The impact of the energy state of the surface of friction pairs on the friction and wear in internal combustion engines

• Autorzy: Borkowska J. , Kaźmierczak A. , Krakowian K. , Cienciała M. , Skorupa P. , Łoza Ł.

Identyfikatory

DOI

10.5604/12314005.1168426

• Języki publikacji: EN

Abstrakty

EN

The elements creating a friction pairs are described to be very difficult in terms of defining all optimal parameters in an unequivocal way. The research on stability of friction pairs is focused on the surface and the top layer of surface in the parts concerned. The main goal is to find new design solutions and materials, thereby achieving one million kilometers of mileage to main repair in the case of internal combustion engines. The biggest structural difficulties are noticeable in friction pairs where it can be observed sliding and returning motion, which is also connected with sealing function. A typical example of such pair is piston ring – cylinder sleeve in piston – rings - cylinder unit in an internal combustion engine. Engineers are currently seeking an additional factor, which would enable gaining the reduction of tangential force by reducing the friction coefficient in elements of friction pair during operations. The surface free energy may be such factor - it results from molecular structure and nature of the bonds between the molecules present in the material. Components of surface free energy determine the tribological properties of the material, which is reflected in the stability of the units. Energy state of the surface, which is connected with chemistry and characteristics in the material, is the first step to consider about the impact on wearing in internal combustion engine. This is the main topic of this article.

Słowa kluczowe

EN

friction pairs; top layer of surface; sealing function; piston ring; cylinder sleeve; combustion engine; tangential force; friction coefficient; molecular structure; bond; tribology

• 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: 2015
• Tom: Vol. 22, No. 4
• Strony: 37--41
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Borkowska J.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Kaźmierczak A.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Krakowian K.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Cienciała M.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Skorupa P.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Łoza Ł.

• Technical University of Wroclaw, Department of Mechanical Engineering Wyspiańskiego Street 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Kaźmierczak, A., The impact of the energy state of the surface layer of the internal combustion engine components on wear and friction of friction pairs, Publishing House of Wroclaw University of Technology, Wroclaw 2013 (in Polish).
• [2] Kaźmierczak, A., Influence of application of the cermet coating on tribological processes in the seal ring of internal combustion engines, Publishing House of Wroclaw University of Technology, Wroclaw 2002 (in Polish).
• [3] Kaźmierczak, A., Friction and wear layout of piston − rings − cylinder system, Publishing House of Wroclaw University of Technology, Wroclaw, 2005 (in Polish).