Pyroclastic Flows- Subaerial - University of Minnesota Duluth
University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.
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Transcript of University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.
![Page 1: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/1.jpg)
University of Minnesota – DuluthDesign Presentation
University of Minnesota – DuluthDesign Presentation
2006 Clean Snowmobile Challenge2006 Clean Snowmobile Challenge
![Page 2: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/2.jpg)
Design Strategy:
To reengineer a snowmobile to maintain or improve performance while decreasing emissions and noise.
Design Strategy:
To reengineer a snowmobile to maintain or improve performance while decreasing emissions and noise.
![Page 3: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/3.jpg)
Catalytic converter to reduce emissionsSecondary air supply for further
emissions controlChassis noise dampenerUtilization of stock components to keep
build costs to a minimum
Catalytic converter to reduce emissionsSecondary air supply for further
emissions controlChassis noise dampenerUtilization of stock components to keep
build costs to a minimum
![Page 4: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/4.jpg)
SnowmobileSnowmobile
2006 Polaris FST 750 cc 4-stroke Turbocharged with intercooler 135 hp
2006 Polaris FST 750 cc 4-stroke Turbocharged with intercooler 135 hp
![Page 5: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/5.jpg)
Build GoalsBuild Goals
Dependability
Minimal additional build costs
Improve current snowmobile durability
Dependability
Minimal additional build costs
Improve current snowmobile durability
![Page 6: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/6.jpg)
CoolingCooling
Relocated intercooler Additional cooling fan
Additional air intakeChassis noise dampener and
lengthened snowflap
Relocated intercooler Additional cooling fan
Additional air intakeChassis noise dampener and
lengthened snowflap
![Page 7: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/7.jpg)
EmissionsEmissions
3-way catalyst Reduce emissions
2CO + O2 → 2CO2
2NO → O2 + N2
or 2NO2 → N2 + 2O2
HC + O2 → CO2 + H2O
Secondary air injection Add extra oxygen for reactions
3-way catalyst Reduce emissions
2CO + O2 → 2CO2
2NO → O2 + N2
or 2NO2 → N2 + 2O2
HC + O2 → CO2 + H2O
Secondary air injection Add extra oxygen for reactions
![Page 8: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/8.jpg)
Emissions DataEmissions Data
HC in PPM at 5300rpm
5
0.80
36.75
0
5
10
15
20
25
30
35
40
Parts Per Million (ppm)
Cat
Cat /w Air
Stock
HC in PPM at 5300rpm
5
0.80
36.75
0
5
10
15
20
25
30
35
40
Parts Per Million (ppm)
Cat
Cat /w Air
Stock
![Page 9: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/9.jpg)
Emissions DataEmissions Data
Co % at 5300rpm
0.16
0.02
1.635
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
Percentage (%)
Cat
Cat /w Air
Stock
![Page 10: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/10.jpg)
Emissions DataEmissions Data
NOx in PPM at 5300rpm
40.4
33.00
3
0
5
10
15
20
25
30
35
40
45
Parts Per Million (ppm)
Cat
Cat /w Air
Stock
![Page 11: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/11.jpg)
ExhaustExhaust
Addition of catalytic converter
Lengthened/expanded exhaust system
Exhaust temperature control
Utilization of stock resonator
Addition of catalytic converter
Lengthened/expanded exhaust system
Exhaust temperature control
Utilization of stock resonator
![Page 12: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/12.jpg)
Catalytic ConverterCatalytic Converter
Small physical footprintSecondary air inlet into oxidation
catalyst2 honeycomb elements
Small physical footprintSecondary air inlet into oxidation
catalyst2 honeycomb elements
![Page 13: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/13.jpg)
NoiseNoise
Exhaust noise dampeningRubber chassis noise dampenerSound absorption foam
Exhaust noise dampeningRubber chassis noise dampenerSound absorption foam
![Page 14: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/14.jpg)
Design ImprovementsDesign Improvements
Heated air supply for catalytic converterVariable air injectionModulating chassis noise dampenerHeated slide rail design to prevent snow
buildupAntilock Braking/Traction Control
system
Heated air supply for catalytic converterVariable air injectionModulating chassis noise dampenerHeated slide rail design to prevent snow
buildupAntilock Braking/Traction Control
system
![Page 15: University of Minnesota – Duluth Design Presentation 2006 Clean Snowmobile Challenge.](https://reader034.fdocuments.net/reader034/viewer/2022042821/56649d165503460f949ec4d6/html5/thumbnails/15.jpg)
Questions?Questions?