Elastic Body Contact Simulation for Prediction Piston Slap Induced Noise in IC Engines

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

Piston slap induced noise may contribute significantly to the noise emitted from Internal Combustion engines in a specific frequency range.
There is a high interest to simulate this phenomenon in the development process of both, Diesel and gasoline engines in order to analyse measures for reducing this noise source in an early development stage of the engine. Piston slap is mainly affected by various design
parameters of piston and liner, by the temperature distribution and by the combustion timing.
The paper summarises a methodology for predicting the piston to liner contact in running engines by means of MBD (Multi-Body Dynamics) and FEM. The advantages of this methodology are precise contact modelling on one hand and freedom in the model application on the other. Thus, trends caused by changes in the piston design and of combustion parameters on the contact impact can be analysed by simulation. Contact
statistics e.g. peak contact pressures and their locations, etc. help to assess the importance of the contact events.
In addition to the mathematical modelling of the excitation the paper
describes the transfer mechanisms of the piston slap phenomenon. Thus,
the model is extended in order to analyse vibration transfer via engine
structure. Results of simulation work show structure surface velocity
levels and their contribution to integral levels in different frequency
bands.
Originalspracheenglisch
TitelMulti-body dynamics : monitoring and simulation techniques
Untertitel... papers accepted for the second International Symposium on Multi-Body Dynamics: Monitoring and Simulation Techniques (MBD-MST 2000)
ErscheinungsortLondon
Herausgeber (Verlag)Professional Engineering Publ.
Seitenumfang17
ISBN (Print)1860582583
PublikationsstatusVeröffentlicht - 2000
Veranstaltung2nd Triennal International Symposium on Multi-Body Dynamics: Monitoring and Simulation Techniques - Bradford, Großbritannien / Vereinigtes Königreich
Dauer: 27 Juni 200028 Juni 2000

Konferenz

Konferenz2nd Triennal International Symposium on Multi-Body Dynamics
KurztitelMBD-MST 2000
Land/GebietGroßbritannien / Vereinigtes Königreich
OrtBradford
Zeitraum27/06/0028/06/00

Treatment code (Nähere Zuordnung)

  • Theoretical
  • Experimental

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