Eric Buddrius Amanda Bolland Ian Lootens Greg Hilbert STEALTH CAT’S.

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Presentation transcript:

Eric Buddrius Amanda Bolland Ian Lootens Greg Hilbert STEALTH CAT’S

SPECIFICATIONS

CATALYST Aristo Contact is Bob McDowell Goal: to meet National Park Standards Focus: Carbon Monoxide and Unburned Hydrocarbons emissions Emissions Data 2010 Results CSC LimitNPS BAT CO209.94< 275< 120 HC41.6-< 15 NOX5.8-- HC+NOX47.36< 90- E-Score125.9> 100- Units: g/kW-hr

MUFFLER BASICS Two Main Functions Reflection Most Effective Destructive Interference High Back Pressure Restriction Most Common Cheapest Absorption Simple with Low Back Pressure Low Damping

HUSHPOWER TECHNOLOGY A.Entry Cone B. Laminar Flow Area C. Thermal Barrier D. Exit Cone

DESIGN EVALUATION Flow Bench Ricardo Wave J 192 Testing Procedure Timeline

FLOW BENCH Test Stand Settling Chamber Mass Flow Meter Vacuum Supply

FLOW BENCH Active Flow Bench Vacuum source Test Part Multiple uses Cylinders Porting Mufflers Air filters Measures Pressure differential with respect to mass flow

WHAT IS RICARDO WAVE?

MUFFLERS IN RICARDO WAVE

RICARDO WNOISE

RICARDO WNOISE OUTPUT

J 192 SOUND TEST

SOUND TESTING Existing Muffler Laminar Flow Muffler Hushpower Muffler Affect of Packing Small vs. Large Cone Perforation Series Parallel

TIMELINE November 29 th – Start J192 Sound Testing of Existing Mufflers December 10 th – Complete Flow Bench December 15 th – Flow Test Existing Mufflers December 17 th – Final Muffler Designed January 15 th – Receive Final CAT January 21st – Final Muffler Built January 22 nd – Begin Testing Final Muffler on Sled March 4 th – Leave for Competition

QUESTIONS?