Powertrain Sound Quality - Active Sound Technology Development and Deployment
* Presenting author
Customer expectations on vehicle interior and exterior powertrain sound quality are rising from model year to model year. At the same time target conflicts in vehicle development have been increasing continuously in recent years due to strong market demands for powertrain downsizing and weight and cost reduction. In order to reduce or even eliminate difficult target conflicts the Active Noise Cancellation (ANC) and Active Sound Design (ASD) technologies turned out to be a powerful alternative to conventional (passive) NVH-countermeasures. As a consequence, the stringent NVH and sound quality targets can be met and hence customer expectations can be satisfied.The broad and robust deployment of Active Sound Technology on a global scale is a huge challenge in vehicle development. Here, an intelligent strategy and framework is mandatory, utilizing efficient and well-designed algorithms, development tools, methods and implementation processes. This becomes even more evident in light of an increasing number of product variants (complexity) and - in contrast to this - a decreasing number of prototypes.In this paper, selected aspects of the deployment of active sound technology for ICE-Powertrains will be discussed – e.g. with regard to complexity, pitfalls and tuning results. Finally, selected generic aspects and topics will be examined.