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2005 Michigan Tech Clean Snowmobile

Explore the innovative integration of a high-performance, clean, and quiet four-cylinder engine from a Honda CBR954RR motorcycle into a snowmobile application. This project focuses on developing a versatile and eco-friendly snowmobile that caters to a broad audience. The study delves into the specifics of the engine, drive system, chassis, and emission controls, emphasizing reduced fuel consumption, emissions, and noise levels. The incorporation of advanced technologies and design modifications aims at enhancing fuel economy, reducing maintenance costs, and providing an exhilarating riding experience. Discover the environmental and operator benefits, such as increased fuel efficiency, durability, and affordability, along with insights from a dealer/outfitter perspective on the economic advantages and ease of maintenance.

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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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