R-5228780 Unit Injector – High-Efficiency Solenoid Coil Assembly With Controlled Parasitic Capacitance Rau 1.9 TDI PD

Hauv Pumpe-Düse injectors, lub solenoid coil feem ntau raug kho raws li ib qho yooj yim resistor-inductor (RL) circuit-tab sis qhov tseeb, nws kuj muaj cov kab mob parasitic ntawm cov windings thiab nruab nrab ntawm winding thiab injector lub cev. Qhov no capacitance, feem ntau 100-200 picofarads, tsim ib txoj hauv kev me me tam sim no uas hla cov hluav taws xob sib nqus, txo cov tam sim no muaj txiaj ntsig los tsim lub zog qhib. Raws li cov txheej txheem rwb thaiv tsev muaj hnub nyoog thiab qhov sib txawv ntawm qhov sib txawv vim qhov thermal expansion, cov kab mob parasitic capacitance nce, ua rau maj mam txo qis hauv armature qhov qhib nrawm thiab nce qhov qhib ncua mus txog 0.03 ms tshaj 100,000 km. R-5228780 unit injector hais txog qhov degradation no los ntawm atswj parasitic capacitance tsimuas txo cov inter-winding capacitance los ntawm qhov tseeb- qhov txhab coil geometry thiab qis -dielectric- cov khoom siv rwb thaiv tsev tsis tu ncua. Qhov no txo ​​cov capacitive to tam sim no thiab tswj cov cuab yeej zoo tam sim no nyob rau hauv ± 1% ntawm tus nqi nominal nyob rau hauv lub injector txoj kev pab cuam lub neej, kom ntseeg tau tias zoo ib yam qhib cov lus teb thiab txhaj lub sij hawm. Raws li kev hloov pauv ncaj qha rau 1.9 TDI PD cav (BLS, BXE, BJB, BKC), R-5228780 muab kev ua haujlwm ruaj khov solenoid yam tsis muaj hluav taws xob drift uas degrades injector teb nyob rau hauv ntau tom qab muag thiab hnub nyoog units.

▪ Lub capacitive leakage mechanism
Lub solenoid coil muaj ntau qhov kev hloov ntawm tooj liab hlau, txhua qhov sib cais los ntawm ib txheej nyias ntawm rwb thaiv tsev. Ua ke, cov lem no tsim ib lub capacitor-inter-winding capacitance. Thaum ECU siv lub zog hluav taws xob rau lub kauj, ib feem ntawm qhov tam sim no ntws los ntawm lub peev xwm no es tsis yog los ntawm txoj kev inductive uas tsim cov hlau nplaum. Qhov no capacitive to tam sim no txo ​​qhov tam sim no muaj los tsim cov sib nqus quab yuam, ua kom lub armature qhib ncua. Raws li lub hnub nyoog injector, cov ntaub ntawv rwb thaiv tsev degrades thiab winding spacing hloov vim thermal cycling, ua kom lub capacitance ntau npaum li 20% tshaj 100,000 km- txaus kom ncua qhov qhib los ntawm 0.03 ms.

▪ Kev tswj cov capacitance tsim
R-5228780 siv atswj winding geometryqhov twg lub lem yog precisely spaced siv lub computer - tswj winding txheej txheem, txo qhov variation nyob rau hauv inter-winding capacitance. Lub coil yog qhov txhab ntawm ib lub pob zeb nrog ib qho zoo sib xws, kom ntseeg tau tias qhov sib txawv ntawm qhov sib txawv. Cov khoom siv rwb thaiv tsev yog qhov qis -dielectric polymer (ε=2.2), uas txo cov peev xwm piv rau cov qauv polyurethane rwb thaiv tsev (ε=3.5). Qhov tshwm sim yog tag nrho cov kab mob parasitic capacitance ntawm 120 pF ± 10 pF-ib qho kev ua siab ntev dua li tus qauv 120 pF ± 25 pF.

▪ Drift them nyiaj
Cov tswj winding geometry thiab qis - dielectric rwb thaiv tsev kuj ua rau lub peev xwm ruaj khov tshaj qhov kub thiab txias. Thaum lub capacitance ntawm tus qauv kauj tuaj yeem nce li 5 pF rau 10℃qhov kub thiab txias, R-5228780's capacitance nce tsawg dua 2 pF tshaj qhov qub. Qhov no txhais tau hais tias qhov ua tau zoo tam sim no tseem nyob ruaj khov thoob plaws qhov kev khiav hauj lwm kub, txo qhov kub ntawm qhov qhib ncua kev hloov pauv.

Feem ntau -rail injector solenoids ntsib tib qhov kev sib tw ntawm cov dej xau, tab sis ECU tus tsav tsheb feem ntau tuaj yeem them rov qab rau cov kev hloov pauv me me los ntawm kev saib xyuas tam sim no. R-5228780's mus kom ze yuav txo tau qhov capacitance drift mus rau qhov chaw uas ECU cov nyiaj them tsis tshua xav tau - qhov yooj yim dua thiab muaj zog dua kev daws teeb meem rau PD system, uas muaj ntau qhov kev hloov pauv tsawg dua.

Kev ntsuas ntsuas- Ntsuas cov coil tsis kam hla lub injector pins. Kev noj qab haus huv R-5228780 nyeem 0.85–1.10 Ω ntawm chav tsev kub. Kev nyeem ntawv siab tshaj 1.2 Ω qhia tau hais tias lub coil degraded; qis dua 0.7 Ω qhia tau hais tias lub sijhawm luv luv.

