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WÄRTSILÄ WARTSILA 20, Product Manual

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16.5

Air borne noise

The airborne noise of the engine is measured as a sound power level according to ISO 9614-2.
Noise level is given as sound power emitted by the whole engine, reference level 1 pW. The
values presented in the graphs below are typical values, cylinder specific graphs are included
in the Installation Planning Instructions (IPI).

Fig 16-4

Sound power level for air borne noise

16.6

Exhaust noise

The exhaust noise of the engine is measured as the sound power emitted from the turbocharger
outlet without exhaust gas piping connected. Reference value 1 pW. The values presented in
the graphs below are typical values, cylinder specific graphs are included in the Installation
Planning Instructions (IPI).

16-4

Wärtsilä 20 Product Guide - a13 - 6 September 2016

Wärtsilä 20 Product Guide

16. Vibration and Noise

Summary of Contents for WARTSILA 20

Page 1: ...W RTSIL 20 PRODUCT GUIDE...

Page 2: ...L MATTERS SUITED ONLY FOR SPECIALISTS IN THE AREA AND THE DESIGN OF THE SUBJECT PRODUCTS IS SUBJECT TO REGULAR IMPROVEMENTS MODIFICATIONS AND CHANGES CONSEQUENTLY THE PUBLISHER AND COPYRIGHT OWNER OF...

Page 3: ...s of the W rtsil 20 Project Guides Updates Published Issue Technical data section updated 06 09 2016 1 2016 Numerous updates throughout the product guide 14 10 2015 1 2015 Chapters Fuel Oil System and...

Page 4: ...5 4 5 Engine storage 5 1 5 Piping Design Treatment and Installation 5 1 5 1 Pipe dimensions 5 2 5 2 Trace heating 5 2 5 3 Operating and design pressure 5 3 5 4 Pipe class 5 4 5 5 Insulation 5 4 5 6 Lo...

Page 5: ...8 14 4 Electrical consumers 15 1 15 Foundation 15 1 15 1 Steel structure design 15 1 15 2 Mounting of main engines 15 6 15 3 Mounting of generating sets 15 8 15 4 Flexible pipe connections 16 1 16 Vi...

Page 6: ...gines 19 3 19 2 Engine components 20 1 20 Product Guide Attachments 21 1 21 ANNEX 21 1 21 1 Unit conversion tables 21 2 21 2 Collection of drawing symbols used in drawings vi W rtsil 20 Product Guide...

Page 7: ...able 1 1 Rating table for W rtsil 20 Generating sets Main engines Cylinder configuration 1000 rpm 50 Hz 900 rpm 60 Hz 1000 rpm Generator kVA Engine kW Generator kVA Engine kW bhp kW 950 800 880 740 10...

Page 8: ...0 2002 E The ISO standard reference conditions are 100 kPa total barometric pressure 25 C air temperature 30 relative humidity 25 C charge air coolant temperature Correction factors for the fuel oil c...

Page 9: ...4 624 325 1800 1713 1756 1449 1614 4076 4299 W 9L20 F1 for dry sump and F2 for deep wet sump Weight T T S S R R P P N N M M Engine 7 2 349 694 248 920 665 854 W 4L20 9 3 343 266 763 762 328 328 971 12...

Page 10: ...1270 1420 1570 895 975 1025 725 2300 4575 663 5325 W 6L20 20 7 1390 2474 2524 1730 1880 1800 1920 2070 1420 1570 1025 1075 725 2310 5100 731 6030 W 8L20 23 8 1390 2524 2574 1880 2110 1800 2070 2300 1...

Page 11: ...from overload The load control reduces the propeller pitch automatically when a pre programmed load versus speed curve engine limit curve is exceeded overriding the combinator curve if necessary The e...

Page 12: ...t not be exceeded in service except temporarily during acceleration and manoeuvring A fixed pitch propeller for a free sailing ship is therefore dimensioned so that it absorbs max 85 of the engine out...

Page 13: ...ll torque down to 80 of nominal engine speed This requirement results in significant de rating of the engine 2 3 Loading capacity Controlled load increase is essential for highly supercharged diesel e...

Page 14: ...ergency curve is close to the maximum capability of the engine If minimum smoke during load increase is a major priority slower loading rate than in the diagram can be necessary below 50 load Large lo...

Page 15: ...full load are however normal If the vessel has also other operating modes a slower loading ramp is recommended for these operating modes In typical auxiliary engine applications there is usually no si...

Page 16: ...ontinuous operation on heavy fuel is preferred rather than changing over to diesel fuel at low load operation and manoeuvring The following recommendations apply Absolute idling declutched main engine...

