With the arrival of hybrid and electric engine systems, the automotive supplier Trèves had to deal with a change of vehicle vibro-acoustic emission: medium and high frequency power-train emissions are enhanced, whining and whistling noises appear, and rolling sounds and aerodynamic noises emerge. New solutions for noise absorption or noise insulation, which take into account the vehicle weight reduction constraints, are needed.
To face these challenges, Trèves established a partnership with the Carnot ESP institute (CEVAA), in order to carry out a noise, vibration and harshness (NVH) benchmarking study on hybrid and electric vehicles. The study currently underway will make it possible to identify the acoustic signatures of the major elements in the power-train and noise-emitting parts. Thanks to this cooperation, the Company is building up a database which will be used to develop new solutions in materials and acoustics.