Noise source identification of engine dynamometer

This project presents the effort taken to determine the major source of the noise and verify the frequency resonance and amplitudes for different engine speed of the engine dynamometer in automotive research laboratory of Universiti Malaysia Pahang (UMP).The research describes the experimental set-u...

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Bibliographic Details
Main Author:	Ab Rahman, Mohd Nooh
Format:	Undergraduates Project Papers
Language:	English English English English
Published:	2008
Subjects:	TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://umpir.ump.edu.my/id/eprint/214/ http://umpir.ump.edu.my/id/eprint/214/ http://umpir.ump.edu.my/id/eprint/214/31/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Table%20of%20content.pdf http://umpir.ump.edu.my/id/eprint/214/9/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/214/7/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/214/10/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20References.pdf

id	ump-214
recordtype	eprints
spelling	ump-2142017-04-11T07:04:36Z http://umpir.ump.edu.my/id/eprint/214/ Noise source identification of engine dynamometer Ab Rahman, Mohd Nooh TL Motor vehicles. Aeronautics. Astronautics This project presents the effort taken to determine the major source of the noise and verify the frequency resonance and amplitudes for different engine speed of the engine dynamometer in automotive research laboratory of Universiti Malaysia Pahang (UMP).The research describes the experimental set-up and investigation of the mechanisms of engine dynamometer noise generation and the corresponding countermeasures employed during the engine performance tested. According to the analysis of acoustic signals and vibration signals measurement, an investigation of the noise source identification in a diesel engine is presented, and that the noise level of the diesel is comprehended. The experiment carried out with several altered parameters for flexibility investigation. With the sound intensity method, the results of the noise source of flywheel cover and exhaust were presented. The results of analysis showed that the 1250 Hz bands had the most significant contribution to the engine right noise. For the 1500rpm, 2000rpm and 2500rpm the sound power level are 86.42dB, 92.44 and 96.34dB respectively. These clearly show that higher rpm will increase the noise at the engine. Additionally mounting area noise for this engine also give significant effect with the value of 77.71dB for 1500rpm and 89.86db for 2500rpm due to the engine’s structural vibration transfer and noise radiation behavior with respect to the excitation mechanism. The research also provides the reliable basis for the engineering practice to reduce noise level. 2008-11 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/214/31/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Table%20of%20content.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/214/9/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20Abstract.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/214/7/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Chapter%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/214/10/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20References.pdf Ab Rahman, Mohd Nooh (2008) Noise source identification of engine dynamometer. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:40169&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English English
topic	TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TL Motor vehicles. Aeronautics. Astronautics Ab Rahman, Mohd Nooh Noise source identification of engine dynamometer
description	This project presents the effort taken to determine the major source of the noise and verify the frequency resonance and amplitudes for different engine speed of the engine dynamometer in automotive research laboratory of Universiti Malaysia Pahang (UMP).The research describes the experimental set-up and investigation of the mechanisms of engine dynamometer noise generation and the corresponding countermeasures employed during the engine performance tested. According to the analysis of acoustic signals and vibration signals measurement, an investigation of the noise source identification in a diesel engine is presented, and that the noise level of the diesel is comprehended. The experiment carried out with several altered parameters for flexibility investigation. With the sound intensity method, the results of the noise source of flywheel cover and exhaust were presented. The results of analysis showed that the 1250 Hz bands had the most significant contribution to the engine right noise. For the 1500rpm, 2000rpm and 2500rpm the sound power level are 86.42dB, 92.44 and 96.34dB respectively. These clearly show that higher rpm will increase the noise at the engine. Additionally mounting area noise for this engine also give significant effect with the value of 77.71dB for 1500rpm and 89.86db for 2500rpm due to the engine’s structural vibration transfer and noise radiation behavior with respect to the excitation mechanism. The research also provides the reliable basis for the engineering practice to reduce noise level.
format	Undergraduates Project Papers
author	Ab Rahman, Mohd Nooh
author_facet	Ab Rahman, Mohd Nooh
author_sort	Ab Rahman, Mohd Nooh
title	Noise source identification of engine dynamometer
title_short	Noise source identification of engine dynamometer
title_full	Noise source identification of engine dynamometer
title_fullStr	Noise source identification of engine dynamometer
title_full_unstemmed	Noise source identification of engine dynamometer
title_sort	noise source identification of engine dynamometer
publishDate	2008
url	http://umpir.ump.edu.my/id/eprint/214/ http://umpir.ump.edu.my/id/eprint/214/ http://umpir.ump.edu.my/id/eprint/214/31/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Table%20of%20content.pdf http://umpir.ump.edu.my/id/eprint/214/9/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/214/7/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/214/10/Noise%20source%20identification%20of%20engine%20dynamometer%20-%20References.pdf
first_indexed	2023-09-18T21:52:10Z
last_indexed	2023-09-18T21:52:10Z
_version_	1777413841289740288

Noise source identification of engine dynamometer

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