Page 17: ...340 335 340 335 335 C Temperature after turbocharger 85 load TE517 340 350 340 340 335 350 335 335 C Temperature after turbocharger 75 load TE517 355 385 355 355 355 385 355 355 C Temperature after t...

Page 18: ...mp capacity main stand by 8 6 10 4 8 6 10 5 8 6 10 4 8 6 10 4 8 6 10 4 8 6 10 5 8 6 10 4 8 6 10 4 m h Priming pump capacity 50Hz 60Hz 0 27 0 27 0 27 0 27 0 27 0 27 0 27 0 27 m Oil volume wet sump nom...

Page 19: ...0 3000 3000 kPa Pressure nom 3000 3000 3000 3000 3000 3000 3000 3000 kPa Pressure max 1800 1800 1800 1800 1800 1800 1800 1800 kPa Low pressure limit in air vessels 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 Nm3...

Page 20: ...75 load TE517 364 400 364 364 340 350 340 340 C Temperature after turbocharger 50 load TE517 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 kPa Backpressure max 388 391 388 376 390 391 390 375 mm Calculated pipe dia...

Page 21: ...ineness nom 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 g kWh Oil consumption at 100 load max 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 kPa Crankcase ventilation backpressure max 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4...

Page 22: ...2 1 2 1 2 1 2 Nm3 Starting air consumption start successful Notes At ISO 15550 conditions ambient air temperature 25 C LT water 25 C and 100 load Flow tolerance 5 Note 1 At ISO 15550 conditions ambien...

Page 23: ...load TE517 355 385 355 355 355 385 355 355 C Temperature after turbocharger 50 load TE517 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 kPa Backpressure max 451 453 451 433 451 453 451 433 mm Calculated pipe diamet...

Page 24: ...ineness nom 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 g kWh Oil consumption at 100 load max 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 kPa Crankcase ventilation backpressure max 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4...

Page 25: ...2 1 2 1 2 1 2 Nm3 Starting air consumption start successful Notes At ISO 15550 conditions ambient air temperature 25 C LT water 25 C and 100 load Flow tolerance 5 Note 1 At ISO 15550 conditions ambien...

Page 26: ...load TE517 364 400 364 364 340 350 340 340 C Temperature after turbocharger 50 load TE517 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 kPa Backpressure max 476 479 476 461 476 479 476 459 mm Calculated pipe diamet...

Page 27: ...ineness nom 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 g kWh Oil consumption at 100 load max 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 kPa Crankcase ventilation backpressure max 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4 2 2 1 4...

Page 28: ...2 1 2 1 2 1 2 Nm3 Starting air consumption start successful Notes At ISO 15550 conditions ambient air temperature 25 C LT water 25 C and 100 load Flow tolerance 5 Note 1 At ISO 15550 conditions ambien...

Page 29: ...kshaft The crankshaft is forged in one piece and mounted on the engine block in an under slung way 4 2 3 Connecting rod The connecting rod is of forged alloy steel All connecting rod studs are hydraul...

Page 30: ...ened cylinder head bolts are situated The exhaust valve seats are directly water cooled All valves are equipped with valve rotators 4 2 9 Camshaft and valve mechanism There is one cam piece for each c...

Page 31: ...versions The basic functionality is the same in both versions but the functionality can be easily expanded to cover different applications UNIC C1 has a completely hardwired signal interface with the...

Page 32: ...4 3 Cross sections of the engine Fig 4 2 Cross sections of the engine 4 4 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 4 Description of the Engine...

Page 33: ...h Time between overhauls h 40000 30000 20000 10000 Piston crown 20000 10000 20000 10000 Piston rings 60000 40000 20000 10000 Cylinder liner 60000 50000 20000 10000 Cylinder head 40000 30000 20000 1000...

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Page 35: ...be continuously rising Flanged connections shall be used cutting ring joints for precision tubes Maintenance access and dismounting space of valves coolers and other devices shall be taken into consi...

Page 36: ...ngine should be max 0 1 MPa 1 bar when the bottle pressure is 3 MPa 30 bar It is essential that the instrument air pressure feeding to some critical control instrumentation is not allowed to fall belo...

Page 37: ...int and consequently the discharge pressure may rise to 0 5 MPa 5 bar with closed or throttled valves The minimum design pressure is 0 5 MPa 5 bar The nearest pressure class to be selected is PN6 Pipi...

Page 38: ...e all piping must be cleaned according to the methods listed below Table 5 3 Pipe cleaning Methods System A B C D F Fuel oil A B C D F Lubricating oil A B C Starting air A B C Cooling water A B C Exha...

