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A MODEL OF FUEL COMBUSTION PROCESS IN THE MARINE RECIPROCATING ENGINE WORK SPACE TAKING INTO ACCOUNT LOAD AND WEAR OF CRANKSHAFT-PISTON ASSEMBLY AND THE THEORY OF SEMI-MARKOV PROCESSES

Abstract

The article analyses the operation of reciprocal internal combustion engines, with marine engines used as an example. The analysis takes into account types of energy conversion in the work spaces (cylinders) of these engines, loads of their crankshaft-piston assemblies, and types of fuel combustion which can take place in these spaces during engine operation. It is highlighted that the analysed time-dependent loads of marine internal combustion engine crankshaftpiston assemblies are random processes. It is also indicated that the wear of elements of those assemblies resulting from their load should also be considered a random process. A hypothesis is formulated which explains random nature of load and the absence of the theoretically expected detonation combustion in engines supplied with such fuels as Diesel Oil, Marine Diesel Oil, and Heavy Fuel Oil. A model is proposed for fuel combustion in an arbitrary work space of a marine Diesel engine, which has the form of a stochastic four-state process, discrete in states and continuous in time. The model is based on the theory of semi-Markov processes.

Keywords:

engine load, marine internal combustion engine, probability, semi-Markov process, crankshaft-piston assembly

Details

Issue
Vol. 23 No. 3(91) (2016)
Section
Latest Articles
Published
20-10-2016
DOI:
https://doi.org/10.1515/pomr-2016-0031
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

Jerzy Girtler

Gdańsk University of Technology

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