Acoustic Engineering of Hybrid Vehicles

Hybrid vehicles add much complexity to powertrain and vehicle development. From an NVH point of view especially the sound consistency in the vehicle interior and the transition between different propulsion systems is of high interest. Additionally legislative regulations for minimum exterior noise have to be considered in hybrid vehicle developments.

AVL Approach

The AVL Acoustic Engineering team is prepared to support our customers and to provide latest NVH development tools and methodologies, NVH facilities and engineering capabilities to develop individual solutions for and together with our customer. The major services of AVL focusing on NVH development are:

  • Engine and Powertrain NVH Development
  • Vehicle NVH Refinement
  • NVH Powertrain Integration
  • Vehicle and Powertrain NVH Simulation
  • Sound Engineering
  • NVH Software and Methodology Development
  • Feedback for the driver to inform him about the current vehicle condition
  • Interior sound generation
  • Exterior sound generation to meet legislative regulations
  • Sound branding

The excellent know-how and innovative ideas as well as the strong link of the NVH team to other skill teams within AVL, enforces the outcome of every single project individually and generates an additional benefit for our customers.

In order to support our engineers during NVH development, AVL developed specialized NVH tools. These tools are designed and implemented under lead of acoustic engineers to meet the engineer's needs. Please find a detailed description of our tools in the "Acoustic Engineering Tools" section.


Customer Benefits

Based on our more than 40 years of experience in conventional powertrain development and our ongoing R&D effort to improve processes, analysis methodologies and refinements we provide following services to our customers:

 

Your Benefits

  • Confidence and reliability through production-feasible, cost-effective and proven NVH solutions
  • AVL's in-house research and strong involvement in national and EU research projects supports a view beyond technology horizons
  • One experienced partner for NVH simulation and experimental acoustic development
  • Know- how transfer to your resident engineers
  • Complete confidentiality for all our projects
  • Second opinion from an independent partner
  • Close cooperation through manifold AVL engineering centers worldwide with on-site support of highly qualified staff
  • Project work in close cooperation between OEM's, AVL and sub-suppliers as well as integration of project work in the OEM development process
  • Customized work packages for every scope – from small troubleshooting to large scale projects, from concept up to SOP
  • The unique competence synergies of AVL's three business areas Advanced Simulation Technologies, Powertrain Engineering and Instrumentation and Test Systems is basis and profit for each NVH project

References

Satisfied customers are the best evidence for successful projects and developments. The AVL acoustic engineering team is performing customer projects as well as research projects since more than 40 years. Due to confidentiality reasons the published references for our work are limited – but this is part of our sustainable success.

Latest Project Examples

  • Powertrain NVH integrations
    • Mounting system layout
    • Intake and exhaust system development and refinement
    • Driveline development
    • Vehicle NVH assessment and improvement
  • Efficient driveline refinement by simulation and experimental development