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Compression Ignition Marine Emissions

Compression Ignition Marine Emissions. Where are we now? What’s likely to be in the next Marine Rule?. Current EPA Marine Exhaust Emissions Timing. Acronyms. SCR – Selective Catalytic Reduction DOC – Diesel Oxidation Catalyst DPF – Diesel Particulate Filter EGR – Exhaust Gas Recirculation

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Compression Ignition Marine Emissions

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  1. Compression IgnitionMarine Emissions Where are we now? What’s likely to be in the next Marine Rule?

  2. Current EPA Marine Exhaust Emissions Timing

  3. Acronyms • SCR – Selective Catalytic Reduction • DOC – Diesel Oxidation Catalyst • DPF – Diesel Particulate Filter • EGR – Exhaust Gas Recirculation • PCI – Pre-combustion Injection • VGT – Variable Geometry Turbo

  4. EPA’s Schedule • Fast track process • Develop framework by the end of April ’06 • Draft text by June ‘06 • Internal government review with OMB, SBREFA, DOJ, USCG, etc in August ’06 • NPRM “signed” by the end of the year and published in early 2007 • Starting as soon as 2010, if possible • NMMA / EMA is suggesting 2012

  5. EPA’s “Wants” • NMMA / EMA concurrence to Fast Track the Rule • 50% or more reduction in PM inventory from Marine • Some applications / engines must achieve more than 50% to get an overall inventory reduction of 50%. • Soot traps and SCR aftertreatment for Category 2 engines and possibly the largest Category 1 engines • Modest NOx reductions • Include Tier 3 and Tier 4 regulation • Include all vessels – commercial & recreational • Combined Marine & Locomotive Rule

  6. NMMA / EMA / EPA Consensus • Recreational will have less stringent limits that do not require aftertreatment • Large vessels, tugs and vessels with available space will use after treatment • Harmonization with Europe is important • Category 3 engines & IMO MARPOL will be considered in a separate rulemaking

  7. EMA Proposals

  8. Strategy • Use aftertreatment on large engines & applications that have the space to accommodate it • Large in relationship to engines are open for discussion • One idea is 1,200-1,400 hp would be large • Urea based SCR and regenerative DPF • Use DOC on commercial applications • Possible exception for high power density “recreation like” commercial engines • Early PM reductions for Recreational & Small Commercial applications.

  9. Catalytic Converter

  10. Catalyzed Continuously Regenerating Technology

  11. Selective Catalytic Reduction Technology

  12. CRT Diagnostic Module

  13. Catalyst in Reactor HousingCatalyst Cell Arrangement3 Rows of 9 Bricks stacked Fore to Aft Mixing Ducts Urea Injection Lance Exhaust Flow Mixing Vanes 3 Feet Square Urea Dosing Unit SCR System for M/V SOLANO

  14. Weight Impact to SOLANO

  15. Emission Level Comparison

  16. Other Issues • Availability of Ultra-Low Sulfur Fuel in the marine market isn’t mandated until 2013 or later in Alaska • Power Density – PCI and EGR don’t work in high power density engines • Auxiliary Engines? • DPF – use of Vanadium substrate may be an environmental problem

  17. EPA Contact • Byron Bunker – Marine Project Leader • USEPA National Vehicle and Fuel Emissions Laboratory/OAR 2565 Plymouth Road Mail Code: AAHDOC Ann Arbor, MI 48105 • Office Phone: (734) 214-4155 • e-mail: bunker.byron@epa.gov  • Diesel Boats and Ships • http://www.epa.gov/otaq/marine.htm

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