Compression Ignition Marine Emissions

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Compression IgnitionMarine Emissions

• Where are we now?
• Whats likely to be in the next Marine Rule?

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Current EPA Marine Exhaust Emissions Timing
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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

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EPAs 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

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EPAs 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

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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

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EMA Proposals
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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.

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Catalytic Converter
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Catalyzed Continuously Regenerating Technology
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Selective Catalytic Reduction Technology
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CRT Diagnostic Module
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SCR System for M/V SOLANO
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Weight Impact to SOLANO
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Emission Level Comparison
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Other Issues

• Availability of Ultra-Low Sulfur Fuel in the
  marine market isnt mandated until 2013 or later
  in Alaska
• Power Density PCI and EGR dont work in high
  power density engines
• Auxiliary Engines?
• DPF use of Vanadium substrate may be an
  environmental problem

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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 [phone]
• e-mail bunker.byron_at_epa.gov 
• Diesel Boats and Ships
• http//www.epa.gov/otaq/marine.htm