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Published in:
2019 | OriginalPaper | Chapter
The impact of pass-by noise legislation on the design of exhaust systems
Authors : Jan Krüger, Peter Wink, Maike Werner
Published in: 19. Internationales Stuttgarter Symposium
Publisher: Springer Fachmedien Wiesbaden
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In all major markets, the legislation on emissions (CO2, NOx, and PM) has been changed drastically and limit values have been lowered over the last years and will be even lower in the near future. Moreover, the new pass-by noise rules require more testing e.g. for additional sound emissions provisions (ASEP) and limit values are more stringent than ever according to R51.03, particularly with the phase coming into force in 2024. Besides the tire noise, the powertrain and here in particular the exhaust tailpipe noise is nowadays the main contributor to pass-by noise.