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2005 Michigan Tech Clean Snowmobile

Incorporation of a High Performance, Four-Cylinder, Four-Stroke Motorcycle Engine into a Snowmobile Application. 2005 Michigan Tech Clean Snowmobile. Greg Davis David Meyer Advisor: Dr. Bernhard Bettig. Concept. Build a high performance, clean, and quiet

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2005 Michigan Tech Clean Snowmobile

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  1. Incorporation of a High Performance, Four-Cylinder, Four-Stroke Motorcycle Engine into a Snowmobile Application 2005 Michigan TechClean Snowmobile Greg Davis David Meyer Advisor: Dr. Bernhard Bettig

  2. Concept Build a high performance, clean, and quiet snowmobile that appeals to a wide audience and can be adapted to multiple applications

  3. High Performance • Engine – 2003 Honda CBR954RR • Drive system – Semi-direct drive with crankshaft mounted output system • Chassis – 2004 Polaris Pro-X

  4. Engine • Honda CBR954RR • 4-Stroke • 4-Cylinder • 4 valves per cylinder • Electronic Fuel Injection • Naturally Aspirated

  5. Snowmobile Adaptation • Crankshaft adapter and output shaft • Engine side cover to support output shaft

  6. Drive System • Micro Belmont primary clutch • Team Industries rapid reaction roller secondary clutch • FAST gearbox • Shaft support arm

  7. Chassis • Over the motor steering system • Rider position and ergonomics • Suspension and rider comfort

  8. Clean • 3-way Metal substrate catalytic exhaust treatment • Honda PAIR valve • Fuel injection optimization • Catalyst optimization • Reduced fuel consumption

  9. Emissions

  10. Quiet • Custom muffler • Quiet track • Under hood sound absorption foam • Integrated motor mount bushings

  11. Muffler Design • Frequency analysis completed • Peak frequencies identified • Combination reactive and absorptive muffler • Muffler tuned to eliminate peak frequencies

  12. Further Noise Reduction • Various tracks tested on simulation stand • Sound absorption foam used to reduce under hood noise • Motor mount bushings integrated to reduce vibration

  13. Clean Greater than 95% reduction in HC and CO2 Greater than 78% reduction in NOx Increased Fuel Economy, 14.5 MPG Reduction in burned oil Quiet 35dB reduction in exhaust noise Suspension and track noise reduction Environmental Perspective

  14. Operator Perspective • Fun to Ride Due to High Specific Power and Fuel Economy • 32.14 W/N • Increased Fuel Economy, 14.5 MPG • Low Maintenance • Seasonal Oil Change, Reduced Spark Plug Fouling • High Durability • Drive System, Four-Stroke Reliability • Affordability • Average of $110 Savings per Season in Petroleum Products • Fuel cost savings due to higher fuel economy

  15. Dealer/Outfitter Perspective • Affordable • $1314 additional technology per CSC TICA Form • Reduced Maintenance • Seasonal Oil Change, Reduced Spark Plug Fouling • Less Cost of Maintaining • Easy tunability • Simple clutch tuning transforms a touring sled into a high performance machine in minutes for minimal cost • Increased Durability • Drive System, Four-Stroke Reliability

  16. Questions

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