🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS ISO 362-3:2022 – TC 2023

BS ISO 362-3:2022 – TC 2023

$280.87

Tracked Changes. Acoustics. Measurement of noise emitted by accelerating road vehicles. Engineering method – Indoor testing M and N categories

Published By Publication Date Number of Pages
BSI 2023 178
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

PDF Catalog

PDF Pages PDF Title
1 30463396
105 A-30419796
106 National foreword
111 Foreword
112 Introduction
113 1 Scope
2 Normative references
114 3 Terms and definitions
4 Symbols and abbreviated terms
116 5 Acceleration for vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg, and of category N1
5.1 Applicability and conditions
117 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
5.3 Calculation of the target acceleration
5.4 Calculation of the reference acceleration
5.5 Partial power factor, kP
118 6 Instrumentation
6.1 Instruments for acoustical measurement
6.1.1 General
6.1.2 Calibration
119 6.2 Conformity with requirements
6.3 Instrumentation for speed measurement
6.4 Meteorological instrumentation
7 Test room requirements
7.1 General
120 7.2 Test room dimensions
122 7.2.1 Test room dimensions for measurements where the length of the test track is greater than 20m
123 7.3 Acoustical qualification of the room
7.3.1 General
7.3.2 Validation of free-field conditions of the microphone array
126 7.3.3 Qualification procedure
127 7.4 Condition of the floor
7.5 Cooling, ventilation, air temperature, exhaust gas management
7.6 Background noise
128 8 Dynamometer requirements
8.1 Type of texture of the rollers
8.2 Diameter of the rollers
8.3 Reproducibility of the pass-by dynamics
129 8.4 Single-axle or multi-axle operation
8.5 Noise emission limit under operating conditions produced by the dynamometer rollers
9 Test procedures
9.1 General
9.2 Microphone array — Hardware and software
130 9.3 Vehicle fixing system
9.4 Conditions of the vehicle
9.4.1 General conditions
9.4.2 Test mass of the vehicle
131 9.4.3 Tyre selection and tyre condition
9.4.4 Calculation of total engine power
9.4.5 Battery state of charge
9.4.6 Additional sound emitting devices
9.4.7 Vehicle cooling fans or cooling systems
132 9.5 Operating conditions
9.5.1 Vehicles of categories M1, M2 having a maximum authorized mass not exceeding 3 500 kg, and N1
133 9.5.2 Vehicles of categories M2 having a maximum authorized mass exceeding 3 500 kg, M3, N2 and N3
9.6 Measurement readings and reported values
9.6.1 General
134 9.6.2 Data compilation
9.6.3 Vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg, and of category N1
9.6.4 Vehicles of categories M2 having a maximum authorized mass exceeding 3 500 kg, M3, N2, and N3
9.7 Measurement uncertainty
135 10 Test methods and test report
10.1 General
10.2 Variant A
10.2.1 General
136 10.2.2 Power train noise
10.2.3 Tyre/road noise
10.2.4 Calculation of the total vehicle noise using variant A
10.3 Test report
138 Annex A (normative) Validation of method
142 Annex B (normative) Procedure for measurement, evaluation, and calculation of tyre/road noise when using variant A
159 Annex C (informative) Procedure for description of tyre torque influence by an energetic model
164 Annex D (informative) Procedure for measurement, evaluation, and calculation of tyre/road noise when using variant B
166 Annex E (informative) Measurement uncertainty — Framework for analysis according to ISO/IEC Guide 98‑3
174 Annex F (informative) Room length deviation from recommendation
176 Bibliography

Related products

BS ISO 362-3:2022 - TC 2023
$280.87