1.
Main Data and Outputs
1.1
Technical main data
The Wärtsilä 34DF is a 4-stroke, non-reversible, turbocharged and inter-cooled dual fuel engine with direct
injection of liquid fuel and indirect injection of gas fuel. The engine can be operated in gas mode or in
diesel mode.
340 mm
Cylinder bore ..............................
400 mm
Stroke ..........................................
36.3 l/cyl
Piston displacement ...................
2 inlet valves and 2 exhaust valves
Number of valves ........................
6 and 9 in-line; 12 and 16 in V-form
Cylinder configuration .................
clockwise, counterclockwise on request
Direction of rotation ....................
720, 750 rpm
Speed ..........................................
9.6, 10.0 m/s
Mean piston speed .....................
1.2
Maximum continuous output
Table 1.1 Rating table for Wärtsilä 34DF
Generating sets
Main engines
750 rpm
Cylinder
configuration
750 rpm
720 rpm
Generator [kVA]
Engine [kW]
Generator [kVA]
Engine [kW]
Engine [kW]
3240
2700
3130
2610
2700
Wärtsilä 6L34DF
4860
4050
4700
3915
4050
Wärtsilä 9L34DF
6480
5400
6260
5220
5400
Wärtsilä 12V34DF
8640
7200
8350
6960
7200
Wärtsilä 16V34DF
The mean effective pressure P
e
can be calculated using the following formula:
where:
mean effective pressure [bar]
P
e
=
output per cylinder [kW]
P =
engine speed [r/min]
n =
cylinder diameter [mm]
D =
length of piston stroke [mm]
L =
operating cycle (4)
c =
Product Guide Wärtsilä 34DF - 3/2012
1
Product Guide
1. Main Data and Outputs
