Influence of clogged injector nozzles on the heat release characteristics

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

Abstrakty

EN

The paper presents the results of research of the influence of clogged injector nozzles in fuel injection system on the shape of heat release characteristics. The study was conducted on a laboratory four-stroke marine engine, type Sulzer 3Al 25/30, with nominal power Ne = 408 kW at nominal rotational speed n = 750 rpm. The study was carried out according to active experiment plan, during which the engine failure of the injection system was simulated. Simulation of loss of patency of injector nozzles (clogged) was to completely clog two holes of nine injection injector nozzle holes with a diameter of 0,325 mm. Measurements were made at a constant engine speed of 750 rev/min for five loads: 50, 100, 150, 200, 250 kW. Measurements of pressure of combustion were performed by means of tensometric sensors of Spice Company. Based on measured pressure curves heat release characteristics were determined. The algorithm allows the determination of net heat release rate q and the net generated heat Q characteristics. Based on the obtained results it can be concluded that significant improvement in the diagnostic use of indicator diagrams can be obtained by using heat release characteristics. These characteristics are correlated with the process of fuel injection and the injection pump operation. As demonstrated in the work of analysing the heat release rate q, it is possible to infer diagnosis on the technical condition of the fuel injection system.

Słowa kluczowe

EN

indicator diagram; heat release characteristics; marine diesel engine diagnosis

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 3
• Strony: 307--314
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Pawletko R.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland

autor

Polanowski S.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland

Bibliografia

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• [3] Dereszewski, M., Analysis of crankshaft’s angular velocity waveforms as a method of long term monitoring of engine performance quality, Scientific Journals Maritime University of Szczecin, 28(100), Z. 1, pp. 14-18, Szczecin 2011.
• [4] 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.
• [5] 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), Vol. 15,Gdynia 2008.
• [6] Rychter, T., Teodorczyk, A., Modelowanie matematyczne roboczego cyklu silnika tłokowego, PWN, Warszawa 1990.
• [7] Wanszejdt, W. A. Sudowyje dwigatieli wnurenniego sgorania, Sudostrojenie, Leningrad 1977.