov txaus txaus txaus txaus rau qhov plunger no hauv lub tshuab hluav taws xob tseem ceeb?
Rau kev ua haujlwm tas mus li, tus nqi ntws tawm qis dua 0.05% rau 100 teev yog qhov tsim nyog. Yog tias tus nqi siab tshaj 0.12%, npaj rau kev hloov pauv hauv 1,000 teev.

❓ Puas tuaj yeem hloov kho lossis rov kho dua tus kheej?
Cov nyhuv yog tsim rau hauv lub thoob-chaw nres nkoj geometry thiab tsis tuaj yeem hloov kho. Txawm li cas los xij, lub twj tso kua mis tag nrho cov calibration tuaj yeem rov qab los ntawm kev kho tus tswv xeev cov chaw lossis, yog tias qhov kev lwj dhau qhov nyiaj tau los, los ntawm kev hloov lub plunger.

❓ Puas yog 00U174/U174 siv tau nrog cov tswv xeev hluav taws xob?
Yog lawm, lub plunger tus yam ntxwv ntws ruaj khov ua kom yooj yim rau tus tswv xeev tswj hwm daim ntawv qhia, vim tias qhov yuav tsum tau ua rack txoj haujlwm hloov tsawg dua lub sijhawm.

❓ Dab tsi roj pom pom zoo rau kev ua tiav tag nrho lub neej calibration?
Ib qho 10-µm thawj lim thiab 5-µm thib ob lim (qhov ntsuas qhov tseeb) raug pom zoo. Hauv qhov chaw muaj hmoov av siab, siv lub lim 2-µm thib ob.

❓ Kuv yuav khaws cov khoom seem 00U174 / U174 li cas?
Khaws rau hauv qhov chaw qhuav, qhov kub thiab txias (15-25 degree) nrog cov av noo qis dua 60%, hauv nws cov khoom ntim khoom tiv thaiv zoo li qub. Yog tias qhib, npog nrog cov roj diesel huv thiab muab khi rau hauv lub hnab yas.