Page 39: ...of flexible pipe connections between resiliently mounted engines and ship s piping Flexible pipe connections must not be twisted Installation length of flexible pipe connections must be correct Minimu...

Page 40: ...m the first support First three supports closest to the engine or generating set should be fixed supports Where necessary sliding supports can be used after these three fixed supports to allow thermal...

Page 41: ...supports of flexible pipe connections 4V60L0796 Fig 5 3 Pipe clamp for fixed support 4V61H0842 W rtsil 20 Product Guide a13 6 September 2016 5 7 5 Piping Design Treatment and Installation W rtsil 20...

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Page 43: ...enough to meet the min injection viscosity limit of the engine DMA A high quality distillate generally designated as MGO Marine Gas Oil DMZ A high quality distillate generally designated as MGO Marine...

Page 44: ...s not clear and bright the total sediment by hot filtration and water tests shall be required 3 If the sample is not clear and bright the test cannot be undertaken and hence the oxidation stability li...

Page 45: ...itional properties specified by W rtsil which are not included in the ISO specification 1 Max 1010 kg m at 15 C provided that the fuel treatment system can remove water and solids sediment sodium alum...

Page 46: ...l shall be considered to contain ULO when either one of the following conditions is met Calcium 30 mg kg and zinc 15 mg kg Calcium 30 mg kg and phosphorus 15 mg kg 8 6 4 W rtsil 20 Product Guide a13 6...

Page 47: ...volume Water before engine max ISO 10370 0 50 mass Micro carbon residue max ISO 6245 LP1001 0 05 mass Ash max ISO 10478 100 mg kg Phosphorus max ISO 10478 15 mg kg Silicon max ISO 10478 30 mg kg Alkal...

Page 48: ...0 Class 1 Rating Copper strip corrosion 3h at 50 C max EN 14104 0 5 mg KOH g Acid number max EN 14111 16300 120 g iodine 100 g Iodine number max EN 14103 96 5 mass FAME content min 2 EN 14103 12 mass...

Page 49: ...re engine inlet PT101 Fuel oil temperature engine inlet TE101 Stand by pump switch PS110 Fuel oil leakage injection pipe LS103A Standard Pressure class Size Pipe connections DIN 2353 PN100 OD28 Fuel i...

Page 50: ...el inlet 101 DIN 2353 PN160 OD18 Fuel outlet 102 ISO 3304 OD18 Leak fuel drain clean fuel 103 ISO 3304 OD22 Leak fuel drain dirty fuel 1041 ISO 3304 OD18 Leak fuel drain dirty fuel 1043 The engine can...

Page 51: ...on the engine This pressure control valve maintains desired pressure before the injection pumps 6 2 1 Leak fuel system Clean leak fuel from the injection valves and the injection pumps is collected on...

Page 52: ...n multiple engine installations where several engines are connected to the same fuel feed circuit it must be possible to close the fuel supply and return lines connected to the engine individually Thi...

Page 53: ...nearest viscosity temperature line in the diagram Example 2 Known viscosity 60 cSt at 50 C K The following can be read along the dotted line viscosity at 80 C 20 cSt temperature at fuel injection pump...

Page 54: ...ature higher than the viscosity would require Continuous separation is nowadays common practice which means that the HFO day tank temperature normally remains above 90 C The temperature in the MDF day...

Page 55: ...tion pump in the fuel feed system The filter must have a low pressure drop to avoid pump cavitation Separator mode of operation The best separation efficiency is achieved when also the stand by separa...

Page 56: ...s designed by the separator manufacturer Typically separator modules are equipped with Suction strainer 1F02 Feed pump 1P02 Pre heater 1E01 Sludge tank 1T05 Separator 1S01 1S02 Sludge pump Control cab...

Page 57: ...after the heater depends on the viscosity but it is typically 98 C for HFO and 20 40 C for MDF The optimum operating temperature is defined by the sperarator manufacturer The required minimum capacit...

Page 58: ...ations 1S02 A separator for MDF is recommended also for installations operating primarily on HFO The MDF separator can be a smaller size dedicated MDF separator or a stand by HFO separator used for MD...

Page 59: ...MDF 1F07 Quick closing valve FO tank 1V10 Flow meter MDF 1I03 Size Pipe connections OD28 Fuel inlet 101 OD28 Fuel outlet 102 ID18 Leak fuel drain clean fuel 103 OD22 Leak fuel drain dirty fuel free e...

