Advertisement

Noise Reduction Potential of an Engine Oil Pan

  • Tommy Luft
  • Stefan Ringwelski
  • Ulrich Gabbert
  • Wilfried Henze
  • Helmut Tschöke
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 201)

Abstract

Considering automobiles with internal combustion engines, the power train represents one of the main noise sources, especially during idling and slow driving speeds. One major contributor to the overall power train noise emission is the engine oil pan. The objective of this paper is to evaluate the noise reduction potential of an oil pan with a combined use of passive and active methods. The passive approach is best suited for a frequency range above 1,000 Hz and is implemented in this study using different substitute materials. Active noise control techniques are efficient in a frequency range below 1,000 Hz. In the present study piezoceramic patches are used as actuators as well as sensors. By means of FE simulations a smart system is designed to reduce passively and actively the structural vibrations and consequently the resulting sound radiation. Therefore, optimal locations of piezoelectric actuators are computed. A control algorithm with respect to a collocated design is used to obtain high active damping effects. With control, attenuations up to 15 dB in vibration level are achieved at the resonance frequency regions of the most dominant modes of the oil pans in laboratory. It is shown that significant reductions up to 4 dB are achieved on the engine test bench in a frequency range up to 1,000 Hz and at engine speeds below 2,000 rpm, where a multi-discrete excitation characteristic exists. Due to the use of a low-mass plastic oil pan, improvements at several engine operating points are measurable. Drawbacks of this material substitution are the higher temperature dependency and the lower electromechanical coupling of the piezoelectric patches due to the elasticity of the plastic ground material. An oil pan made of sheet steel has shown the worst acoustical properties.

Keywords

Oil pan FEM Material substitution Active control Engine test bench 

Notes

Acknowledgments

The work is financially supported by the German Federal State of Saxony-Anhalt and by the European Commission as a part of the research project “Competence in Mobility”. This support is gratefully acknowledged.

References

  1. 1.
    Marburg S (2002) Developments in structural-acoustic optimization for passive noise control. Arch Comput Methods Eng 9(4):291–370zbMATHCrossRefGoogle Scholar
  2. 2.
    Redaelli M, Manzoni S, Cigada A, Wimmel R, Siebald H, Fehren H, Schiedewitz M, Wolff K, Lahey H-P, Nussmann C, Nehl J, Naake A (2007) Different techniques for active and passive noise cancellation at powertrain oil pan. In: Proceedings of the adaptronic congress, Germany, p 8Google Scholar
  3. 3.
    Heintze O, Misol M, Algermissen S, Hartung CF (2008) Active structural acoustic control for a serial production truck oil pan: experimental realization. In: Proceedings of the adaptronic congress, Germany, pp 147–153Google Scholar
  4. 4.
    Luft T, Ringwelski S, Gabbert U, Henze W, Tschöke H (2010) Adaptive controllers for active noise reduction of a stripped engine. In: Proceedings of World automotive congress FISITA, Budapest, Hungary, “In CD-ROM” F2010-A-039, p 10Google Scholar
  5. 5.
    Ringwelski S, Luft T, Gabbert U (2011) Piezoelectric controlled noise attenuation of engineering systems. J Theor Appl Mech (JTAM), Warsaw 2011 49(3):859–878Google Scholar
  6. 6.
    Ringwelski S, Luft T, Gabbert U, Henze W, Tschöke H (2011) Numerische Untersuchungen eines Rumpfmotors zur passiven und aktiven Schwingungs- und Schallreduktion. In: Proceedings of 6. Magdeburger Symposium Motor- und Aggregateakustik, Magdeburg, Germany, pp 119–128Google Scholar
  7. 7.
    Luft T, Ringwelski S, Gabbert U, Henze W, Tschöke H (2011) Active reduction of oil pan vibrations on a four-cylinder diesel engine. In: Proceedings of 1st international ATZ automotive acoustics conference with autoneum, Zurich, “In CD-ROM” paper 7, p 14Google Scholar
  8. 8.
    Li Y, Han S, Pfeiffer T (2010) Simulationsbasierte und experimentelle Sensitivitätsanalysen eines adaptiven Systems. In: Proceedings of DAGA, Berlin, , pp 295–296Google Scholar
  9. 9.
    Rimondi M, Ruotolo R, Lomario D (2011) Design optimization of an oil pan for radiated noise reduction. In: Proceedings of the Aachen acoustic colloquium, Aachen, pp 61–69Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Tommy Luft
    • 1
  • Stefan Ringwelski
    • 2
  • Ulrich Gabbert
    • 2
  • Wilfried Henze
    • 1
  • Helmut Tschöke
    • 1
  1. 1.Institute of Mobile Systems (IMS), Otto-von-Guericke University of MagdeburgMagdeburgGermany
  2. 2.Institute of Mechanics (IFME), Otto-von-Guericke University of MagdeburgMagdeburgGermany

Personalised recommendations