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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