Hnyav Fuel Common Rail Injector Adjustment Shim Kit - A-Teeb 1.70–1.88 mm Rau Viscosity-Dependent Opening Dynamics

Nyob rau hauv cov roj hnyav roj (HFO) cov kab tsheb ciav hlau, lub sij hawm teb lub sij hawm tsis yog ib qho kev ua haujlwm ntawm hluav taws xob hais kom ua thiab sib nqus quab yuam- nws tau hloov kho hnyav los ntawm cov roj dynamic viscosity. HFO ntawm 50℃muaj viscosity ntawm 180-380 cSt, piv rau 2-4 cSt rau marine diesel roj. Qhov siab viscosity no tsim kom muaj zog hydraulic damping nyob rau hauv lub nozzle sib dhos, ncua rab koob nqa thiab ncua lub sij hawm kaw. Kev hloov kho shim, nyob rau hauv qab lub caij nplooj ntoos hlav tswj valve los yog actuator, ua raws li ib tug preload trim uas compensates rau cov viscous luag quab yuam los ntawm altering lub zoo qhib pib. Heavy Fuel Common Rail Injector Adjustment Shim Kit (A-set: kaum thickness qib ntawm 1.70 mm mus rau 1.88 mm nyob rau hauv 0.02 mm increments, tsib daim ib qib) muab ib tug systematic txoj kev los kho lub sij hawm txhaj tshuaj kom raug yam tsis muaj recalibrating lub ECU, ncaj qha hais txog cov kev sib tw hnyav-kev sib tw.

Tsis zoo li lub teeb-diesel injectors uas feem ntau ua haujlwm nrog shim thicknesses hauv qab 1.50 mm, hnyav-roj injectors yuav tsum thicker shims vim hais tias lub valve caij nplooj ntoos hlav yuav tsum kov yeej ntau viscous tsis kam nqa rab koob. Factory baselines rau HFO injectors (piv txwv li, MAN L32/44, Wärtsilä 46F, thiab tej yam loj -dhau Cummins QSK series) feem ntau poob ntawm 1.72 mm thiab 1.86 mm, nyob ntawm seb cov roj preheating kub. Lub A- teeb npog tag nrho cov kev pabcuam-hnav spectrum: raws li lub rooj zaum valve thiab koob hnav, qhov kev ua haujlwm zoo ua ntej poob qis, yuav tsum muaj lub shim tuab dua los kho qhov qub qhib ncua sijhawm. Hloov pauv, thaum khiav tshwj xeeb lub teeb HFO sib xyaw, lub shim thinner yuav txo tau qhov tsis tsim nyog lub caij nplooj ntoos hlav. Lub kaum kauj ruam muab 0.02 hli granularity, uas sib haum mus rau lub siab-ntev rhiab heev ntawm kwv yees li 0.15 ms ib kauj ruam - txaus los fine-tune qhov pib-of-injection (SOI) nyob rau hauv ± 0.5℃crankshaft kaum sab xis ntawm rated ceev.

Txhua shim yog tsim los ntawm super-austenitic stainless hlau (X2CrNiMoN25-7-4) nrog lub zog tawm los ntawm 900 MPa thiab hardness HRC 40-44, xaiv rau qhov tshwj xeeb pitting tsis kam nyob rau hauv high-sulfur hnyav roj (txog 3.5% cov ntsiab lus sulfur). Qhov chaw yog precision-av kom tiav ntawm Ra 0.15 µm thiab flatness Tsawg dua los yog sib npaug rau 0.0015 hli, kom ntseeg tau tias cov khoom thauj sib faib thoob plaws lub caij nplooj ntoos hlav. Thickness kam rau ua yog ± 0.0015 hli, txheeb xyuas los ntawm huab cua ntsuas thaum tsim khoom. Sab nraud txoj kab uas hla yog 12.0 hli, puab txoj kab uas hla 6.0 hli, sib piv cov qauv caij nplooj ntoos hlav hnab tshos rau feem ntau hnyav-roj injectors los ntawm Bosch, L'Orange, thiab Duap. Txhua shim yog passivated los tiv thaiv acidic condensate, thiab txhua qib thickness yog laser-engraved nrog nws tus nqi nominal rau ntawm ntug kom yooj yim txheeb xyuas txawm nyob rau hauv dim engine-chav teeb pom kev zoo.

Txoj hauv kev zoo tshaj plaws ntawm kev ntsuas rab koob nqa nrog lub dial taw qhia tsis txaus rau HFO cov tshuab vim tias cov viscous rub tsim ib qho kev sib raug zoo ntawm kev nqa thiab kev txhaj tshuaj. Hloov chaw, peb pom zoo kom muaj kev ntsuam xyuas lub siab-khoov ntawm qhov kev sib tw high-speed common-rail test bench:

Sau qhov tseeb txhaj tshuaj siab ncentawm lub injector inlet thaum lub sij hawm tas sij hawm tsav mem tes (piv txwv li, 0.5 ms ntawm 1200 bar).

Ntsuas lub sijhawm luvlos ntawm qhov pib ntawm hluav taws xob excitation mus rau qhov inflection point qhov twg siab poob (qhia rau koob qhib).

Muab piv rau lub sijhawm norau tus nqi nominal teev rau koj lub cav qauv ntawm tib lub roj kub (feem ntau 80-90℃rau HFO).

