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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. This 01/2019 issue

replaces all previous issues of the Wärtsilä 31DF Project Guides.

Wärtsilä, Marine Solutions

Vaasa, March 2019

DBAE248994 iii

IntroductionWärtsilä 31DF Product Guide

Default Chapter5
- Table of Contents5
1 Main Data and Outputs9
- Maximum Continuous Output9
- Reference Conditions10
- Operation in Inclined Position (Only for Marine Solutions Engines)10
- Dimensions and Weights11
2 Operating Ranges15
- Engine Operating Range15
- Loading Capacity16
- Low Load Operation22
- Low Air Temperature24
3 Technical Data25
- Introduction25
- Wärtsilä 8V31DF27
- Wärtsilä 10V31DF35
- Wärtsilä 12V31DF43
- Wärtsilä 14V31DF51
- Wärtsilä 16V31DF59
4 Description of the Engine67
- Definitions67
- Main Components and Systems67
- Time between Inspection or Overhaul & Expected Life Time72
- Engine Storage73
5 Piping Design, Treatment and Installation75
- Pipe Dimensions75
- Trace Heating76
- Pressure Class76
- Pipe Class77
- Insulation78
- Local Gauges78
- Cleaning Procedures78
- Flexible Pipe Connections80
- Clamping of Pipes82
6 Fuel Oil System85
- Acceptable Fuel Characteristics85
- Operating Principles93
- Fuel Gas System94
- External Fuel Oil System102
7 Lubricating Oil System123
- Lubricating Oil Requirements123
- External Lubricating Oil System124
- Crankcase Ventilation System130
- Flushing Instructions132
8 Compressed Air System135
- Instrument Air Quality135
- External Compressed Air System135
9 Cooling Water System139
- Water Quality139
- External Cooling Water System140
10 Combustion Air System151
- Engine Room Ventilation151
- Combustion Air System Design152
11 Exhaust Gas System155
- Exhaust Gas Outlet155
- External Exhaust Gas System157
12 Turbocharger Cleaning165
- Turbine Cleaning System165
- Compressor Cleaning System166
13 Exhaust Emissions167
- Dual Fuel Engine Exhaust Components167
- Marine Exhaust Emissions Legislation167
- Methods to Reduce Exhaust Emissions167
14 Automation System169
- Technical Data and System Overview169
- Functions175
- Alarm and Monitoring Signals179
- Electrical Consumers179
- System Requirements and Guidelines for Diesel-Electric Propulsion181
15 Foundation183
- Steel Structure Design183
- Mounting of Main Engines183
- Mounting of Generating Sets186
- Flexible Pipe Connections187
16 Vibration and Noise189
- External Forces & Couples189
- Mass Moments of Inertia192
- Air Borne Noise192
- Exhaust Noise192
17 Power Transmission193
- Flexible Coupling193
- Torque Flange193
- Clutch193
- Shaft Locking Device193
- Input Data for Torsional Vibration Calculations194
- Turning Gear195
18 Engine Room Layout197
- Crankshaft Distances197
- Space Requirements for Maintenance201
- Transportation and Storage of Spare Parts and Tools201
- Required Deck Area for Service Work201
19 Transport Dimensions and Weights205
- Lifting of Main Engines205
- Lifting of Generating Sets206
- Engine Components207

Brand	Wartsila
Model	?31DF Series
Category	Engine
Language	English

Wartsila ?31DF Series User Manual

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Wartsila ?31DF Series Specifications

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