Comparison of an E10 Direct Injection Two-Stroke Cycle Engine and an E85 Four-Stroke Cycle Engine

Illustrated within this paper is Minnesota State University, Mankato Automotive Engineering Technology program's entry to the 2003 Clean Snowmobile Challenge held in Houghton, Michigan. Encompassed in this report are the criteria of performance, emissions, chassis, noise control, and results. Characterized in these criteria are the engine modifications and reasoning for the changes implemented.

The 2003 Clean Snowmobile Challenge (CSC) allowed the MSU students to concentrate on a thorough comparison of a two-stroke cycle engine vs. a four-stroke cycle engine in the areas listed. Extensive modifications and tests were performed on these two engines in order to provide significant data for performance, emissions and noise.