Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis
In this study a coupled thermodynamics and crankshaft dynamics model of a large two-stroke diesel engine was utilised, to map the relationship of the engine Instantaneous Crankshaft Torque (ICT) with the following frequently occurring malfunctioning conditions: (<b>a</b>) change in Start...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/8/3522 |
| _version_ | 1797537687447535616 |
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| author | Konstantinos-Marios Tsitsilonis Gerasimos Theotokatos |
| author_facet | Konstantinos-Marios Tsitsilonis Gerasimos Theotokatos |
| author_sort | Konstantinos-Marios Tsitsilonis |
| collection | DOAJ |
| description | In this study a coupled thermodynamics and crankshaft dynamics model of a large two-stroke diesel engine was utilised, to map the relationship of the engine Instantaneous Crankshaft Torque (ICT) with the following frequently occurring malfunctioning conditions: (<b>a</b>) change in Start of Injection (SOI), (<b>b</b>) change in Rate of Heat Release (RHR), (<b>c</b>) change in scavenge air pressure, and (<b>d</b>) blowby. This was performed using frequency analysis on the engine ICT, which was obtained through a series of parametric runs of the coupled engine model, under the various malfunctioning and healthy operating conditions. This process demonstrated that engine ICT can be successfully utilised to identify the distinct effects of malfunctions (<b>c</b>) or (<b>d</b>), as they occur individually in any cylinder. Furthermore by using the same process, malfunctions (<b>a</b>) and (<b>b</b>) can be identified as they occur individually for any cylinder, however there is no distinct effect on the engine ICT among these malfunctions, since their effect on the in-cylinder pressure is similar. As a result, this study demonstrates the usefulness of the engine ICT as a non-intrusive diagnostic measurement, as well as the benefits of malfunctioning conditions mapping, which allows for quick and less resource intensive identification of engine malfunctions. |
| first_indexed | 2024-03-10T12:19:47Z |
| format | Article |
| id | doaj.art-e311c11f470e4fb092c940969c2d1c36 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T12:19:47Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e311c11f470e4fb092c940969c2d1c362023-11-21T15:37:30ZengMDPI AGApplied Sciences2076-34172021-04-01118352210.3390/app11083522Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement AnalysisKonstantinos-Marios Tsitsilonis0Gerasimos Theotokatos1Datum Electronics Ltd., 37 Castle St, East Cowes PO32 6EZ, UKDepartment of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, 100 Montrose St, Glasgow G4 0LZ, UKIn this study a coupled thermodynamics and crankshaft dynamics model of a large two-stroke diesel engine was utilised, to map the relationship of the engine Instantaneous Crankshaft Torque (ICT) with the following frequently occurring malfunctioning conditions: (<b>a</b>) change in Start of Injection (SOI), (<b>b</b>) change in Rate of Heat Release (RHR), (<b>c</b>) change in scavenge air pressure, and (<b>d</b>) blowby. This was performed using frequency analysis on the engine ICT, which was obtained through a series of parametric runs of the coupled engine model, under the various malfunctioning and healthy operating conditions. This process demonstrated that engine ICT can be successfully utilised to identify the distinct effects of malfunctions (<b>c</b>) or (<b>d</b>), as they occur individually in any cylinder. Furthermore by using the same process, malfunctions (<b>a</b>) and (<b>b</b>) can be identified as they occur individually for any cylinder, however there is no distinct effect on the engine ICT among these malfunctions, since their effect on the in-cylinder pressure is similar. As a result, this study demonstrates the usefulness of the engine ICT as a non-intrusive diagnostic measurement, as well as the benefits of malfunctioning conditions mapping, which allows for quick and less resource intensive identification of engine malfunctions.https://www.mdpi.com/2076-3417/11/8/3522instantaneous crankshaft torquefrequency analysistwo-stroke diesel engineengine harmonic frequenciesmalfunctioning conditions mappingthermodynamics model |
| spellingShingle | Konstantinos-Marios Tsitsilonis Gerasimos Theotokatos Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis Applied Sciences instantaneous crankshaft torque frequency analysis two-stroke diesel engine engine harmonic frequencies malfunctioning conditions mapping thermodynamics model |
| title | Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis |
| title_full | Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis |
| title_fullStr | Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis |
| title_full_unstemmed | Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis |
| title_short | Engine Malfunctioning Conditions Identification through Instantaneous Crankshaft Torque Measurement Analysis |
| title_sort | engine malfunctioning conditions identification through instantaneous crankshaft torque measurement analysis |
| topic | instantaneous crankshaft torque frequency analysis two-stroke diesel engine engine harmonic frequencies malfunctioning conditions mapping thermodynamics model |
| url | https://www.mdpi.com/2076-3417/11/8/3522 |
| work_keys_str_mv | AT konstantinosmariostsitsilonis enginemalfunctioningconditionsidentificationthroughinstantaneouscrankshafttorquemeasurementanalysis AT gerasimostheotokatos enginemalfunctioningconditionsidentificationthroughinstantaneouscrankshafttorquemeasurementanalysis |