The sound and excitations of auxiliary systems are easily masked in combustion-powered vehicles. In BEVs, however, systems like eCompressors are much more noticeable.
Taking a holistic approach, Vibracoustic’s engineers identified a broad range of unwanted frequencies caused by the e-motor and the compression device within the eCompressor. These caused both body vibrations and undesired radiated noises – particularly when the vehicle was stationary or recharging.
Alongside significantly improved NVH performance, the system’s plastic bracket allows for better load distribution. Assembly is also simplified with the consolidation of two separate products.
Testing has demonstrated substantial NVH improvements over conventional mounting solutions. This included testing in an anechoic chamber and observations from test engineers. Testing also revealed that complete encapsulation does not lead to thermal issues, instead offering minor improvements to compressor efficiency.
