Bosch 0445020112 Pub Pump - Harmonic Suppression & Pulsation Resonance Avoidance Rau CP3 Common-Rail Stability

 

Txhua lub twj tso kua mis vane-type feed generates lub siab ripple ntawm nws vane-pass zaus - xya zaus lub cav ceev rau 7-vane rotor. Nyob rau hauv tej yam kev mob, qhov no ripple yog ib tug me perturbation. Txawm li cas los xij, thaum cov zaus sib txuam nrog lub ntuj resonance ntawm cov roj kab ntev lossis CP3 metering valve lub hydraulic capacitance, qhov amplitude tuaj yeem ua kom nrov nrov los ntawm qhov zoo ntawm 3-5, tsimsawv nthwv dejuas ua rau hnyav rail siab oscillations thiab hnav ntxov ntxov ntawm high-pressure Cheebtsam. Bosch 0445020112 yog lub twj tso kua mis uas tsim los rau CP3 txoj kev tsheb ciav hlau nrog cov qauv tsim tshwj xeeb:harmonic suppression los ntawm qhov hluav taws xob-gallery tuning. Nws cov qhov hluav taws xob sab hauv suav nrog cov kauj ruam nthuav dav chamber-reactive silencer rau cov kua siab nthwv dej- uas xaiv attenuates thib ob thiab thib peb harmonics ntawm lub vane-pass zaus. Qhov no ua kom ntseeg tau tias txawm tias qhov tseem ceeb zaus mus txog qhov chaw resonance, cov ntsiab lus sib haum xeeb uas feem ntau ua rau muaj kev tsis sib haum xeeb yog raug txwv los ntawm ntau dua 60%. Thaum lub twj tso kua mis no lub cev geometry degrades-los ntawm bore erosion los yog vane hnav uas hloov lub pulsation waveform- thawj cov tsos mob yog ib tugresonant humming suab nrovlos ntawm cov roj kab ntawm cov cav ceev tshwj xeeb, nrog rau qhov tsis zoo ntawm kev tsheb ciav hlau siab kho uas feem ntau yuam kev rau lub ntsuas qhov tsis raug lossis lub ntsuas ntsuas lub valve.

 

Lub 0445020112 feem ntau teev rauEuro 5 thiab Euro 6 neeg nrog caij tsheb thiab SUVsnruab nrog Bosch CP3.2/CP3.3 twj, tshwj xeeb tshaj yog nyob rau hauv ntev-wheelbase qauv nrog txuas roj kab ntev ntawm lub tank thiab cav- qhov twg cov yeeb nkab acoustic resonance ntog nyob rau hauv lub engine kev khiav hauj lwm ntau yam. Cov ntawv thov OEM tseem ceeb suav nrog:

Audi- 3.0 TSI V6 A6 A7 A8 Q7

Porsche- Cayenne Diesel 3.0 V6, Macan S Diesel 1

Volkswagen- Touareg 3.0 TSI, Phaeton 3.0 TDI

BMW- 7-series (730d, 740d) nrog N57 cav thiab txuas ntxiv wheelbase

Mercedes-Benz- S-Class 350 BlueTEC (W221 / W222) nrog OM642

Land Rover- Range Rover (ntev-wheelbase) nrog 3.0 SDV6

Lub twj tso kua mis mounts ntawm atriangular peb-bolt flange(M8 bolts, 55 hli suab) nrog 14-hlau splined coupling, ncej protrusion 24 hli. Nws qhov hluav taws xob qhov chaw nres nkoj suav nrog ib qho chaw sab hauvstepped-chamber expansion seem-a 6 hli txoj kab uas hla uas nthuav mus rau 10 hli rau 8 hli, ces rov qab mus rau 6 hli- pom tsuas yog thaum lub banjo bolt raug tshem tawm. Qhov geometry no yog tus yuam sij rau nws qhov kev sib haum xeeb kev muaj peev xwm.

 

Ib qho tsis ua hauj lwm sib haum xeeb nthuav tawm nws tus kheej li ibpronounced hum los yog dronentawm lub cav ceev. Cov txheej txheem kev cob qhia siv lub siab transducer thiab tus ntsuas spectrum:

Khiav lub cav ntawm idle mus rau 3,500 rpm hauv 100 rpm increments (los yog siv cov cuab yeej kuaj mob los tuav ceev).

Sau cov teeb liab siab thiab teeb tsa lub amplitude ntawm vane-pass zaus (7th order) vs. RPM.

Ib qho kev noj qab haus huv 0445020112 qhia tau hais tias tus du, kuj tiaj tus amplitude thoob plaws RPM ntau yam.

Thaum lub chamber sab hauv yog hnav, 7th-order amplitude spikes sharply ntawm tej RPM-cov ntsiab lus resonance. Ib qho loj ntawm ntau tshaj 0.25 bar (piv rau hauv paus) qhia tias kev sib haum xeeb tau degraded.