Page 60: ...ng valve FO tank 1V10 Flowmeter MDF 1I03 Stand by pump MDF 1P08 Size Pipe connections Pos OD28 Fuel inlet 101 OD28 Fuel outlet 102 OD18 Leak fuel drain clean fuel 103 OD22 Leak fuel drain dirty fuel f...

Page 61: ...by pump The pump should be placed so that a positive static pressure of about 30 kPa is obtained on the suction side of the pump Design data 5 x the total consumption of the connected engine Capacity...

Page 62: ...ture 1 6 MPa 16 bar Design pressure 0 4 0 7 MPa 4 7 bar Set point 6 3 5 6 MDF cooler 1E04 The fuel viscosity may not drop below the minimum value stated in Technical data When operating on MDF the pra...

Page 63: ...by means of stored energy Depending on system design and classification regulations it may in some cases be permissible to use the emergency generator HFO engines without engine driven fuel feed pump...

Page 64: ...ve booster unit 1V03 Suction strainer MDF 1F07 Pressure control valve HFO 1V04 Automatic filter booster unit 1F08 Overflow valve HFO MDF 1V05 Flow meter booster unit 1I01 Overflow valve HFO MDF 1V05 1...

Page 65: ...HFO 1T18 Automatic filter Booster unit 1F08 Day tank LSMDF 1T21 Flow meter Booster unit 1I01 Settling tank LSMDF 1T22 Viscosity meter Booster unit 1I02 Changeover valve 1V01 Circulation pump MDF 1P03...

Page 66: ...oid thermal shock in the injection pumps The recommended fuel temperature change over rate at switching is maximum 2 C min Check compatibility when using mixed fuels clogging filters separators etc W...

Page 67: ...eration tank equipped with a level switch operated vent valve Two circulating pumps same type as the fuel feed pumps Two heaters steam electric or thermal oil one heater in operation the other as spar...

Page 68: ...with a fineness of 0 5 mm should be installed before each pump There must be a positive static pressure of about 30 kPa on the suction side of the pump Design data Total consumption of the connected e...

Page 69: ...sure Fineness 35 m absolute mesh size automatic filter 35 m absolute mesh size by pass filter Maximum permitted pressure drops at 14 cSt 20 kPa 0 2 bar clean filter 80 kPa 0 8 bar alarm Flow meter boo...

Page 70: ...re at the engine inlet may not exceed 135 C however The power of the heater is to be controlled by a viscosimeter The set point of the viscosimeter shall be somewhat lower than the required viscosity...

Page 71: ...in the feed line when the fuel lines to a parallel engine are closed for maintenance purposes The overflow valve should be dimensioned to secure a stable pressure over the whole operating range Design...

Page 72: ...engine connections 101 and 102 are disconnected and the supply and return lines are connected with a temporary pipe or hose on the installation side All filter inserts are removed except in the flush...

Page 73: ...used with HFO provided that the sulphur content of the fuel is relatively low and the BN remains above the condemning limit for acceptable oil change intervals BN 30 lubricating oils should be used to...

Page 74: ...ricating oil temp engine inlet TE201 Lubricating oil pressure engine inlet PT201 Lubricating oil temp engine inlet if ME TI201 Lubricating oil pressure engine inlet PTZ201 Lubricating oil temp engine...

Page 75: ...ubricating oil to electric driven pump if stand by pump 207 DN80 Lub oil from electric driven pump if stand by pump 208 DN32 Lubricating oil from separator and filling 213 DN32 Lubricating oil to sepa...

Page 76: ...speeds A stand by pump connection is available as option Concerning suction height flow rate and pressure of the pump see Technical data The pre lubricating pump is an electric motor driven gear pump...

Page 77: ...Lubricating oil to separator and drain 214 Suction filter Separator unit 2F03 Lubricating oil filling 215 Separator unit 2N01 Crankcase air vent 701 Separator pump Separator unit 2P03 Separator 2S01...

Page 78: ...priming pump 205 Suction filter Separator unit 2F03 DN80 Lubricating oil from electric driven pump 208 Suction strainer Prelubricating oil pump 2F04 DN65 Crankcase air vent 701 Suction strainer Stand...

Page 79: ...2F06 Sludge tank 2T06 Separator unit 2N01 New oil tank Low sulphur 2T11 Separator pump separator unit 2P03 Renovated oil tank low sulphur 2T13 Stand by pump 2P04 Pressure control valve 2V03 Transfer p...

Page 80: ...nded throughput of the separator Normally the pump is supplied and matched to the separator by the separator manufacturer The lowest foreseen temperature in the system oil tank after a long stop must...

