Patent ID: 6942389
Filing Date: 2005-09-13
Classification: C21D,F16C,Y10T

Abstract:
1. An engine bearing for an internal combustion engine, comprising: an arcuate metal backing plate; a lining of bearing metal different than that of the backing plate applied to said backing plate and presenting an inner arcuate surface; and said inner arcuate surface of said lining being peened to induce compressive residual stresses in said inner arcuate surface to define a locally hardened surface layer of said lining backed by a core of said lining, wherein said hardened surface layer has a hardness and fatigue strength exceeding that of said core, and said core is relatively more conformable than that of said hardened surface layer and wherein said hardened surface layer extends about 20 to 50 micrometers below said inner arcuate surface.