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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

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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