16.5 Air borne noise
The airborne noise from the engine is measured as a sound power level according to ISO
3746. The results are presented with A-weighting in octave bands, reference level 1 pW. The
values are applicable with an intake air filter on the turbocharger and 1m from the engine. 90%
of all measured noise levels are below the values in the graphs. The values presented in the
graphs below are typical values, cylinder specific graphs are included in the Installation Planning
Instructions (IPI) delivered for all contracted projects.
Fig 16-3 Typical sound power levels of engine noise, W6L46DF
DBAD209883 16-5
16. Vibration and NoiseWärtsilä 46DF Product Guide
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