L'Orange MTU 26-Tooth Spline Coupling - Phase-Accurate Torque Transmission Rau High-Speed ​​Diesel Txhaj

Nyob rau hauv MTU Series 2000 thiab 4000 high-speed diesel xyaw, L'Orange injector twj los yog unit injector yog tsav los ntawm ib tug splined coupling uas txuas lub camshaft-tsav iav mus rau lub twj tso kua mis plunger tus tsav tsheb ncej. Qhov no 26-hlau spline yog pom zoo raws li ib tug hnav-tiv taus mechanical txuas-tab sis qhov tseeb, nws ua hauj lwm raws li ib tugrotational theem modulator. Txhua qhov angular backlash los yog hniav-rau-tus hniav pitch yuam kev ncaj qha mus rau lub sij hawm jitter ntawm kev txhaj tshuaj pib, uas ntawm 1,800 rpm ua ib tug crank-angle sib txawv ntawm mus txog rau 0.6℃- txaus los hloov tag nrho combustion phasing thiab elevate NOx ib feem 8-feem ntau emissions. CovL'Orange MTU 26-Tooth Spline Couplingyog engineered tsis yog los hloov cov khoom hnav, tab sis los kho qhov qubangular kis tau tus mob fidelitylos ntawm kev tswj cov kev tshem tawm sab-haum rau ± 0.015 hli, kom ntseeg tau tias txhua qhov kev txhaj tshuaj tau txais qhov tseeb cam nqa profile npaj los ntawm tus tsim lub cav.

Qhov kev sib txuas no siv a30℃siab lub kaum sab xis involute spline(ib DIN 5480 los yog ISO 4156), nrog 26 hniav thiab ib tug module ntawm 1.25 hli rau cov ntawv MTU predominant. Nominal pitch txoj kab uas hla yog 32.5 hli, thiab cov hniav ntev yog 28 hli. Dab tsi distinguishes ib tug high-precision hloov los ntawm ib tug generic counterpart yog lubkev sib cuag piv-qhov nruab nrab ntawm cov hniav nyob rau hauv ib txhij kev koom tes. Peb coupling yog tsim los rau tag nrho kev sib cuag piv ntawm 1.6 (piv rau 1.2 ib txwm ntawm cov ntawv luam tom qab), ua tiav los ntawm kev tswj nruj dua ntawm lub hauv paus suab yuam kev (< 0.008 mm) and tooth helix deviation (< 0.010 mm over the full length). This elevated contact ratio reduces the peak tooth load by distributing torque across more flanks, lowering Hertzian contact stresses from an estimated 1,200 MPa to 950 MPa, which extends the fatigue life of both the coupling and the mating pump shaft under the pulsating torque characteristic of high‑pressure common rail systems.

MTU cov cav feem ntau ua haujlwm nyob rau hauv marine thiab lub zog-tsim ib puag ncig uas cov roj sulfur cov ntsiab lus thiab kev vibration theem ua rau fretting corrosion ntawm spline interface. Lub coupling yog forged los ntawmCase-carburizing steel 18CrNiMo7-6, hardened mus rau 58-62 HRC ntawm qhov chaw nrog ib tug core toughness ntawm 35 HRC. Tshaj li cov pa tawv tawv, cov flanks tau txais atungsten-disulfide (WS₂) txheej zaj duab xis qhuavsiv los ntawm magnetron sputtering, ua kom muaj kev sib txhuam coefficient ntawm 0.04-0.06 nyob rau hauv ciam lubrication. Cov txheej no ua haujlwm rau ob lub hom phiaj: nws txo qis microwelding thaum pib ua haujlwm, thiab nws them nyiaj rau lub sijhawm lubrication tshaib plab thaum lub caij txias. Lub thickness ntawm txheej yog 2-3 µm, uas tsis cuam tshuam rau lub spline lub suab txoj kab uas hla, tab sis nyob rau hauv microscopic asperities, zoo nce qhov chaw sib cuag los ntawm 40% piv rau uncoated steel.

Axial ntab ntawm lub coupling nyob rau hauv lub tsav iav hub yog feem ntau overlooked. Ib tug 0.10 hli kawg-float tso cai rau lub plunger hloov axially nyob rau hauv centrifugal rog, hloov lub zog stroke ntawm lub twj tso kua mis. Peb coupling feature ibintegrated thrust dab tshosnrog lub ntsej muag hauv av thaum uas tig mus rau spline axis hauv 0.005 hli. Thaum ntsia nrog lub Belleville lub tshuab ntxhua khaub ncaws (preload 120 N), axial hloov chaw yog txwv tsis pub tsawg dua 0.02 hli thoob plaws hauv lub tshuab ua haujlwm ceev. Qhov kev ruaj ntseg no ua kom lub twj tso kua mis rov qab lub caij nplooj ntoos hlav ua haujlwm ntawm nws qhov tsim ua ntej-compression, tswj kom muaj qhov seem seem zoo ib yam thiab tiv thaiv kev xa cov roj tsis zoo ntawm kev hloov pauv-ib qho tseem ceeb rau MTU cov cav siv hauv cov tshuab hluav taws xob sib txawv.

