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Kettering UniversityKettering University Clean Snowmobile Challenge
March 23rd – April 1st, 2001
Presented by:
Kyle Schwulst and Andrew Stahr
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Base SnowmobileBase Snowmobile
Yamaha V-Max 600 – 600cc carbureted 2-
stroke engine– Standard continually
variable transmission (CVT)
– Limited adjustability rear suspension
Picture Courtesy of Yamaha Corp.
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Snowmobile ModificationsSnowmobile Modifications
Daihatsu 659cc engine Stock engine cooling No chassis modifications Modified Oil Pan for lower
installation height CVT and bearing adaptor to
engine flywheel
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Wiring harness Sporty hood appearance Exhaust system design E-85 compatibility
Snowmobile ModificationsSnowmobile Modifications
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Team Fast M-10, long travel, highly adjustable suspension
Camoplast 1.0” rear track Lightweight components
Suspension and Final DriveSuspension and Final Drive
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Preliminary ResultsPreliminary Results > 80% noise
reduction (-10 dBA)
> 99% THC reduction
> 96% CO reduction
Performance and cost comparable to 600cc class snowmobile
+ =
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Questions?Questions?
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Kettering CSC ObjectivesKettering CSC Objectives
Reduce noiseReduce emissions Maintain overall performanceCost effective Ease of manufacturabilityReliable
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Desired Drivetrain Desired Drivetrain CharacteristicsCharacteristics
Fuel Injection– Electronic engine control– Automatic altitude adjustment
Minimal use of custom partsComparable power to 600cc two-stroke
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Why not other motors?Why not other motors?
Direct injection two-stroke– Complex control mechanism– Undesirable emissions characteristics (max.
75% reduction)
Rotary engine– Lack of availability – Undesirable emissions characteristics
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Marine four-stroke– Physical engine layout incompatibility – Undesirable emissions characteristics
Motorcycle four-stroke– High mechanical noise emissions– Potential for undesirable emissions
characteristics
Why not other motors?Why not other motors?
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Daihatsu Mira 659cc 4-strokeDaihatsu Mira 659cc 4-stroke
OEM 659cc displacement Meets stringent Japanese
2006 vehicle emissions standards
OEM fuel injected OEM turbocharged/
intercooled OEM electronic engine
control OEM integrated catalyst