Hybrid Approach for the Assessment of Paths in Pass by Manoeuver 2020-01-1550
Current vehicle regulations demand for a challenging decrease in the overall exterior noise as a
benefit for the health of citizens and road users. New limits have been implemented in UN
R51.03 (based on ISO 362-1:2015) to reduce the emitted noise both at constant speed and in
full load so as to cover most of the real urban driving conditions. In order to achieve those
targets the carmakers have to refine the trim of their vehicle and an experimental approach can
take place too late. This paper shows a method for the pass by noise simulation exploiting the
numerical transfer functions and a library of experimentally characterized sources with the aim
to reduce the noise and find out a better tradeoff between costs and effectiveness of the
modifications. Moreover a simple software tool for the treatment of the data and to ease the
workflow has been created and used for the rank assessment of the different paths.
Marco Danti, Massimo Biasiolo, Domenico Amodeo, Gianluca Di Nenno
Centro Ricerche Fiat S.C.p.A., Centro RIcerche Fiat S.C.p.A., FCA Italy
11th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
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