Capacitance chav kawm code- Tag nrho cov injectors nyob rau hauv ib lub cav yuav tsum muaj tib lub capacitance chav kawm code los xyuas kom meej cov lus teb zoo tib yam solenoid. Tus lej tsis sib haum yuav ua rau lub tog raj kheej - mus rau - lub tog raj kheej qhib ncua kev hloov pauv.

Kev huv huv ntawm Connector- Cov pins yuav tsum huv thiab qhuav; ib tug kab mob connector ntxiv tsis kam thiab tuaj yeem npog qhov txiaj ntsig ntawm kev tswj cov capacitance.

Tuav- cia lub zog- Tighten lub injector clamp ntsia liaj qhov rooj rau 35 Nm + 90℃(lub kaum sab xis-tightened). Tsis sib npaug torque tuaj yeem cuam tshuam lub coil bobbin thiab hloov cov inter-winding capacitance.

Remanufactured R-5228780 injectors feem ntau rewind lub solenoid coil siv tus qauv polyurethane- insulated hlau, uas muaj ib tug ntau dua dielectric tas li thiab ib tug dav capacitance kam rau ua. Lub remanufacturer yuav tsis tswj lub winding nro, ua rau muaj inter-winding capacitance uas yuav txawv ntawm ± 25 pF los ntawm tus nqi nominal. Lub injector yuav dhau qhov kev ntsuas ntws, tab sis nws qhov qhib ncua yuav txawv nrog qhov kub thiab txias. Tshiab R-5228780 units tau raug mob nrog qis-dielectric rwb thaiv tsev thiab lub computer-tswj txheej txheem tensioning, lav lub peev xwm kam rau ua.

Q1: Kuv tuaj yeem ntsuas qhov parasitic capacitance ntawm R-5228780 yam tsis muaj cov cuab yeej tshwj xeeb?
Ib qho kev ntsuas capacitance yuav tsum muaj LCR meter, uas tsis yog ib qho cuab yeej kev cob qhia. Txawm li cas los xij, koj tuaj yeem tshawb xyuas qhov qhib ncua sij hawm siv oscilloscope nrog lub clamp tam sim no - qhov qhib qeeb qhia tias muaj peev xwm ntau dhau. Ib qho tshuaj txhaj tshuaj tshiab yuav qhia qhov qhib ncua ntawm 0.42 ms ± 0.01 ms.

Q2: Lub cav muaj qhov cuam tshuam me ntsis ntawm lub teeb throttle- lub peev xwm puas tuaj yeem ua txhaum?
Kev ntxhov siab ntawm lub teeb throttle feem ntau yog tshwm sim los ntawm ib qho kev txhaj tshuaj nrog qhov qhib tsis sib haum. Yog tias ib lub tshuab txhaj tshuaj muaj qhov sib txawv ntawm cov chav kawm capacitance, nws qhov qhib ncua yuav txawv ntawm lwm tus. Tshawb xyuas cov lej capacitance thiab, yog tias tsim nyog, hloov cov tshuaj tsis sib haum.

Q3: Kuv puas tuaj yeem siv R-5228780 ntawm 2.0 TDI PD cav?
Tsis yog- solenoid capacitance yog ntsuas rau 1.9 TDI's ECU tsav tsheb theem; siv nws ntawm 2.0 TDI yuav ua rau lub zog sib nqus tsis raug thiab lub sijhawm yuam kev.

Q4: Dab tsi yog qhov cuam tshuam ntawm qhov kub thiab txias ntawm tus kab mob parasitic capacitance?
R-5228780's capacitance hloov los ntawm tsawg dua 2 pF tshaj li ntawm 20-100℃qhov kub thiab txias, uas cuam tshuam rau qhov tsis txaus ntseeg qhib qhov hloov pauv ncua sijhawm. Qhov no yog ib qho kev txhim kho tseem ceeb tshaj cov txheej txheem coils, uas tuaj yeem hloov tau los ntawm 5 pF ntawm tib qhov ntau.

Q5: Lub injector muaj qhov tsis kam qis dua li qhov teev tseg -qhov capacitance puas tuaj yeem cuam tshuam qhov ntsuas?
Capacitance tsis cuam tshuam rau DC qhov kev ntsuas ntsuas. Kev nyeem ntawv tsis tshua muaj qhia tau hais tias lub kauj luv luv, tsis yog qhov teeb meem capacitance. Hloov lub injector.

Q6: Kuv puas tuaj yeem ntxuav lub solenoid coil nrog hnyav?
Lub kauj yog kaw thiab tsis tas yuav tsum tau ntxuav. Kev sib cuag hnyav tuaj yeem degrade cov khoom siv rwb thaiv tsev thiab ua kom cov kab mob parasitic capacitance. Tsuas yog ntxuav cov hlua txuas hluav taws xob.

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:

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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!

Cim npe nrov: r-5228780 unit injector - siab-efficiency solenoid coil sib dhos nrog cov kab mob parasitic capacitance rau 1.9 tdi pd, Tuam Tshoj r-5228780 unit injector - high-efficiency solenoid coil sib dhos nrog cov kab mob parasitic capacitance rau cov chaw tsim khoom, 1.9