Kev soj ntsuam pom kev niaj hnub feem ntau nco txog cov theem pib ntawm flank hnav. Peb pom zoo kom siv aspline go/no-go plug gauge(muaj raws li ib qho khoom siv) uas simulates txiv neej spline ntawm lub twj tso kua mis ncej. Yog tias lub ntsuas ntsuas tuaj yeem tig tau ntau dua 2.5℃thaum muab tso rau hauv qhov sib txuas (nrog lub teeb ntiv tes torque), qhov sib txuam rov qab ntau dua 0.12 hli- qhov kev txwv kev pabcuam tsim los ntawm MTU cov lus qhia kev saib xyuas. Nyob rau hauv tas li ntawd, lub sij hawm scatter ua ib qho tseem ceeb, thiab hloov yog yuav tsum tau. Lub coupling tseem yog laser-cim nrog awear-indicator notchntawm ib tug hniav cag; Thaum qhov kev ntsuas no ploj mus vim qhov poob ntawm cov khoom siv flank, lub coupling yog vim muaj kev hloov tam sim ntawd, muab kev kuaj pom sai yam tsis muaj kev cuam tshuam.

Q1: Puas tuaj yeem siv 26-hlau txuas ntawm MTU Series 1163 lossis 595 lub cav?
Tsis yog. Cov cav no siv tus qauv spline sib txawv (21 lossis 28 hniav) nrog lub suab loj dua. Qhov kev sib txuas no yog qhov tshwj xeeb rau 2000 thiab 4000 Series twj tso kua mis. Thov paub meej tias koj lub cav serial prefix (xws li, 532-xxxx rau 4000) ua ntej xaj.

Q2: Kuv yuav ua li cas thiaj paub qhov txawv ntawm qhov hnav spline coupling thiab lub twj tso kua mis hnav?
Siv cov khoom siv mus / tsis mus rau ntawm ob qho tib si. Yog hais tias lub gauge haum xoob nyob rau hauv lub coupling tab sis snugly ntawm lub twj tso kua mis ncej, lub coupling yog tus culprit. Yog tias ob qho tib si ua si ntau dhau, lub twj tso kua mis kuj tseem yuav xav tau kev hloov pauv lossis rov ua haujlwm nrog kev sib txuas loj loj - tiv tauj peb rau kev xaiv qhov loj me.

Q3: Puas yog WS₂ txheej sib haum nrog cov roj av uas tsis muaj sulfur marine uas muaj lubricity tsis zoo?
Yog lawm. Cov txheej muab cov zaj duab xis zoo lubrication txawm tias roj dilution los yog dej paug txo cov roj zaj duab xis tuab. Peb tau sim nws nrog cov roj uas muaj tsawg dua 10 ppm sulfur; Kev sib txhuam coefficient tseem qis dua 0.08 tom qab 1,000 teev ntawm kev thauj khoom cyclic.

Q4: Dab tsi yog txoj hauv kev zoo rau kev tshuaj xyuas spline backlash yam tsis muaj qhov ntsuas tshwj xeeb?
Raws li qhov tsim nyog, clamp lub dial taw qhia mus rau lub twj tso kua mis lub cev, tiv tauj lub coupling sab nraud txoj kab uas hla, thiab tig lub iav tsav rov qab los ntawm tes. Tag nrho cov angular txav ntawm qhov sib txuas OD yuav tsum tsis pub tshaj 0.8 hli rau 38 hli vojvoog -qhov no sib raug rau kwv yees li 1.2℃ntawm backlash. Txawm li cas los xij, txoj kev no tsis tshua muaj tseeb dua li peb qhov kev ntsuas siab; peb pom zoo kom siv lub ntsuas ntsuas rau kev hloov kho tseem ceeb.

Q5: Kuv puas tuaj yeem rov siv lub hauv paus ruaj ntseg ntsia liaj qhov rooj yog tias nws zoo li tsis puas?
MTU qhia txog ib qho kev siv bolt vim yog txoj kev nruj nruj (torque-plus-angle), uas yields lub ntsia liaj qhov rooj rau hauv nws thaj av yas. Reusing lub ntsia liaj qhov rooj muaj kev pheej hmoo tsis txaus clamping quab yuam thiab muaj peev xwm loosening. Peb cov khoom siv suav nrog lub ntsia liaj qhov rooj tshiab nrog lub qhov rooj xauv qhov rooj rau qhov laj thawj ntawd.

Q6: Qhov kev sib txuas ua ke no cuam tshuam li cas rau cov kev tsheb ciav hlau siab ruaj khov ntawm qhov qis qis?
Hauv cov txheej txheem kev tsheb ciav hlau, lub twj tso kua mis muab cov kev tsheb ciav hlau, thiab txhua lub sijhawm jitter los ntawm kev sib txuas txhais mus rau hauv siab ripple. Peb qhov kev sib txuas ua ke nruj nruj tswj xyuas kom txo tau lub siab hloov pauv amplitude los ntawm kwv yees li 35% ntawm 700 rpm idle, raws li kev txheeb xyuas ntawm lub rooj ntev zaum sim nrog 16V4000 kev tsheb ciav hlau twj tso kua mis, ua rau smoother lub cav khiav lag luam thiab txo injector hnav.

 

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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