T24

Collins Bus Corp. d.b.a. World Trans Pdf Download PDF Report

Exterior Noise Test

Stationary

Date : 2016-09-28
Personnel : T.S., S.R. & S.B.
Temperature (°F) : 70 Humidity (%) : 52
Wind Speed (mph) : 10 Wind Direction : ESE
Barometric Pressure (in.Hg) : 30.0
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
Initial Sound Level Meter Calibration: true checked by
Exterior Ambient Noise Level dB(A): 44.8

Accessories and Air Conditioning ON
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 800 55.9 63.2
High Idle
Wide Open Throttle 4185 74.8 74.9

Accessories and Air Conditioning OFF
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 800 48.0 51.1
High Idle
Wide Open Throttle 4200 74.1 75.0