Sound Intensity Mapping of an Engine Dynamometer

This paper presents an investigation of the noise source identification (NSI) in a diesel engine at different engine speeds. An experiment was conducted utilizing an eddy current dynamometer with a sound intensity mapping method for the engine speed range of 1500 rpm to 2000 rpm. The noise source o...

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Main Authors:	M. S. M., Sani, M. M., Rahman, M. Z., Baharom, I., Zaman
Format:	Article
Language:	English
Published:	Universiti Malaysia Pahang 2015
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/1/Sound%20Intensity%20Mapping%20Of%20An%20Engine%20Dynamometer.pdf

id	ump-9865
recordtype	eprints
spelling	ump-98652018-10-16T03:28:36Z http://umpir.ump.edu.my/id/eprint/9865/ Sound Intensity Mapping of an Engine Dynamometer M. S. M., Sani M. M., Rahman M. Z., Baharom I., Zaman TJ Mechanical engineering and machinery This paper presents an investigation of the noise source identification (NSI) in a diesel engine at different engine speeds. An experiment was conducted utilizing an eddy current dynamometer with a sound intensity mapping method for the engine speed range of 1500 rpm to 2000 rpm. The noise source of the flywheel cover and manifold are presented. It can be observed that the critical cut-off frequency is 1250 Hz. The sound level powers are within the range of 86.42 dB to 96.34 dB in varying engine speeds. Further, the noise level is found to be increasing with engine speed. Another main source of vibration is engine mounting, which has a significant effect on noise level due to the engine’s structural vibration transfer and noise radiation behavior with respect to the excitation mechanism. The noise power level for mounting is within the range of 77.17 dB to 89.96 dB for an engine speed of 1500 rpm to 2000 rpm. This method can be applied on-site rather than in an anechoic chamber as long as the background noises are stationary. The project delivers a reliable input for the engineering practice to reduce engine noise level. Universiti Malaysia Pahang 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9865/1/Sound%20Intensity%20Mapping%20Of%20An%20Engine%20Dynamometer.pdf M. S. M., Sani and M. M., Rahman and M. Z., Baharom and I., Zaman (2015) Sound Intensity Mapping of an Engine Dynamometer. International Journal of Automotive and Mechanical Engineering (IJAME), 12. pp. 2820-2829. ISSN 2229-8649 (Print); 2180-1606 (Online) http://dx.doi.org/10.15282/ijame.12.2015.2.0237 DOI: 10.15282/ijame.11.2015.56.0237
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery M. S. M., Sani M. M., Rahman M. Z., Baharom I., Zaman Sound Intensity Mapping of an Engine Dynamometer
description	This paper presents an investigation of the noise source identification (NSI) in a diesel engine at different engine speeds. An experiment was conducted utilizing an eddy current dynamometer with a sound intensity mapping method for the engine speed range of 1500 rpm to 2000 rpm. The noise source of the flywheel cover and manifold are presented. It can be observed that the critical cut-off frequency is 1250 Hz. The sound level powers are within the range of 86.42 dB to 96.34 dB in varying engine speeds. Further, the noise level is found to be increasing with engine speed. Another main source of vibration is engine mounting, which has a significant effect on noise level due to the engine’s structural vibration transfer and noise radiation behavior with respect to the excitation mechanism. The noise power level for mounting is within the range of 77.17 dB to 89.96 dB for an engine speed of 1500 rpm to 2000 rpm. This method can be applied on-site rather than in an anechoic chamber as long as the background noises are stationary. The project delivers a reliable input for the engineering practice to reduce engine noise level.
format	Article
author	M. S. M., Sani M. M., Rahman M. Z., Baharom I., Zaman
author_facet	M. S. M., Sani M. M., Rahman M. Z., Baharom I., Zaman
author_sort	M. S. M., Sani
title	Sound Intensity Mapping of an Engine Dynamometer
title_short	Sound Intensity Mapping of an Engine Dynamometer
title_full	Sound Intensity Mapping of an Engine Dynamometer
title_fullStr	Sound Intensity Mapping of an Engine Dynamometer
title_full_unstemmed	Sound Intensity Mapping of an Engine Dynamometer
title_sort	sound intensity mapping of an engine dynamometer
publisher	Universiti Malaysia Pahang
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/ http://umpir.ump.edu.my/id/eprint/9865/1/Sound%20Intensity%20Mapping%20Of%20An%20Engine%20Dynamometer.pdf
first_indexed	2023-09-18T22:08:52Z
last_indexed	2023-09-18T22:08:52Z
_version_	1777414892725207040

Sound Intensity Mapping of an Engine Dynamometer

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