Acoustic of Electric Vehicules


Ten years ago, the automotive sector was undergoing a profound technological transformation to adapt to today’s ecological requirements. Restrictions in terms of CO2 emissions led manufacturers to work on "cleaner" automotive concepts, such as the electric vehicle. This technology brought another gain in terms of environment: the absence of noise and vibrations.

The AVELEC project helped to control the risk of additional costs and to seize the opportunity to reduce noise pollution. Car manufacturers have long been able to integrate acoustic and vibration constraints into the design process of combustion engine vehicles. AVELEC’s challenge was to build an equivalent know-how for electric vehicles, by integrating acoustic and vibratory performances right from the design phase.

The project aimed to develop knowledge and methodologies to control

  • Noise and vibrations at the source generated by the E-Powertrain, by addressing the problem of vibro-acoustic sizing in relation to the electric (control and electric motor) and thermal sizing of the drive train.
  • The proper integration of the E-Powertrain in mass-market vehicles, in terms of vibration and noise emitted (transfer to the body or radiated to the external environment).

The methods and tools developed make it possible to take into account acoustic and vibratory impact from the first phases of electric vehicle design. The parameters to be studied are motor control, E-Powertrain dynamic response and transfer to the body and/or the environment.

The results of the project constitute a technological advance on a strategic subject and have contributed to the design of vehicles accessible to the greatest number of people, with exterior and interior acoustics that are truly pleasant for city dwellers and users.