Low speed marine diesel engine diagnosis based on passive experiment

• Autorzy: Polanowski S. , Pawletko R.
• Języki publikacji: EN

Abstrakty

EN

Analysis of the indicator diagram is the basis of technical state evaluation of marine diesel engines. The indicator diagram contains a large amount of diagnostic information. In most cases, analysis of the graph is reduced to determination only the maximum pressure or mean indicated pressure. It seems appropriate to determine the possibility of use heat release characteristics for the diagnostic purpose. The paper presents results of studies related to the use of indicator diagrams for the diagnosis of high power marine diesel engine. The results include a comprehensive approach to problems of use of the cylinder pressure curves for the evaluation of the technical condition of the engine. The problem of dynamic adjustment of the GMP position, smoothing distortions due to the impact of the channel and indicator valve were considered. Diagnostic analysis includes also the designation of the heat release characteristics on the basis of the curves pressure in the engine cylinder. The algorithms allow to determine both the curves of heat release rate q and the heat released Q. The curve of heat release rate q is a full equivalent to fuel injection pressure curve in the fuel pipes. It allows identification of the failure of the injection system. The curve of Q allows such determination and additional assessment of internal efficiency of the cylinder. The analyzed indicator diagrams were obtained during the sea voyage with the use of the stationary electronic indicator PREMET. The pressure sensor were placed on the indicator valves.

Słowa kluczowe

EN

marine combustion engines; heat release characteristics; indicator diagram analysis

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2012
• Tom: Vol. 7, no 2
• Strony: 161--166
• Opis fizyczny: Bibliogr. 4 poz., rys., tab.

Twórcy

autor

Polanowski S.

autor

Pawletko R.

• Gdynia Maritime Univeristy ul. Morska 81-87, 81-226 Gdynia, Poland tel.: [phone],

Bibliografia

• [1] Pawletko, R., Polanowski, S., Research of the influence of marine diesel engine Sulzer AL 25/30 load on the TDC position on the indication graph. Journal of Kones Powertrain and Transport, Vol. 17, No. 3, Warsaw 2010.
• [2] Polanowski, S., Determination of location of Top Dead Centre and compression ratio value on the basis of ship engine indicator diagram, Polish Maritime Research № 2(56), 2008, Vol. 15.
• [3] Rychter, T., Teodorczyk, A., Modelowanie matematyczne roboczego cyklu silnika tłokowego, PWN Warszawa (1990) – in polish
• [4] Heywood, J.B., Internal Combustion Engine Fundamentals, McGraw-Hill, 1988 – 930.