Rating and Derating for Mitsubishi Marine Engines - ScanDiesel ...

Rating Definitions for Marine Power GenerationSymbol&Ratio forOutputRating Overload DefinitionLimitedRunningTime+10%Applicable for supplying continuouspower paralleled with the utility forthe limited short-time period.AllowableAverage LoadFactor for 24Hours100% of RatedPowerOver-Load of110% can be usedfor less than 25hrsper year onemergency.80% of RatedPowerTypical OperationYearlyAverageLoad FactorLess than100%YearlyOperatingHoursLess than500HrTypical OverhaulIntervalTopComplete1000HrApplicationSeasonal PeakCutStand-by PowerSourcePPrimeUnlimitedRunningTime+10%Applicable for supplying power withvarying load instead of the utility foran unlimited time.100% of RatedPower is availableintermittently for3Hr per every24Hr operation.Over-Load of110% can be usedfor less than 25hrsper year onemergency.100% of RatedPowerLess than60%Unlimited8000through12000HrStand alonePower SourceDaily Peak CutPower Source forConstructionC Continuous +10%Applicable for supplying powercontinuously paralleled with theutility.Note: Diesel-electric drive installation is not included in this rating definition.Over-Load of110% can be usedfor less than 25hrsper year onemergency.Less than100%Unlimited 4000Hr 8000HrBase Load paralleled with theutilityT0102-0002E Rev.2 (3/3)

J.. MITSUBISHI DIESEL ENGINE ITEM NO. T0109-0001E (114)TECHNICAL INFORMATION DATE Oct., 2012STARTING AIDS1. GeneralThe ease with which a cold diesel engine can be started up is dependent largely but not solely on thetemperature of ambient air. This is more so with diesel engines, whose fuel is ignited and burned by the highair temperature produced by compression.In a cold diesel engine, its cold cylinder walls rapidly take heat from the compressed air during the initialengine cranking period. Moreover, its lube oil is far more viscous, making the crankshaft harder to turn.Intake air, if low in temperature, may not easily reach that high temperature level on each compression strokewhich is for sure and positive ignition to overcome the increased resistance of the engine's running parts. Incold weather, the battery is slightly down in its capacity. All these lead to "hard cranking," causing thestarting motor to draw more energy from the already weakened battery.Starting aids refer to methods and devices calculated to ease those factors of "hard cranking" under thespecified low-temperature conditions to be normally encountered by the engine.One such device is the jacket water heater. By heating the jacket water, it warms up the areas aroundcombustion chambers so that, upon firing up, the engine can be quickly made ready to take up load.2. Low-temperature specification of fuel, lubricating oil and coolantFor the purpose of specifying the types of fuel, oil and coolant for diesel engines to be used under lowtemperatureconditions, the range of ambient air temperature, from -1 OCC up to 5 c C is divided into three subranges;these liquids and the battery as items of low-temperature specification are prescribed for each subrange,as follows:Die s el fuel oilLubricating oilItemAmbient temperature COG)_10° to _5° I _5° to 0° 0° to 5°ASTM D 975 No. 2-DBS 2869 Clas s AMHI IFM No. T 54-0020-ERemarksC etane index of45 or moreSAE* lOW SAE * 30 * Society ofAutomotivexOr, alternatively, multi-grade SAE * 15W-40Engineers, Inc.* NationalLubricating grease NWI * No. 0 orNo. 1 NWI *No.2 LubricatingOre as e InstituteBattety Cold-temp. typeIStandard typeThis data updated T67-0050-E rev.2and newly acquired the ITEM NO.:::I...... 0r/l.~~First Edition: Oct., 2012Engine Engineering DepartmentEngine System Designing SectionApproved by Checked by Drawn byT.HASHIGUCHI T.OGURAK.N• MITSUBISHI HEAVY INDUSTRIES, LTD.~ GENERAL MACHINERY & SPECIAL VEHICLE

