Marine four-stroke Diesel engine crankshaft main bearing oil film lubrication characteristic analysis

• Autorzy: Teng X. , Zhang J.

Identyfikatory

DOI

10.2478/pomr-2018-0070

• Języki publikacji: EN

Abstrakty

EN

The Craig-Bampton modal synthesis method was used to establish the dynamic model of marine four-stroke diesel engine body and crankshaft. Based on the Greenwood / Tripp microlong contact theory considering the surface roughness and the generalized Reynolds equation considering the oil filling rate, the elastohydrodynamic lubrication model of the main bearing of the four - stroke diesel engine is found. At the rated speed, the lubrication performance of the main bearing is simulated and analyzed by the maximum dynamic pressure, the minimum oil film thickness and the friction power. The results show that the oil pressure of 4 # main bearing is the largest and the maximum oil film pressure is in the 4 # main bearing position. The friction load of 4 # main bearing is the largest. The average oil film thickness of 4 # main bearing is the smallest and the minimum oil film The thickness also occurred in the 4 # main bearing position; it can be seen 4 # bearing the most bad lubrication conditions.

Słowa kluczowe

EN

marine four – stroke diesel engine; main bearing; elastic hydrodynamic lubrication

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2018
• Tom: S 2
• Strony: 30--34
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Teng X.

• School of Marine Engineering, Dalian Maritime University, Dalian, Liaoning, China

autor

Zhang J.

• School of Marine Engineering, Dalian Maritime University, Dalian, Liaoning, China

Bibliografia

• 1. Sun, Jun, X. Cai, and L. Liu. On the elastohydrodynamic lubrication performance of crankshaft bearing based on the effect of whole engine block deformation. Industrial Lubrication and Tribology 64.1(2012):60–65.
• 2. Cai, X. X., et al. Elastohydrodynamic lubrication analysis of main bearing for internal combustion engine considering block deformation. Tribology 30.2(2010):118–122.
• 3. Lei, Jilin, et al. Analysis on influence factors of main bearing lubrication characteristics for horizontal diesel engine. Transactions of the Chinese Society of Agricultural Engineering volume 28.17(2012):19–24(6).
• 4. Wei, Lidui. Thermo-elasto-hydrodynamic Mixed Lubrication of Main Bearings of Marine Diesel Engines, Based on Coupling between Flexible Engine Block and Crankshaft. Journal of Mechanical Engineering 50.13(2014):97.
• 5. Wei, L., S. Duan, and H. Wei. TEHD lubrication analysis of the main bearings of a marine diesel engine based on the flexible engine block. Journal of Harbin Engineering University (2015).
• 6. Saša Bukovnik;Günter Offner, et al. Thermo elasto hydrodynamic lubrication model for journal bearing including shear rate-dependent viscosity. Lubrication Science 19.4(2007):231–245.
• 7. Greenwood J. A., Tripp J. H. The contact of nominally flat rough surface [J]. Proceedings of the Institution of Mechanical Engineers, 1970, 185(46):625–633.
• 8. Greenwood J. A., Tripp J. H. The contact of nominally flat rough surface [J]. Proceedings of the Institution of Mechanical Engineers, 1970, 185(46):625–633.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).