Diagnostic of malfunction of four stroke marine engine using harmonic components of combustion pressure waveforms

• Autorzy: Drewing S. , Dereszewski M.

Identyfikatory

DOI

10.5604/01.3001.0012.2782

• Języki publikacji: EN

Abstrakty

EN

The paper presents results of experimental measurements and analysis of combustion pressure and fuel pressure in high-pressure line before fuel valve. The aim of conducted experiments was detection of failures of high-pressure fuel system. Both pressure signals were recorded simultaneously and subsequently processed using FFT decomposition of obtained wavelets. The idea of comparison of both fuel and gas pressures came after observations of occurrence changes of wavelets form of fuel high pressure, probably caused by malfunction of injector's sprayer. The engine from test bed is very well armoured with sensors, what enable observations of fuel and combustion pressure in real time. Unfortunately, such equipment is very unlike in real objects, what created un idea to find out whether run of combustion pressure wavelet reflects fuel pressure deviations and whether is possible to detect such kind of deviations in way of decomposition of indicated pressure wavelet. Experiment was carried out in laboratory of Gdynia Maritime University, using medium speed diesel engine. Simulation of malfunctions of fuel valve was obtained by installation of specially prepared spraying nozzles. All measurements were carried out at reference load of 75% of MCR (Maximum Continuous Rating). In order to get reliable results and avoid errors due to omitting outer atmospheric conditions, registrations were repeated several times, in days characterized by different temperature and atmospheric pressure.

Słowa kluczowe

EN

technical diagnostics; marine engines; FFT; harmonic components; combustion pressure

• 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: 2018
• Tom: Vol. 25, No. 2
• Strony: 97--103
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Drewing S.

• Gdynia Maritime University, Mechanical Faculty Morska Street 83, 81-225 Gdynia, Poland tel.: [phone]

autor

Dereszewski M.

• Gdynia Maritime University, Mechanical Faculty Morska Street 83, 81-225 Gdynia, Poland tel.: [phone]

Bibliografia

• [1] Charchalis, A., Dereszewski, M., Processing of instantaneous angular speed signal for detection of a diesel engine failure, Hindawi Publishing, 2013.
• [2] Dereszewski, M., Wykorzystanie modelu dynamicznego silnika Sulzer 3Al25/30 do symulacji wpływu zmian obciążenia i uszkodzeń na fluktuację prędkości kątowej, Zeszyty Naukowe AM, Nr 81, Gdynia 2013.
• [3] Dereszewski, M., Charchalis, A., Polanowski, S., Analysis of diagnostic utility of instantaneous angular speed of a sea going vessel propulsion shaft, Journal of KONES, Vol. 18, No. 1, 2011.
• [4] Jankowski, A., Kowalski, M., Environmental Pollution Caused by a Direct Injection Engine, Journal of KONES, Vol. 22, No. 4, pp. 113-138, Warsaw 2015.
• [5] Kowalski, M., Jankowski, A., Research Performance of Novel Design of Diesel Engine Journal of KONES, Vol. 24, No. 4, pp. 99-108, Warsaw 2017
• [6] Jankowski, A., Reduction Emission Level of Harmful Components Exhaust Gases by Means of Control of Parameters Influencing on Spraying Process of Biofuel Components for Aircraft Engines, Journal of KONES, Vol. 18, No. 3, pp. 129-134, Warsaw 2011.
• [7] Pawletko, R., Ocena wrażliwości diagnostycznej przebiegu ciśnienia indykowanego średnioobrotowego silnika spalinowego, Diagnostyka, Vol. 31, 2004.
• [8] Piotrowski, I., Witkowski, K., Okrętowe silniki spalinowe, Trademar, Gdynia 2003.
• [9] Polanowski, S., Studium metod analizy wykresów indykatorowych w aspekcie diagnostyki silników okrętowych, Zeszyty Naukowe AMW, Nr 169 A, Gdynia 2007.
• [10] Wojnowski, W., Okrętowe siłownie spalinowe, Wydawnictwa Naukowo-Techniczne, Warszawa 1983.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).