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The Use of Existing and Advanced Intensity Techniques to Identify Noise Sources on a Diesel Engine
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English
Abstract
Existing techniques for identifying noise sources are reviewed. One such technique (the lead-wrapping approach) was used to source-identify a diesel engine and measure the sound power radiated from the major surfaces. Two new advanced techniques (surface intensity and acoustic intensity) were developed and used to measure the sound power radiated from the same major surfaces. The conventional lead-wrapping and new intensity results were compared and agreement was good. The advantages of the new intensity techniques are described and suggestions made for reducing the noise of this and other similar diesel engines.
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Authors
Citation
Crocker, M., "The Use of Existing and Advanced Intensity Techniques to Identify Noise Sources on a Diesel Engine," SAE Technical Paper 810694, 1981, https://doi.org/10.4271/810694.Also In
References
- McGary M. Crocker M.J. “Noise Source Identification of Diesel Engines Using Surface Intensity Measurements” EPA Contract 68-01-4907, Report No. 5, HL80-2 199 January 1980
- Reinhart T.E. Crocker M.J. “Noise Source Identification of Diesel Engines Using Acoustic Intensity Measurements” EPA Contract 68-01-4907, Report No. 7, HL80-39 142 September 1980
- Crocker M.J. Zockel M. McGary M. Reinhart T. “Noise Source Identification Under Steady and Accelerating Conditions on a Turbocharged Diesel Engine” SAE Paper 800275 , 1980 Transactions) also printed “Vehicle Noise Regulation and Reduction” SP-456, SAE February 1980 1 11
- McGary M. Crocker M.J. “Surface Intensity Measurements on a Diesel Engine” Noise Control Engineering 16 1 1981 26 36
- Crocker M.J. “Identifying Sources of Noise in Diesel Engines” INTER-NOISE 79 Proceedings 1979 347 356
- Reinhart T.E. Crocker M.J “A Comparison of Noise Source Identification Techniques on a Diesel Engine” INTER-NOISE 80 Proceedings 1980
- McGary M. Crocker M.J. “Correction of Instrumentation Phase Shift Errors in the Theory and Practice of Surface Acoustical Intensity Measurements” submitted to J. Sound Vib 1980
- Crocker M.J. “The Use of Existing and Advanced Intensity Techniques to Identify Noise Sources on a Diesel Engine” SAE paper to be published 1981
- Reinhart T.E. Crocker M.J. ”The Use of Intensity Techniques to Identify Noise Sources on a Diesel Engine” submitted to J. Sound Vib. 1981
- Crocker M.J. Zockel M. “Techniques for Noise Source Identification in Complex Machines” Proceedings of Tenth International Congress on Acoustics, Satellite Symposium on Engineering for Noise Control July 1980 B1 B10
- Crocker M.J. “Identification of Noise from Machinery, Review and Novel Methods” INTER-NOISE 77 Proceedings 1977 A201 211
- Crocker M.J. Kessler F.M. Price A.J. “Noise and Noise Control” Volume II CRC Press West Palm Beach, Florida 1981 7
- Thien G.E. “The Use of Specially Designed Covers and Shields to Reduce Diesel Engine Noise” SAE Paper 730244 1973
- Crocker M.J. Wang M. Kaemmer N. “Noise Source Identification on Trucks” EPA Contract 68-01-3555, Report No. 8, Final Report, Herrick Labs Report HL78-14 April 1978
- Crocker M.J. Sullivan J.W. “Measurement of Truck and Vehicle Noise” 1978 SAE Paper 780387 , also SAE Transactions 1978 1829 1845
- Kaye M.C. Patterson W.N. Bender E.K. “Preliminary Noise Diagnosis of Freightliner Datum Truck - Tractor” Report No. DOT-TST-73-6 May 1973 Kaye M.C. Ungar E.E. “Acoustic and Performance Test Comparison of Initial Quieted Truck With Contemporary Production Trucks” Rep. No. DOT-TST-74-2, Dept. of Transportation Sep. 1973
