wärtsilä 46df product guide

WÄRTSILÄ 46DFPRODUCT GUIDE

© Copyright by WÄRTSILÄ FINLAND Oy

All rights reserved. No part of this booklet may be reproduced or copied in any form or by any means (electronic,mechanical, graphic, photocopying, recording, taping or other information retrieval systems) without the prior writtenpermission of the copyright owner.

THIS PUBLICATION IS DESIGNED TO PROVIDE AN ACCURATE AND AUTHORITATIVE INFORMATION WITHREGARD TO THE SUBJECT-MATTER COVERED AS WAS AVAILABLE AT THE TIME OF PRINTING. HOWEVER,THEPUBLICATION DEALS WITH COMPLICATED TECHNICAL MATTERS SUITED ONLY FOR SPECIALISTS IN THEAREA, AND THE DESIGN OF THE SUBJECT-PRODUCTS IS SUBJECT TO REGULAR IMPROVEMENTS,MODIFICATIONS AND CHANGES. CONSEQUENTLY, THE PUBLISHER AND COPYRIGHT OWNER OF THISPUBLICATION CAN NOT ACCEPT ANY RESPONSIBILITY OR LIABILITY FOR ANY EVENTUAL ERRORS OROMISSIONS IN THIS BOOKLET OR FOR DISCREPANCIES ARISING FROM THE FEATURES OF ANY ACTUAL ITEMIN THE RESPECTIVE PRODUCT BEING DIFFERENT FROM THOSE SHOWN IN THIS PUBLICATION. THE PUBLISHERAND COPYRIGHT OWNER SHALL UNDER NO CIRCUMSTANCES BE HELD LIABLE FOR ANY FINANCIALCONSEQUENTIAL DAMAGES OR OTHER LOSS, OR ANY OTHER DAMAGE OR INJURY, SUFFERED BY ANYPARTY MAKING USE OF THIS PUBLICATION OR THE INFORMATION CONTAINED HEREIN.

Introduction

This Product Guide provides data and system proposals for the early design phase of marineengine installations. For contracted projects specific instructions for planning the installationare always delivered. Any data and information herein is subject to revision without notice.This 02/2016 issue replaces all previous issues of the Wärtsilä 46DF Project Guides.

UpdatesPublishedIssue

Small update to technical data04.11.20162/2016

Technical data updated09.09.20161/2016

First version of W46DF product guide03.10.20141/2014

Wärtsilä, Marine Solutions

Vaasa, November 2016

Wärtsilä 46DF Product Guide - a3 - 4 November 2016 iii

IntroductionWärtsilä 46DF Product Guide

Table of contents

1-11. Main Data and Outputs .......................................................................................................................1-11.1 Maximum continuous output .......................................................................................................1-21.2 Output limitations in gas mode ....................................................................................................1-31.3 Reference conditions ...................................................................................................................1-31.4 Operation in inclined position .....................................................................................................1-51.5 Dimensions and weights .............................................................................................................

2-12. Operating Ranges ................................................................................................................................2-12.1 Engine operating range ...............................................................................................................2-22.2 Loading capacity .........................................................................................................................2-52.3 Operation at low load and idling ..................................................................................................2-62.4 Low air temperature ....................................................................................................................

3-13. Technical Data ......................................................................................................................................3-13.1 Introduction ..................................................................................................................................3-13.2 Wärtsilä 6L46DF ..........................................................................................................................3-53.3 Wärtsilä 7L46DF ..........................................................................................................................3-83.4 Wärtsilä 8L46DF ..........................................................................................................................

3-113.5 Wärtsilä 9L46DF ..........................................................................................................................3-143.6 Wärtsilä 12V46DF ........................................................................................................................3-173.7 Wärtsilä 14V46DF ........................................................................................................................3-203.8 Wärtsilä 16V46DF ........................................................................................................................

