lubrucating sys
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1-0304-EN
Lubrication System CLU4for lubrication oflarge 2-stroke crosshead diesel engines
- your operating costs are cut thanks to lower oil consumption
The advantages you get from a system
Drivenbyacommonrailsystemortheoptionaloilsupplyunit
Modularstructureothetimedlubricatormakessurethesystemcanbeservicedwhileinoperation(noredundancyrequired)
Timedlubricatorwithpistonportcontrol,additionalheatingde-vicesarenormallynotrequired
Mechanicallydefned,non-adjustablemeteringratesandin-
tegratedvalveunctionspreventoperatingerrors
Aseparatecontrolelectronicsunitmonitorsthelubricationunc-tionsoeachcylinder(ALM-unit)
High-perormancefltersystemwithscaleormeasurementototaloilconsumption
Lowinstallationcoststhankstotheintegratedbus-technology
Amoderntimedlubricationsystem,irequired,withnozzlesortheOEMmarket
Adaptableorall2-strokecrossheaddieselenginesrangingrom600to6000kW/cylinderwith6to8quillseach
The mature CLU4 technology is now available in the compactCLU4-C size
WRTSILoersacompleteretroftsolutionincludinginstallation,ortheengineseriesRT48-96.
Com
monRail
MasterControlUnit
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CLU 4 Lubrication system for large 2-stroke crosshead diesel engines
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MasterControlUnit
Fordecades, SKF Lubrication SystemsGermany AG manuacturescylinderlubri-cationsystemsorlarge2-strokecrossheaddieselengines.Speciallydevelopedlubepumpsinconjunctionwithso-calledaccumu-latorsensureeicient,load-dependentlubri-cationothecylinders.
InadditiontotheexistingCLU3systemwithitssystem-relatedadvantages,suchashighreliability,easeooperationandsimplemain-tenance,theullyelectronicallycontrolledCLU4systemwasdeveloped.TheaimotheCLU4developmentwastobringtheoilcon-sumptionevenmoreintolinewiththemainloadactorsandoperatingconditions.
Themainactorsinvolvedincludetheenginespeed,load,startingandrunning-instatusetc.Moreover,attentionisalsopaidtothe
uelandthelubricantcomposition.
AtertheMasterControlUnitevaluatestheloadactorsitoptimizesthecyclerateandmeteringinstant.Withanoptimalsystemdesignandadjustmentitispossibletocutoilconsumptionevenmoretoroughly0.8g/kWh(0.5g/BHPh),thusgoingeasyonresources.
ThenewlydevelopedCLU4electroniccylin-derlubricationsystemdoesthiswiththehelpothelatestcontrolelectronics.Thankstoasmartcombinationwithspecialquillsinthe
wallothecylinderitispossibletoweteverypointonthemovingpistons,e.g.theringpa-ckage,pistonskirt,etc.
Incaseospecialquillswithintegratedspraynozzles,theheavilyloadedcylinderwallcanbelubricatedalsodirectly.
Since2009,thissystemisalsoavailableasaCLU4-Cversionwithacompactpumpdesign.
System function CLU4 andCLU4-C
TheCLU4lubesystemonmodernengineswithcommonrailtechnologyconsistspri-
marilyo:
timedlubricators(1percylinder)with6to8outletportsandexternalmonitoringelectronics
Quillsandspeciallydevelopedmastercontrolunit(providedbycustomer).
Filtersystemwithscaleormeasurementototaloilconsumption.
Thecentralizedoilsupplysystemisactivatedbytheenginesmanagementsystembeoretheenginestartsup.Sothankstomoderncommonrailtechnologyservo-oilisalreadyavailabletothetimedlubricatorsbeoretheenginestarts.Thelubricating-oilneedsotherespectivecylindersaredeterminedbythemastercontrolunit.Alubepulseisemittedthroughthecontrolelectronicsduetoactua-tionoa4/2-waysolenoidvalve.
Themeteringpistonshung-inthecentraldrivepistonabruptlyexecuteajointlyde-
inedmeteringstroke.Thespecialquillswith/withoutaspray/injectionunctiondischargetheirexactquantityolubricantwithpinpointaccuracy.Dependingontheloadandoperat-ingstatealubepulseistriggeredwithevery2nd,3rd,4thornthpistonstrokeorcrankshatrevolution.
Amonitoringelectronicschecksthemeteringpressure.Thuschecksthepulselubricationsystemorblockage,trappedair,shortageolubricantanddriveaults.
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CLU 4 Lubrication system for large 2-stroke crosshead diesel engines
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>
flow diagramme CLU4 und CLU4-C
Driven by thecommon rail system
Driven by theoil supply unit
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CLU4 Lubrication system for large 2-stroke crosshead diesel engines
If necessary, e.g. to test individual
cylinders, it is possible to feed run-
ning-in oil or special oil
Powerful pressure boost, can also be
used for metering purposes in pres-sure zones or with nozzle concepts
Calibrated to your needs and tested
at the factory, adjustable by means of
exchangeable metering screw
Long service life thanks to the selec-
tion of special material combinations
and extra long guide arrangements
Constant stroke volume ensures con-
stant delivery characteristics and/orspray patterns
All important components are
mounted on a baseplate and thus
quickly exchangeable
High suction performance
Special features of the
timed lubricator CLU4-C
a compact version, without integrated
screw valves for lube oil cut-off and
pressure relief,
including quick coupling for checking
and filling the Nitrogen (N) filled pres-
sure accumulator
Timed lubricator
Depending on the application and type
of engine the pumps are equipped with
6 to 8 metering pistons and a calibrated
metering screw. The baseplate contains
the valve functions and is supplementedwith a pressure accumulator and solenoid
valve.