- Chung J.Y. Crocker M.J. Hamilton J.F. “Measurement of Frequency Responses and the Multiple Coherence Function of the Noise Generation System of a Diesel Engine” J. Acoust. Soc. Am. 58 3 1975 635 642
- Seybert A.F. Crocker M.J. “The Use of Coherence Techniques to Predict the Effect of Engine Operating Parameters on Noise” Trans. ASME, J. of Eng. Ind. 97 13 1976 1227 1233
- Seybert A.F. Crocker M.J. “Recent Applications of Coherence Function Techniques in Diagnosis and prediction of Noise” INTER-NOISE 76 Proceedings 1976 7 12
- Hayes P.A. Seybert A.F. Hamilton J.F. “A Coherence Model for Piston Impact Generated Noise” SAE Paper 790274 1979
- Alfredson R.J. “The Partial Coherence Technique for Source Identification on a Diesel Engine” J. Sound and Vib. 55 3 1977 1 8
- Brito J.D. “Sound Intensity Patterns for Vibrating Surfaces”, Ph.D. Thesis MIT 1976
- Fahy F.J. “Measurement of the Acoustic Intensity Using the Cross-Spectral Density of Two Microphone Signals” J. Acoust. Soc. Am. 62 4 1977 1057 1059
- Chung J.Y. “Cross-Spectral Method of Measuring Acoustic Intensity Without Error Caused by Instrument Phase Mismatch” J. Acoust. Soc. Am. 64 6 1978 1613 1616
- Hodgson T.H. “Investigation of the Surface Intensity Method for Determining the Noise Sound Power of a Large Machine in Situ” J. Acoust. Soc. Am. 61 2 1977 437 493
- Czarnecki S. et al “Correlation Method of Measurements of Sound Power in the Near Field Conditions” Archives of Acoustics 1 3 1976 201 213
- Brito J.D. “Machinery Noise Source Analysis Using Surface Intensity Measurements” NOISE-CON 79 Proceedings 1979 137 142
- Kaemmer N. “Determination of Sound Power from Intensity Measurements on a Cylinder”, MSME Thesis Purdue University 1978
- Kaemmer N. Crocker M.J “Surface Intensity Measurements on a Vibrating Cylinder” NOISE-CON 79 Proceedings 1979 153 160
- Kaemmer N. Crocker M.J. “Sound Power Determination from Surface Intensity Measurements on a Vibrating Cylinder” accepted for publication in J. Acoust. Soc. Amer 1980
- McGary M. Crocker M.J. “Surface Acoustical Measurements on a Diesel Engine” NASA Technical Memorandum 81807 April 1980
- Chung J.Y. et al “Application of Acoustic Intensity Measurement to Engine Noise Evaluation” SAE Paper 790502 1979
- Krishnappa G. “Cross-Spectral Method of Measuring Acoustical Intensity - Correcting Phase Mismatch Error by Calibrating Two Microphone Systems” J. Acoust. Soc. Am. Suppl. 1 66 Fall 1979 S39 see also J. Acoust. Soc. Am. 69 1 1981 307 310
- Roland J. Crocker M.J. Sandbakken M. “Problems with In-Duct Measurement of Fan Sound Power Using ASHRAE Standard 68-78” ASHRAE Research Project RP-264, Final Report December 1980
- Crocker M.J. Raju P.K. Forssen B. “Measurement of Transmission Loss of Panels by the Direct Determination of Transmitted Acoustic Intensity” paper accepted for publication in Noise Control Engineering 1981
- Chung J.Y. Crocker M.J. “The Effect of Wave Cancellation on the Radiation Resistance of a Simply-Supported Baffled Beam” J. Sound Vib. 40 3 1975 381 391
- Chan C.M.P. Anderton D. “Correlation Between Engine Block Surface Vibration and Radiated Noise of In-Line Diesel Engines” Noise Control Engineering 2 1 1974 16 24
- Ford D.M. Hayes P.A. Smith S.K. “Engine Noise Reduction by Structural Design Using Advanced Experimental and Finite Element Methods” SAE Paper 790366 1979
- Crocker M.J. Hamilton J.F. “Modeling of Diesel Engine Noise Using Coherence” SAE Paper 790362 1979 also SAE Transactions 1979 88 1263 1273
- Crocker M.J. “Identification of Methods of Reducing and Controlling Internal Combustion Engine Noise and Vibration” EPA Contract 68-01-4907, Report No. 8, HL80-41 39 November 1980