GB/T 14365-2017: Acoustics -- Measurements of sound pressure level emitted by stationary road vehicles

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Scope

This Standard specifies a test method, required environment and instrumentation for
measuring the exterior sound pressure levels from road vehicles under stationary
conditions, providing a continuous measure of the sound pressure level over a range
of engine speeds. This Standard applies only to road vehicles of categories L, M and
N equipped with internal combustion engines.
This Standard provides a simple and easy measurement method that can measure the
sound pressure level of reproducibility noise under the running conditions of the vehicle.
The absence of combustion operation when the vehicle is stationary is outside the
scope of this Standard.
This Standard specifies that, when the vehicle is stationary, it is applicable to the
following range of A-weighted sound pressure level reproducibility measurement
method.
⎯ type approval measurements of vehicle;
⎯ measurements at the manufacturing stage;
⎯ measurements at official testing stations;
⎯ measurements at roadside testing.
This Standard is not applicable to measuring the exhaust noise of the engine under
realistic loads; nor is it applicable to check whether the exhaust noise limits of various
categories of vehicles are up to standard.
Technical background information is given in Appendix A.

Basic Data

Standard ID	GB/T 14365-2017 (GB/T14365-2017)
Description (Translated English)	Acoustics -- Measurements of sound pressure level emitted by stationary road vehicles
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	18,183
Date of Issue	2017-12-29
Date of Implementation	2018-04-01
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China