University of Idaho's Clean Snowmobile Design: Using a Direct-Injection Two-Stroke with Exhaust Aftertreatment

摘要

The University of Idahos entry into the 2004 SAE Clean Snowmobile Challenge was a proof-of-concept gasoline direct-injection (DI) two-stroke powered snowmobile. The direct injection system was designed to decrease exhaust emissions and improve fuel economy without reducing the power output of the engine. An oxidation catalyst was used to further reduce the emissions. Engine noise was reduced by using two exhaust silencers and sound absorbing materials. Chassis noise was reduced using a spray on material that absorbs vibrations transferred through the chassis. The final design was a lightweight, fuel efficient, clean, quiet, and fun-to-ride snowmobile.