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Design of a tribotechnical diagnostics model for determining the technical condition of an internal combustion engine during its life cycle

Furch Jan, Jelínek Josef

Eksploatacja i Niezawodność

2022

Vol. 24, no. 3

437--445

The paper proposes a model of tribotechnical diagnostics, which allows us to determine the technical condition of an internal combustion engine within its life cycle and then take measures, including its decommissioning due to excessive wear of major components. The paper also focuses on tribodiagnostic methods that are suitable for assessing the technical condition of internal combustion engines used in various means of transport (automobiles, railway locomotives powered by internal combustion engines, aircraft powered by reciprocating internal combustion engines, special and garden equipment). An internal combustion engine from agricultural equipment was selected for the experiment and monitored throughout its life cycle. The paper describes in detail the appropriate methods used for the proposed tribotechnical diagnostics model, including the results from the measurements by these methods. The said methods were then evaluated and mutually compared. The following advanced instrumental analytical methods were used to evaluate the collected engine oil samples: atomic emission spectrometry (AES), ferrography, automatic laser counter and LNF particle classifier, FTIR infrared spectrometry. The result of the work (paper) is the design of a tribotechnical diagnostics model for determining the technical condition of an internal combustion engine during its life cycle and the determination of limit values for assessing the technical condition of a Honda GCV 165 internal combustion engine. The results are based on individual measurements.

Diagnosis of aircraft engines tribological systems with the ferrography method

Deliś M.

Journal of KONBiN

2011

No. 1 (17)

67--74

The paper presents the diagnosing possibility of aircraft engines tribological systems with the ferrography method. Characteristics and application of method have been discussed. The examples of results obtained from analysis of selected types of systems was given.

W artykule przedstawiono zastosowanie metody ferrograficznej do oceny stanu technicznego układów tribologicznych lotniczych zespołów napędowych. Omówiono charakterystykę i zastosowanie metody. Podano przykłady uzyskiwanych wyników badań z analiz wybranych typów układów.

Failure analysis and predictive maintenance of aircraft components

Eliaz N.

Advances in Materials Science

2007

Vol. 7, nr 2(12)

13-25

Implementation of routine condition monitoring techniques, failure analysis protocols and complementary specific research and development (R&D) activities is valuable in preventing failure recurrence. Ferrography is a common technique for condition monitoring, in which small (wear) particles are isolated on a glass slide based upon the interaction between an external magnetic field and the magnetic moments of the particles suspended in a flow stream. Here, the application of ferrography in monitoring the health of aircraft assemblies is reviewed. In addition, several definitions of important terms related to failure analysis are provided, and a recommended failure analysis protocol is discussed. Finally, several case studies of aircraft components that failed due to corrosion-involving mechanisms are summarized, and an example of the application of R&D projects for improved quality assurance and prevention of failure occurrence is given.