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Stealth CAT’s

Stealth CAT’s. Eric Buddrius Amanda Bolland Ian Lootens Greg Hilbert. Specifications. Catalyst. Aristo Contact is Bob McDowell Goal: to meet National Park Standards Focus: Carbon Monoxide and Unburned Hydrocarbons emissions. Muffler Basics. Two Main Functions Reflection

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Stealth CAT’s

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  1. Stealth CAT’s Eric Buddrius Amanda Bolland Ian Lootens Greg Hilbert

  2. Specifications

  3. Catalyst • Aristo Contact is Bob McDowell • Goal: to meet National Park Standards • Focus: Carbon Monoxide and Unburned Hydrocarbons emissions

  4. 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

  5. Hushpower technology Entry Cone B. Laminar Flow Area C. Thermal Barrier D. Exit Cone

  6. Design Evaluation • Flow Bench • Ricardo Wave • J 192 Testing Procedure • Timeline

  7. Flow Bench Test Stand Settling Chamber Mass Flow Meter Vacuum Supply

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

  9. What is Ricardo Wave?

  10. Mufflers in Ricardo Wave

  11. Ricardo WNoise

  12. Ricardo Wnoise output

  13. J 192 Sound Test

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

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

  16. Questions?

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