21147446 Common Rail Pump - Nplooj ntawv khoom

 

Thaum lub cav diesel ua haujlwm zoo, koj xav tias txhua qhov kev txhaj tshuaj yog zoo ib yam rau qhov kawg. Hauv kev muaj tiag, cov twj tso kua mis qhia me me tab sis ntsuas qhov sib txawv ntawm plunger strokes, hu uacycle -to-cycle flow scatter. Txhua lub plunger muaj nws tus kheej clearance, lub caij nplooj ntoos hlav preload, thiab hnav qauv, yog li tsis muaj ob strokes xa raws nraim tib yam roj ntim. Cov kev sib txawv me me no feem ntau muab zais los ntawm ECU cov kev kho, tab sis raws li lub hnub nyoog ntawm lub twj tso kua mis thiab tawg zuj zus tuaj, cov kev kho yuav loj dua. Thaum kawg koj pom nws - qhov tsis sib xws me ntsis uas tsis yog qhov tsis zoo, tsis yog qhov vibration, tab sis "roughness" uas ua rau lub cav tsis zoo. Cov21147446yog engineered nrog cov khoom sib txuam thiab tswj kev sib dhos tshem tawm uas ua kom tawg nyob rau hauv ib lub voj voog nruj, yog li ECU tsis tas yuav ua haujlwm dhau. Qhov tshwm sim yog lub cav uas xav tias polished ntau dua, txawm tias lub twj tso kua mis muaj ntau txhiab teev ntawm kev pabcuam.

21147446 yog tshwj xeeb tshaj yog haum rau:

Premium ntev - tsheb thauj khoom- qhov twg tsav tsheb kev nplij siab nyob rau lub sij hawm ntev yog txhim kho los ntawm lub cav uas khiav tsis muaj co co co co.

Cov neeg caij tsheb npav- qhov twg cov neeg caij tsheb pom muaj kev ntxhib los mos hauv kev caij tsheb.

Generator teeb- qhov twg txawm tias cov roj xa tuaj ua rau lub tshuab hluav taws xob tso zis ruaj khov.

Agricultural sprayers- qhov twg lub twj tso kua mis tawg tuaj yeem ua rau lub cav nce me ntsis, cuam tshuam rau hauv av ceev sib xws thaum txau.

Lub twj tso kua mis siv a3-bolt flangenrog 82 hli PCD thiab 25 hli pilot bore. Qhov hluav taws xob haum yog M14 x 1.5 cone lub rooj. Ib txwm paub meej tias qhov ntev no ua ntej xaj - thaum 21147446 sib koom ntau qhov ntev nrog lwm cov twj, qhov kev ua haujlwm tawg yog qhov tshwj xeeb rau qhov sib txuam no - cov khoom siv.

21147446 los ua ib qho kev sib koom ua ke tag nrho. Txhawm rau khaws nws qhov qis - tawg ua haujlwm:

Tsis txhob sib tov qhov chaw- Yog hais tias ib feem ntawm lub twj tso kua mis puas lawm, tsis txhob hloov ib tug neeg plungers los yog springs. Qhov sib txuam yog calibrated ntawm lub Hoobkas; sib tov qhov chaw yuav ua kom tawg.

Kev huv huv yog qhov tseem ceeb- Txawm tias microscopic av tuaj yeem cuam tshuam rau lub plunger stroke, qhia txog kev tawg. Tshem tag nrho cov roj kab nrog huv diesel ua ntej txuas.

Torque tus nqi- Qhov hluav taws xob ceev: 30 Nm; inlet banjo: 22 Nm; mounting bolts: 28 Nm hauv lub hnub qub qauv. Qhov tsis sib xws torque tuaj yeem cuam tshuam lub vaj tsev thiab hloov pauv plunger sib dhos, ua kom tawg.

Lub sijhawm kuaj xyuas- Teem lub twj tso kua mis lub sij hawm raws nraim rau cov chaw tsim khoom specification. Lub sijhawm tsis raug cuam tshuam rau lub cam - mus rau - kev sib cuam tshuam plunger, muaj peev xwm hloov qhov kev tshem tawm tau zoo thiab ua kom tawg.

Priming- Ua ntej- sau lub twj tso kua mis ntawm qhov chaw nres nkoj rov qab. Qhuav cranking tuaj yeem ua rau cov qhab nia uas yuav nthuav dav tam sim ntawd.

21147446 yog sib xws nrog EN 590 diesel thiab B7 / B10 blends. Biodiesel (B20 thiab siab dua) muaj qhov sib txawv ntawm lubricity thiab viscosity, uas tuaj yeem cuam tshuam me ntsis rau plunger txav thiab tawg. Cov khoom sib txuam hauv lub twj tso kua mis no raug xaiv kom txo cov nyhuv no, tab sis yog tias koj khiav B20 tsis tu ncua, peb pom zoo saib xyuas lub tog raj kheej trims ntau zaus. High- cov roj sulfur tuaj yeem tsim cov kua roj vanish uas cuam tshuam rau lub valve sealing thiab ua kom tawg. Khaws cov dej hauv qab 0.2% txhawm rau tiv thaiv corrosion ntawm qhov sib txuam ua tib zoo. Ib qho dej sib cais zoo yog qhov tseem ceeb.

