NVH Highlights and (Pot)Holes 1972-2001

The NVH performance of motor vehicles has been improved dramatically during the 1972-2001 period. The paper identifies the main advances made, i.e. the development highlights and indicates a number of points where a lot of work still needs to be done (Holes or with and automotive flavor “Potholes”).

The paper is structured as indicated below.

• 1
  Introduction
• 2
  Highlights
• 2.1
  Vehicle
• 2.1.1
  Body rigidity
• 2.1.2
  Body leakage
• 2.1.3
  Engine efficiency and vibration isolation
• 2.1.4
  Suspension systems
• 2.2
  Noise Control proper
• 2.2.1
  Passby noise treatment and Aerodynamics
• 2.2.2
  Interior treatment simulation and optimization
• 2.2.3
  Noise Control material improvements
• 2.2.4
  Multi-functional parts
• 2.2.5
  Dissipative treatment packages
• 2.2.6
  Noise Quality engineering
• 2.2.7
  Development Methodology: Benchmarking
• 3
  (Pot)Holes
• 3.1
  Modeling car subsystems
• 3.2
  Optimization; application to ever-larger subsystems
• 3.3
  Simulation and Optimization of Passby Noise
• 3.4
  Diagnostics
• 3.5
  Materials and Shapes
• 3.6
  Understanding the vehicle development process