Wartsila 31 User manual

PRODUCT GUIDE
Wärtsilä 31

© Copyright by WÄRTSILÄ FINLAND Oy
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Introduction
This Product Guide provides data and system proposals for the early design phase of marine
engine installations. For contracted projects specific instructions for planning the installation
are always delivered. Any data and information herein is subject to revision without notice.
UpdatesPublishedIssue
First version of Product Guide W3118.10.20161/2016
Wärtsilä, Marine Solutions
Vaasa, October 2016
Wärtsilä 31 Product Guide - a1 - 18 October 2016 iii
IntroductionWärtsilä 31 Product Guide

Table of contents
1-11. Main Data and Outputs .......................................................................................................................
1-11.1 Maximum continuous output .......................................................................................................
1-21.2 Reference conditions ...................................................................................................................
1-21.3 Operation in inclined position .....................................................................................................
1-31.4 Dimensions and weights .............................................................................................................
2-12. Operating Ranges ................................................................................................................................
2-12.1 Engine operating range ...............................................................................................................
2-22.2 Loading capacity .........................................................................................................................
2-42.3 Operation at low load and idling ..................................................................................................
2-42.4 Low air temperature ....................................................................................................................
3-13. Technical Data ......................................................................................................................................
3-13.1 Wärtsilä 8V31 ...............................................................................................................................
3-43.2 Wärtsilä 10V31 .............................................................................................................................
3-73.3 Wärtsilä 12V31 .............................................................................................................................
3-103.4 Wärtsilä 14V31 .............................................................................................................................
3-133.5 Wärtsilä 16V31 .............................................................................................................................
4-14. Description of the Engine ....................................................................................................................
4-14.1 Definitions ....................................................................................................................................
4-14.2 Main components and systems ..................................................................................................
4-54.3 Expected overhaul intervals and life times ..................................................................................
4-54.4 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 Oil System ....................................................................................................................................
6-16.1 Acceptable fuel characteristics ...................................................................................................
6-56.2 Internal fuel oil system .................................................................................................................
6-86.3 External fuel oil system ................................................................................................................
7-17. Lubricating Oil System ........................................................................................................................
7-17.1 Lubricating oil requirements ........................................................................................................
7-27.2 Internal lubricating oil system ......................................................................................................
7-57.3 External lubricating oil system .....................................................................................................
7-117.4 Crankcase ventilation system ......................................................................................................
7-137.5 Flushing instructions ....................................................................................................................
8-18. Compressed Air System ......................................................................................................................
8-18.1 Instrument air quality ...................................................................................................................
8-18.2 Internal compressed air system ..................................................................................................
8-38.3 External compressed air system .................................................................................................
iv Wärtsilä 31 Product Guide - a1 - 18 October 2016
Wärtsilä 31 Product GuideTable of contents

9-19. Cooling Water System .........................................................................................................................
9-19.1 Water quality ...............................................................................................................................
9-29.2 Internal cooling water system ......................................................................................................
9-89.3 External cooling water system ....................................................................................................
10-110. Exhaust Gas System ............................................................................................................................
10-110.1 Internal exhaust gas system ........................................................................................................
10-410.2 Exhaust gas outlet .......................................................................................................................
10-610.3 External exhaust gas system .......................................................................................................
11-111. Turbocharger Cleaning ........................................................................................................................
11-111.1 Turbine cleaning system ..............................................................................................................
11-211.2 Compressor cleaning system ......................................................................................................
12-112. Exhaust Emissions ...............................................................................................................................
12-112.1 Diesel engine exhaust components ............................................................................................
12-212.2 Marine exhaust emissions legislation ..........................................................................................
12-612.3 Methods to reduce exhaust emissions ........................................................................................
13-113. Automation System .............................................................................................................................
13-113.1 Technical data and system overview ...........................................................................................
13-513.2 Functions ....................................................................................................................................
13-713.3 Alarm and monitoring signals ......................................................................................................
13-713.4 Electrical consumers ...................................................................................................................
13-913.5 System requirements and guidelines for diesel-electric propulsion ............................................
14-114. Foundation ............................................................................................................................................
14-114.1 Steel structure design ..................................................................................................................
14-114.2 Mounting of main engines ...........................................................................................................
14-814.3 Mounting of generating sets ........................................................................................................
14-1014.4 Flexible pipe connections ............................................................................................................
15-115. Vibration and Noise ..............................................................................................................................
15-115.1 External forces and couples ........................................................................................................
15-215.2 Torque variations .........................................................................................................................
15-215.3 Mass moments of inertia .............................................................................................................
15-215.4 Air borne noise .............................................................................................................................
15-315.5 Exhaust noise ..............................................................................................................................
16-116. Power Transmission ............................................................................................................................
16-116.1 Flexible coupling ..........................................................................................................................
17-117. Engine Room Layout ...........................................................................................................................
17-117.1 Space requirements for maintenance .........................................................................................
17-117.2 Transportation and storage of spare parts and tools ..................................................................
17-217.3 Required deck area for service work ...........................................................................................
18-118. Transport Dimensions and Weights ...................................................................................................
18-118.1 Lifting of main engines ................................................................................................................
18-218.2 Lifting of generating sets .............................................................................................................
18-318.3 Engine components .....................................................................................................................
19-119. Product Guide Attachments ...............................................................................................................
20-120. ANNEX ...................................................................................................................................................
20-120.1 Unit conversion tables .................................................................................................................
20-220.2 Collection of drawing symbols used in drawings ........................................................................
Wärtsilä 31 Product Guide - a1 - 18 October 2016 v
Table of contentsWärtsilä 31 Product Guide