Page 81: ...revent damages due to thermal expansion The return pipes from the engine oil sump must end beneath the minimum oil level in the tank Further on the return pipes must not be located in the same corner...

Page 82: ...215 Alternatively trough the crankcase cover or through the separator pipe The system should be arranged so that it is possible to measure the filled oil volume 7 3 4 Suction strainers 2F01 2F04 2F06...

Page 83: ...g vent pipes from the system oil tank The diameter of the pipe shall be large enough to avoid excessive back pressure Other possible equipment in the piping must also be designed and dimensioned to av...

Page 84: ...r driven stand by pump 2P04 is installed then piping shall be flushed running the pump circulating engine oil through a temporary external oil filter recommended mesh 34 microns into the engine oil su...

Page 85: ...The properties to be analyzed are Viscosity BN AN Insolubles Fe and Particle Count Commissioning procedures shall in the meantime be continued without interruption unless the commissioning engineer be...

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Page 87: ...t be closed during operation The nominal starting air pressure of 3 MPa 30 bar is reduced with a pressure regulator before the pnemautic starting motor If an exhaust waste gate is not possible e g wit...

Page 88: ...control 1 CV657 1 Turning gear position GS792 Air waste gate control 2 CV657 2 Charge air shut off valve position GS621 Stop solenoid 1 CV153 1 Standard Pressure class Size Pipe connections DIN 2353...

Page 89: ...ir vessel 3T01 Air dryer unit 3N06 Size Pipe connections OD28 Staring air inlet 301 OD6 Instrument air inlet 320 8 2 1 Starting air compressor unit 3N02 At least two starting air compressors must be i...

Page 90: ...4 500 1 Dimensions are approximate The starting air consumption stated in technical data is for a successful start During start the main starting valve is kept open until the engine starts or until th...

Page 91: ...g fittings and receivers Therefore it is recommended to install a filter before the starting air inlet on the engine to prevent particles to enter the starting air equipment An Y type strainer can be...

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Page 93: ...through the engines It is important that water of acceptable quality and approved corrosion inhibitors are used directly when the system is filled after completed installation 9 1 1 Corrosion inhibito...

Page 94: ...401 LT water temperature CAC outlet if FAKS CBM TE472 HT water temperature jacket inlet option TI401 LT water temperature CAC outlet option TI472 HT water temperature engine outlet TE402 LT water temp...

Page 95: ...ted on the engine while the LT temperature control valve can be either on the engine or separate In installations where the engines operate on MDF only it is possible to install the LT temperature con...

Page 96: ...sea water pump An engine driven sea water pump is available for main engines Fig 9 3 Engine driven sea water pump curves 9 4 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 9 C...

Page 97: ...ng unit 4N01 Temperature control valve Heat recovery 4V02 Evaporator unit 4N02 Temperature control valve Central cooler 4V08 Circulating pump Preheater 4P04 Size Pipe connections Pos DN65 HT water inl...

Page 98: ...in tank 4T04 Central cooler 4E08 Expansion tank 4T05 Preheating unit 4N01 Temperature control valve central cooler 4V08 Circulating pump Preheating unit 4P04 Transfer pump 4P09 Pipe connections are li...

Page 99: ...preheating HT 4P20 Heater preheater optional 4E05 Air venting 4S01 Central cooler 4E08 Expansion tank 4T05 Cooler installation parts 4E12 Temperature control valve HT 4V01 Cooler generator optional 4...

Page 100: ...4E04 Air venting 4S01 Heater preheater optional 4E05 Expansion tank HT 4T01 Central cooler 4E08 Expansion tank LT 4T02 Cooler installation parts 4E12 Temperature control valve HT 4V01 Cooler generato...

Page 101: ...Reduction gear 4E10 Air venting 4S01 Suction strainer Sea water 4F01 Drain tank 4T04 Preheating unit 4N01 Expansion tank 4T05 Stand by pump HT 4P03 Temperature control valve central cooler 4V08 Circul...

Page 102: ...4T04 Central cooler 4E08 Expansion tank 4T05 Preheating unit 4N01 Temperature control valve Heat recovery 4V02 Evaporator unit 4N02 Temperature control valve Central cooler 4V08 Circulating pump Preh...

Page 103: ...ater Preheater 4E05 Drain tank 4T04 Central cooler 4E08 Expansion tank 4T05 Cooler Generator 4E15 Thermostatic valve Heat recovery 4V02 Preheating unit 4N01 Thermostatic valve LT 4V08 Evaporator unit...

