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Kettering University

The Kettering University Clean Snowmobile Challenge showcases the evolution of snowmobile technology, focusing on reduced emissions and noise while maintaining performance. Presented by Kyle Schwulst and Andrew Stahr, the featured snowmobile, a modified Yamaha V-Max 600, incorporates a Daihatsu 659cc engine, enhancing efficiency and meeting stringent emissions standards. Key modifications include a sporty hood, advanced CVT, and an adjustable suspension. The project emphasizes cost-effective solutions and ease of manufacturability, addressing the need for eco-friendly snowmobiling.

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Kettering University

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  1. Kettering University Clean Snowmobile Challenge March 23rd – April 1st, 2001 Presented by: Kyle Schwulst and Andrew Stahr

  2. Base Snowmobile • Yamaha V-Max 600 • 600cc carbureted 2-stroke engine • Standard continually variable transmission (CVT) • Limited adjustability rear suspension Picture Courtesy of Yamaha Corp.

  3. Snowmobile Modifications • Daihatsu 659cc engine • Stock engine cooling • No chassis modifications • Modified Oil Pan for lower installation height • CVT and bearing adaptor to engine flywheel

  4. Wiring harness Sporty hood appearance Exhaust system design E-85 compatibility Snowmobile Modifications

  5. Suspension and Final Drive • Team Fast M-10, long travel, highly adjustable suspension • Camoplast 1.0” rear track • Lightweight components

  6. > 80% noise reduction (-10 dBA) > 99% THC reduction > 96% CO reduction Performance and cost comparable to 600cc class snowmobile Preliminary Results + =

  7. Questions?

  8. Kettering CSC Objectives • Reduce noise • Reduce emissions • Maintain overall performance • Cost effective • Ease of manufacturability • Reliable

  9. Desired Drivetrain Characteristics • Fuel Injection • Electronic engine control • Automatic altitude adjustment • Minimal use of custom parts • Comparable power to 600cc two-stroke

  10. Why not other motors? • Direct injection two-stroke • Complex control mechanism • Undesirable emissions characteristics (max. 75% reduction) • Rotary engine • Lack of availability • Undesirable emissions characteristics

  11. Why not other motors? • Marine four-stroke • Physical engine layout incompatibility • Undesirable emissions characteristics • Motorcycle four-stroke • High mechanical noise emissions • Potential for undesirable emissions characteristics

  12. Daihatsu Mira 659cc 4-stroke • OEM 659cc displacement • Meets stringent Japanese 2006 vehicle emissions standards • OEM fuel injected • OEM turbocharged/ intercooled • OEM electronic engine control • OEM integrated catalyst

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