EXPERIMENTAL TECHNIQUES LEADING TO THE BETTER UNDERSTANDING OF THE ORIGINS OF AUTOMOTIVE ENGINE NOISE

The success of theoretical engine noise prediction using such techniques as finite element modelling is highly dependent upon the understanding of the various mechanisms of noise generation in the running engine. The paper describes specific rig tests, both static and dynamic, that have been developed to simulate individually the major noise producing mechanisms. Tests include gas force simulation by both explosive and hydraulic methods, mechanical impact simulation of both piston slap and bearing impacts, and impulsive loading of the various structural elements of the engine. The importance of defining the vibration energy paths through the engine structure and the transmission of energy at the various bearing surfaces is discussed. Two forms of wave propagation through the engine structure are demonstrated and their significance assessed. For the covering abstract of the conference see TRIS 451834. (Author/TRRL)

• Supplemental Notes:
  • Vehicle Noise and Vibration. Papers read at the International Conference held at the Institution of Mechanical Engineers, London 5-7 June 1984.
• Corporate Authors:

  Mechanical Engineering Publications Limited

  P.O. Box 24, Northgate Avenue
  Bury St Edmunds, Suffolk IP32 6BW,   England 
• Authors:
  • Priede, T
  • Dixon, J
  • Grover, E C
  • Saleh, N A
• Conference:
  • Vehicle Noise and Vibration. Papers read at the International Conference held at the Institution of Mechanical Engineers, London 5-7 June 1984.
• Publication Date: 1984

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 141-159

Subject/Index Terms

• TRT Terms: Conferences; Dynamics; Energy; Finite element method; Forecasting; Motors; Noise; Noise sources; Simulation; Statics; Test procedures; Testing equipment; Vehicle power plants; Vibration; Wave motion; Waves
• Old TRIS Terms: Automobile engines
• ITRD Terms: 8525: Conference; 5473: Dynamics; 213: Energy; 6490: Finite element method; 132: Forecast; 1334: Motor; 9103: Simulation; 6748: Sound; 5433: Statics; 6247: Test rig; 5558: Vibration; 6767: Wave
• Subject Areas: Energy; Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00451851
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1986 12:00AM