TEAM 5:Calvin Supermileage

Members: Daniel Houseward, Elijah Jentzen, Scott Mehlberg, Shane Muller, Joseph Flikweert

OutlineProjectGoalsDesign NormsAnalysis PerformedMain ObstaclesMajor DecisionsFuture Work

ProjectSociety of Automotive Engineers (SAE)Competition:

The Supermileage® competition provides engineering and technology students with a challenging design project that involves the development and construction of a single-person, fuel-efficient vehicle. Vehicles are powered by a small four-cycle engine. The vehicles will run a specified course with the vehicle obtaining the highest combined kilometers per liter (miles per gallon) rating plus design segment points winning the event.

GoalsVehicle will:

Achieve 500 mpgComply with all rules set forth by SAE competition

Project will:Raise awareness about fuel efficiencyRoll over project

Design NormsStewardship

Use resources efficiently and responsiblyCaring

Caring for future generationsTrust

Vehicle must be reliable, dependable and safe Comply with competition rules

Analysis Performed

EngineShellChassis DesignDrive Train

Engine AnalysisHot vapor

Preheat fuel from exhaust stream~7% increase in efficiency

Increase compression ratioLarger compression ratios are more efficient:

Milling the cylinder head ~5% increase in efficiency

Engine AnalysisOverhead camshaft configurationMore efficient combustionEngine “breathes” better

http://auto.howstuffworks.com/harley4.htm

Shell AnalysisGoverning Drag Equation:

15 mph minimum average velocity (V) requirement set forth in competition rules

Minimize frontal area (A)

Chassis AnalysisDesign:

Three wheel configuration Power to trailing wheel

Aluminum construction EES analysis

Roll bar 250lbf requirement

Integrate with shell to minimize frontal area

Drive TrainCentrifugal clutch

Engage within optimal rpm rangeGearing

3 gear rear hub Jack Shaft

Intermediate gear

Power Train

Major ObstaclesBudgetEngine Delivery

6-8 weeks as of 11/30/2010No Experience with competitionTime management

Need to stick to Gantt chart and critical path.

Future WorkFEA analysis of chassis and components

January 2011Build Dynamometer

January 2011Order Components

In progressFinalize DesignBuild and test

Spring SemesterCompete

June 2011

ConclusionAnalysis shows that this project is feasibleConcern:

BudgetTimeResourcesScope

Questions?