FPS - Friction Pad System Schaeffler Brasil Ltda

Format:

Conference/Event

Author/Creator:

Palhares, Palhares, author.

Contributor:

de Aguiar Vendrasco, Allyson

Kohtes, Pascal

Conference Name:

SAE Brasil 2010 Congress and Exhibit (2010-10-05 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

The synchronization system was created with the intention tomake easy the gear engaging in automotive transmissions. The speeddifference of the shafts is reduced during the gearshift operationby means of sliding friction of the synchronizer rings. Theconstant friction performance can be improved and the wear can besimultaneously reduced either by additives in the oil of thetransmission or by careful selection of the friction material forthe synchronizer rings.Nowadays, brass or steel meet the requirement of both frictionsurface and resistance on the driving lugs. The frictioncoefficient of the surface can be increased by scatter sinteredcoatings, molybdenum or carbon linings that are joined to thecarrier material using complex manufacturing processes.A new concept transforms this continuous friction lining intomany single friction elements that are guided by"pockets" in the synchronizer ring. These "frictionlining pads" require less material than the conventionalsolution (steel and friction compound) which leads to a reductionin the overall weight, especially in cases where non-metallicfriction material is used. This increases the efficiency by equalperformance and reduced drag torque, and also reduces the losses inthe gearbox which is a benefit for fuel-saving drive trains. Inaddition, the material of the carrier supports higher mechanicalstresses, because steel is used instead of brass. Also materialscharacterized by excellent friction properties when used asfriction linings can be chosen.In theory almost every material can be used as friction pads,such as the already proven scatter sintered coatings or anycombination of materials. Optimum friction elements for suchsystems include pads made with nonmetallic materials, as variousresins containing friction modifiers or pads from known brassalloys

Notes:

Vendor supplied data

Publisher Number:

2010-36-0455

Access Restriction:

Restricted for use by site license