Page 104: ...ering also for this type of application 9 3 2 Sea water pump 4P11 The capacity of electrically driven sea water pumps is determined by the type of coolers and the amount of heat to be dissipated Signi...

Page 105: ...emperature after engine 91 C Tout HT water temperature after cooler 38 C Tin Design data see chapter Technical Data Fresh water flow see chapter Technical Data Heat to be dissipated max 60 kPa 0 6 bar...

Page 106: ...298 275 695 505 106 44 3 32 36 38 54 3 27 1000 W 4L20 321 288 845 655 150 43 5 32 53 38 53 3 40 1000 W 6L20 341 298 845 655 198 43 8 32 71 38 53 6 53 1000 W 8L20 354 305 1095 905 221 43 8 32 80 38 53...

Page 107: ...through the heat recovery can be increased The heat available from HT cooling water is affected by ambient conditions It should also be taken into account that the recoverable heat is reduced by circu...

Page 108: ...The cooling water circulating through the cylinders must be preheated to at least 60 C preferably 70 C This is an absolute requirement for installations that are designed to operate on heavy fuel but...

Page 109: ...me h t Engine specific coefficient 0 5 kW keng Number of cylinders ncyl P 2 kW cyl The formula above should not be used for 9 3 9 2 Circulation pump for preheater 4P04 Design data 0 3 m3 h per cylinde...

Page 110: ...45 8 45 505 350 755 900 1250 DN40 150 8 54 9 3 10 Throttles Throttles orifices are to be installed in all by pass lines to ensure balanced operating conditions for temperature control valves Throttles...

Page 111: ...uxiliary diesel engines Exhaust gas piping Generators Electric appliances and lighting Boilers Steam and condensate piping Tanks It is recommended to consider an outside air temperature of no less tha...

Page 112: ...uld be avoided during all conditions service conditions slow steaming and in port Cold draft in the engine room should also be avoided especially in areas of frequent maintenance activities For very c...

Page 113: ...ulate with an air density corresponding to 30 C or more when translating the mass flow into volume flow The expression below can be used to calculate the volume flow where combustion air volume flow m...

Page 114: ...ed away from the engine when the intake air is cold so that the air is allowed to heat up in the engine room 10 2 1 Charge air shut off valve rigsaver optional In installations where it is possible th...

Page 115: ...der TE50 1A Charge air pressure CAC outlet PT601 2 Exhaust gas temperature TC inlet TE511 Air temperature TC inlet if FAKS CBM TE600 Exhaust gas temperature TC outlet TE517 Charge air temperature CAC...

Page 116: ...gine 0 30 60 90 W 6L20 0 30 60 90 W 8L20 0 30 60 90 W 9L20 Fig 11 3 Exhaust pipe diameters and support DAAF014083 B mm A mm Engine 300 350 250 W 6L20 350 450 300 W 8L20 350 450 300 W 9L20 11 2 W rtsil...

Page 117: ...t and straight as possible Pipe bends and expansions should be smooth to minimise the backpressure The diameter of the exhaust pipe should be increased directly after the bellows on the turbocharger P...

Page 118: ...e or high damping stainless steel wire pads Adequate thermal insulation must be provided to protect rubber mounts from high temperatures When using resilient mounting the alignment of the exhaust bell...

Page 119: ...Exhaust gas boiler If exhaust gas boilers are installed each engine should have a separate exhaust gas boiler Alternatively a common boiler with separate gas sections for each engine is acceptable For...

Page 120: ...number of correction factors The spectrum of the required attenuation in the exhaust system is achieved when the free field sound power A is transferred into sound pressure B at a certain point and c...

Page 121: ...made according to the engine characteristics to the sound level requirements and to other equipment installed in the exhaust gas system like SCR exhaust gas boiler or scrubbers The CSS system is built...

Page 122: ...a condense drain but it comes without mounting brackets and insulation The silencer can be mounted either horizontally or vertically The noise attenuation of the standard silencer is either 25 or 35 d...

Page 123: ...the engine with a detachable rubber hose The rubber hose is connected with quick couplings and the length of the hose is normally 10 m One dosing unit can be used for several engines Water supply Fre...

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Page 125: ...nitrogen usually inert react with oxygen to form Nitric oxide NO and Nitrogen dioxide NO2 which are usually grouped together as NOx emissions Their amount is strictly related to the combustion tempera...

Page 126: ...trogen Oxides applies to diesel engines over 130 kW installed on ships built defined as date of keel laying or similar stage of construction on or after January 1 2000 and different levels Tiers of NO...

Page 127: ...EIAPP certificate is part of the IAPP International Air Pollution Prevention Certificate for the whole ship IMO NOx emission standards The first IMO Tier 1 NOx emission standard entered into force in...

