This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Assessment of Combustion Mechanical Noise Separation Techniques on a V8 Engine
Technical Paper
2017-01-1846
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The noise radiated by an ICE engine results from a mixture of various complex sources such as combustion, injection, piston slap, turbocharger, etc. Some of these have been categorized as combustion related noise and others as mechanical noise. Of great concern is the assessment of combustion noise which, under some operating conditions, is likely to predominate over the other sources of noise. The residual noise, produced by various other sources, is commonly referred to as mechanical noise. Being able to extract combustion and mechanical noise is of prime interest in the development phase of the engine and also for diagnostic purposes.
This paper presents the application of combustion mechanical noise separation techniques on a V8 engine. Three techniques, namely the multi regression analysis, the classical Wiener filter and the cyclostationary (synchronous) Wiener filter, have been investigated. The techniques have been applied to microphone recordings measured at one meter distance from an engine running on a test bench. Reference in-cylinder pressure sensors have been instrumented and synchronously acquired together with the microphones. Strengths and weaknesses of the techniques are assessed and presented in the paper.
Finally a source separation technique is applied as a pre-processing step to the sound recordings measured on a microphone array. Sound source localization then allows to localize and quantify the combustion and mechanical sources of noise on the engine. This is illustrated with an application example.
Recommended Content
| Technical Paper | Heat Release Based Virtual Combustion Sensor Signal Bias Sensitivity |
| Technical Paper | 1D Thermo-Fluid Dynamic Simulation of a High Performance Lamborghini V12 S.I. Engine |
Authors
Topic
Citation
Bianciardi, F., Janssens, K., Gryllias, K., Delvecchio, S. et al., "Assessment of Combustion Mechanical Noise Separation Techniques on a V8 Engine," SAE Technical Paper 2017-01-1846, 2017, https://doi.org/10.4271/2017-01-1846.Also In
References
- Hirano I. , Kondo M. , Uraki Y. , Asahara Y. Using multiple regression analysis to estimate the contributions of engine-radiated noise components JSAE 9931233 1999
- Wiener N. Extrapolation, interpolation and smoothing of stationary time series The technology press of the Massachusetts Institute of Technology New York John Wiley & Sons, Inc. 1950
- Lee M. , Bolton J. S. , Suh S. Estimation of the combustion-related noise transfer matrix of a multi-cylinder diesel engine Measurement Science and Technology 0233/20/1/15106 2009
- Bianciardi F. , Britte L. , Janssens K. Critical assessment of OPA: effect of coherent path inputs and SVD truncation Proceedings ICSV20 July 2013
- Suh , I. Combustion on Radiation Noise and Mount Vibration from a V8 Gasoline Engine SAE Technical Paper 2003-01-1730 2003 10.4271/2003-01-1730
- Pruvoust L. , Leclere Q. , Parizet E. Improvement of the spectrofilter - separation of coherent sources overlapping in time and frequency domains 19th international congress on acoustics Madrid 2-7 September 2007
- Pruvost L. , Lecler Q. , Parizet E. Diesel engine combustion and mechanical noise separation using an improved spectrofilter Mechanical Systems and Signal Processing 23 2009 2072 2087
- Leclere Q. , Sandier C. , Sauvage O. Source separation in diesel ingines using Wiener filtering: physical interpretations 8th Symposium Automotive NVH comfort 22 & 23 October 2014
- Lafon B. , Antoni J. , Sidahmed M. , Polac L. The concept of cyclic sound intensity and its application to acoustical imaging Journal of Sound and Vibration 330 2011 2017 2121
- Badaoui M. El. , Daniere J. , Guillet F. , Serviere C. Separation of combustion noise and piston-slap in diesel engine - Part I : Separation of combustion noise and piston-slap in diesel engine by cyclic Wiener filtering Mechanical Systems and Signal Processing 19 2005 1209 1217
- Peeters B. , Cornelis B. , Janssens K. , Van der Auweraer H. Removing disturbing harmonics in operational modal analysis Proceedings of 2nd International Operational Modal Analysis Conference (IOMAC 2007) 30 April - 2 May 2007
- Antoni J. , Daniere J. , Guillet F. Effective vibration analysis of IC engines using cyclostationarity, Part I - A methodology for condition monitoring journal of Sound and Vibration 257 5 2002 815 837