4-14. Description of the Engine ....................................................................................................................4-14.1 Definitions ....................................................................................................................................4-14.2 Main components and systems ..................................................................................................4-64.3 Cross section of the engine .........................................................................................................4-84.4 Overhaul intervals and expected life times ..................................................................................4-94.5 Engine storage .............................................................................................................................

5-15. Piping Design, Treatment and Installation .........................................................................................5-15.1 Pipe dimensions ..........................................................................................................................5-25.2 Trace heating ...............................................................................................................................5-25.3 Pressure class ..............................................................................................................................5-35.4 Pipe class ....................................................................................................................................5-45.5 Insulation .....................................................................................................................................5-45.6 Local gauges ...............................................................................................................................5-45.7 Cleaning procedures ...................................................................................................................5-55.8 Flexible pipe connections ............................................................................................................5-65.9 Clamping of pipes ........................................................................................................................

6-16. Fuel System ..........................................................................................................................................6-16.1 Acceptable fuel characteristics ...................................................................................................6-76.2 Operating principles ....................................................................................................................6-86.3 Fuel gas system ...........................................................................................................................

6-156.4 Fuel oil system .............................................................................................................................

7-17. Lubricating Oil System ........................................................................................................................7-17.1 Lubricating oil requirements ........................................................................................................7-37.2 Internal lubricating oil system ......................................................................................................7-67.3 External lubricating oil system .....................................................................................................

7-137.4 Crankcase ventilation system ......................................................................................................7-157.5 Flushing instructions ....................................................................................................................

iv Wärtsilä 46DF Product Guide - a3 - 4 November 2016

Wärtsilä 46DF Product GuideTable of contents

8-18. Compressed Air System ......................................................................................................................8-18.1 Instrument air quality ...................................................................................................................8-18.2 Internal compressed air system ..................................................................................................8-68.3 External compressed air system .................................................................................................

9-19. Cooling Water System .........................................................................................................................9-19.1 Water quality ...............................................................................................................................9-29.2 Internal cooling water system ......................................................................................................9-49.3 External cooling water system ....................................................................................................

10-110. Combustion Air System .......................................................................................................................10-110.1 Engine room ventilation ...............................................................................................................10-210.2 Combustion air system design ....................................................................................................

11-111. Exhaust Gas System ............................................................................................................................11-111.1 Internal exhaust gas system ........................................................................................................11-311.2 Exhaust gas outlet .......................................................................................................................11-411.3 External exhaust gas system .......................................................................................................

12-112. Turbocharger Cleaning ........................................................................................................................

13-113. Exhaust Emissions ...............................................................................................................................13-113.1 Dual fuel engine exhaust components ........................................................................................13-113.2 Marine exhaust emissions legislation ..........................................................................................13-513.3 Methods to reduce exhaust emissions ........................................................................................

14-114. Automation System .............................................................................................................................14-114.1 UNIC C3 .......................................................................................................................................14-714.2 Functions ....................................................................................................................................

14-1114.3 Alarm and monitoring signals ......................................................................................................14-1214.4 Electrical consumers ...................................................................................................................

15-115. Foundation ............................................................................................................................................15-115.1 Steel structure design ..................................................................................................................15-115.2 Engine mounting ..........................................................................................................................

16-116. Vibration and Noise ..............................................................................................................................16-116.1 External forces and couples ........................................................................................................16-316.2 Torque variations .........................................................................................................................16-316.3 Mass moments of inertia .............................................................................................................16-416.4 Structure borne noise ..................................................................................................................16-516.5 Air borne noise .............................................................................................................................16-616.6 Exhaust noise ..............................................................................................................................

17-117. Power Transmission ............................................................................................................................17-117.1 Flexible coupling ..........................................................................................................................17-117.2 Clutch ..........................................................................................................................................17-117.3 Shaft locking device ....................................................................................................................17-217.4 Input data for torsional vibration calculations .............................................................................

18-118. Engine Room Layout ...........................................................................................................................18-118.1 Crankshaft distances ...................................................................................................................18-418.2 Space requirements for maintenance .........................................................................................18-718.3 Transportation and storage of spare parts and tools ..................................................................18-718.4 Required deck area for service work ...........................................................................................