Page 128: ...engines 130 kW installed in ships which keel laying date is 1 1 2016 or later when operating inside the North American ECA and the US Caribbean Sea ECA The IMO Tier 3 NOx limit is defined as follows...

Page 129: ...fuel oil used onboard a ship must currently not exceed 0 1 in weight The Marpol Annex VI has undertaken a review with the intention to further reduce emissions from ships The current and upcoming lim...

Page 130: ...significantly reduce NOx emissions when this is required Diesel engine exhaust emissions can be reduced either with primary or secondary methods The primary methods limit the formation of specific emi...

Page 131: ...rtance The CAN bus and the power supply to each module are both physically doubled on the engine for full redundancy Control signals to from external systems are hardwired to the terminals in the main...

Page 132: ...class is IP54 14 1 1 Local control panel and local display unit Operational functions available at the LCP Local start Local stop Local emergency speed setting selectors mechanical propulsion Normal e...

Page 133: ...Led indication of status and detected faults Digital status outputs Shutdown latching and reset Shutdown pre warning Shutdown override configuration depending on application Analogue output for engine...

Page 134: ...of cables Cable types typical From To Cable 2 x 2 5 mm2 power supply 2 x 2 5 mm2 power supply Engine Power Unit A 2 x 2 5 mm2 power supply Power unit Communication interface unit B 1 x 2 x 0 75 mm2 1...

Page 135: ...ng on installation Dimension of the power supply cables depends on the cable length Power supply requirements are specified in section Power unit Fig 14 4 Signal overview Main engine W rtsil 20 Produc...

Page 136: ...ntional fuel injection Startblockings are handled by the system on the engine main control module 14 2 1 1 Startblockings Starting is inhibited by the following functions Turning gear engaged Stop lev...

Page 137: ...load sharing between parallel engines fuel limiters and various other control functions e g ready to open close clutch speed filtering Overload protection and control of the load increase rate must h...

Page 138: ...ating oil pump must always be running when the engine is stopped The pump shall start when the engine stops and stop when the engine starts The engine control system handles start stop of the pump aut...

Page 139: ...starts the pump automatically via a motor starter if the cooling water pressure drops below a preset level when the engine is running There is a dedicated sensor on the engine for this purpose 14 4 1...

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Page 141: ...in the bolts and to ensure proper fastening the contact face underneath the seating top plate should be counterbored Holding down bolts are through bolts with lock nuts Selflocking nuts are acceptable...

Page 142: ...chined so that a contact surface of at least 75 is obtained against the chocks Recommended size of the chocks are 115 x 170 mm at the position of the fitted bolts 2 pieces and 115 x 190 mm at the posi...

Page 143: ...30 590 460 160 50 W 6L20 155 2680 2370 2260 1960 1830 590 460 160 50 W 8L20 155 2980 2670 2560 2260 2130 590 460 160 50 W 9L20 Fig 15 2 Main engine seating end view DAAE017514a D Dry sump mm D Wet sum...

Page 144: ...Fig 15 3 Chocking of main engines 3V69A0238C 15 4 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 15 Foundation...

Page 145: ...is generally available Conical rubber mounts are used in the normal mounting arrangement and additional buffers are thus not required A different mounting arrangement can be required for wider speed...

Page 146: ...tect the generating set bearings from possible fretting caused by hull vibration The number of mounts and their location is calculated to avoid resonance with excitations from the generating set engin...

Page 147: ...he generating set due to ship motions Hence no additional side or end buffers are required The rubber in the mounts is natural rubber and it must therefore be protected from oil oily water and fuel Th...

Page 148: ...onnections unnecessary bending or stretching should be avoided The external pipe must be precisely aligned to the fitting or flange on the engine It is very important that the pipe clamps for the pipe...

Page 149: ...ip designer should avoid natural frequencies of decks bulkheads and superstructures close to the excitation frequencies The double bottom should be stiff enough to avoid resonances especially with the...

Page 150: ...L20 0 4 0 4 203 225 0 6 0 7 135 150 17 8 17 7 67 5 75 900 1000 W 9L20 Table 16 4 Rolling moments at 0 load MX kNm Frequency Hz MX kNm Frequency Hz MX kNm Frequency Hz Speed rpm Engine 0 9 0 9 90 100 1...

Page 151: ...borne noise levels above and below resilient mounts DAAB814306 Fig 16 3 Generating sets typical structure borne noise levels above and below resilient mounts DBAB120103 W rtsil 20 Product Guide a13 6...

