Aero Elite Ford 550 Super Duty Chassis-Diesel Engine

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Exterior Noise Test

Stationary

Date : 2011-11-07
Personnel : G.C., T.S., B.L. & S.C.
Temperature (°F) : 63 Humidity (%) : 41
Wind Speed (mph) : 7 Wind Direction : SW
Barometric Pressure (in.Hg) : 30.28
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 S.C.
Initial Sound Level Meter Calibration: true checked by S.C.
Exterior Ambient Noise Level dB(A): 46.5

Accessories and Air Conditioning ON
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 600 50.5 50.1
High Idle
Wide Open Throttle 3500 72.4 72.3

Accessories and Air Conditioning OFF
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 602 49.9 50.6
High Idle
Wide Open Throttle 3495 72.5 72.3