Investigation of friction loss in internal combustion engine of experimental microgeometry piston bearing surface

• Autorzy: Wróblewski E. , Finke S. , Babiak M.

Identyfikatory

DOI

10.5604/01.3001.0010.2951

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

combustion engine; friction; lubrication; piston; microgeometry bearing surface

• 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: 2017
• Tom: Vol. 24, No. 2
• Strony: 307--313
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Wróblewski E.

• Poznan University of Technology Institute of Combustion Engines and Transport Piotrowo Street 3, 60-965 Poznan, Poland tel.: [phone], fax: [phone]

autor

Finke S.

• Poznan University of Technology Institute of Combustion Engines and Transport Piotrowo Street 3, 60-965 Poznan, Poland tel.: [phone], fax: [phone]

autor

Babiak M.

• Poznan University of Technology Institute of Combustion Engines and Transport Piotrowo Street 3, 60-965 Poznan, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Baberg, A., Freidhager, M., Mergel, H., Schmidt, K., Aspekte der Kolbenmaterialwahl bei Dieselmotoren, MTZ, 12, 2012.
• [2] Blümm, M., Baberg, A., Dörnenburg, F., Leitzmann, D., Innovative Schaftbeschichtungen für Otto- und Dieselmotorkolben, MTZ, 02, 2016.
• [3] Deuss, T., Ehnis, H., Freier, R., Künzel, R, Friction power measurements of a fired diesel engine – influence of skirt geometry, MTZ 12, 2013.
• [4] Deuss, T., Ehnis, H., Rose, R. K., Künzel, R., Reibleistungsmessungen am Befeuerten Dieselmotor –Einfluss von Kolbenschaftbeschichtungen, MTZ 4, 2011.
• [5] Golloch R., Downsizing bei Verbrennungsmotoren – Ein wirkungsvolles Konzept zur Kraftstoffverbrauchssenkung, Springer-Verlag, Berlin, Heidelberg 2005.
• [6] Golloch, R., Untersuchungen zur Tribologie eines Dieselmotors im Bereich Kolbenring/Zylinderlaufbuchse, VDI Verlag GmbH, Reihe 12, Nr. 473, Düsseldorf 2001.
• [7] Knoll, G., Kolben-Zylinder Dynamik 1+2, FVV Vorhaben Nr. 528, Frankfurt am Main, 1996.
• [8] Iskra, A., Babiak, M., Wróblewski, E., The problems of piston skirt microgeometry in combustion engines, IOP Conf. Series: Materials Science and Engineering, Vol. 148, 2016.
• [9] Iskra, A., Krzymień, P., Wróblewski, E., Geometry of the improved layer over a piston skirt, Combustion Engines, Vol. 162 (3), pp. 192-196, PTNSS Bielsko-Biała 2015.
• [10] Iskra, A., Wróblewski, E., Babiak, M., Geometric shape of the support surface of the piston, Journal of KONES Powertrain and Transport, Vol. 22 No. 4, pp. 95-101, 2015.
• [11] Iskra, A., Babiak, M., Wróblewski, E., Wpływ schodkowego profilu powierzchni nośnej tłoka na straty tarcia silnika spalinowego, Technika Transportu Szynowego 12/2015, pp. 644-647, Instytut Naukowo-Wydawniczy TTS Sp. z o.o., Radom 2015.
• [12] Wróblewski, E., Iskra, A., Babiak, M., The impact of microgeometry bearing surface of the piston on the parameters of oil, Journal of KONES Powertrain and Transport, Vol. 23, No. 2, pp. 431-436, 2016.
• [13] Zima, S., Kurbeltriebe, Vieweg Verlag, Braunschweig-Wiesbaden 1999.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).