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SwRI Exhaust Tests - 1

SwRI Exhaust Tests - 1. Data proves the obvious - that large 3-way catalysts, supplied with enough secondary air (engine enleanment or SAI) can reduce emissions. From an equipment perspective, issues that need to be considered include: catalyst size and packaging in a “dirty” environment

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SwRI Exhaust Tests - 1

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  1. SwRI Exhaust Tests - 1 • Data proves the obvious - that large 3-way catalysts, supplied with enough secondary air (engine enleanment or SAI) can reduce emissions. • From an equipment perspective, issues that need to be considered include: • catalyst size and packaging in a “dirty” environment • heat generation (burns, grass fires, melted plastic, vapor explosions) • noise reduction, given muffler’s new role as cat-container • incorporation of catalyst with evap controls The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

  2. SwRI Exhaust Tests - 2 • Thermal Issues • Temperature measurement is affected by thermocouple location, contact, convective effects, etc. Detailed studies need to be done to confirm/verify expected peak temperatures, locations, sensitivity to operating and locational parameters such as orientation for numerous products by each OEM • Detailed thermal balance needs to be conducted The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

  3. Adverse Impact of Increased Temperatures on Equipment Components/Applications (OPEI’s September 10, 2002 Comments) The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

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