Yog tias ncua sij hawm ntev duatshaj nominal, lub shim yog nyias (tsis txaus preload); xaiv ib lub thicker shim los ntawm cov khoom siv. Yog tias qhov ncua sij hawm luv dua, xaiv lub shim thinner.

Txhua 0.02 hli thickness hloovhloov qhov qhib ncua los ntawm kwv yees li 0.10-0.15 ms, uas txhais ua 1.5-2.0℃crank lub kaum sab xis ntawm 1800 rpm - txaus los hloov combustion phasing noticeably.

Txoj kev no suav nrog ob qho tib si kev hnav khaub ncaws thiab cov khoom siv roj sib txawv, ua rau nws muaj zog rau cov neeg tsav nkoj uas hloov ntawm HFO cov neeg muab khoom sib txawv.

Heavy fuel contains vanadium, sodium, and sulfur, which form corrosive deposits at high temperatures. The super‑austenitic grade offers a PREN (Pitting Resistance Equivalent Number) of >45, deb superior rau cov pa caij nplooj ntoos hlav hlau. Tsis tas li ntawd, txhua tus shim yog coated nrog nyias txheej ntawm anti-seize qhuav zaj duab xis (MoS₂) los tiv thaiv galling tiv thaiv lub caij nplooj ntoos hlav lub rooj zaum thaum sib dhos. Batch-tested rau 2000 teev nyob rau hauv ib tug 250℃kub-roj da dej, cov shims qhia tsis ntsuas thickness poob los yog nto pitting. Daim ntawv pov thawj tshwj xeeb muaj peev xwm nkag tau los ntawm QR code ntawm lub thawv khoom siv, cov ntaub ntawv hardness, flatness, thiab ntsev-spray kuj (ISO 9227, 720 teev).

Q1: Cov roj kub li cas cuam tshuam rau kev xaiv shim?
Cov roj kub siab dua txo cov viscosity, ua rau lub koob qhib sai dua. Yog tias koj lub cav ua haujlwm tsis tu ncua HFO ntawm 110℃es tsis yog 85 degree, koj yuav xav tau 0.02-0.04 mm thinner shim los tiv thaiv kev nce qib SOI.

Q2: Kuv puas tuaj yeem siv cov khoom siv no rau cov twj tso kua mis khiav ntawm marine diesel roj (MDO) lossis LNG?
Yog, tab sis lub hauv paus thickness yuav txawv. Rau MDO, uas muaj qis viscosity, koj feem ntau yuav tsum tau nyias nyias (xws li, 1.60-1.70 mm). Qhov A- teeb no npog HFO- tshwj xeeb hnav; peb pom zoo kom sab laj lub cav qhov kev pabcuam phau ntawv rau lub hom phiaj qhib qeeb.

Q3: Dab tsi yog cov cim qhia tias tus shim xav tau hloov?
Rough idle, nce qhov kub ntawm qhov hluav taws xob tawg ntawm lub tog raj kheej, thiab ntsuas qhov ncua sij hawm nyob rau hauv lub injector tam sim no waveform (piv rau yav dhau los nyeem) tag nrho qhia tias shim preload tsis zoo dua.

Q4: Ntau npaum li cas shims yuav tsum tau soj ntsuam nyob rau hauv lub marine propulsion cav?
Thaum lub sij hawm txhua qhov kev hloov kho saum toj kawg nkaus, feem ntau txhua txhua 6,000-8,000 teev ua haujlwm. Txawm hais tias lub shim nws tus kheej yog undamaged, lub caij nplooj ntoos hlav thiab lub rooj hnav hloov lub thickness yuav tsum tau.

Q5: Puas yog cov khoom siv muaj xws li shims rau ob qho tib si tus tsav thiab theem kev txhaj tshuaj loj?
Qhov no A- teeb yog rau lub ntsiab injector tswj valve caij nplooj ntoos hlav. Pilot injectors feem ntau siv lub hnab ntim sib txawv; thov xyuas koj qhov injector specification ua ntej xaj.

Q6: Kuv puas tuaj yeem sib xyaw shims los ntawm cov qib tuab sib txawv hauv tib lub tuam txhab lub cav?
Tsis txhob. Tag nrho cov injectors nyob rau hauv tib lub cav yuav tsum muaj zoo tib yam shim thicknesses kom muaj xws li combustion. Kev sib xyaw ua rau lub tog raj kheej-rau-lub tog raj kheej tsis sib xws, ua rau muaj kev puas tsuaj thiab kev siv roj ntau ntxiv.

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:

Hloov txhab nyiaj

Txhawb ntau yam nyiaj txiag thiab kev them nyiaj hauv tuam txhab.

Western Union

Kev hloov nyiaj sai thiab thoob ntiaj teb.

PayPal

Kev nyab xeeb thiab yooj yim them nyiaj online.

Alibaba

Txaus siab rau kev tiv thaiv ntxiv nrog kev ntseeg siab Alibaba kev lag luam.

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: heavy fuel common rail injector adjustment shim kit – a-set 1.70–1.88 mm rau viscosity-dependent open dynamics, China heavy fuel common rail injector adjustment shim kit – a-set 1.70–1.88 mm rau viscosity manufacturers, dynamics qhib{7}