19-119. Transport Dimensions and Weights ...................................................................................................19-119.1 Lifting of engines .........................................................................................................................

Wärtsilä 46DF Product Guide - a3 - 4 November 2016 v

Table of contentsWärtsilä 46DF Product Guide

19-219.2 Engine components .....................................................................................................................

20-120. Product Guide Attachments ...............................................................................................................

21-121. ANNEX ...................................................................................................................................................21-121.1 Unit conversion tables .................................................................................................................21-221.2 Collection of drawing symbols used in drawings ........................................................................

vi Wärtsilä 46DF Product Guide - a3 - 4 November 2016

Wärtsilä 46DF Product GuideTable of contents

1. Main Data and Outputs

The Wärtsilä 46DF is a 4-stroke, non-reversible, turbocharged and intercooled diesel enginewith direct fuel injection (twin pump).

460 mmCylinder bore

580 mmStroke

96.4 l/cylPiston displacement

2 inlet valves and 2 exhaust valvesNumber of valves

6, 7, 8 and 9 in-line; 12, 14 and 16 in V-form

Cylinder configuration

clockwise, counter-clockwise on requestDirection of rotation

600 rpmSpeed

11.6 m/sMean piston speed

1.1 Maximum continuous output

Table 1-1 Maximum continuos output

IMO Tier 2Cylinder configuration

bhpkW

93406870W 6L46DF

109008015W 7L46DF

124509160W 8L46DF

1401010305W 9L46DF

1868013740W 12V46DF

2179016030W 14V46DF

2491018320W 16V46DF

The mean effective pressure Pe can be calculated using the following formula:

where:

mean effective pressure [bar]Pe =

output per cylinder [kW]P =

engine speed [r/min]n =

cylinder diameter [mm]D =

length of piston stroke [mm]L =

operating cycle (4)c =

Wärtsilä 46DF Product Guide - a3 - 4 November 2016 1-1

1. Main Data and OutputsWärtsilä 46DF Product Guide

1.2 Output limitations in gas mode

1.2.1 Output limitations due to methane number

Fig 1-1 Output limitations due to methane number

Notes:

The dew point shall be calculated for the specificsite conditions. The minimum charge air temperat-ure shall be above the dew point, otherwise con-densation will occur in the charge air cooler.

Compensating a low methane number gas bylowering the receiver temperature below 45°C isnot allowed.

Compensating a higher charge air temperaturethan 45°C by a high methane number gas is notallowed.

The charge air temperature is approximately 5°Chigher than the charge air coolant temperature atrated load.

The engine can be optimized for a lower methanenumber but that will affect the performance.

1-2 Wärtsilä 46DF Product Guide - a3 - 4 November 2016

Wärtsilä 46DF Product Guide1. Main Data and Outputs

1.2.2 Output limitations due to gas feed pressure and lowerheating value

Fig 1-2 Output limitation factor due to gas feed pressure / LHV

Notes:

No compensation (uprating) of the engine outputis allowed, neither for gas feed pressure higherthan required in the graph above nor lower heatingvalue above 36 MJ/m3

N .

The above given values for gas feed pressure(absolute pressure) are at engine inlet. The pres-sure drop over the gas valve unit (GVU) is approx.80 kPa.

Values given in m3N are at 0°C and 101.3 kPa.

1.3 Reference conditionsThe output is available within a range of ambient conditions and coolant temperatures specifiedin the chapter Technical Data. The required fuel quality for maximum output is specified in thesection Fuel characteristics. For ambient conditions or fuel qualities outside the specification,the output may have to be reduced.

The specific fuel consumption is stated in the chapter Technical Data. The statement appliesto engines operating in ambient conditions according to ISO 3046-1:2002 (E).

100 kPatotal barometric pressure

25°Cair temperature

30%relative humidity

25°Ccharge air coolant temperature

Correction factors for the fuel oil consumption in other ambient conditions are given in standardISO 3046-1:2002.

