Date post: | 18-Dec-2015 |
Category: |
Documents |
Upload: | christian-strickland |
View: | 214 times |
Download: | 1 times |
University of Minnesota – DuluthDesign Presentation
University of Minnesota – DuluthDesign Presentation
2006 Clean Snowmobile Challenge2006 Clean Snowmobile Challenge
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.
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
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
Build GoalsBuild Goals
Dependability
Minimal additional build costs
Improve current snowmobile durability
Dependability
Minimal additional build costs
Improve current snowmobile durability
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
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
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
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
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
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
Catalytic ConverterCatalytic Converter
Small physical footprintSecondary air inlet into oxidation
catalyst2 honeycomb elements
Small physical footprintSecondary air inlet into oxidation
catalyst2 honeycomb elements
NoiseNoise
Exhaust noise dampeningRubber chassis noise dampenerSound absorption foam
Exhaust noise dampeningRubber chassis noise dampenerSound absorption foam
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
Questions?Questions?