Quantumness in diagnostics of marine internal combustion engines and other ship power plant machines

• Autorzy: Girtler Jerzy , Rudnicki Jacek

Identyfikatory

DOI

10.2478/pomr-2023-0064

• Języki publikacji: EN

Abstrakty

EN

The article provides proof that the diagnostics of marine internal combustion engines and other ship power plant machines should take into account the randomness and unpredictability of certain events, such as wear, damage, the variations of mechanical and thermal loads, etc., which take place during machine operation. In the article, the energy E, like the other forms (methods) that it can be converted into (heat and work), is considered the random variable Et; at time t, this variable has the mean value , which is the observed value of the statistic with an asymptotically normal distribution , irrespective of the functional form of the random variable Et. A proof is given that shows that the expected value estimated in the above way, considering the time t of the performance of task Z by a marine internal combustion engine or other ship power plant machine, can be used to determine the machine’s possible action (DM). When compared to the required action (DW) needed for task Z to be performed, this possible action makes it possible to formulate an operating diagnosis concerning whether the engine or machine of concern is able to perform task Z. It is assumed that an energy device of this type is able to perform a given task when the inequality DM≥DW holds. Otherwise, when DM < DW, the device cannot perform the task for which it was adopted in the design and manufacturing phase, which means that it is in the incapability state, although it still can be started and convert energy into the form of heat or work.

Słowa kluczowe

EN

diagnostics; stochastic proces; internal combustion engine; random variable

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2023
• Tom: nr 4
• Strony: 110--119
• Opis fizyczny: Bibliogr. 40 poz., rys.

Twórcy

autor

Girtler Jerzy

• Gdansk University of Technology, Institute of Naval Architecture, Gdansk, Poland

• https://orcid.org/0000-0001-5014-422X

autor

Rudnicki Jacek

• Gdansk University of Technology, Institute of Naval Architecture, Gdansk, Poland

• https://orcid.org/0000-0003-4337-9981

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).