1.4 Operation in inclined positionMax. inclination angles at which the engine will operate satisfactorily.



15°● Permanent athwart ship inclinations

22.5°● Temporary athwart ship inclinations

10°● Permanent fore-and-aft inclinations



1.5 Dimensions and weights

Fig 1-3 In-line engines (DAAR038987)

HE3HE1LE5LE5*LE4LE3LE3*LE2LE1LE1*Engine

14303255699292460-15206170895386706L46DF

14303255699292460-15206990977396357L46DF

1430344565829246018831520781010593103108L46DF

1430344565829246018831520863011413111309L46DF

Weight [ton]WE6WE5WE3WE2WE1HE6HE5HE4Engine

102330178014801940318565026056506L46DF

118330178014801940318565026056507L46DF

130398178014801940318575526056508L46DF

146398178014801940318575526056509L46DF

* Turbocharger at driving end

All dimensions in mm. The weights are dry weights of rigidly mounted engines without flywheel.

Table 1-2 Additional weights [ton]:

9L46DF8L46DF7L46DF6L46DFItem

1...21...21...21...2Flywheel

3333Flexible mounting (without limiters)



Fig 1-4 V-engines (DAAR038992)

HE3HE1LE5LE5*LE4LE3LE3*LE2LE1LE1*Engine

16203670-430460-19217600-1103612V46DF*

16203670684-4852043-760010375-12V46DF

16203670684-4852043-865011425-14V46DF

16203860689-4852347-970012687-16V46DF

Weight [ton]WE6WE5WE3WE2WE1HE6HE5HE4Engine

1847813225182022904555650302080012V46DF*

1847813225182022904555650302080012V46DF

2237813225182022904555650302080014V46DF

2358583225182022905174750311080016V46DF

* Turbocharger at driving end

All dimensions in mm. The weights are dry weights of rigidly mounted engines without flywheel.

Table 1-3 Additional weights [ton]:

16V46DF14V46DF12V46DFItem

1...21...21...2Flywheel

333Flexible mounting (without limiters)



2. Operating Ranges

2.1 Engine operating rangeBelow nominal speed the load must be limited according to the diagrams in this chapter inorder to maintain engine operating parameters within acceptable limits. Operation in theshaded area is permitted only temporarily during transients. Minimum speed is indicated inthe diagram, but project specific limitations may apply.

2.1.1 Controllable pitch propellersAn automatic load control system is required to protect the engine from overload. The loadcontrol reduces the propeller pitch automatically, when a pre-programmed load versus speedcurve (“engine limit curve”) is exceeded, overriding the combinator curve if necessary. Engineload is determined from measured shaft power and actual engine speed. The shaft powermeter is Wärtsilä supply.

The propulsion control must also include automatic limitation of the load increase rate.Maximum loading rates can be found later in this chapter.

The propeller efficiency is highest at design pitch. It is common practice to dimension thepropeller so that the specified ship speed is attained with design pitch, nominal engine speedand 85% output in the specified loading condition. The power demand from a possible shaftgenerator or PTO must be taken into account. The 15% margin is a provision for weatherconditions and fouling of hull and propeller. An additional engine margin can be applied formost economical operation of the engine, or to have reserve power.


2. Operating RangesWärtsilä 46DF Product Guide

Fig 2-1 Operating field for CP Propeller, 1145 kW/cyl, 600 rpm

Remarks: The maximum output may have to be reduced depending on gas properties andgas pressure, refer to section "Derating of output in gas mode". The permissible output willin such case be reduced with same percentage at all revolution speeds.

Restrictions for low load operation to be observed.

2.2 Loading capacityControlled load increase is essential for highly supercharged engines, because the turbochargerneeds time to accelerate before it can deliver the required amount of air. Sufficient time toachieve even temperature distribution in engine components must also be ensured. Dual fuelengines operating in gas mode require precise control of the air/fuel ratio, which makescontrolled load increase absolutely decisive for proper operation on gas fuel.