, ITEM NO. , T0109-0001E (2/4)3. Starting-aid devices and methods availableStandard devices and methods of starting aid are as follows:D evic e or metho d Purpose DescriptionTo reduce the resistance, which is high The heater is to be put in the oil pan. ItsOil pan heaterb ecaus e 0 f c old lubricating oil, 0 f the rurming heating action follows the jacket water heaterparts to start-up cranking action.in contro1.Jacket water heaterTo keep cylinder liners warm in a cold engine,so that the engine can be started more easilyand quickly made ready to take up load.It prevents damage to engine due to coolantfreezing.This heater is inserted into a lower section ofthe coolant path to promote convection flow.Its heating action is controlled.Lub e oil priming1) Periodical priming2) Start-up primingStart-up idling(low idling)To protect the bearings against loss oflubrication at the time of sudden enginestarting or loading.To prevent the bearings from losinglubricating films 0 f oil at c old engine starting.1) This method uses a motor-driven oilpump and a timer.(Example) Priming is to be performed for5 minutes at intervals of 6 hours while theengine is being shut down.2) This method uses a motor-driven oilpump or an air booster (in case ofanair-start engine).(Example) Priming is to be performed fora given p erio d 0 f time prior to start-upcranking of a cold engine.Idling run (at 112 the rated speed) is toimmediately follow firing up 0 f a c old engine.P.ir heaterThis device is fitted to the inlet manifold. It isTo raise the temperature of intake air in order turned on for about 20 to 60 seconds prior toto facilitate fuel ignition.start-up cranking. Available engines equippedwith a manually starter.• MITSUBISHI HEAVY INDUSTRIES, LTD ...... GENERAL MACHINERY & SPECIAL VEHICLE

4. Starting aids for engines arranged to start up automaticallyI ITEM NO. , TOI09-0001E (3/4)Starting aids are selectively used on automatically starting engines according to the startingtime specification, as shown in this chart:Standard starting aid chartStaring time 10 seconds 20 seconds 40 secondsAmbient temp., °C _100 to _50 _5 0 10 +5 0 Above +50 _10 0 10 _50 _5 0 10 +50 Above +5 0 _10 0 10 -SO _50 10 +SOOil pan healer 0 - 0 - 0 0Above +50-SIartingaidJ ackel water healer 0 0 0 0 0 0ProhibitionProhibitionLube oil priming(inlermittenl)0 *10 0 *10 - -SIart-up idling device - - 0 *10 0 0*2 0-*10El\ginemodelS 12R-2,S 16R-2 Prohibition Prohibition 0 0 0 0Olher modelsS12R-2,S16R-2 0 0 0 Prohibition 0 0 0 0are excluded.00*1: For "V" and other non-in-line engines*2: Only S12R-2 and S16R-2 are applied.NOTES:1) Unless otherwise specified, all engines are subjected to maintenance run for 5 to 10 minutes weekly.2) "Lube oil priming" and "start-up idling" need not be performed on L-6 engines (smaller than S6R2) onwhich maintenance run would be surely performed. (mark * 1)3) The starting aids shown above are for the standard devices for electric start engines and are subject tochange according to actual engine application.4) The cetane index of fuel oil to be used should be higher than 45. If fuel oil having a cetane index lessthan 45 (for instance: 40 up to 45) would be used unwillingly, the following treatments should be appliedand the contact to Mitsubishi Heavy Industries, Ltd. should be required for instruction.a) Install a jacket water heater.b) Ambient temperature should be:Above -5°e for 40-second starting timeAbove +5°e for lO-second starting time5) Install a jacket water heater in case of an air-start engine.6) S12R-2 and SI6R-2, the 1O-second starting time is prohibition.S12R-2 and SI6R-2, the jacket water heater should be installed 20-second and 40-secondstarting times and is not concerned with ambient temperature. (mark *2)• MITSUBISHI HEAVY INDUSTRIES, LTD ..... GENERAL MACHINERY & SPECIAL VEHICLE

ITEM NO. TOI09-0001E (4/4)5. Capacity and operating cycle data on starting aids(The information for SU series engines are described on "SU circuit diagram")Starting aidOil pan heaterStandard capacity200-watt heater, one(for S6B , S6B3 , SM3 , S6R , S6R2 engines)2 OD-watt heater, two(for S12A2 , Sl2H engines)Typical cycle patternS·OO-watt heater,two(for S12R, S16R, S16R2 engines)TimeJacket water heaterl-kW heater, one(for S6B , S6B3, SM3 engines)2 -kW heater, one(for S6B , S6B3 , S6A3, S6R, S6R2 engines)Lube oil priming pump(p erio dical)2-kW heater, two(for S12A2 , Sl2H, Sl2R, S16R, S16R2engines)Pump drive motor:OAkW(for S6B, S6B3 , SM3 engines)0.7S kW(for S6R, S6R2, SUA2 engines)l.SkW(for S12H, SUR, S16R, S16R2 engines)Time6 hrs~ lE- 5 minStart-up idling device(the 10-second startingtime is outside an object.)Solenoid rating:24V - lSA100V - 4.SAr:;i.Idling,Starter-J,~Rated, rpmI \l ~ Firing-up detection• MITSUBISHI HEAVY INDUSTRIES, LTD.~ GENERAL MACHINERY & SPECIAL VEHICLE