PowerPoint Presentation

Fundamental of Automotive Clutch TP-APTMandeep Chawla, Transmission Design, MBRDI 5/18/2015

Mercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date1transition_MB_presentation-slides_EN.potAgenda Purpose

Clutch Linkages

Construction

Design

Torque Capacity &Clamp Load

Friction Materials

Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date2transition_MB_presentation-slides_EN.potPurpose of Clutch Clutch provides the interruptible connection between two rotating shaft(sufficient Torque capacity)

Allows engine to be disengaged from transmission for shifting gears and coming to a stop

Allows smooth engagement of engine to transmission.

Torsional vibration tuning capability.

Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date3transition_MB_presentation-slides_EN.pot Clutch Linkages

Linkage Cable Hydraulic LEVER PRINCIPLE PASCALS LAW Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date4transition_MB_presentation-slides_EN.pot

FRICTION CLUTCHES

SPRING TYPE DIAPHRAGM TYPE Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date5transition_MB_presentation-slides_EN.potConstruction of Clutch

Clutch Cover

Pressure Plate

Diaphragm spring

Fulcrum Rings

Fulcrum Rivets

Rivets to attach drive strap to clutch cover and pressure plate

Drive straps

Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date6transition_MB_presentation-slides_EN.potClutch Plate

Friction Disk :Often made of asbestos .Grooves present to prevent adherence with flywheel & pressure plate .Riveted to cushion plate

Cushion springsWaved metal between clutch half'sDampen clutch engagement

Damper Assembly Consists of Hub Flange & Torsion Damper .Reduces torsional vibrations that result from uneven engine & drivetrain power impulses.

HubInternal splines of hub fit over external splines of transmission input shaft .

Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date7transition_MB_presentation-slides_EN.potDesign of Clutch

Belleville/diaphragm type:cost effectiveuniform engagementlimited spring pressureSpring:unlimited pressure capabilitiesas springs wear, pressure may become inconsistent

Load/deflection of a coil-spring pressure plate compared to diaphragm pressure plate Clamp Load Release Load & Lift-off Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date8transition_MB_presentation-slides_EN.pot Clutch Torque capacity & Clamp Load Clutch Torque Capacity : The maximum constant torque level that a clutch is capable of transmitting without slipping Torque Capacity = Clutch Assembly Clutch Assembly Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date9transition_MB_presentation-slides_EN.potClutch Plate Materials

Coefficient of friction of clutch friction material varies from 0.30 to 0.40.Materials used are kevlar, organic, hybrid carbon/ceramic/organic , sintered iron etc .

Slide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date10transition_MB_presentation-slides_EN.potAny questionsSlide #Title of presentation, CorpoS, (9Pt.), Date, NameMercedes-Benz Research and Development IndiaDivision Title of presentation, CorpoS, Bold (10pt), Date11