The loading ramp “preheated, normal gas” (see figures) can be used as the default loadingrate for both diesel and gas mode. If the control system has only one load increase ramp, thenthe ramp for a preheated engine must be used. The HT-water temperature in a preheatedengine must be at least 60ºC, preferably 70ºC, and the lubricating oil temperature must be atleast 40ºC.

The loading ramp “max. capacity gas” indicates the maximum capability of the engine in gasmode. Faster loading may result in alarms, knock and undesired trips to diesel. This ramp canalso be used as normal loading rate in diesel mode once the engine has attained normaloperating temperature.

The maximum loading rate “emergency diesel” is close to the maximum capability of theengine in diesel mode. It shall not be used as the normal loading rate in diesel mode.

Emergency loading may only be possible by activating an emergency function, which generatesvisual and audible alarms in the control room and on the bridge.


Wärtsilä 46DF Product Guide2. Operating Ranges

The load should always be applied gradually in normal operation. Acceptable load incrementsare smaller in gas mode than in diesel mode and also smaller at high load, which must betaken into account in applications with sudden load changes. The time between load incrementsmust be such that the maximum loading rate is not exceeded. In the case of electric powergeneration, the classification society shall be contacted at an early stage in the project regardingsystem specifications and engine loading capacity.

Electric generators must be capable of 10% overload. The maximum engine output is 110%in diesel mode and 100% in gas mode. Transfer to diesel mode takes place automatically incase of overload. Lower than specified methane number may also result in automatic transferto diesel when operating close to 100% output. Expected variations in gas fuel quality andmomentary load level must be taken into account to ensure that gas operation can bemaintained in normal operation.

2.2.1 Mechanical propulsion, controllable pitch propeller (CPP)

Fig 2-2 Maximum load increase rates for variable speed engines

The propulsion control must not permit faster load reduction than 20 s from 100% to 0%without automatic transfer to diesel first.



2.2.2 Constant speed applications

Fig 2-3 Maximum load increase rates for engines operating at nominal speed

The propulsion control and the power management system must not permit faster loadreduction than 20 s from 100% to 0% without automatic transfer to diesel first.

In electric propulsion applications loading ramps are implemented both in the propulsioncontrol and in the power management system, or in the engine speed control in caseisochronous load sharing is applied. When the load sharing is based on speed droop, it mustbe taken into account that the load increase rate of a recently connected generator is the sumof the load transfer performed by the power management system and the load increaseperformed by the propulsion control.

2.2.2.1 Maximum instant load stepsThe electrical system must be designed so that tripping of breakers can be safely handled.This requires that the engines are protected from load steps exceeding their maximum loadacceptance capability. If fast load shedding is complicated to implement or undesired, theinstant load step capacity can be increased with a fast acting signal that requests transfer todiesel mode.



Gas mode

Fig 2-4 Maximum instant load steps in % of MCR in gas mode

● Maximum step-wise load increases according to figure

● Steady-state frequency band ≤ 1.5 %

● Maximum speed drop 10 %

● Recovery time ≤ 10 s

● Maximum step-wise load reductions: 100-75-45-0%

Diesel mode

● Maximum step-wise load increase 33% of MCR

● Steady-state frequency band ≤ 1.0 %

● Maximum speed drop 10 %

● Recovery time ≤ 5 s

Start-up

A stand-by generator reaches nominal speed in 50-70 seconds after the start signal (checkof pilot fuel injection is always performed during a normal start).

With black-out start active nominal speed is reached in about 25 s (pilot fuel injection disabled).

The engine can be started with gas mode selected provided that the engine is preheated andthe air receiver temperature is at required level. It will then start on MDF and gas fuel will beused as soon as the pilot check is completed and the gas supply system is ready.

Start and stop on heavy fuel is not restricted.

