MTU MW15406/17E Operating Instructions Manual page 54

Acoustics
Number of cylinders
Exhaust noise, unsilenced - BL (free-field
sound pressure level Lp, 1m distance, ISO
6798, +3dB(A) tolerance)
Engine surface noise with attenuated in-
take noise (filter) - BL (free-field sound
power level Lp, 1 m distance, ISO 6798,
+2dB(A) tolerance)
54 | Technical Data | MW15406/17E 2014-05
8
R dB(A) 104
R dB(A) 99
8 8
104 104 104
99 99 99
8