Features of the oil supply unit to beemphasized:
Vibration-proof version of an electric
motor with safe plug-type connection
Rugged high-pressure gear pump,
also suitable for oil feed systems
(3 to 8 bar)
Valve block with multiple functions and
integrated outlet-port connectors forsystem pressure relief and mainte-
nance while in operation
Double-walled piping, thus no lubri-
cant can leave the system due to a
possible leakage, leakage monitoring
centralized with pressure sensor.
Common features of the timed lubrica-tors (versions CLU4 and CLU4-C)
Forced metering of the lubricant
Wide range of lube oil viscosities -
thanks to piston port control
Solenoid valve to be both electrically
and manually operated
Compact design with integrated valve screws used to shut off the lubrica-
ting-oil and servo-oil system, and to
relieve the system of pressure during
maintenance work
Only one pressure accumulator per
pump, which permits fast metering
strokes and soft operation
Only two centrally located venting
screws (lube oil and drive oil)
Directly driven by the common rail
system or by the oil supply unit designed
with double walls for maximum safety
Oil supply unit Type SA/B(Only required for engines without com-
mon rail injection system or retrofit
applications.)
The oil supply unit comes in two perfor-
mance ranges for small/medium-size andlarge two-stroke engines. The two pump
units (one of them a standby pump) are
pre-installed on a baseplate together
with a valve block.
Basic pump CLU4 / CLU4-C Oil supply unit SA/B
New!
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CLU4 Lubrication system for large 2-stroke crosshead diesel engines
With the CLU 4 or CLU4-C cylinder lubrication system you get a product that meets thelatest lube technology requirements in the large diesel engine sector.
A maximum fire prevention results from its double-walled piping, which at the same
time meets the maximum safety requirements. The CLU 4 or CLU4-C system can be
expanded to handle any future development.
Talk to your 2-stroke engine manufacturer.
Decide in favor of a modern SKF cylinder lubrication system
Selection chart, SA/B oil supply unit
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Oil filter system withscale for measurementof oil consumptionA high-capacity suction filter is provided
for between the daily tank and the timed
lubricators located on the cylinders.
Features of the oil filter system to be
emphasized:
Generous dimensioning ensures long
service intervals
Benefits of the ingenious arrangement
of the shutoff valve and venting valve:
- change of filters while the system isin operation enabled
- measurement of the lubricating oil
consumption for all cylinders enabled
- air pockets in the oil flow avoided
Filter with dirt indicator as a standard
feature
Re-usable filter elements of stainless
steel.
Oil filter system with scale for measure-ment of oil consumption
Example of application with spray nozzlesBenefit: enables additional application of oilto the surface above the piston.
Extensive test series over a number ofyears prove the efficiency of our CLU4cylinder lubrication system.
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This brochure was presented by:
Order No. 1-0304-ENSubjecttochangewithoutnotice!(07/2009)
Important product usage informationAllproductsromSKFmaybeusedonlyortheirintendedpurposeasdescri-bedinthisbrochureandinanyinstructions.Ioperatinginstructionsaresup-pliedwiththeproducts,theymustbereadandollowed.Notalllubricantsaresuitableoruseincentralizedlubricationsystems.SKFdoesoeraninspectionservicetotestcustomersuppliedlubricanttodeter-mineiitcanbeusedinacentralizedsystem.SKFlubricationsystemsortheircomponentsarenotapprovedorusewithgases,liqueiedgases,pres-surizedgasesinsolutionandluidswithavaporpressureexceedingnormalatmosphericpressure(1013mbars)bymorethan0.5barattheirmaximumpermissibletemperature.
Hazardousmaterialsoanykind,especiallythematerialsclassiiedashazardousbyEuropeanCommunityDirectiveEC67/548/EEC,Article2,Par.2,mayonlybeusedtoillSKFcentralizedlubricationsystemsandcompon-entsanddeliveredand/ordistributedwiththesameaterconsultingwithandreceivingwrittenapprovalromSKF.
SKF Lubrication Systems Germany AG
2.Industriestrasse468766HockenheimGermanyTel.+49(0)620527-0Fax+49(0)620527-101www.sk.com/lubrication
SKFisaregisteredtrademarkotheSKFGroup.
SKFGroup2009Thecontentsothispublicationarethecopyrightothepublisherandmaynotbereproduced(evenextracts)unlesspriorwrittenpermissionisgran-ted.Everycarehasbeentakentoensuretheaccuracyotheinormationcontainedinthispublicationbutnoliabilitycanbeacceptedoranylossordamagewhetherdirect,indirectorconsequentialarisingoutotheuseotheinormationcontainedherein.
Brochure note
951-130-314-DE/-EN OperatormanualLubricationssystemCLU4951-130-332-DE/-EN OperatormanualLubricationssystemCLU4-C951-160-012-DE/-EN SparePartlistCLU4/CLU4-C
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