Raws li ib txwm muaj, 21147446 muab7,000–9,000 teevua ntej tawg tshaj ± 2.0%. Thawj qhov kos npe feem ntau tsis yog qhov poob siab tab sis qhov nce ntawm lub tog raj kheej trim qhov tseem ceeb - ECU pib qhia kev kho siab dua, txawm hais tias kev tsheb ciav hlau tseem nyob ruaj khov. Qhov no yog vim hais tias lub twj tso kua mis tseem xa cov siab txaus, tab sis stroke - rau -stroke sib xws yog degrading. Thaum tawg ntau tshaj ± 2.5%, lub cav yuav hnov ​​​​ntxhiab ntawm qhov nrawm nrawm, txawm tias tsis muaj cov lej txhaum cai tam sim no. Nyob rau theem no, kev hloov pauv tau pom zoo - rov tsim kho dua nrog cov uas tsis yog- qhov sib npaug yuav tsis rov qab ua qhov kev ua haujlwm tsis zoo.

Q1: Kuv tsis muaj cov lej txhaum cai, tab sis lub cav xav tias " ntxhib" ntawm qhov nrawm nrawm - puas tuaj yeem tawg ua rau?
Yog, qhov no yog cov tsos mob classic ntawm cov dej ntws ntws tawm. Lub ECU tuaj yeem tswj tau txoj kev tsheb ciav hlau, tab sis qhov me me stroke- mus rau -stroke variations ua rau combustion roughness uas yog hnov ​​li vibration. Lub 21147446 qhov qis tawg yog tsim los tiv thaiv qhov no. Yog tias koj lub cav muaj cov tsos mob no, xyuas lub tog raj kheej trims - yog tias lawv siab tshaj ± 2%, tawg yog qhov ua rau.

Q2: Kuv puas tuaj yeem sim tawg yam tsis tau tshem lub twj tso kua mis?
Kev tsis ncaj, los ntawm kev saib xyuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas (tseem hu ua "khiav du" lossis "cyl balance" qhov tseem ceeb) nrog cov cuab yeej kuaj mob. Yog tias cov txiaj ntsig no tsis tu ncua siab dua ± 2.0% ntawm qhov tsis ua haujlwm thiab nce nrog kev thauj khoom, tawg yog qhov yuav pab tau. Txawm li cas los xij, kev hnav khaub ncaws tuaj yeem ua rau muaj cov tsos mob zoo sib xws - hla- xyuas los ntawm kev sib pauv cov tshuaj txhaj tshuaj ntawm lub tog raj kheej; yog hais tias lub trim ua raws li lub injector, lub injector yog qhov teeb meem; yog tias nws nyob ntawm tib lub tog raj kheej, lub twj tso kua mis tawg yog qhov ua rau.

Q3: Lub twj tso kua mis tuaj nrog daim ntawv lo hais tias "matched set" - vim li cas qhov no tseem ceeb?
Cov plungers, springs, thiab li qub yog ntsuas thiab ua pawg thaum tsim khoom. Kev sib xyaw ntawm cov khoom sib txawv ua rau lub Hoobkas sib npaug - txawm tias cov khoom zoo ib yam, lawv tus kheej clearances thiab preloads txawv, uas ua rau kom tawg. Ib txwm siv lub twj tso kua mis ua kom tiav chav tsev.

Q4: Puas yog tawg nce nrog lub twj tso kua mis ceev?
Yog lawm, vim tias ntawm qhov nrawm dua, cov plungers muaj sijhawm tsawg dua los sau thiab lub valve hloov pauv. 21147446 yog calibrated kom tawg nyob rau hauv ± 1.2% mus txog 3,800 rpm - saum toj no, tawg yuav nce lawm. Qhov no yog vim li cas lub twj tso kua mis raug ntsuas rau 4,200 rpm tab sis cov ntaub ntawv ua tau zoo tau hais ntawm 3,800 rpm.

Q5: Kuv tau hloov tag nrho rau lub injectors, tab sis lub cav tseem vibrates - lub twj tso kua mis puas yog qhov teeb meem ntxiv?
Yog, thiab qhov no yog ib qho scenario. Cov injectors tshiab txhim kho combustion, tab sis yog tias lub twj tso kua mis muaj qhov tawg siab, cov roj xa mus rau txhua qhov kev txhaj tshuaj tseem sib txawv. Lub vibration yog residual scatter. Hloov lub twj tso kua mis nrog qhov qis - tawg chav tsev zoo li 21147446 feem ntau tshem tawm cov kev vibration ntxiv uas cov tshuaj txhaj tsis tuaj yeem kho.

Q6: Puas tuaj yeem tawg ua rau muaj kev puas tsuaj rau lwm yam khoom?
Indirectly, yog. Kev tawg siab ua rau ECU ua qhov kev kho loj, uas tuaj yeem ua rau lub ntsuas ntsuas lub voj voog mus rau qhov hnyav, nce hnav ntawm lub valve thiab lub iav tsav. Tsis tas li ntawd, qhov tsis sib xws combustion ntxiv torsional kev vibration rau lub crankshaft, uas ua rau lub zog tsav pem hauv ntej. Ua kom tawg qis tsis yog tsuas yog kev nplij siab xwb - nws kuj yog hais txog kev tiv thaiv tus so ntawm lub cav.

 

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!

 

 

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