Sound Pressure Level; Noise Emission At 1200 Rpm - Kohler SFGLD480 Operation & Maintenance Manual

1. INTRODUCTION
The purpose of this information is to define the noise emission levels in the Kohler gas engine exhausts.
2. ACOUSTIC DEFINITIONS
Decibel
Logarithmic unit that relates an energy magnitude with another, similar, magnitude accepted as a reference.
Sound power
Energy that a sound source emits to the surrounding medium by time unit.
Sound pressure
Atmospheric pressure variations at one point, produced by the propagation of a sound wave.

3. NOISE EMISSION AT 1200 RPM

The following table shows the sound pressure distribution in octave frequency bands and the total sound level
with the engine running continuously at 1200 rpm and at 100% power.
F/SFGLD ENGINES
63
125
250
500
1000
2000
4000
LpA,  dB(A)
HGM ENGINES
63
125
250
500
1000
2000
4000
LpA,  dB(A)
PRODUCT INFORMATION
IC-G-D-00-043e

SOUND PRESSURE LEVEL

IN THE GAS ENGINES EXHAUST AREA
180 240
94 96
106 109
106 113
112 115
108 111
109 113
109 112
117 120
560
99
109
115
116
114
114
116
122
1.21
INDEX DATE
F
July 2016
O&M_2.002211.810_A_10_2016
360 480
96 94
109 111
113 112
115 119
112 116
113 117
114 116
121 124
Dep. 2
560
98
109
112
117
113
113
114
121
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