Page 152: ...nstallation Planning Instructions IPI Fig 16 4 Sound power level for air borne noise 16 6 Exhaust noise The exhaust noise of the engine is measured as the sound power emitted from the turbocharger out...

Page 153: ...Fig 16 5 Sound power level for exhaust noise W rtsil 20 Product Guide a13 6 September 2016 16 5 16 Vibration and Noise W rtsil 20 Product Guide...

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Page 155: ...pling can be mounted on the flywheel without intermediate bearings The type of flexible coupling to be used has to be decided separately in each case on the basis of the torsional vibration calculatio...

Page 156: ...n transmit some torque Wind milling at a low propeller speed 10 rpm can due to poor lubrication cause excessive wear of the bearings The shaft locking device can be either a bracket and key or an easi...

Page 157: ...ve 1 DAAE079074A Dimensions mm Rating kW 1 F E C B A D2 D1 108 280 970 860 610 170 100 1700 1 118 300 990 880 630 185 110 2200 1 Dimensions mm Rating kW A D1 105 80 700 1 150 120 2300 1 External suppo...

Page 158: ...he OD box SKF couplings and rotating parts of the bearings Mass moment of inertia of the propeller at full zero pitch in water Torsional stiffness or dimensions of the shaft Material of the shaft incl...

Page 159: ...onal profile load distribution over time Clutch in speed Power distribution between the different users Power speed curve of the load 17 6 Turning gear The engine can be turned with a manual ratchet t...

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Page 161: ...ance and operation Fig 18 1 Minimum crankshaft distances main engine DAAE006291A Fig 18 2 Minimum crankshaft distances gen erating sets DAAE007434C F mm E mm Engine 1270 1420 1970 2020 W 4L20 1270 142...

Page 162: ...arrangement is usually best handled with a chain block on a rail located above the turbocharger axis 18 2 3 Maintenance platforms In order to enable efficient maintenance work on the engine it is advi...

Page 163: ...ol B1 1580 Height of the lifting eye for the charge air cooler lifting tool B2 390 Recommended lifting point for charge air cooler lifting tool B3 590 Recommended lifting point for charge air cooler l...

Page 164: ...ye for the charge air cooler lifting tool B2 550 550 550 260 Recommended lifting point for charge air cooler lifting tool B3 560 Recommended lifting point for charge air cooler lifting tool B4 800 560...

Page 165: ...550 550 260 Recommended lifting point for charge air cooler lifting tool B3 560 Recommended lifting point for charge air cooler lifting tool B4 560 Width for removing main bearing side screw C1 635 D...

Page 166: ...1000 700 Camshaft overhaul distance flywheel end I2 1825 Space necessary for access to the connection box J1 500 Service space for generator K1 18 6 W rtsil 20 Product Guide a13 6 September 2016 W rt...

Page 167: ...nes 3V83D0285c Wet sump Dry sump L mm Engine B mm A mm B mm A mm 600 725 600 725 2600 W 4L20 675 824 600 624 3200 W 6L20 675 824 600 624 3500 W 8L20 675 824 600 624 4100 W 9L20 W rtsil 20 Product Guid...

Page 168: ...Fig 19 2 Lifting of generating sets 3V83D0300c 19 2 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 19 Transport Dimensions and Weights...

Page 169: ...0 160 380 345 626 215 568 636 1097 W 6L20 160 380 345 626 340 675 760 1339 W 8L20 160 380 345 626 340 667 773 1339 W 9L20 Lubricating oil cooler insert Engine Weight kg L mm J mm H mm 80 396 896 150 W...

Page 170: ...19 2 2 Major spare parts Fig 19 3 Major spare parts 4V92L1283b 19 4 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 19 Transport Dimensions and Weights...

Page 171: ...F format Drawings are available in PDF and DXF format and in near future also as 3D models Consult your sales contact at W rtsil to get more information about the product guides on the Business Online...

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Page 173: ...inertia and torque conversion factors Power conversion Multiply by To Convert from Multiply by To Convert from 23 730 lbft2 kgm2 1 360 hp metric kW 737 562 lbf ft kNm 1 341 US hp kW Flow conversion f...

Page 174: ...21 2 Collection of drawing symbols used in drawings Fig 21 1 List of symbols DAAE000806c 21 2 W rtsil 20 Product Guide a13 6 September 2016 W rtsil 20 Product Guide 21 ANNEX...

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Page 178: ...bal leader in complete lifecycle power solutions for the marine and energy markets By emphasising technological innovation and total efficiency W rtsil maximises the environmental and economic perform...

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