Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement

D. Zhen, T. Wang, F. Gu, V. T. Tran, A. D. Ball

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise produced by the combustion process. The experiment with different loads and speeds was conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesel (B50 and B100) and normal pure diesel. The signals of vibration, acoustic and the in-cylinder pressure were measured for analysing the engine combustion. In order to examine these signals, a coherent power spectrum analysis method is used to investigate the engine noise signals for locating the frequency band which is closely related to the combustion process. Subsequently, the Wigner-Ville distribution is employed to analyse the energy distribution of engine noise in the time-frequency domain. A band-pass filter based on fractional Fourier transform is developed to extract the main combustion induced noise from the engine noise for comparison. The interim results show that the sound energy level of combustion noise of engine fuelled by biodiesel and its blends is higher than that of engine fuelled by diesel. This is also identical to the variation of in-cylinder pressure. Hence, acoustic signals of the CI engine provide useful features for remote engine condition monitoring and supply fuel monitoring.

Original languageEnglish
Title of host publication9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012
PublisherBritish Institute of Non-Destructive Testing
Pages85-97
Number of pages13
Volume1
ISBN (Print)9781622764334
Publication statusPublished - 2012
Event9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies - London, United Kingdom
Duration: 12 Jun 201214 Jun 2012
Conference number: 9

Conference

Conference9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies
Abbreviated titleCM / MFPT 2012
CountryUnited Kingdom
CityLondon
Period12/06/1214/06/12

Fingerprint

Biodiesel
Ignition
Acoustics
Engines
Engine cylinders
Wigner-Ville distribution
Direct injection
Condition monitoring
Power spectrum
Bandpass filters
Acoustic noise
Spectrum analysis
Electron energy levels
Frequency bands
Vibrations (mechanical)
Diesel engines
Fourier transforms
Acoustic waves
Monitoring

Cite this

Zhen, D., Wang, T., Gu, F., Tran, V. T., & Ball, A. D. (2012). Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement. In 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012 (Vol. 1, pp. 85-97). British Institute of Non-Destructive Testing.
Zhen, D. ; Wang, T. ; Gu, F. ; Tran, V. T. ; Ball, A. D. / Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement. 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012. Vol. 1 British Institute of Non-Destructive Testing, 2012. pp. 85-97
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title = "Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement",
abstract = "In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise produced by the combustion process. The experiment with different loads and speeds was conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesel (B50 and B100) and normal pure diesel. The signals of vibration, acoustic and the in-cylinder pressure were measured for analysing the engine combustion. In order to examine these signals, a coherent power spectrum analysis method is used to investigate the engine noise signals for locating the frequency band which is closely related to the combustion process. Subsequently, the Wigner-Ville distribution is employed to analyse the energy distribution of engine noise in the time-frequency domain. A band-pass filter based on fractional Fourier transform is developed to extract the main combustion induced noise from the engine noise for comparison. The interim results show that the sound energy level of combustion noise of engine fuelled by biodiesel and its blends is higher than that of engine fuelled by diesel. This is also identical to the variation of in-cylinder pressure. Hence, acoustic signals of the CI engine provide useful features for remote engine condition monitoring and supply fuel monitoring.",
keywords = "Biodiesel, CI engine, Combustion, Condition monitoring, Vibro-acoustics",
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Zhen, D, Wang, T, Gu, F, Tran, VT & Ball, AD 2012, Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement. in 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012. vol. 1, British Institute of Non-Destructive Testing, pp. 85-97, 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies, London, United Kingdom, 12/06/12.

Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement. / Zhen, D.; Wang, T.; Gu, F.; Tran, V. T.; Ball, A. D.

9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012. Vol. 1 British Institute of Non-Destructive Testing, 2012. p. 85-97.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement

AU - Zhen, D.

AU - Wang, T.

AU - Gu, F.

AU - Tran, V. T.

AU - Ball, A. D.

PY - 2012

Y1 - 2012

N2 - In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise produced by the combustion process. The experiment with different loads and speeds was conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesel (B50 and B100) and normal pure diesel. The signals of vibration, acoustic and the in-cylinder pressure were measured for analysing the engine combustion. In order to examine these signals, a coherent power spectrum analysis method is used to investigate the engine noise signals for locating the frequency band which is closely related to the combustion process. Subsequently, the Wigner-Ville distribution is employed to analyse the energy distribution of engine noise in the time-frequency domain. A band-pass filter based on fractional Fourier transform is developed to extract the main combustion induced noise from the engine noise for comparison. The interim results show that the sound energy level of combustion noise of engine fuelled by biodiesel and its blends is higher than that of engine fuelled by diesel. This is also identical to the variation of in-cylinder pressure. Hence, acoustic signals of the CI engine provide useful features for remote engine condition monitoring and supply fuel monitoring.

AB - In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise produced by the combustion process. The experiment with different loads and speeds was conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesel (B50 and B100) and normal pure diesel. The signals of vibration, acoustic and the in-cylinder pressure were measured for analysing the engine combustion. In order to examine these signals, a coherent power spectrum analysis method is used to investigate the engine noise signals for locating the frequency band which is closely related to the combustion process. Subsequently, the Wigner-Ville distribution is employed to analyse the energy distribution of engine noise in the time-frequency domain. A band-pass filter based on fractional Fourier transform is developed to extract the main combustion induced noise from the engine noise for comparison. The interim results show that the sound energy level of combustion noise of engine fuelled by biodiesel and its blends is higher than that of engine fuelled by diesel. This is also identical to the variation of in-cylinder pressure. Hence, acoustic signals of the CI engine provide useful features for remote engine condition monitoring and supply fuel monitoring.

KW - Biodiesel

KW - CI engine

KW - Combustion

KW - Condition monitoring

KW - Vibro-acoustics

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UR - http://www.proceedings.com/16283.html

M3 - Conference contribution

SN - 9781622764334

VL - 1

SP - 85

EP - 97

BT - 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012

PB - British Institute of Non-Destructive Testing

ER -

Zhen D, Wang T, Gu F, Tran VT, Ball AD. Combustion analysis of a CI engine with biodiesel blends based on vibro-acoustic measurement. In 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012. Vol. 1. British Institute of Non-Destructive Testing. 2012. p. 85-97