2.3 Operation at low load and idlingAbsolute idling (declutched main engine, disconnected generator):

● Maximum 10 minutes if the engine is to be stopped after the idling. 3-5 minutes idlingbefore stop is recommended.



● Maximum 8 hours if the engine is to be loaded after the idling.

Operation below 20 % load on HFO or below 10 % load on MDF or gas:

● Maximum 100 hours continuous operation. At intervals of 100 operating hours the enginemust be loaded to min. 70% of the rated output for 1 hour.

● If operated longer than 30h in liquid fuel mode, the engine must be loaded to minimum70% of rated output for 1 hour before transfer to gas.

● Before operating below 10% in gas mode the engine must run above 10% load for at least10 minutes. It is however acceptable to change to gas mode directly after the engine hasreached nominal speed after the engine has started, provided that the charge air temperatureis above 55°C.

Operation above 20 % load on HFO or above 10 % load on MDF or gas:

● No restrictions.

2.4 Low air temperatureThe minimum inlet air temperature of 5°C applies, when the inlet air is taken from the engineroom.

Engines can run in colder conditions at high loads (suction air lower than 5°C) provided thatspecial provisions are considered to prevent too low HT-water temperature and T/C surge.

For start, idling and low load operations (Ch 2.3), suction air temperature shall be maintainedat 5°C.

If necessary, the preheating arrangement can be designed to heat the running engine (capacityto be checked).

For further guidelines, see chapter Combustion air system design.



3. Technical Data

3.1 IntroductionThis chapter contains technical data of the engine (heat balance, flows, pressures etc.) fordesign of ancillary systems. Further design criteria for external equipment and system layoutsare presented in the respective chapter.

Separate data is given for engines driving propellers “ME” and engines driving generators“DE”.

3.2 Wärtsilä 6L46DF

DEME

Wärtsilä 6L46DF Dieselmode

Gasmode

Dieselmode

Gasmode

11451145kWCylinder output

600600rpmEngine speed

68706870kWEngine output

2.382.38MPaMean effective pressure

Combustion air system (Note 1)

12.311.112.311.1kg/sFlow at 100% load

4545°CTemperature at turbocharger intake, max.

50455045°CTemperature after air cooler, nom. (TE 601)

Exhaust gas system (Note 2)

12.711.312.711.3kg/sFlow at 100% load

10.38.69.98.7kg/sFlow at 75% load

354354354354°CTemperature after turbocharger at 100% load(TE 517)


44kPaBackpressure, max.

902854902854mmCalculated exhaust diameter for 35 m/s

Heat balance at 100% load (Note 3)

11046901104696kWJacket water, HT-circuit

1836150618361506kWCharge air, HT-circuit

690606690606kWCharge air, LT-circuit

828468828468kWLubricating oil, LT-circuit

204198204198kWRadiation

Fuel consumption (Note 4)

-7440-7460kJ/kWhTotal energy consumption at 100% load

75407490kJ/kWhTotal energy consumption at 85% load



-7397-7413kJ/kWhFuel gas consumption at 100% load

74877441kJ/kWhFuel gas consumption at 85% load


3. Technical DataWärtsilä 46DF Product Guide

DEME


Gasmode

Dieselmode

Gasmode





1851.01861.0g/kWhFuel oil consumption at 100% load



1923.41853.4g/kWhFuel oil consumption 50% load

Fuel gas system (Note 5)

-517-517kPa (a)Gas pressure at engine inlet, min (PT901)

-517-517kPa (a)Gas pressure to Gas Valve unit, min

-0...60-0...60°CGas temperature before Gas Valve Unit

Fuel oil system

800±0800±0kPaPressure before injection pumps (PT 101)

7.27.2m3/hFuel oil flow to engine, approx

16...24-16...24-cStHFO viscosity before the engine

140-140-°CMax. HFO temperature before engine (TE 101)

2.02.0cStMDF viscosity, min.

