E-450-ATF240 CNG Powered

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Exterior Noise Test

Stationary

Date : 2012-05-25
Personnel : B.L., T.S. & J.S.
Temperature (°F) : 71 Humidity (%) : 73
Wind Speed (mph) : 9 Wind Direction : SSW
Barometric Pressure (in.Hg) : 30.14
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by B.L.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 39.7

Accessories and Air Conditioning ON
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 600 54.7 55.4
High Idle 1500 59.2 60.3
Wide Open Throttle 3500 68.5 68.6

Accessories and Air Conditioning OFF
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 600 43.7 45.7
High Idle 1500 54.6 56.5
Wide Open Throttle 3500 66.5 68.4