Modal properties diagnostics of the high-pressure fuel injection pipes in off-road diesel engine

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dc.contributor.authorOtipka, Václavcs
dc.contributor.authorZajac, Romancs
dc.contributor.authorProkop, Alešcs
dc.contributor.authorŘehák, Kamilcs
dc.coverage.issue1cs
dc.coverage.volume9cs
dc.date.issued2021-03-19cs
dc.description.abstractInjection systems of modern commercial vehicle power units are still a frequent topic for development engineers in terms of durability and reliability. Therefore, the content of this study is just an investigation of the dynamic behaviour of high-pressure injection pipes of a four-cylinder combustion engine. The modal properties of the injection tubes are evaluated by experimental modal analysis (EMA). Another phase of the measurements is the sensing and analysing of the acceleration on each injection pipe during the engine speed ramp in the entire range of the speed spectrum. There was investigated the modal behaviour of the structure to the operational character of the excitation. The work includes a numerical model established by finite element method (FEM), where the boundary conditions correspond to the real installation of injection pipes from the measurement. The modal properties of injection pipes were primarily investigated through the numerical approach, several variants of pipe attachments were considered in simulations. Comparing the FEM results of different pipe attachments, the suitability of the clamp position with respect to the specific installation in the power unit from the measurement is discussed. From the evaluated results, it is possible to assume the dynamic behaviour of the high-pressure injection pipe in the power unit. Based on the performed analyses, the critical mode shapes of the injection pipes are described considering the engine operating condition. When the engine speed frequency and some pipe eigen frequency interfere together, it is undesirable state. In many cases, this leads to a crack initiation and subsequent damage of the injection pipes during the cyclic load. The presented results and conclusions in this study should improve the overall knowledge on high-pressure fuel pipes in terms of modal properties and its vibration behaviour during operating condition.en
dc.formattextcs
dc.format.extent48-57cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Measurements in Engineering. 2021, vol. 9, issue 1, p. 48-57.en
dc.identifier.doi10.21595/jme.2021.21823cs
dc.identifier.issn2335-2124cs
dc.identifier.orcid0000-0002-9139-9939cs
dc.identifier.orcid0000-0002-3489-532Xcs
dc.identifier.orcid0000-0002-7526-1366cs
dc.identifier.orcid0000-0001-5053-9774cs
dc.identifier.other174981cs
dc.identifier.researcheridABB-6729-2021cs
dc.identifier.researcheridIWE-1849-2023cs
dc.identifier.researcheridE-3189-2019cs
dc.identifier.scopus57204481598cs
dc.identifier.scopus57204356453cs
dc.identifier.scopus57055245100cs
dc.identifier.scopus55095894500cs
dc.identifier.urihttp://hdl.handle.net/11012/203008
dc.language.isoencs
dc.publisherJVE Internationalcs
dc.relation.ispartofJournal of Measurements in Engineeringcs
dc.relation.urihttps://www.jvejournals.com/article/21823cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2335-2124/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecthigh-pressure pipesen
dc.subjecteigen frequenciesen
dc.subjectmeasurementen
dc.subjectFEMen
dc.titleModal properties diagnostics of the high-pressure fuel injection pipes in off-road diesel engineen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-174981en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:47:59en
sync.item.modts2025.01.17 16:42:32en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav automobilního a dopravního inženýrstvícs
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