Título

EFFECT OF LINER TEXTURE ON RING/LINER TRIBOLOGICAL PERFORMANCE

Autoria

Hugo M. Checo; Mohammed Jai; Gustavo C. Buscaglia

DOI

10.5151/1472-5836-25420

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Resumo

Friction-reducing textures for lubricated mechanisms have received much attention since the advent of microtexturing techniques. In this work we consider the piston ring/liner contact, numerically simulating the rings as they slide against a textured liner. This situation has not been sufficiently analyzed because its numerical complexity is much greater than that of texturing the rings. Further, we consider the actual typical geometries of oil-control, wiper and compression rings, under realistic loads and velocities. The results show the possibility of friction reduction when the texture on the liner is properly designed, identifying starvation alleviation as a crucial intervening mechanism.

 

Palavras-chave

Laser texture; Cylinder liner; Piston ring; Mass-conservative model; Friction; Fourstroke cycle