Engine Acoustics and Mechanics

Engine acoustics and mechanics are very closely related fields, since the physical design of the components and the tribological boundary conditions during operation affect the acoustic behavior of the engine. In addition, there are interactions between combustion and the mechanics due to the

  • dynamic characteristic of the gas forces – also and especially in the higher-frequency range (combustion noise)
  • mechanical loading and inertia forces of the moving engine components.
  • coupling of these components via nonlinear hydrodynamic films of lubricant

As part of a holistic optimization of the noise behavior, these dependencies must be taken into consideration; right through to the effect on consumption and exhaust emissions/after treatment.