Diesel Engine Diagnosis Based on Analysis of the Crankshaft's Speed Variation
The variation of the crankshaft's speed is influenced by the action of the cylinders and shall reflect the contribution of each cylinder to the total engine output. At the same time, the speed variation is influenced by the torsional stiffness of the cranks, the mass moments of inertia of the reciprocating mechanisms and the average speed and load of the engine. As the result, the variation of angular motion of the crankshaft is complex, each particular influence changing its importance as speed and load are modified. The diagnostic method presented in the paper is based on the analysis of the amplitudes and phases of the lowest harmonic orders of the measured speed and is capable to determine the average Indicated Mean Effective Pressure (IMEP), to detect nonuniformities in cylinder operation and to identify the faulty cylinder(s).
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
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Supplemental Notes:
- Abstract reprinted with permission of SAE International.
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Authors:
- Taraza, Dinu
- Henein, Naeim A
- Bryzik, Walter
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Conference:
- International Fall Fuels and Lubricants Meeting and Exposition
- Location: San Francisco California, United States
- Date: 1998-10-19 to 1998-10-22
- Publication Date: 1998-10-19
Language
- English
Media Info
- Media Type: Web
- Features: References;
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Serial:
- SAE Technical Paper
- Publisher: Society of Automotive Engineers (SAE)
- ISSN: 0148-7191
- EISSN: 2688-3627
- Serial URL: http://papers.sae.org/
Subject/Index Terms
- TRT Terms: Crankshafts; Diagnostic tests; Diesel engines; Engine cylinders; Engine performance
- Subject Areas: Highways; Maintenance and Preservation; Vehicles and Equipment;
Filing Info
- Accession Number: 01907515
- Record Type: Publication
- Source Agency: SAE International
- Report/Paper Numbers: 982540
- Files: TRIS, SAE
- Created Date: Feb 7 2024 4:52PM