Passenger cars. Power unit and tyre-road noise, driving behaviour: what are the stakes?
LELONG ; MICHELET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
LELONG ; MICHELET
Résumé / Abstract
The noise emission values for single vehicles defined in the French 'Guide du Bruit des Transports Terrestres' result from measurements and data analyses taken between 1973 and 1977. To update these values (which have been maintained in prediction software used today), pass-by noise of passenger cars has been measured on a test track under various running conditions (acceleration /deceleration, constant speed). After a brief description of the experimental disposition, this paper presents the results obtained with various-motorized vehicles (gas, diesel, hybrid and electric). At low speed (< 50 kmph), it appears that the influence of the motorization on emitted noise can reach 5 dB. The rate of acceleration directly related to the driving behaviour - is another important parameter greatly affecting the emitted noise. At high speed, for the road surface of which the test track is fitted, the characteristics of the tyres are not so significant: their influence does not exceed 3 dB.