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1. Main Data and Outputs
The Wärtsilä 31 is a 4-stroke, non-reversible, turbocharged and intercooled diesel engine with
direct fuel injection.
310 mmCylinder bore ........................
430 mmStroke ...................................
2 inlet valves
2 exhaust valves
Number of valves .................
8, 10, 12, 14 and 16Cylinder configuration .........
50°V-angle .................................
Clockwise, counterclockwiseDirection of rotation .............
720, 750 rpmSpeed ...................................
10.32 - 10.75 m/sMean piston speed ...............
1.1 Maximum continuous output
Table 1-1 Rating table for Wärtsilä 31
Generating setsMain enginesCylinder
configuration 750 rpm720 rpm750 rpm
Generator [kVA]Engine [kW]Generator [kVA]Engine [kW][kW]
58564880566447204880W 8V31
73206100708059006100W 10V31
87847320849670807320W 12V31
102488540991282608540W 14V31
1171297601132894409760W 16V31
The mean effective pressure Pe can be calculated as follows:
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 31 Product Guide - a1 - 18 October 2016 1-1
1. Main Data and OutputsWärtsilä 31 Product Guide

1.2 Reference conditions
The output is available up to a charge air coolant temperature of max. 38°C and an air
temperature of max. 45°C. For higher temperatures, the output has to be reduced according
to the formula stated in ISO 3046-1:2002 (E).
The specific fuel oil consumption is stated in the chapter Technical data. The stated specific
fuel oil consumption applies to engines with engine driven pumps, operating in ambient
conditions according to ISO 15550:2002 (E). The ISO standard reference conditions are:
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 standard
ISO 3046-1:2002.
1.3 Operation in inclined position
Max. inclination angles at which the engine will operate satisfactorily.
Table 1-2 Inclination with Normal Oil Sump
15°
●Transverse inclination, permanent (list)
22.5°
●Transverse inclination, momentary (roll)
10°
●Longitudinal inclination, permanent (trim)
10°
●Longitudinal inclination, momentary (pitch)
NOTE
Inclination in all directions requires special arrangements.
1-2 Wärtsilä 31 Product Guide - a1 - 18 October 2016
Wärtsilä 31 Product Guide1. Main Data and Outputs

1.4 Dimensions and weights
1.4.1 Main engines
Fig 1-1 Main engine dimensions (DAAF336230)
LE4LE2HE3HE4WE1*WE1HE1*HE1LE1LE1*Engine
35035601496650311331133205320561146175W8V31
35042001496650311331133205320567546813W10V31
Weight
ton**
WE2WE3LE5LE5*WE6WE6*LE3LE3*WESEngine
56.71650115350050067-67167516751582W8V31
621650115350050067-67167516751585W10V31
Total length of engineLE1
Height from the crankshaft centerline to the highest pointHE1
Total width of the engineWE1
Height from the crankshaft centerline to the engine feetsHE4
Dimension from the crankshaft centerline to the bottom of the oil sump, when shallow oil
sump
HE3
Length of the engine blockLE2
Dimension from the end of the block to the end of the crankshaftLE4
Width of the oil sumpWE3
Width of the engine block at the engine feetWE2
Dimension from the center of the crankshaft to the outermost point of the engineWE5
Dimension from the engine block to the outermost point in turbocharger endLE3
Dimension from the center of the crankshaft to the centre of the exhaust outletWE6
Dimension from the end of the engine block to the centre of the exhaust gas outletLE5
* Turbocharger at flywheel end
** Weight with liquids (wet sump) but without flywheel
All dimensions in mm.
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1. Main Data and OutputsWärtsilä 31 Product Guide

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