Wartsila ?31DF Series User Manual

3. Technical Data
3.1 Introduction
This chapter contains technical data of the engine (heat balance, flows, pressures etc.) for
design of auxiliary systems. Further design criteria for external equipment and system layouts
are presented in the respective chapter.
3.1.1 Engine driven pumps
The fuel consumption stated in the technical data tables is with engine driven pumps. The
increase in fuel consumption with engine driven pumps is given in the table below; correction
in g/kWh (Diesel mode) and or kJ/kWh (Gas mode).
3.1.1.1 Diesel mode
Table 3-1 Constant speed engines (DE, CPP, Aux), 750/720rpm, MDF/HFO
Engine load [%]Engine driven
pumps
507585100
-2.6-1.6-1.4-1.2Lube oil
-1.0-0.7-0.6-0.5LT Water
-1.0-0.7-0.6-0.5HT Water
Table 3-2 Variable speed engines (CPP), 750rpm, MDF/HFO
Engine load [%]Engine driven
pumps
507585100
-1.4-1.4-1.3-1.4Lube oil
-0.5-0.5-0.5-0.5LT Water
-0.5-0.5-0.5-0.5HT Water
3.1.1.2 Gas mode
Table 3-3 Constant speed engines (DE, CPP, Aux), 750/720rpm, MDF/HFO
Engine load [%]Engine driven
pumps
507585100
-108.6-68.6-60.0-50.5Lube oil
-44.8-27.6-24.8-21.0LT Water
-44.8-27.6-24.8-21.0HT Water
DBAE248994 3-1
3. Technical DataWärtsilä 31DF Product Guide

Wartsila ?31DF Series Specifications

General

Brand	Wartsila
Model	?31DF Series
Category	Engine
Language	English