GB/T 40578-2021
ActiveMeasurement methods for noise emitted by light-duty vehicles in multiple driving mode conditions
轻型汽车多工况行驶车外噪声测量方法
Application Summary AI generated
This standard specifies measurement methods for exterior noise emitted by light-duty vehicles under multiple driving modes, including acceleration, constant speed, and deceleration conditions. It is applied in the automotive industry for type approval testing and production conformity assessments of passenger cars and light commercial vehicles in China. The standard ensures consistent noise evaluation across varied real-world driving scenarios, supporting regulatory compliance and environmental noise control.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.