This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Improving Acoustic Performance of an Air Filter Box. TL Analysis and Device Optimization
Technical Paper
2016-01-1813
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The characteristics of the intake system affect both engine power output and gas-dynamic noise emissions. The latter is particularly true in downsized VVA engines, where a less effective attenuation of the pressure waves is realized, due to the intake line de-throttling at part-load. For this engine architecture, a refined air-box design is hence requested.
In this work, the Transmission Loss (TL) of the intake air-box of a commercial VVA engine is numerically computed through a 3D FEM approach. Results are compared with experimental data, showing a very good correlation. The validated model is then coupled to an external optimizer (ModeFRONTIERTM) to increase the TL parameter in a prefixed frequency range. The improvement of the acoustic attenuation is attained through a shape deformation of the inner structure of the base device, taking into account constraints related to the device installation inside the engine bay.
The shape deformation is realized by means of a dedicated software (SculptorTM), which allows to “morph” the base 3D mesh through a number of control points. In this way, the optimization procedure does not require the reformulation of the numerical mesh for the TL analysis of the modified device.
At the end of the optimization loop, a significant improvement of the TL parameter is obtained for the optimized device.
Citation
Siano, D. and Bozza, F., "Improving Acoustic Performance of an Air Filter Box. TL Analysis and Device Optimization," SAE Technical Paper 2016-01-1813, 2016, https://doi.org/10.4271/2016-01-1813.Also In
References
- Wang Xu Vehicle noise and vibration refinement Woodhead Publishing 2010
- Cerrato G. Automotive Sound Quality - Powertrain, Road and Wind Noise Sound & Vibration April 2009
- Bozza , F. , Gimelli , A. , Piazzesi , R. , Fortunato , F. et al. The Prediction of the Performance and Gasdynamic Noise Emitted by a Medium-Size Spark-Ignition Engine by Means of 1D and 3D Analyses SAE Technical Paper 2007-01-0380 2007 10.4271/2007-01-0380
- Siano D. , Prati M.V. , Costagliola M. A. , Panza M.A. Evaluation of Noise Level Inside Cab of a Bi-Fuel Passenger Vehicle 6th International Conference on Automotive and Transportation Systems (ICAT '15) Salerno, Italy June 27-29, 2015
- Bertolini , C. , Horak , J. , Mantovani , M. , & Lo Sinno , G. Interior panel contribution based on pressure-velocity mapping and acoustic transfer functions combined with the simulation of the sound package INTER-NOISE and NOISE-CON Congress and Conference Proceedings 2011 6 2155 2172 2015
- Cerrato G. and Goodes P. Practical approaches to solving noise and vibration problems Sound & Vibration April 2011
- De Bellis , V. , Bozza , F. , Siano , D. , and Gimelli , A. Fuel Consumption Optimization and Noise Reduction in a Spark-Ignition Turbocharged VVA Engine SAE Int. J. Engines 6 2 1262 1274 2013 10.4271/2013-01-1625
- Siano , D. , Teodosio , L. , De Bellis , V. , and Bozza , F. Analysis and Design of an Intake Filter Box for a Downsized VVA Engine SAE Technical Paper 2014-01-1693 2014 10.4271/2014-01-1693
- Lee , J. , Lee , C. , and Nitkiewicz , J. The Application of a Lost Motion VVT System to a DOHC SI Engine SAE Technical Paper 950816 1995 10.4271/950816
- Hatano , K. , Iida , K. , Higashi , H. , and Murata , S. Development of a New Multi-Mode Variable Valve Timing Engine SAE Technical Paper 930878 1993 10.4271/930878
- GT-Power V.7.5, User's Manual Gamma Tech.Inc. 2014
- Ansys V14, User's Manual Ansys Inc. 2011
- Munjal M. L. Acoustics of Ducts and Mufflers John Wiley & Sons 1987
- Abom M. An Introduction to Flow Acoustics 1651-7660
- Citarella R. , and Siano D. Transmission loss assessment of an air induction system by BEM ICAD2006, The Fourth International Conference on Axiomatic Design Firenze, Italy June 2006 13 16
- MSC Actran TM User Manual 2015
- Sculptor TM V3.5 User Manual 2015
- ModeFRONTIER TM V4.0 User Manual 2013
- Rona A. The acoustic resonance of rectangular and cylindrical cavities Journal of Algorithms and Computational Technology 2007 1 3 329 355
- Selamet A. , Kothamasu V. , Novak J.M. Insertion loss of a Helmholtz resonator in the intake system of internal combustion engines: an experimental and computational investigation Applied Acoustics 62.4 381 409 2001
- Siano , D. , Ferrara , G. , Lenzi , G. , D’Agostino , D. , Fioravanti , A. Experimental and Numerical Comparison of the Acoustic Performance of the Air Filter Box of a SI-ICE SAE Int. Journal of Engines 8 5 2368 2378 1946-3944 2015
- Siano D. , Bozza F. , Auriemma F. Acoustic and fluid-dynamic optimization of an automotive muffler Proc. of Inst. Mech. Eng., Part D: Journal of Automobile Engineering 227 5 735 747 10.1177/0954407012465689 2013
- Sasaki , D. ARMOGA, An efficient Multi-Objective Genetic Algorithm Technical Report 2005
- Stephenson , P. , Chen , Y. , Fateh , N. , Parashar , S. et al. Multi-objective Optimization of a Charge Air Cooler using modeFRONTIER SAE Technical Paper 2008-01-0886 2008 10.4271/2008-01-0886
- Winston , Wayne L. , and Goldberg Jeffrey B. Operations research: applications and algorithms 3 Boston Duxbury press 2004
- Siano , D. , Auriemma , F. PhD , and Bozza , F. Pros and Cons of Using Different Numerical Techniques for Transmission Loss Evaluation of a Small Engine Muffler SAE Technical Paper 2010-32-0028 2010 10.4271/2010-32-0028
- Verma , A. and Munjal , M. Flow-Acoustic Analysis of the Perforated-Baffle Three-Chamber Hybrid Muffler Configurations SAE Int. J. Passeng. Cars - Mech. Syst. 8 1 370 381 2015 10.4271/2015-26-0131