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BS ISO 362-1:2022 – TC:2023 Edition

BS ISO 362-1:2022 – TC:2023 Edition

$280.87

Tracked Changes. Acoustics. Engineering method for measurement of noise emitted by accelerating road vehicles – M and N categories

Published By Publication Date Number of Pages
BSI 2023 208
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PDF Catalog

PDF Pages PDF Title
128 National foreword
133 Foreword
134 Introduction
135 1 Scope
2 Normative references
136 3 Terms and definitions
3.1 Vehicle mass
138 3.4 Vehicle categories
141 4 Symbols, terms and abbreviated terms
144 5 Specification of the acceleration for vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg and of category N1
5.1 General
145 5.2 Calculation of acceleration
5.2.1 Calculation procedure for vehicles with manual transmission, automatic transmission, adaptive transmission, and continuously variable transmission (CVT) tested with locked gear ratios
5.2.2 Calculation procedure for vehicles with automatic transmission, adaptive transmission, and CVT tested with non-locked gear ratios
146 5.3 Calculation of the target acceleration
5.4 Calculation of the reference acceleration
147 5.5 Partial power factor kP
6 Instrumentation
6.1 Instruments for acoustical measurement
6.1.1 General
6.1.2 Calibration
6.1.3 Conformity with requirements
148 6.2 Instrumentation for speed measurements
6.3 Meteorological instrumentation
7 Acoustical environment, meteorological conditions, and background noise
7.1 Test site
150 7.2 Meteorological conditions
7.3 Background noise
151 8 Test procedures
8.1 Microphone positions
8.2 Conditions of the vehicle
8.2.1 General conditions
8.2.2 Test mass of the vehicle
155 8.2.3 Tyre selection and condition
8.2.4 Calculation of total engine power
156 8.2.5 Battery state of charge
8.2.6 Additional sound emitting devices
8.2.7 Vehicle cooling fans or cooling systems
8.3 Operating conditions
8.3.1 Vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg and category N1
160 8.3.2 Vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg, and categories M3, N2 and N3
165 8.4 Measurement readings and reported values
8.4.1 General
8.4.2 Data compilation
166 8.4.3 Vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg and category N1
8.4.4 Vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg and categories M3, N2, and N3
167 8.5 Measurement uncertainty
168 9 Test report
169 Annex A (informative) Technical background for development of vehicle noise test procedure based on in-use operation in urban conditions
189 Annex B (informative) Measurement uncertainty — Framework for analysis according to ISO/IEC Guide 98‑3
198 Annex C (informative) Flowchart of the procedure for categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg and category N1
203 Annex D (informative) Flowchart for vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg and categories M3, N2, and N3 with locked gears
204 Annex E (informative) Flowchart for vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg and categories M3, N2, and N3 with non-locked gears
206 Annex F (informative) Flowchart for vehicles of category M2 having a maximum authorized mass exceeding 3 500 kg and categories M3, N2, and N3 with no rotational engine speed available
207 Bibliography

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BS ISO 362-1:2022 - TC
$280.87