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TECHNICAL PAPERS: Internal Combustion Engines

The Frequency Analysis of the Crankshaft’s Speed Variation: A Reliable Tool for Diesel Engine Diagnosis

[+] Author and Article Information
D. Taraza, N. A. Henein

Department of Mechanical Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202

W. Bryzik

U.S. Army–TARDEC, Mail Stop 121, Warren, MI 48397-5000

J. Eng. Gas Turbines Power 123(2), 428-432 (Dec 06, 2000) (5 pages) doi:10.1115/1.1359479 History: Received February 09, 2000; Revised December 06, 2000
Copyright © 2001 by ASME
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References

Williams, J., “An Overview of Misfiring Cylinder Engine Diagnostic Techniques Based on Crankshaft Angular Velocity Measurements,” SAE Paper 960039.
Brown, T. S., and Neil, W. S., “Determination of Engine Cylinder Pressures from Crankshaft Speed Fluctuations,” SAE Paper 920463.
Ben-Ari, J., deBotton, G., Itzaki, R., and Sher, E., “Fault Detection in Internal Combustion Engines by the Vibration Analysis Method,” SAE Paper 1999-01-1223.
Foerster, J., Lohmann, A., Mezger, M., and Ries-Mueller, K., “Advanced Engine Misfire Detection for SI-Engines,” SAE Paper 970855.
Azzoni, P. M., Moro, D., Porceddu-Cilione, C. M., and Rizzoni, G., “Misfire Detection in a High-Performance Engine by the Principal Component Analysis Approach,” SAE Paper 960622.
Henein, N. A., Bryzik, W., Taylor, C., and Nichols A., “Dynamic Parameters for Engine Diagnostics: Effect of Sampling,” SAE Paper 932411.
Guezenec Y. G., and Gyan Ph., “A Novel Approach to Real-Time Estimation of the Individual Cylinder Combustion Pressure for S.I. Engine Control,” SAE Paper 1999-01-0209.
Citron, S. J., O’Higgins, J. E., and Chen, L. Y., “Cylinder by Cylinder Engine Pressure and Pressure Torque Waveform Determination Utilizing Speed Fluctuation,” SAE Paper 890486.
Kronberger, M., 1989, “Einzelzylinder-Regelung beim Fahrzeugdieselmotor—Rechnerunterstutzte Simulation und Versuchergebnisse,” 10 Internationales Wiener Motorensymposium, Apr. 27–28, VDI Fortschritt-Berichte, Reihe 12 Verkehrstechnik/Fahrzeugtechnik Nr. 122, VDI Verlag.
Iida, K., Akishino, K., and Kido, K., “IMEP Estimation from Instantaneous Crankshaft Torque Variation,” SAE Paper 900617.
Chen, K. S., and Chen, S., “Engine Diagnostics by Dynamic Shaft Measurement: A Progress Report,” SAE Paper 932412.
Taraza, D., “Possibilities to Reconstruct Indicator Diagrams by Analysis of the Angular Motion of the Crankshaft,” SAE Paper 932414.
Champoussin, J. C., and Ginoux, S., “Engine Torque Determination by Crank Angle Measurements: State of the Art, Future Prospects,” SAE Paper 970532.
Taraza, D., Henein, A. N., and Bryzik, W., “Determination of the Gas-Pressure Torque of a Multicylinder Engine from Measurements of the Crankshaft’s Speed Variation,” SAE Paper 980164.
Hafner, K. E., and Maass, H., 1985, Torsionsschwingungen in der Verbrennungskraftmaschine, Springer-Verlag, Wien.
Chen, K. S., and Chang, T., “Crankshaft Torsional and Damping Simulation—An Update and Correlation with Test Results,” SAE Paper 861226.

Figures

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Typical phase angle diagrams of a four-stroke, four-cylinder engine and the corresponding lowest harmonic order
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Typical phase angle diagrams of a four-stroke, six-cylinder engine and the corresponding lowest harmonic order
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Frequency spectrum of the resultant gas-pressure torque for the four-cylinder engine, idling at 720 rpm
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Frequency spectra of the resultant gas-pressure torque. Six-cylinder engine, 1200 rpm.
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Frequency spectra of the resultant gas-pressure torque. Six-cylinder engine, 1200 rpm.
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Frequency spectra of the crankshaft’s speed. Six-cylinder engine, 1200 rpm.
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Frequency spectra of the crankshaft’s speed. Six-cylinder engine, 1200 rpm.
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Average gas-pressure torque as a function of the amplitude of the third harmonic order of the measured speed
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Identification of a faulty cylinder from the phases of the lowest three harmonic orders of the crankshaft’s speed

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