Schaeffler Technologies Ag & Co .kg

Allison Transmission, Inc.

Rashid Farahati

Murat Bakan

Jung-Feng Hu

Michael Yanetta

Patrick Lindemann

Jeffrey Krause

Christine Malott

Prasanna Gurumurthy

Brian C Zaugg

Jeremy Vanni

Daniel Linton

John Carrier

John Volcansek

Joseph Bonvissuto

Olusanmi Adeniran

Wilbert Greathouse

Richard Bednar

Jerry Munk

Bruce E Fox

Zhiru Shi

David C Avins

Adam Uhler

David M Smith

Michael G Swank

Larry Chad Boigegrain

Nathan Yensho

Layton Michael Broome

Chad Mieczkowski

Babak LotfizadehDehkordi

Michael Clason

Mitchell Valaitis

Mahdi Amiriyan

Sharan Rudra

Kayla Covington

Maxim Schikowez

Thomas Freshly

Aliihasan Karamavruc

Paul Dougall

A method of making a wet friction material includes coating a first outer surface of a cellulose layer with a friction coating; placing a matrix of fibers and filler particles on a second outer surface of the cellulose layer; and saturating the matrix of fibers and filler particles with a binder and curing the binder to join the matrix of fibers and filler particles together to form a wet friction material base layer and to join wet friction material base layer to the second outer surface of the cellulose layer.

Method for forming a double layer wet friction material with cellulose layer

A method for forming a friction material includes mixing a fibrous base material and filler particles to form a substrate; saturating the substrate with a silane solution including a silane to form a uniformly impregnated silane matrix; curing the uniformly impregnated silane matrix to form a cured uniformly impregnated silane matrix; saturating the cured uniformly impregnated silane matrix with a non-silane binder solution to form a uniformly impregnated silane, non-silane matrix; and curing the uniformly impregnated silane, phenolic resin matrix to form the friction material.

Flexible wet friction materials including silanes

A clutch assembly for a motor vehicle drivetrain includes a rigid support and a wet friction material fixed to a surface of the rigid support. The wet friction material includes a base material including a matrix of fibers and filler particles embedded in the matrix of fibers. The filler particles include calcined kaolin clay, and the base material includes, by percent weight, 5 to 60% of calcined kaolin clay. The wet friction material also includes a binder embedded in the base material. The binder is tung modified phenolic resin.

Clutch assembly including wet friction material with calcined kaolin clay and tung modified phenolic resin

A method of making a wet friction material layer includes adding a media in liquid form to a material base including filler particles embedded in a matrix of fibers; drying the media to solidify the media on the filler particles such that the media plugs holes in the filler particles; adding a binder to the material base; and unplugging at least some of the holes in the filler particles by removing at least some of the media from the material base.

Wet friction material with coated filler particles

A method for forming a friction material. The method includes mixing a fibrous base material and filler particles to form a substrate. The method further includes saturating the substrate with a silane solution including a silane to form a uniformly impregnated silane matrix. The method also includes curing the uniformly impregnated silane matrix to form a cured uniformly impregnated silane matrix. The method also includes saturating the cured uniformly impregnated silane matrix with a phenolic resin solution to form a uniformly impregnated silane, phenolic resin matrix. The method also includes curing the uniformly impregnated silane, phenolic resin matrix to form the friction material.

A method of providing electrical insulation for at least one portion of a bearing element is disclosed herein. The method includes electrostatically spraying a polymer coating to the at least one portion of the bearing element, and the polymer coating comprises a thermoset epoxy coating or a self-adhering nylon powder coating. The bearing element can be grounded during the electrostatic spraying. The method includes heating the polymer coating in an oven at a temperature less than or equal to 220&#xb0; C. for a predetermined time, such that after removal from the oven, the polymer coating has a porosity of less than 10%. The coated bearing element has a resistance of at least 50 M&#x3a9; resistance under dry conditions and 10 M&#x3a9; resistance under wet conditions.

Bearing element having polymeric coating and method of application of polymeric coating to bearing element for electrical insulation

A wet friction material includes a base including a matrix of fibers and filler particles embedded in the matrix of fibers; a binder embedded in an interior of the base; and a quaternary ammonium salt containing coating on an outer surface of the base. The quaternary ammonium salt containing coating can include a quaternary ammonium salt and a solution binder.

Wet friction material with quaternary ammonium salts

A method for manufacturing a thrust washer is provided in which a phenolic resin layer is bonded directly to a bearing surface of the base material using two presses at an elevated temperature and pressure.

Thrust bushing surface layer using directly bonded heat activated nitrile-phenolic adhesive film

A method of making a wet friction material includes joining filler particles and fibers together and forming a base; coating an outer surface of the base with a quaternary ammonium salt containing solution; and drying the quaternary ammonium salt containing solution to form a quaternary ammonium salt containing coating on the outer surface of the base.

A method of etching a surface of a metal clutch part for bonding of friction includes etching, by a laser, a plurality of craters into a specified etching area of the surface of the metal clutch part. The specified etching area is defined by an outer circumference and an inner circumference. The craters define an etch pattern on the surface. The laser follows a predefined path during the etching to generate the etch pattern. The path is one of a plurality of radially aligned and circumferentially overlapping figure eights, each of the figure eights extending from the outer circumference of the specified etching area to the inner circumference of the specified etching area; a plurality of rows of circumferentially aligned and radially overlapping figure eights extending from the outer circumference of the specified etching area to the inner circumference of the specified etching area; or a plurality of circumferentially spaced radially extending lines extending from the outer circumference of the specified etching area to the inner circumference of the specified etching area. The method also includes bonding the friction material to the metal clutch part on the etch pattern.

Laser etching of patterns on a surface for friction material adhesion

A friction plate for a clutch includes a face and a first friction material disposed on the face. The first friction material has a first composition including a first filler material at a first weight concentration of a total weight of the first friction material. A second friction material is disposed on the face and has a second composition that is different than the first composition and including a second filler material at a second weight concentration of a total weight of the second friction material. The second weight concentration is higher than the first weight concentration.

Wet clutch friction plate

A method of producing a friction material. The method includes mixing silica containing filler particles and a liquid binder to form a binder-filler liquid mixture. The method also includes saturating a fibrous base material with the binder-filler liquid mixture to form a saturated fibrous base material. The method further includes curing the saturated fibrous base material at a predetermined temperature for a predetermined time to cure the saturated fibrous base material to form the friction material.

Wet friction material production methods

A method of making a wet friction material includes providing an outer layer on a base layer to form the wet friction material. The base layer includes a first proportion of fiber material and a first proportion of filler material. The outer layer includes a second proportion of fiber material and a second proportion of filler material. The second fiber proportion is less than the first fiber proportion and the second filler proportion is greater than the first filler proportion. The method further includes forming a modified outer layer by burning off the fiber material of the outer layer.

Method of forming wet friction material by burning off fibers

A torque converter, including: a cover arranged to receive torque; an impeller including an impeller shell fixedly connected to the cover and including a first surface; a first plurality of blades fixedly connected to the impeller shell; a turbine including a turbine shell with a second surface; a second plurality of blades fixedly connected to the turbine shell; friction material bonded, with an adhesive, to one of the first surface or the second surface; and a stator connected to the turbine and the impeller and including a third plurality of blades. The one of the first surface or the second surface includes a periodic pattern etched into the one of the first surface or the second surface.

Torque converter with an etched clutch surface

A layer is provided for a thrust bushing, for example a torque converter thrust bushing. A phenolic resin is bonded directly to a bearing surface of a rotating component to form the layer without any substrate.

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Copley, OH, United States of America

Rashid Farahati