Engine A-weighted Sound Power Level in Octave Frequency Band [dB, ref. 1pW]
Total
8000
4000
2000
1000
500
250
125
[Hz]
125
114
116
119
121
115
110
100
8V
125
114
118
121
118
115
107
99
10V
15.5
Exhaust noise
The results represent typical exhaust gas free field linear sound power levels at engine full
load and nominal speed.
Exhaust Gas Sound Power Level in Octave Frequency Band [dB, ref. 1pW]
Total
4000
2000
1000
500
250
125
63
32
[Hz]
149
118
120
123
126
128
129
147
144
8V
150
121
125
127
131
133
134
140
149
10V
Wärtsilä 31 Product Guide - a1 - 18 October 2016
15-3
15. Vibration and Noise
Wärtsilä 31 Product Guide
Summary of Contents for 31
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