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  3. Volume 11, Number 2, 2025
  4. Determination of Critical Values of Parameters for Practical Application of Express Method of Diagnosing the Technical State of Shipboard Diesel Engines

Determination of Critical Values of Parameters for Practical Application of Express Method of Diagnosing the Technical State of Shipboard Diesel Engines

JEECS.
2025;
Volume 11, Number 2
: pp. 135 – 150
Received: September 17, 2025
Revised: October 23, 2025
Accepted: October 30, 2025
Authors:
  1. Kostiantyn Boriak
  2. Oleksandr Ihnatenko
1
Institute of Naval Forces of National University “Odessa Maritime Academy”
2
Institute of Naval Forces of National University “Odessa Maritime Academy”

This paper substantiates the feasibility and advisability of developing a new express method of diagnosing the state of diesel engines of combat boats based on the analysis of readings through on-board instruments of the information system for controlling and monitoring the boat’s powerplant. This express method will enable combat boats’ (ships’) crews to employ the predictive maintenance of shipboard mechanisms to promptly identify degradation processes during their operation and minimize the risk of unexpected failures (breakdowns) while performing the combat missions. The essence of the new method lies in constructing a model of diagnosing shipboard machinery based on the analysis of empirical criteria for the rates of change of the current values of the determining parameters in singled-out time ranges during engines heating-up. As a result of full-scale tests, the determining parameters were defined and their limiting normalized rates of change were established, exceeding which could lead to emergency situations.

shipboard diesel engine
determining parameter
heating-up mode
current values
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