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Proposed Control Measure to Reduce Emissions from Small Off-Road Engines ( SORE )

Proposed Control Measure to Reduce Emissions from Small Off-Road Engines ( SORE ). Mobile Source Control Division July 2, 2003 Planning and Technical Support Division Public Workshop

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Proposed Control Measure to Reduce Emissions from Small Off-Road Engines ( SORE )

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  1. Proposed Control Measure to Reduce Emissions from Small Off-Road Engines (SORE) Mobile Source Control Division July 2, 2003 Planning and Technical Support Division Public Workshop Monitoring and Laboratory Division California Air Resources Board

  2. Topics to Cover Exhaust Evaporative Inventory California Air Resources Board

  3. Exhaust Emissions Mobile Source Control Division

  4. Overview of Presentation • Background • Amendment Objectives • Test Results • Other Modifications to the Regulations and Test Procedures California Air Resources Board

  5. Significant Events • 1990: 1st SORE Reg Adopted • 1995: 1st Standards Implemented • 1998: SORE Reg Amended • 1998/2000: U.S. EPA Finalizes Regs • 2003: New Amendments to be Proposed California Air Resources Board

  6. Statewide Small Engine Exhaust Inventory HC+NOx CY 2000 165 TPD = + CY 2020 97 TPD = California Air Resources Board

  7. Regulatory Amendment Objectives • Align with U.S. EPA’s 2005 “handheld” HC+NOx emission level • Adopt catalyst based HC+NOx standards for “nonhandheld” engines • Adopt optional low-emission standards • Better align ARB/U.S. EPA Test Procedures California Air Resources Board

  8. 0-65cc (“Handheld”) Engines - Proposed Amendments • Align with U.S. EPA’s 50 g/kW-hr HC+NOx standard • Applicable to engines less than 50cc • CO and PM standards unchanged • Revise upper limit of category to include engines up to 80cc • 2005 MY Implementation • Inline with EPA California Air Resources Board

  9. >80cc (“Nonhandheld”) Engines - Proposed Amendments • 50% reduction in HC+NOx standard • Catalyst based levels • >80 - <225cc: 8.0 g/kW-hr • 225cc and above: 6.0 g/kW-hr • Include 1000 hour durability option for engines 225cc and above • 2006 MY Implementation California Air Resources Board

  10. Catalyst Test Program • Contractor: SwRI • Purpose: Test small engine with catalysts to show a 50% emission reduction is feasible over the useful life of the engine California Air Resources Board

  11. Emission Control System • B&S #1 • Enleanment, Catalyst, PSAI • Tecumseh • Catalyst, PSAI • Honda #1 • Catalyst, PSAI • Kawasaki • Enleanment, Catalyst, PSAI California Air Resources Board

  12. Catalysts Used • TWC • Metallic substrate • Loading confidential California Air Resources Board

  13. Catalyst Efficiency Target Level California Air Resources Board

  14. Exhaust Levels Achieved Developed Engine Emissions Current Standard Current Standard Proposed Standard Proposed Standard California Air Resources Board

  15. Muffler Surface Temperatures (@Mode 1) California Air Resources Board

  16. Muffler Out Temperatures (@Mode 1) California Air Resources Board

  17. Summary of Tier 3 Standards California Air Resources Board

  18. Environmental Benefits 2010 Statewide HC+NOx Reductions from Exhaust Proposal (TPD) California Air Resources Board

  19. Estimated Cost to Meet Proposed Standards • < 80 cc: $0/unit • > 80 - < 225 cc: ~ $26 - $32/unit • > 225 cc: ~ $45 - $66/unit California Air Resources Board

  20. Optional Standards • Voluntary • Cleaner Engines • California “Blue Sky Series” • Comply with HC+NOx levels 50% of Tier 3 standard • Incentives • 2005/6 Implementation California Air Resources Board

  21. Additional Changes to Exhaust Regulations • Unit Power: Convert from hp to kW • Defects Reporting • Voluntary/Ordered Recall • Included in Exhaust and Evaporative Program • Align ARB/U.S. EPA Test Procedures California Air Resources Board

  22. California Air Resources Board

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