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An Integrated Numerical Tool for Engine Noise and Vibration Simulation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 20, 1997 by SAE International in United States
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The development of low noise engines and vehicles, accompanied by the reduction of costs and development time, can be obtained only if the design engineer is supported by complex calculation tools in a concurrent engineering process. In this respect, the reduction of vibrations (passenger comfort) and of vehicle noise (accelerated pass by noise) are important targets to meet legislative limits. AVL has been developing simulation programs for the dynamic-acoustic optimization of engines and gear trains for many years. To simulate the structure-born and air-born noise behavior of engines under operating conditions, substantial efforts on the mathematical simulation model are necessary.
The simulation tool EXCITE, described in this paper, allows the calculation of the dynamic-acoustic behavior of power units. EXCITE considers different excitations, as well as the nonlinear behavior of the crankshaft (stiffness and mass distribution depending on the crank angle) and of the slider bearings (elastohydrodynamic effects).
The simulation code of EXCITE was further improved, refined, and validated through cooperative effort between major European car manufacturers. The code was validated thoroughly by experimental tests on a reference powertrain, a FIAT 1.8-liter 4-cylinder gasoline engine. This paper describes the results obtained from the experimental tests.
The comparison between experimental and computed results shows that the level of accuracy attained with the use of this EXCITE is excellent.
CitationLoibnegger, B., Rainer, G., Bernard, L., Micelli, D. et al., "An Integrated Numerical Tool for Engine Noise and Vibration Simulation," SAE Technical Paper 971992, 1997, https://doi.org/10.4271/971992.
- Bernard, L. Piccone, A. Rinolfi, R. “New Design Methodologies for Reducing the Development Cycle of Low Noise Powertrains,” FISITA '96
- Rainer, G.Ph. Loibnegger B. September 1996
- Priebsch, H.H. Affenzeller, J. Kuipers, G. “Structure Borne Noise Prediction Techniques,” SAE Technical Paper Series 900019 International Congress and Exposition Detroit 1990
- Rainer, G.Ph. “CAD/CAE/CAM-Integrated Applications in Engine Development” Proceedings, Automotive Simulation 91 Schliersee October 91 Springer Verlag
- Cattani E. Micelli D. Sereni L. Cocordano S. “Numerical Simulation and Experimental Comparison of an Engine Structure Dynamic Modal Behavior,” ATA International Conference on New Design Frontiers for More Efficient, Reliable and Ecological Vehicles Florence 1994
- Bernard L. et al. “Final Reports of the Brite/Euram project BE-4126 Powertrain Noise & Vibration Prediction,” 1995
- Rainer, G.Ph. Gschweitl, E. Pramberger, H. “Dynamic Analysis of Engine Components using Large FE-Models,” IAT'95 Conference Radenci/Slovenia 6-7 April 1995
- Ott, W. Kaiser, H.J. Mayer, J. “Finite Element Analysis of the Dynamic Behavior of an Engine Block and Comparison with Experimental Modal Test Results” Proceedings, MSC World Users Conference L.A. 26-30 March 1990
- Hellinger, W. Priebsch, H.H. Landfahrer, K. Mayerhofer, U. “Valve Train Dynamics and its Contribution to Engine Performance,” Paper C389/129 to be published at FISITA London 1992
- Priebsch, H.H. Hellinger, W. Loibnegger, B. Rainer, G.Ph. “Application of Computer Simulation for the Prediction of Vibration and Noise in Engines,” ATA 3rd. International Conference Firenze 1992
- Gran, St. Technical University-Graz May 1994
- Priebsch, H.H. Affenzeller, J. “Prediction Techniques for Vibration and Stress of Nonlinear Supported Rotating Crankshafts Paper D59 CIMAC Florence 1991
- Loibnegger B. Rainer G. Ph. “Design Supporting Analysis for Powertrain Noise and Vibration,” Internoise 1996 Liverpool
- Micelli D. Turino G. Grasso C. Zappala' A. “A New predictive Tool to Design the Silent Powertrain,” ATA International Conference on The Virtual Automobile and the Role of Experimentation Florence 1997