University of Wisconsin-Platteville

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University of Wisconsin-Platteville

• 2006 SAE Clean Snowmobile Challenge
• Houghton, Michigan
• March 13 - 18

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Outline

• Team
• Chassis
• Engine
• Cooling System
• Driveline Improvements

• Noise Reduction
• Emissions Reduction
• Cost Analysis
• Conclusion

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The Team

• Located in the southwest corner of Wisconsin
• Mechanical Engineering is the largest major on
  campus

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Chassis
Before

• 2002 Polaris Pro-X 440 Fan
• High Performance Platform
• Light-Weight, durable chassis
• 672 lb. Wet

After
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The Engine

• Rotax Semi-Direct Injected 600cc 2-Stroke
• Electric Start
• Electronic Reverse
• V Force Reeds
• 2-4 HP in Mid-Range Power

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Cooling System

• Front Track Heat Exchanger
• Belly Pan Radiator w/Fan
• Coolant Temps Reduced 30-40F

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Driveline Improvements

• Hiperfax slides
• Teflon Inserts
• 700F Melting Temp
• 96 Track Studs
• Improved Control
• Braking
• Acceleration

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Noise Reduction

• Damping and absorption
• of under hood and tunnel noise
• Dynamat Xtreme
• Vibration Damping
• Dynamat Hoodliner
• Sound Absorption

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Noise Reduction Cont.

• Exhaust system
• Redesigned Automotive Muffler
• Perforated Tubing w/Glass Packing
• 4-6 dBa Reduction

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Noise Reduction Cont.

• Drive Train
• Removal of Select Idler Wheels
• Addition of a Vespel Chain Tensioner

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Noise Reduction Cont.
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Emissions Reduction

• 2 Stage 3-Way Catalyst
• 200 Cells per sq/in
• Ceramic Substrate
• Can withstand
• accelerations of 75g
• for the life of the vehicle
• Custom diffuser provides
• uniform distribution of O2

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Emissions Reduction Cont.

• Secondary air injection
• Driven from magneto side
• Air delivery varies with engine RPM.
• Compact packaging

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Stock 600 SDI 88.4 KW
Plattevilles Clean Sled 82.5 KW
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Plattevilles 2-Stroke (6th Place) 82.5 KW
Second Place Finisher (4-stroke) 58.5 KW
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Cost Analysis
Subsystem Subtotal
   
Induction System -
Fuel System 157.00
Engine 383.30
Exhaust After Treatment 171.51
Electronics 135.00
Noise Treatment 72.50
Technology Implementation Total Cost 919.31
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Conclusion

• Environmentally friendly snowmobile
• Cost effective design
• Maintains performance attributes of a 2-stroke
  snowmobile

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Sponsors

• Polaris Industries
• Millennium Technologies
• Outlaw Composites
• Digatron
• TekVest
• Dynamat
• Castle
• HMK

• Hiperfax
• Camoplast
• NGK
• Sportech
• Association of Wisconsin Snowmobile Clubs

• Digatron
• New Trails Inc.
• VConverter
• Stud Boy
• Clicks Cycling Service
• Sign Worx

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Comments and Questions?