Exhaust Gas Temperature Measurements in Diagnostics of Turbocharged Marine Internal Combustion Engines Part I Standard Measurements

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Abstract

The article discusses the problem of diagnostic informativeness of exhaust gas temperature measurements in turbocharged marine internal combustion engines. Theoretical principles of the process of exhaust gas flow in turbocharger inlet channels are analysed in its dynamic and energetic aspects. Diagnostic parameters are defined which enable to formulate general evaluation of technical condition of the engine based on standard online measurements of the exhaust gas temperature. A proposal is made to extend the parametric methods of diagnosing workspaces in turbocharged marine engines by analysing time-histories of enthalpy changes of the exhaust gas flowing to the turbocompressor turbine. Such a time-history can be worked out based on dynamic measurements of the exhaust gas temperature, performed using a specially designed sheathed thermocouple.

The first part of the article discusses possibilities to perform diagnostic inference about technical condition of a marine engine with pulse turbocharging system based on standard measurements of exhaust gas temperature in characteristic control cross-sections of its thermal and flow system. Selected metrological issues of online exhaust gas temperature measurements in those engines are discusses in detail, with special attention being focused on the observed disturbances and thermodynamic interpretation of the recorded measuring signal. Diagnostic informativeness of the exhaust gas temperature measurements performed in steady-state conditions of engine operation is analysed in the context of possible evaluations of technical condition of the engine workspaces, the injection system, and the fuel delivery process.

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  • 1. Korczewski Z.: An entropy function application within the selection process of diagnostic parameters of marine diesel and gas turbine engines. Polish Maritime Research 2(65)/2010 Vol.17 p. 29-35.

  • 2. Korczewski Z.: Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part III. Diagnostic and operating tolerances. Polish Maritime Research No. 4(71)/2011 Vol.18 p. 49-53.

  • 3. Korczewski Z.: Analysing possible use of the diagnostic model of internal combustion engine piston-crankshaft systems and evaluating its practical applicability to rational control of the process of their operation taking into account the expert system (in Polish). Work within the framework of the Research Project No. N509 494638 financed by MNiSW. Gdansk University of Technology 2012.

  • 4. Korczewski Z. Zacharewicz M.: Alternative diagnostic method applied on marine diesel engines having limited monitoring susceptibility. Transactions of the Institute of Measurement and Control Great Britain SAGE - Vol. 34 No. 8/December/2012 2012 p. 937-946.

  • 5. Kluj S.: Diagnostics of marine equipment (in Polish). Monographic publication. AM Gdynia 2000.

  • 6. Pfriem H.: Zur messung vernderlicher temperaturen von gasen und flssigkeiten (On the measurement of fluctuating temperatures of gases and fluids). Forschung auf dem Gebiete des Ingenieurwesens7(2)/1936 pp. 85-92 (in German).

  • 7. Piotrowski I. Witkowski K.: Operation of marine internal combustion engines (in Polish). Monographic publication. Gdynia Maritime Academy Gdynia 2002.

  • 8. Rychter T. Teodorczyk A.: Theory of piston engines (in Polish). WKiŁ Warszawa 2006.

  • 9. Scott W.: Diagnosing Causes of High EGT in Marine Engines. Marine Machinery Engines & Controls. Edited by Lamar Stonecypher (updated: 11/2/2011).

  • 10. Wisłocki K.: Turbocharging systems for high-speed internal combustion engines (in Polish) WKiŁ Warsaw 1991.

  • 11. Wiśniewski S.: Technical thermodynamics (in Polish). WNT Warsaw 2005.

  • 12. Wiśniewski S.: Temperature measurements in tests of engines and thermal facilities (in Polish). WNT Warsaw 1983.

  • 13. Woodyard D.: Pounders marine diesel engines and gas turbine. Great Britain ELSEVIER 2004 (eighth edition).

  • 14. Wojnowski W.: Marine internal combustion engine power plants (in Polish). Part I. Polish Naval Academy. Gdynia 1998.

  • 15. www.intercars.com.pl

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