Configurations and Materials of Oil Control Rings to Meet the New Internal Combustion Engines Requirements Cofap

Format:

Conference/Event

Author/Creator:

Demarchi, Valmir, author.

Conference Name:

SAE Brasil (1992-05-01 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1992

Summary:

The fuel economy and gaseous emissions features have led the engine developments for the last few years. Various actions taken to meet these objectives imposed the necessity of components, in this case oil control rings, with higher mechanical resistance, durability and efficiency during the engine life.A new nodular cast iron alloyed with Niobium was developed. The presence of Niobium carbides raises significantly the wear resistance of this material.New configurations of oil control rings with taper faces or barrel faces showed a better performance if compared with two-piece conventional rings. The contact surface height variation during the engine life (and also the mean specific contact pressure variation in the ring land and cylinder wall contact) brings benefits in the oil consumption reduction without compromising the durability of rings and cylinders

Notes:

Vendor supplied data

Publisher Number:

921451

Access Restriction:

Restricted for use by site license