4040°CMax. MDF temperature before engine (TE101)

4.5-4.5-kg/hLeak fuel quantity (HFO), clean fuel at 100%load

22.512.022.511.7kg/hLeak fuel quantity (MDF), clean fuel at 100%load

2...112...11cStPilot fuel (MDF) viscosity before the engine

400...800400...800kPaPilot fuel pressure at engine inlet (PT 112)

150150kPaPilot fuel outlet pressure, max

520520kg/hPilot fuel return flow at 100% load

Lubricating oil system

500500kPaPressure before bearings, nom. (PT 201)

800800kPaPressure after pump, max.

4040kPaSuction ability, including pipe loss, max.

8080kPaPriming pressure, nom. (PT 201)

5656°CTemperature before bearings, nom. (TE 201)

7575°CTemperature after engine, approx.

175191m3/hPump capacity (main), engine driven

158158m3/hPump capacity (main), electrically driven

130130m3/hOil flow through engine

35.0 / 35.035.0 / 35.0m3/hPriming pump capacity (50/60Hz)

1313m3Oil volume in separate system oil tank

0.50.5g/kWhOil consumption at 100% load, approx.

13501350l/minCrankcase ventilation flow rate at full load

4.24.2m3Crankcase volume

300300PaCrankcase ventilation backpressure, max.

8.5...9.58.5...9.5lOil volume in turning device


Wärtsilä 46DF Product Guide3. Technical Data

DEME


Gasmode

Dieselmode

Gasmode



1.71.7lOil volume in speed governor

HT cooling water system

250 + static250 + statickPaPressure at engine, after pump, nom. (PT 401)

530530kPaPressure at engine, after pump, max. (PT 401)

7474°CTemperature before cylinders, approx. (TE401)

9191°CTemperature after charge air cooler, nom.

150150m3/hCapacity of engine driven pump, nom.

100100kPaPressure drop over engine, total

150150kPaPressure drop in external system, max.

70...15070...150kPaPressure from expansion tank

1.01.0m3Water volume in engine

LT cooling water system

250+ static250+ statickPaPressure at engine, after pump, nom. (PT 471)


3838°CTemperature before engine, max. (TE 471)

2525°CTemperature before engine, min. (TE 471)


5050kPaPressure drop over charge air cooler



Starting air system (Note 6)

30003000kPaPressure, nom. (PT 301)

15001500kPaPressure at engine during start, min. (20 °C)

30003000kPaPressure, max. (PT 301)

18001800kPaLow pressure limit in starting air vessel

6.06.0Nm3Consumption per start at 20 °C (successfulstart)

7.07.0Nm3Consumption per start at 20 °C (withslowturn)

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 (ambient air temperature 25°C, LT-water 25°C). Flow tolerance 5% and temperature tolerance15°C.

Note 2

At ISO 15550 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Tolerance for cooling water heat10%, tolerance for radiation heat 30%. Fouling factors and a margin to be taken into account when dimensioning heatexchangers.

Note 3

According to ISO 15550, lower calorific value 42700 kJ/kg, with engine driven pumps (two cooling water + one lubricatingoil pumps). Tolerance 5%. The fuel consumption at 85 % load is guaranteed and the values at other loads are given forindication only.

Note 4

Fuel gas pressure given at LHV ≥ 36MJ/m³N. Required fuel gas pressure depends on fuel gas LHV and need to be increasedfor lower LHV's. Pressure drop in external fuel gas system to be considered. See chapter Fuel system for further inform-ation.

Note 5

At manual starting the consumption may be 2...3 times lower.Note 6



ME = Engine driving propeller, variable speed

DE = Diesel-Electric engine driving generator

Subject to revision without notice.




DEME


Gasmode

Dieselmode

Gasmode






14.312.914.312.9kg/sFlow at 100% load




14.813.214.813.2kg/sFlow at 100% load

12.010.011.610.2kg/sFlow at 75% load












----kJ/kWhTotal energy consumption at 100% load




----kJ/kWhFuel gas consumption at 100% load




----g/kWhFuel oil consumption at 100% load



----g/kWhFuel oil consumption 50% load





