New Polymeric Coated Engine Bearings for Marginal Lubrication Conditions MAHLE Tech Center Brazil

Format:

Conference/Event

Author/Creator:

Uehara, Uehara, author.

Contributor:

Costa, Sandra Matos Cordeiro

da Silva Praça, Mário Sérgio

dos Santos Ferreira, Matheus

Conference Name:

SAE Brasil 2011 Congress and Exhibit (2011-10-04 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

The market has recently required the bearings to operate underintermittent or occasionally boundary lubrication conditionsthrough requirements guided basically by CO₂ reduction: flex-fueledengines, stop-start operation, specification of low viscosity oils,extension of high speed regimes with low stiffness conrods andcrankshafts.The sensitivity of the oil film rupture, higher loads and therobustness of operation required the development of low frictioncoatings or overlays with improved wear resistance.MAHLE response to these requirements has been addressed througha newly developed product assigned as polymer-coated bearing. Thepolymeric overlay has a proprietary low friction solid blend and itis sprayed onto premium bimetallic bearings.In this paper it is shown that these bearings run at lowertemperature, with lower friction and can support higher loads thanthe conventional bimetallic bearing. When submitted to a stop-start(boundary lubrication) condition presented much less wear thanpremium bimetallic bearings

Notes:

Vendor supplied data

Publisher Number:

2011-36-0189

Access Restriction:

Restricted for use by site license