- Tytuł:
- Investigation of friction loss in internal combustion engine of experimental microgeometry piston bearing surface
- Autorzy:
-
Wróblewski, E.
Finke, S.
Babiak, M. - Powiązania:
- https://bibliotekanauki.pl/articles/244305.pdf
- Data publikacji:
- 2017
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
combustion engine
friction
lubrication
piston
microgeometry bearing surface - Opis:
- The piston is the most mechanically and thermally loaded engine component. The energy required to overcome the mechanical losses in the combustion engine is approx. 10% of the energy supplied to the engine in a fuel. The main node piston-pin-piston rings are most responsible for the formation of mechanical losses. It is advisable to reduce friction losses in the piston-cylinder group lead to an increase in the overall efficiency of the engine and thus reduce the fuel consumption. The way of achieving these objectives is modification of microgeometry of the pistonbearing surface, which cooperates with the cylinder wall. The geometry of the gap between the piston skirt and the cylinder liner greatly affects the friction loss inside combustion engine. A way to reduce the area covered by the oil film is the application of a stepped profile of the piston skirt. The stepwise profile can be obtained covering the cylindrical or tapered piston-bearing surface with a thin layer graphite. Covering the piston bearing surface with a thin layer of graphite one can get an extremely advantageous tribological properties of the piston assembly which means the expected parameters of oil film and reduction friction loss. In this article, the results of research on experimental pistons on friction loss in combustion engine are presented.
- Źródło:
-
Journal of KONES; 2017, 24, 2; 307-313
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł