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Acoustics of Hybrid Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 09, 2010 by SAE International in United States
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Event: 6th International Styrian Noise, Vibration & Harshness Congress - Sustainable NVH solutions inspired by ecology and economy
The technology used in hybrid vehicle concepts is significantly different from conventional vehicle technology with consequences also for the noise and vibration behavior. In conventional vehicles, certain noise phenomena are masked by the engine noise. In situations where the combustion engine is turned off in hybrid vehicle concepts, these noise components can become dominant and annoying. In hybrid concepts, the driving condition is often decoupled from the operation state of the combustion engine, which leads to unusual and unexpected acoustical behavior. New acoustic phenomena such as magnetic noise due to recuperation occur, caused by new components and driving conditions. The analysis of this recuperation noise by means of interior noise simulation shows, that it is not only induced by the powertrain radiation but also by the noise path via the powertrain mounts. The additional degrees of freedom of the hybrid drive train can also be used to improve the vibrational behavior. As an example it is shown with a multi-body simulation of the drive train how its low frequency vibrations can be reduced with a targeted control of the electric motors.
CitationEisele, G., Wolff, K., Wittler, M., Abtahi, R. et al., "Acoustics of Hybrid Vehicles," SAE Technical Paper 2010-01-1402, 2010, https://doi.org/10.4271/2010-01-1402.
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