Iowa State University Clean Snowmobile Club Iowa State University 2016 Clean Snowmobile Challenge.

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Presentation transcript:

Iowa State University Clean Snowmobile Club Iowa State University 2016 Clean Snowmobile Challenge

Iowa State University Clean Snowmobile Club Agenda Chassis Selection Chassis Improvements Exhaust Treatment Engine Calibration Questions

Iowa State University Clean Snowmobile Club Chassis Selection 2014 Polaris Indy 800SP 795cc Cleanfire Liberty 2-stroke Aluminum ProRide Chassis

Iowa State University Clean Snowmobile Club Chassis Selection Buyer brand preference

Iowa State University Clean Snowmobile Club Chassis Selection Buyer engine displacement preference

Iowa State University Clean Snowmobile Club Chassis Selection Importance of fuel economy to buyers when purchasing snowmobile

Iowa State University Clean Snowmobile Club Chassis Improvements Sound Deadening Material: RAAMmat BXT II Placed in engine bay Significantly reduced noise levels from engine

Iowa State University Clean Snowmobile Club Chassis Improvements Buyer riding conditions preference

Iowa State University Clean Snowmobile Club Chassis Improvements Track Selection: Ripsaw ” lugs /8” Woody’s Traction Studs

Iowa State University Clean Snowmobile Club Exhaust Treatment Emission Analysis of 2-stroke oils: Five oils analyzed Test run by intervals of 500rpm between 3000rpm and 5000rpm Oil system flushed between samples

Iowa State University Clean Snowmobile Club

Exhaust Treatment Amsoil Interceptor proved to be best candidate Oil Name Definite Integral (Cumulative % over 110 seconds) Percent Increase Compared to Lowest Interceptor N/A Polaris VES % Dominator % Klotz % G-Oil % Oil Definite Integral (HC parts per million cumulative over 110 seconds) Percent Increase Compared to Lowest Interceptor601,577N/A Polaris VES662, % Dominator780, % Klotz629, % G-Oil644, % Hydrocarbons Carbon Monoxide

Iowa State University Clean Snowmobile Club Exhaust Treatment Catalytic Converter: 400cpsi Heraeus catalyst Targets constituents of carbon monoxide and excess hydrocarbons Composition Platinum, Palladium, Rhodium (1:20:1)

Iowa State University Clean Snowmobile Club Exhaust Treatment Sound Treatment: Twin high-flow mufflers Stainless steel wool packing for heat resistance Manufactured primarily for space restrictions and catalyst installation

Iowa State University Clean Snowmobile Club Engine Calibration Engine Management: Power Commander V (PCV) Fuel Mapping Ignition timing GM Flex Fuel Sensor Ethanol compensation 0-5V signal to PCV

Iowa State University Clean Snowmobile Club Engine Calibration Adjustment to catalyst: First catalyst struggled with short-circuited fuel Adjusted system to move catalyst further downstream Progressive tune implemented Throttle Position (% Open) Target Lambda Value

Iowa State University Clean Snowmobile Club Questions?