Tribological behavior of the piston rings with different profiles of the contact surface during exploitation

Abstract

In the work paper are presented the results obtained from experimental, model and exploitation researches, effectuated over piston rings with different profiles of the exterior surface, situated in permanent contact with the cylinder liner. Comparative experiments have shown the utilization effectiveness of doublebarreled piston rings regarding oil consumption and cylinders’ wear.

În lucrare se prezintă cercetări experimentale de model şi exploatare a segmenţilor de piston cu diferite profiluri ale suprafeţei de contact cu cilindrul motorului. Cercetările comparative au arătat eficienţa de funcţionare a segmenţilor, cu profil format din două suprafeţe concave unite cu una convexă, din punct de vedere al consumului de ulei, uzurii suprafeţei cilindrului.