University of Idaho’s low-speed flex fuel direct-injected 797cc two-stroke rear drive snowmobile.

Details

• Creators:
  Miller, Neil ; Welch, Austin ; Den Braven, Karen
• Corporate Creators:
  University of Idaho ; National Institute for Advanced Transportation Technology (NIATT) (U.S.)
• Corporate Contributors:
  United States. Department of Transportation. Research and Innovative Technology Administration ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Snowmobiles
  • Renewable energy sources
  • Alcohol fuels
  • Ethanol
  • Electronic fuel injection
  • Exhaust gases
  • Emissions testing
  • Snowmobiles--Fuel systems
  • Renewable energy sources
  • Ethanol as fuel
  More +
• Resource Type:
  Tech Report
• Geographical Coverage:
  Idaho
• Edition:
  Final report.
• Corporate Publisher:
  National Institute for Advanced Transportation Technology (NIATT) (U.S.)
• Abstract:
  The University of Idaho’s entry into the 2012 SAE Clean Snowmobile Challenge uses a Ski-Doo XP chassis with a low-speed 797 cc direct-injection two-stroke powered snowmobile modified for flex fuel use on blended ethanol fuel. A battery-less direct injection system was used to improve fuel economy and decrease emissions while maintaining a high power to weight ratio. A new tuned exhaust design was used to lower the engine speed while maintaining a peak power output of 79 kW (106 hp). Noise was reduced by running the engine at a lower speed, and by strategically placed sound absorbing materials within the engine compartment. A muffler was designed that reduced exhaust noise and improved engine emissions without greatly reducing power output. A rear drive system was designed to improve drive train efficiency, and the snowmobile entered the 2012 SAE CSC competition weighing 281 kg (620 lbs) wet, achieving 9.35 km/L (22 mpg) running on blended ethanol fuel, with an EPA five-mode emissions test score of 196 on E10, and a predicted J-192 sound magnitude score of 78 dBA.
• Format:
  PDF
• Funding:
  DTRT07-G-0056
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25387/dot_25387_DS1.pdf
• File Type:
  [PDF - 900.07 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:34970736be5020ab92428bf307532d472d9bfa21ac7e5dce20adf8782667d5db47be0f1b23241603b7528e44618880e26b87790874577bf7df36c0c5e8f13c7e