XP ISO/TS 11819-3
Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 3 : reference tyres
This document specifies two tyres intended to serve as reference tyres when using the close-proximity (CPX) method specified in ISO 11819-2.The CPX method is a method for evaluating different road surfaces with respect to their influence on traffic noise, under conditions when tyre/road noise dominates. This method ideally requires the use of standardized tyres, which have noise characteristics that are broadly representative of the effect of road surfaces on the noise emission of passenger car and heavy vehicle tyres. However, such tyres are not specified in ISO 11819-2. This document serves to specify these standardized tyres.
This document specifies two tyres intended to serve as reference tyres when using the close-proximity (CPX) method specified in ISO 11819-2.
The CPX method is a method for evaluating different road surfaces with respect to their influence on traffic noise, under conditions when tyre/road noise dominates. This method ideally requires the use of standardized tyres, which have noise characteristics that are broadly representative of the effect of road surfaces on the noise emission of passenger car and heavy vehicle tyres. However, such tyres are not specified in ISO 11819-2. This document serves to specify these standardized tyres.
ISO/TS 11819-3:2017 specifies two tyres intended to serve as reference tyres when using the close-proximity (CPX) method specified in ISO 11819-2. The CPX method is a method for evaluating different road surfaces with respect to their influence on traffic noise, under conditions when tyre/road noise dominates. This method ideally requires the use of standardized tyres, which have noise characteristics that are broadly representative of the effect of road surfaces on the noise emission of passenger car and heavy vehicle tyres. However, such tyres are not specified in ISO 11819-2. This document serves to specify these standardized tyres.
- Foreword
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1 Scope
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2 Normative references
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3 Terms and definitions
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4 General principles
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5 Reference tyres
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6 Test wheel and tyre mounting
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7 Tyre run-in
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8 Tyre load and inflation
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9 Correction for the influence of rubber hardness on CPX levels
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10 Correction for the influence of temperature on CPX levels
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11 Measurement uncertainty assessment according to ISO/IEC Guide 98-3
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12 Documentation
- Annexe Annex A (normative) Measurement of rubber hardness
- Annexe Annex B (informative) Storage and preservation of tyres
- Annexe Annex C (informative) Availability of the reference tyres
- Annexe Annex D (informative) Selection of test tyres (market versus reference tyres)
- Bibliography
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