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Vibration Control Products

Vibration Control Products. September 2005. Metaldyne VCP Business. Global Sales: USD227 million Global Market Share: 26% North American Market Share: 40% Principle Products: Rubber CS Dampers Viscous CS Dampers

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Vibration Control Products

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  1. Vibration Control Products September 2005

  2. Metaldyne VCP Business • Global Sales: USD227 million • Global Market Share: 26% • North American Market Share: 40% • Principle Products: Rubber CS Dampers Viscous CS Dampers (CS: Crank Shaft) • Annual Damper Quantity: 13 million - total production

  3. VCP Facilities Thamesville Canada RD/MFG Lyon France IP/RD/VD Technical Center IP/RD Mfg NA Group Operations & Technical Center Barcelona Spain RD/VD Mfg Litchfield MI IP/RD/VD Mfg Metaldyne Sabin India RD/Machine Comp Mfg Halifax UK VD Technical Center/VD & RD Mfg Ramos Arizpe, Mexico RD Mfg Dieburg Technical Center

  4. Rubber and Viscous Damper Capabilities

  5. What is NVH? • Noise, Vibration and Harshness • Anything which reciprocates or rotates can produce vibration • Vibration can be either random or periodic • Resultant vibratory forces will excite structural components • Structural vibration creates radiated noise • Harshness is how we perceive noise

  6. Solutions to NVH Problems • Isolation – Separating the vibration from the user by use of a soft coupling or insulation • Alteration – Changing the character of the vibration through rearrangement of the masses and springs • Expulsion – Moving the vibration outside of the operating range • Reduction–Addition of a secondary mass and spring tuned to • reduce objectionable vibration or noise

  7. Engine Technology:Vibration Control Products Propeller Shaft Damper Power train Bending Damper Bendampolator (C/S Damper Isolator and Bending Damper) Rubber C/S Damper Structural Frame Damper 2 Bushing Part At SI Viscous C/S Damper Rear Pinion Damper Solves Pinion Pitch Vibration Half Shaft Damper Transmission Gear Rattle Dampers 4X2 Mounted Externally 4X4 Place Inside the Transfer Case Dampolator Combination Isolation Pulley and C/S Damper Viscous & Rubber Cam Damper

  8. Sheet steel hub with brazed flange Single Mass / Dual Mode Engine Technology:Vibration Control Products Mold-bonded and Pressed Dual Mass Damper Laser welding of cast iron casing and stainless steel cover Viscous Damper

  9. Traditionally used on heavy duty and industrial applications Perceived as expensive and were not previously considered for automotive use Generally perform better than a rubber damper but at an increased weight penalty Can be used inside an automotive engine, resulting in substantial space savings Biggest benefit is the broad frequency range Engine Technology:Vibration Control Products Viscous Design • First Isolation Pulley introduced on the Olds V6/V8 Diesels in 1982 to address accessory belt durability issues • Renewed interest in Europe due to problems associated with dual mass flywheels fitted to small diesels • Cylinder deactivation has potential to result in NVH issues with accessory drives do to increased crank amplitudes • Tight packaging requirements resulted in Metaldyne being the lead developer of a compact formed steel Isolation/Damper combination in Europe Isolation Design

  10. Bendampolator Rubber Viscous Damper (RVD) Dampolator Engine Technology: Damper Designs Combination Designs

  11. The Metaldyne Technical Advantage Single Mass / Dual Mode Dampers • Metaldyne’s patented design* allows, through proper configuration and selection of rubber components, dampening of both Torsional and Bending vibrations with a single inertial mass. • Benefits • Reduced Weight • Reduced Cost • Improved NVH Characteristics • Reduced Parasitic Power Loss * US Patent Number: 5,231,893

  12. Crankshaft Bending Dampers Patented Single Mass Dual Mode Technology Competitor’s heavier dual mass dual mode damper with an extra damper needed for tuning. Elimination of weight and cost by utilizing Metaldyne technology (Pat. # 5,231,893) for tuning a single mass damper in both torsion and bending. Crank Nose Vertical Bending Vibration 70 65 tr2444pr1h_s Crank Nose X 2204_6_s Crank X 2204_3_s Crank X 60 Testing results showed improvement with a single-mass dual-mode damper over the standard pulley, single-mass single-mode and dual-mass dual-mode dampers. stock_s Crank X 55 50 45 40 Amplitude g 35 30 25 20 15 10 5 0 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 rpm

  13. Engine Technology: NVH Optimization Structural Design of the damper and its components is having a greater influence on overall Engine NVH of today’s high power density light weight engines. Structural analysis to optimize parameters like face surface area and hub structural stiffness in conjunction with elastomer material selection can effect overall engine NVH. Windows in the spokes reduced area of damper pushing air and thus reduced noise radiated by part

  14. VCP Development Testing Capabilities • Global Technical Centers • Team Torsional Engine Simulator • Engine Dynamometer Lab • Component Life Cycle Testing • CMM/Metrology Area • Machine & Fabrication Lab • Tear Down & Evaluation Area • NVH Semi-anechoic Chassis Dyno • NVH Testing and Development Lab • Part Validation Testing • Material Testing

  15. Thank You

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