16.2 Torque variations
Table 16.2 Torque variation at 100% load
M
X
[kNm]
Frequency
[Hz]
M
X
[kNm]
Frequency
[Hz]
M
X
[kNm]
Frequency
[Hz]
Speed
[rpm]
Engine
5
5
108
112.5
17
17
72
75
23
20
36
37.5
720
750
W 6L34DF
3
3
162
168.75
8
8
108
113
47
47
54
56.25
720
750
W 9L34DF
5
5
108
112.5
27
27
72
75
9
9
36
37.5
720
750
W 12V34DF
3
3
144
150
16
16
96
100
34
34
48
50
720
750
W 16V34DF
16.3 Mass moments of inertia
The mass-moments of inertia of the main engines (including flywheel) are typically as follows:
J [kgm²]
Engine
440...490
W 6L34DF
640...660
W 9L34DF
700...780
W 12V34DF
840...930
W 16V34DF
16.4 Air borne noise
The airborne noise of the engine is measured as a sound power level according to ISO 9614-2. The results
are presented with A-weighing in octave bands, reference level 1 pW.
Figure 16.2
Typical sound power level for engine noise, W L34DF
Product Guide Wärtsilä 34DF - 3/2012
143
Product Guide
16. Vibration and Noise
