members: daniel houseward, elijah jentzen, scott mehlberg, shane muller, joseph flikweert
TRANSCRIPT
TEAM 5:Calvin Supermileage
Members: Daniel Houseward, Elijah Jentzen, Scott Mehlberg, Shane Muller, Joseph Flikweert
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
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
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