MAN B&W Low Speed Small Bore Engines Now with Electronic Control

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1、MANB&WLowSpeedSmallBoreEnginesNowwithElectronicControlContents:Introduction–Enginedata–EnginecomparisonME-Bfuelinjectioncontrolsystem–Injectionperformance–EnginecontrolsystemEnginedesign,S35/40/50ME-B–Bedplate,frameboxandcylinderframe–Crankshaft–Connectingrod–Bearings–Combustioncham

2、ber–Cylinderliner–Piston–Exhaustvalve–Fuelinjectionequipment–Thrustbearing–Enginecontrolsystem–TurbochargerandaircoolerarrangementConcludingRemarksMANDieselA/S,Copenhagen,Denmark5510-0025-00ppr-a.indd12007-10-0412:01:295510-0025-00ppr-a.indd22007-10-0412:01:29MANB&WLowSpeedSmallBore

3、EnginesNowwithElectronicControlIntroductionSincethedeliveryofthefirstL35MCdecades.However,themarketisal-in1982,atotalof~1000L35MC,waysmoving,andrequirementsforTheMANB&W35MCenginewas~500S35MC,~200L42MCandmorecompetitiveengines,i.e.thelow-launchedin1982astheL35MCwith~250S42MCenginesare

4、onorderorestpossiblepropellerspeed,lowerfuel500kW/cylinderandameaneffectivehavebeendelivered.Morethan1000consumption,lowerlubeoilconsump-pressureof14.8barat200rpm.Sev-S50MC-Chasbeendeliveredsincetionandmoreflexibilityregardingemis-eraldesignupdates,oftencombined1997.sionandeasyadjust

5、mentoftheenginewithapowerup,havebeenintroducedparameters,callforare-evaluationofsincethen,andwithtoday’sMark6rat-Theabove-mentionedsmallboretwo-thedesignparameters,enginecontroling,thepowerpercylinderis650kW/strokeengineshavebeentheworldandlayout.cylinderwithameanpressureof18.4leade

6、rsintheirmarketsegmentforbarat210rpm.Tomeetthemarketdemandforlowerpropellerspeed,andtherebyhigherpropulsionefficiency,thelong-strokeS35MC(seeFig.1)waslaunchedin1993with170rpmandameanpres-sureof18.4bar,resultingin700kW/cylinder.Sincethen,theS35MCenginehasbeenextensivelyusedinthepropul

7、sionofawidevarietyofvesselsrankinginsizesfrom5,000to25,000dwt.Tocaterfortheincreasingmarketde-mandforhigherpower,anupratedversionoftheS35MCwasintroducedin1998withameaneffectivepressureof19.1barat173rpm,thusproviding740kW/cylinder.Themarketalsorequireddirectcoupledtwo-strokeenginesin

8、the5-10,000kWoutput