Optimization of Electric Vehicle Exterior Noise
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Acoustic Vehicle Alert Systems (AVAS) will be integrated into silent electrified vehicles to increase detectability and pedestrian safety. FEV uses its interior and exterior noise simulation software to assist the integration of AVAS into the vehicle.
AVAS to Increase Pedestrian Safety
Without the noise of a running combustion engine, electrically driven vehicles are very quiet, sometimes even too silent to be noticed by pedestrians. Especially at speeds below 30 km/h, the difference in exterior noise between electrically driven and Internal Combustion Engine (ICE) vehicles is significant. At this speed range, the main noise share of conventional ICE vehicles is the powertrain and its inlet and exhaust noise, which is not present in electrically driven vehicles. Above this speed, exterior noise from electric vehicles becomes closer to ICE vehicles, due to the increasing tire, road and wind noise.
To ensure detectability and pedestrian safety, authorities have mandated the introduction...
- European Parliament, Council of the European Union: Regulation No. 540/2014: Sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC, 2014Google Scholar
- United Nations Economic Commission for Europe: Regulation No. 138: Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility, 2017/71Google Scholar
- United States National Highway Traffic Safety Administration: Minimum Sound Requirements for Hybrid and Electric Vehicles, Draft Environmental Assessment, Docket Number NHTSA-2011-0100, January 2013Google Scholar
- United States National Highway Traffic Safety Administration: Minimum Sound Requirements for Hybrid and Electric Vehicles, Final Environmental Assessment, DOT HS 812 347, November 2016Google Scholar
- Hellbrück, J.; Ellermeier, W.: Hören: Physiologie, Psychologie und Pathologie. 2nd edition, Göttingen: Hogrefe-Verlag, 2004Google Scholar
- Alt, N.; Wolff, K.; Eisele, G.; Angermaier, F.: Vehicle exterior noise simulation. In: ATZworldwide 108 (2006), No. 10, pp. 11–13Google Scholar
- Alt, N.; Wiehagen, N.; Schlitzer, M. W.: Vehicle Interior Noise Simulation for Evaluating Prototype Powertrains in the Vehicle, Part 1 and 2. In: ATZworldwide 103 (2001), No. 5 and 6Google Scholar
- Genender, P.; Wolff, K.; Pichot, F.; Eisele, G.: Vehicle Interior Noise Simulation VINS as a production vehicle development tool. 16th Aachen Colloquium Automobile and Engine Technology, Aachen, 2007Google Scholar