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VU Motorsports Intake/Exhaust Team Final Presentation. Kristina Kitko Mark Melasky Perry Peterson Tim Wranovix. Project Description. Design and build a new intake and/or exhaust system for the 2008 Formula SAE racecar
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VU MotorsportsIntake/Exhaust TeamFinal Presentation Kristina Kitko Mark Melasky Perry Peterson Tim Wranovix
Project Description • Design and build a new intake and/or exhaust system for the 2008 Formula SAE racecar • Prepare a design report to be used in the FSAE 2008 Competition in Detroit
Problems with Current Naturally Aspirated System • Inadequate data describing the intake and exhaust systems • FSAE team has suffered at competition due to lack of presentable data • FSAE team is unable to make improvements to current system due to lack of appropriate testing and modeling
Problems with Current Naturally Aspirated System (cont’d) • Intake was made from spare parts in one day • Exhaust system is very heavy • FSAE team is using the stock muffler from the Honda motorcycle (8.5 pounds) • Total system weighs around 25 pounds
Constraints • Described in FSAE rules: • 20mm Venturi restrictor on intake • 110 dB max exhaust volume • Packaging: • Fit within rear of car • Air filter, throttle, restrictor, fuel rail and muffler mounts • Cost: • Team must report market values of components used
Deliverables • Finished intake and/or exhaust system that is ready to be mounted on the 2008 FSAE car by April 1. • Detailed design report • Technical data with flow modeling • Images
Options • Naturally Aspirated • Build intake and/or exhaust • Turbocharged • Build intake and exhaust
Pros FSAE engine is setup for natural aspiration Cheaper than forced induction system Intake and/or exhaust can be redesigned No moving parts, so less likely to fail Not pressurized Cons Less power than complete forced induction Geometry needs to be thoroughly calculated Natural Aspiration
Pros Increased power Intake and exhaust are designed as one system Simpler geometry compared to a naturally aspirated system Widens engine’s power band Cons Expensive Heavy Turbo lag Current FSAE high compression pistons need to be replaced Too much power makes the car harder to drive Turbo
Turbos in Competition • Intake system data for 93/108 teams • 82 teams had natural aspiration • 11 teams had turbos • Overall placement • 6, 11, 14, 16, 45, 50, 53, 54, 57, 86, and 95
Schools with Turbos • Design is scored out of 150 points • 100 points is tied for 14th with 24 cars • 80 points is tied for 38th with 30 cars • 60 points is tied for 68th with 26 cars • 40 points is tied for 94th with 10 cars • Top cost score is 93.31
Engine Placement Front of Car
General Intake Requirements • Air filter mount and scoop • Throttle body redesign • Venturi optimization • Plenum volume optimization • Velocity stack design • Fuel injector positioning and mounts
3Y 4-to-1 Dual Muffler Potential Exhaust SetupFiring Order 1-2-4-3
Next Step • Proceeding with a Naturally Aspirated System • Begin modeling an intake system • Begin modeling an exhaust system