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Noise, Vibration and Harshness in Electric Vehicles

  • Market Research Report
  • MR-SB-118
Published April 01, 2010 by SupplierBusiness in United Kingdom
  • English
The advent of cars with electric powertrains, whether hybrid or battery electric vehicles, presents new challenges to Noise, Vibration and Harshness (NVH) engineers. The electric drivetrains at low speeds are far quieter than internal combustion engines (ICE), which allow sounds that have been masked in traditional cars to emerge. Additionally, the electric machines create their own new noises and vibrations. And for hybrid vehicles (HEV), there is the additional challenge of transitional sounds between ICE and electric drive. Finally, there is the problem of too little noise when running on electricity, which has led groups representing blind persons to campaign for a minimum noise level in vehicles. Engineers are using simulation and traditional testing to reduce noises that annoy passengers and design sounds that will please them or warn the world outside the car. This SupplierBusiness Briefing discusses emerging sounds, new sounds, transition problems, and artificial sounds associated with electric powertrain vehicles. SupplierBusiness BRIEFINGS provide focused information on industry hot topics. Shorter than the traditional SupplierBusiness reports, they are focused, clear and concise. Based on interviews, meetings and information obtained directly by our analysts from players active in the areas under consideration, they contain the genuine voice of the industry.