RESEARCH PAPER
Selection of control diagnostic symptoms and technical state features of marine engine conventional injectors using multiple regression analysis
1
Maritime University of Szczecin, Poland
A – Conceptualization; B – Methodology; C – Software; D – Validation; E – Formal analysis; F – Investigation; G – Resources; H – Data curation; I – Writing – original draft; J – Writing – review & editing; K – Visualization; L – Supervision; M – Project administration; N – Funding acquisition
Submission date: 2026-01-15
Final revision date: 2026-05-15
Acceptance date: 2026-10-09
Online publication date: 2026-10-30
KEYWORDS
Marine injectorsDiagnostic symptomsState featuresMultiple linear regressionSymptoms selectionControlled state features
TOPICS
- Monitoring and diagnostics for maintenance of technical systems
- Maintenance economics for machines, devices and technical systems
- Quality and reliability for technical items
- Operation and maintenance processes for technical items
- Maintenance Engineering, Asset Management, Life Cycle Costs and Logistics
- Diagnostics, Condition Monitoring and Fault Detection
- Industrial Applications, Field Studies and Case Reports
- Artificial Intelligence and Data Science in Reliability and Maintenance
ABSTRACT
This article presents the results of a study of multivariate application statistics to approximate experimental test results. The influence of explanatory variables on the approximation using multiple regression was assessed using various quantities that affected the test conditions and technical state. Measurements of key injector performance features were made using various geometric and fuel dose measurement instruments. The diagnostic symptoms of the injector nozzle vibration displacement signals in the frequency domain, which are most correlated with relevant properties of the technical state and test conditions, were selected. The relevance of individual state features was tested by best fitting the diagnostic parameter model to the dependencies of the variables, including features, and the control quantities. The most useful symptom was the first component of the envelope amplitudes in the nozzle needle displacement spectra, and the most relevant properties of the injection apparatus's technical state were the injected fuel dose at the exact injection frequency.
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| ISSN: | 1507-2711 |
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