Qhov kev ntsuam xyuas no nthuav tawm ntau dua li cov kev ntsuas siab yooj yim thiab ncaj qha rau lub hom phiaj ntawm lub twj tso kua mis qhov kev ua tau zoo tshwj xeeb.

 

Thaum lub resonance amplifies lub twj tso kua mis ripple, CP3 inlet siab teeb liab muaj ib tug muaj zog lub sij hawm nyob rau hauv lub zaus ntawm lub vane. PID maub los txhais qhov no raws li qhov sib txawv ntawm lub siab tiag tiag thiab sim kho nws, txhaj tshuaj tiv thaiv kev sib tw uas tuaj yeem ua rau cov tsheb ciav hlau tsis zoo. Qhov no tsim ibntaus zausuas cov neeg tsav tsheb pom tau tias yog kev nce siab lossis tsis kam lees. Hloov ib qho hnav 0445020112 rov qab ua kom muaj kev sib haum xeeb, tshem tawm cov tswv yim cuav thiab tso cai rau PID rov qab mus rau nws txoj haujlwm zoo, ruaj khov.

 

Q1: Kuv Audi A8 3.0 TDI muaj lub suab nrov drone los ntawm cov roj system ntawm raws nraim 2,200 rpm- yog 0445020112 tsis ua haujlwm?
Yog-uas yog classic resonance zaus rau lub platform no. Ua qhov ntsuas nrawm nrawm; Yog hais tias qhov 7th-order amplitude peaks sharply ntawm 2,200 rpm, lub harmonic suppression tau degraded. Lub twj tso kua mis tshiab yuav tshem tawm cov drone thiab rov ua kom lub siab zoo.

Q2: Kuv puas tuaj yeem siv 0445020112 ntawm lub tsheb uas thaum xub thawj muaj 0440020110?
Lub flange thiab coupling yog zoo ib yam, tab sis lub qhov hluav taws xob qhov hluav taws xob cov kauj ruam chamber yog qhov tshwj xeeb rau 0112. Haum rau 0112 ntawm lub tsheb calibrated rau 0110 yuav hloov lub resonance taw tes sab nraum qhov kev khiav hauj lwm ntau yam - uas yog pab tau -tab sis nws kuj yuav hloov lub siab-drop yam ntxwv. Peb pom zoo kom sib piv tus naj npawb uas tau teev tseg rau koj VIN los xyuas kom meej qhov ua tau zoo.

Q3: Kuv tuaj yeem qhia tau li cas yog tias lub kauj chamber raug thaiv los ntawm cov khib nyiab?
Tshem lub banjo bolt thiab ci lub teeb rau hauv qhov chaw nres nkoj qhov hluav taws xob- koj yuav tsum pom cov kauj ruam kom meej. Yog tias koj saib cov pa roj carbon deposits los yog khib nyiab, ntxuav lub gallery nrog ib tug pom zoo ntxuav. Yog hais tias cov kauj ruam yog eroded ( ntxhib los yog tsis sib npaug npoo), lub twj tso kua mis yuav tsum tau hloov.

Q4: Cov khoom siv kho puas muaj xws li hloov cov kauj ruam ntxiv?
Tsis yog- cov khoom siv kho tsuas muaj cov ntsaws ruaj ruaj thiab lub valve nyem. Lub kauj chamber yog ib qho tseem ceeb rau lub tsev thiab tsis tuaj yeem hloov tau nyias. Yog hais tias kev sib haum xeeb raug poob, tsuas yog lub twj tso kua mis tshiab rov qab los.

Q5: Lub sijhawm ua haujlwm li cas rau lub twj tso kua mis no nyob rau hauv ib txwm tsav tsheb?
Nrog EN590 roj thiab kev hloov lim tsis tu ncua, cia siab tias120,000 - 150,000 km. Txawm li cas los xij, yog tias koj nquag ua haujlwm hauv qhov resonance RPM ntau yam (piv txwv li, txoj kev loj caij nkoj ntawm 2,200 rpm), lub twj tso kua mis yuav muaj kev ntxhov siab ntau dua thiab kev vibrational- xav txog kev hloov ua ntej, nyob ib ncig ntawm 100,000 km.

Q6: Tom qab txhim kho lub twj tso kua mis tshiab, kuv puas yuav tsum tau ua kom lub zog sib txawv kom tsis txhob muaj cua ntxiab hauv cov kauj ruam?
Yog lawm-chamber kauj ruam tuaj yeem ntes cua hnab ris. Siv phau ntawv primer thawb roj maj mam los ntawm lub kaw lus tsawg kawg yog 1 feeb, tig lub cav manually ob peb lem kom tso pa tawm. Tom qab ntawd khiav lub tshuab nqa nqa rau 30 vib nas this ua ntej pib. Qhov no ua kom lub expansion chamber yog tag nrho wetted thiab ua haujlwm kom raug los ntawm thawj zaug pib.

 

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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