ISO/TS 13471-2:2022 PDF

Acoustics — Temperature influence on tyre/road noise measurement — Part 2: Correction for temperature when testing with the pass-by methods

Название (английский):

ISO/TS 13471-2:2022

Acoustics — Temperature influence on tyre/road noise measurement — Part 2: Correction for temperature when testing with the pass-by methods

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 30 августа 2022 г.
Издание:: ISO TS 13471 edition 1 version 1
ICS:: 17.140.30

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Описание (английский):

This document specifies correction procedures for the effect of temperature on vehicle noise emission, as influenced by the tyre/road noise contribution. Temperatures considered are road and ambient air temperatures. The noise emission for which this document is applicable is measured by means of ISO 11819-1, or similar methods such as the American methods SIP and CTIM specified in References [3][4]. It is also applicable to other pass-by measurements conducted without acceleration, such as when testing tyres and vehicles on test tracks with ISO 10844[1] reference surfaces; however, given that tyre/road noise is dominant. Measurement results obtained at a certain temperature, which may vary over a wide range, are normalized to a designated reference temperature (20 °C) using a correction procedure specified in this document.

Технические детали

Технический комитет: ISO/TC 43/SC 1 - Noise
SKU: ISO/TS 13471-2:2022

Abstract

Overview

ISO/TS 13471-2:2022 provides a standardized procedure to correct the influence of temperature on vehicle noise measurements where tyre/road noise is a dominant component. It applies to pass-by testing methods (for example, the statistical pass-by (SPB) method in ISO 11819-1) and similar approaches (SIP, CTIM), and to pass-by tests on reference test tracks (ISO 10844). Measurement results taken at varying ambient and road temperatures are normalized to a reference temperature (20 °C) using the correction procedure specified in this Technical Specification.

Key Topics

Scope and applicability: Corrections for tyre/road noise contribution in pass-by methods and non-accelerating track tests; distinction between vehicle categories and tyre classes.
Temperatures considered: Ambient air temperature, road surface temperature, and optionally tyre temperature.
Normalization target: Convert measured noise to the reference temperature 20 °C.
Correction methodology:
- Temperature correction terms for tyre classes and vehicle groups.
- Temperature coefficients and spectral correction options.
- Compensation for mixed power unit noise where applicable.
Measurement procedures:
- Guidance on temperature measurement equipment and sensor placement.
- Instructions for consistent air and (optional) road/tyre temperature measurement.
Validity and limits:
- Defined temperature ranges within which the correction is valid (noting typical pass-by methods commonly permit measurements across a broad range, e.g., ~5 °C to 35 °C).
Uncertainty and reporting:
- Uncertainty assessment in accordance with ISO/IEC Guide 98‑3 (GUM).
- Reporting requirements and recommended test report content.
Annexes: Informative material on road surface types and selection of normalization temperature.

Applications

Vehicle and tyre manufacturers: Normalize pass-by noise results for design, comparison, type approval, and labelling.
Test laboratories and certification bodies: Apply temperature corrections to reduce measurement variability and comply with regulatory test procedures.
Regulators and policymakers: Evaluate noise emissions consistently across climates and test conditions.
Acoustical consultants and researchers: Improve comparability of field and track measurements by accounting for temperature-driven variability.

Related Standards (if applicable)

ISO 11819-1 - Statistical pass-by (SPB) method
ISO 10844 - Reference surfaces for tyre/vehicle tests
ISO/TS 13471-1 - (related CPX method guidance)
ISO/IEC Guide 98-3 - Guide to the expression of uncertainty in measurement (GUM)

Keywords: ISO/TS 13471-2:2022, tyre/road noise, temperature correction, pass-by methods, ISO 11819-1, SPB, vehicle noise emission, road surface temperature, reference temperature 20 °C, measurement uncertainty.

Overview

Key Topics

Scope and applicability: Corrections for tyre/road noise contribution in pass-by methods and non-accelerating track tests; distinction between vehicle categories and tyre classes.
Temperatures considered: Ambient air temperature, road surface temperature, and optionally tyre temperature.
Normalization target: Convert measured noise to the reference temperature 20 °C.
Correction methodology:
- Temperature correction terms for tyre classes and vehicle groups.
- Temperature coefficients and spectral correction options.
- Compensation for mixed power unit noise where applicable.
Measurement procedures:
- Guidance on temperature measurement equipment and sensor placement.
- Instructions for consistent air and (optional) road/tyre temperature measurement.
Validity and limits:
- Defined temperature ranges within which the correction is valid (noting typical pass-by methods commonly permit measurements across a broad range, e.g., ~5 °C to 35 °C).
Uncertainty and reporting:
- Uncertainty assessment in accordance with ISO/IEC Guide 98‑3 (GUM).
- Reporting requirements and recommended test report content.
Annexes: Informative material on road surface types and selection of normalization temperature.

Applications

Vehicle and tyre manufacturers: Normalize pass-by noise results for design, comparison, type approval, and labelling.
Test laboratories and certification bodies: Apply temperature corrections to reduce measurement variability and comply with regulatory test procedures.
Regulators and policymakers: Evaluate noise emissions consistently across climates and test conditions.
Acoustical consultants and researchers: Improve comparability of field and track measurements by accounting for temperature-driven variability.

Related Standards (if applicable)

ISO 11819-1 - Statistical pass-by (SPB) method
ISO 10844 - Reference surfaces for tyre/vehicle tests
ISO/TS 13471-1 - (related CPX method guidance)
ISO/IEC Guide 98-3 - Guide to the expression of uncertainty in measurement (GUM)

ISO/TS 13471-2:2022 PDF

Технические детали

Abstract

Overview

Key Topics

Applications

Related Standards (if applicable)

Похожие стандарты

Abstract

Overview

Key Topics

Applications

Related Standards (if applicable)

Похожие стандарты

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