TEAM QUIETS2014
SAE CSC DESIGN PRESENTATION
Snowmobile Modifications Appeal to Snowmobile Enthusiasts Dealer’s Perspective Engine Control Strategy Emissions Control Noise Reduction Conclusion
Presentation content
Snowmobile Modifications Plug and Play Harness
Turbo Charged Engine
Modified Exhaust System
Catalytic Converter
EGR System
Appeal to Snowmobile Enthusiasts Poll results from the FCMQ (Fédération des
clubs de motoneigistes du Québec)
Reduction of irritating noise frequencies (namely 600, 700, 850 Hz)
Appeal to Snowmobile EnthusiastsGood Fuel Economy 1.95 GPH at 45 MPH = 23 MPG (4900
rpm)600 Ace Etec 600 Ace Turbo
Displacement 600 cc 600 cc 600 cc
Stroke 4 Stroke 2 Stroke 4 Stroke
Hp 60 121 80
Fuel Consumption
26 mpg 21 mpg 23 mpg
Appeal to Snowmobile Enthusiasts +19 hp for a total of 79 hp and 60 ft-lbs of torque
Appeal to Snowmobile Enthusiasts (follow up)
Dealer’s Perspective Bolt On System
Bolt on turbo and headers
Quick connect harness
Engine Control Strategy Closed loop AFR control
Engine Control Strategy (Follow up)
Lean burning combustion
Calculating SFC (g/kW-hr)
Engine Control Strategy (Follow up)
0.98 1.00 1.02 1.04 1.06 1.08 1.10365.00
370.00
375.00
380.00
385.00
390.00
395.00
400.00
SFC (@ 4900 RPM)
SFC (4900 RPM)
Lambda
SFC
(g/k
W-h
)
Emission Control Managing HC, CO and NOx emissions
Emission Control (Follow up) Three way catalytic converter efficiency
Emission Control (Follow up) EGR system development
Emission Control (Follow up) EGR System Intergration
32503750
45004750
52505500
200220240260280300320340360380400
15
20
25
30
35
40
TPS
NOx quantity without EGR valve
15 20 25 30
35 40 TPS
RPM
Qty
NO
x (
ppm
)
NOx (ppm)
TPS (%)
Emission Control (Follow up)
32503750
45004750
52505500
200220240260280300320340360380400
15
20
25
30
35
40
TPS
NOx quantity with EGR valve activated
15 20 25 30 35
40 TPS
RPM
Qty
NO
x (
ppm
)
NOx (ppm)
TPS (%)
Emission Control (Follow up)
1 2 3 4 50
50
100
150
200
250
300
350
400
450
0
1
2
3
4
5
6
5 Mode Emissions Testing
HC
NOx
CO
Test Mode
HC
an
d N
Ox (
pp
m)
CO
(%
)
Final EPA Score 190
New exhaust system design
Noise Reduction
2013 2014
1
2
3
Noise Reduction (Follow up)
Targeted frequencys: 600Hz 750Hz 800Hz
Noise Reduction (Follow up)
Track Acoustic Improvements
Direct Injection
Drive by Wire Throttle
Clutch and Transmission Upgrade
Conclusion and Future Improvements
Thank You
Questions?