Evaluation of operation in piston–con–rod system of ship propulsion engine on the basis of harmonic torque

• Autorzy: Rosłanowski J. , Charchalis A.
• Języki publikacji: EN

Abstrakty

EN

The following article includes the analysis of mechanical and thermal load criteria of combustion engine. Those criteria have been divided into tribological, technical in detail and technical in general. The above criteria have been related to piston-con-rod system, in which, two tribological centres were specified. One centre included, piston-piston rings and cylinder, in which, piston rings serve as labyrinth seal and the cylinder constitutes piston guides. Crank bearings and main bearings of engine crankshaft constitute the second centre. From the point of tribological view, piston-piston rings and cylinder constitute slide and thrust bearing lubricated hydrodynamically, while crankshaft bearings a-c-t as slide and journal bearings also lubricated hydrodynamically. In the description of thermal load of the above-mentioned tribological centres, special attention was paid to criteria that ensure their motion reliability and durability of engine operation. Whereas in the description of mechanical load of elements constituting investigated centres, some criteria were determined resulting from their functionality and fatigue strength of the material they were made of. Criteria of thermal loads were based on mean density flux of heat conducted through the walls of engine elements, paying attention to their low precision of evaluation. It has been emphasized that synthetic criteria indicators are the most precise. They are determined on the basis of engine load measurements during its operation. Those criteria allow us to describe the operating process of con-rod-piston diesel engines and at the same time it is possible to expose their technical condition which is of essential practical meaning. The wear process of tribological centres that takes place during operating in piston-con-rod system, affects the course of engine working process and its techno-economic indicators.

Słowa kluczowe

EN

criteria of mechanical and thermal load of the engine; tribological criteria of piston-crank combustion; engine system

• 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. 4
• Strony: 390--395
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Rosłanowski J.

• Gdynia Maritime University Department of Marine Maintenance Morska Street 83-87, 81-225 Gdynia tel.: [phone], fax: [phone]

autor

Charchalis A.

• Gdynia Maritime University Department of Marine Maintenance Morska Street 83-87, 81-225 Gdynia tel.: [phone], fax: [phone]

Bibliografia

• [1] Bielawski, P.; Drzewieniecki, J., Reduction of Marine Diesel Engine’s Vibration Signal to Condition of Reference Loaded, Materials II International Scientifically-Technical Conference Explo-Diesel & Gas Turbine 2001, pp. 33-42, Gdansk – Międzyzdroje – Kopenhaga 2001.
• [2] Chachulski, K., Application of Tensometric Torque for Evaluation of Combustion Quality in Combustion Engine; Ship Building, No. 12, 1977.
• [3] Iskra, A., Dynamic of Piston Mechanisms in Combustion Engines, Publishing House of the Poznań Institute of Technology, Poznan 1995.
• [4] Niewiarowski, K., Piston Combustion Engines, WKiŁ, Warszawa 1983.
• [5] Collective work: Torsional vibrations of ship propulsion systems, Materials of Ship Technique Centre in Gdańsk, Gdansk 1987.
• [6] Rosłanowski, J., An Attempt to Apply Autocorrelation Analysis into Supervision of Shipping Combustion Engine on the Basis of Changes in Rotatory Moment Caused by the Disturbances of Fuel Injection, Doctoral Thesis, Posen Polytechnic 1982.
• [7] Rosłanowski, J., Estimation of Head Generation in Engines Cylinders on the Bases of Autocorelation of Rotatory Moments Temporary Values, Materiały II International Scientifically-Technical Conference Explo-Diesel & GasTurbine 2001, pp. 273-278, Gdansk – Międzyzdroje – Kopenhaga 2001.
• [8] Węcławski, J., Ship Dynamics of Combustion Propulsions, Publishing House of the Gdansk Institute of Technology, Gdansk 1995.