University Of Maine Clean Snowmobile

1
University Of Maine Clean Snowmobile
The Rock!
2
Introduction

• Maine New England Snowmobiling!
• The Economic Impact
• 3000 full time equivalent jobs
• Jobs are in Northern Maine Badly needed jobs
• Who is riding?

http//www.northernoutdoors.com/Snow.html
An Economic Evaluation of Snowmobiling in Maine
Stephen Reiling, Department of Resource Economics
and Policy University of Maine
3
Target Market

• The average age of a snowmobile owner? 41
  years old with 0.8 kids at home!
• Other activities X-Country Skiing, Ice fishing,
  Work Related
• If they own a motorcycle?

Goldwing ABS
CBR 1000RR
International Snowmobile Manufacturers
Association
4
How to Hit the Target?

• Do the owners want to smell like gasoline at the
  end of the day?
• Do they want to converse on the sled?
• Priorities
• Easy starting
• Fuel economy long riding range
• A modern bike or car on snow!

5
Secondary Market

• Current Non-snowmobilers
• Utility users US Forest Service
• How do we appeal to that market?
• Maintain or improve performance
• Lower emissions
• Reduced noise
• Enjoy nature

6
Design Objectives and Approach

• Reduce noise and inefficiencies from a stock
  Arctic Cat 660cc touring sled
• Touring sleds are most used by target markets
• 4-Stroke engines inherently cleaner

7
Design Objectives and Approach

• OBJECTIVE
• Reduce Noise
• Maintain Performance
• Reduce Emissions

• APPROACH
• Custom Cowling
• System Modeling for Clutching
• Catalytic Converter and Piggyback on ECU

8
Cowling Design

• Custom manufacturing based on geometry
• Limited air vents and acoustical foam reduce noise

9
System Modeling

• Predict Sleds Performance
• Use Engine Data
• Tell where data comes from

10
(No Transcript)
11
Dynomometer

• Fully digital diagnostics
• User friendly interface using LabView
• Compare with theoretical predictions

12
Clutching Model

• Isolate inefficiencies
• Predict performance trade offs
• Dynamic
• Steady State

13
Clutching Model
14
Reduce Emissions

• Previously installed catalytic converter
• Microcontroller piggyback for ECU
• Monitors air fuel ratio
• Wide band O2 sensor
• indirectly control pulse width of fuel injector

Catalytic Converter
Piggyback Unit
15
Piggyback Schematic
16
Piggyback Circuit
Programming Serial Port
BS24P Microcontroller Basic Stamp
Analog to Digital Converter
Digital Potentiometer
DC-DC Converter 12V to 5 V
17
Emissions
18
Improved Emissions
19
Improved Emissions
20
Emission Summary

• Low Cost
• Catalytic Converter 65.00
• Wide band O2 Sensor 80.00
• Other parts 220.00
• Total 365.00

• Results
• With converter and ECU piggyback total reduction
  in emissions from
• 90-95
• Compared to stock 660

21
Conclusion

• Low cost to Manufacturer and Consumer
• Low emissions for environmentally conscious
• Reliable and all modifications fail safe.
• Meet the needs of primary and secondary target
  markets