status report on sd/i saltwater test program nmma/epa meeting january 24, 2006
TRANSCRIPT
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Status Report on SD/I Saltwater Test Program
NMMA/EPA Meeting
January 24, 2006
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• Status of program– Short of targeted hours of operation– Issues with exhaust manifolds on two of the
three boats– Additional funding needed
• Planned next steps– Resolution of issues– Continued testing
Overview
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Maxum
Malibu
Sea Ray
No emission data taken on in-use engines
21 ft sterndrive4.3 L V637 hours accumulatedNo apparent problems
19 ft inboard straight-drive5.7 L V8100 hours accumulatedWater leaks at thermocouples upstream of catalyst
22 ft sterndrive5.7 L V8OBD-M system55 hours accumulatedCatalyst positioned too close to water mixing point
Status Summary
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Maxum
Catalyst location close to engine (away from water mixing point)
No visible deterioration of catalysts
PPM testing shows good test results
Next Steps: Continue to operate in existing configuration
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Next Steps: Replace parts of manifold that have developed risks of leaks Keep same manifold design
(except no through-jacket thermocouples upstream of catalysts) Put boat back in service with new catalysts
Malibu Water leaks at thermocouple fittings upstream of catalysts
Damage through the catalyst
inlet
exit
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Sea Ray
Next Steps: Redesign manifold to move catalysts closer to engine/add baffles Put boat back in service with new catalysts/manifolds
Catalysts very close to water mixing point
Oxygen sensor still operational
Salt deposits on catalyst exit
inlet
exit
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Planned Next Steps• Rebuild manifolds for Malibu and Sea Ray
– Modify catalyst location on Sea Ray– Re-baseline emissions– Begin operation from zero hours
• Continue operation with Texas Parks & Wildlife– Boating season coming up soon– Evaluate hour accumulation at end of season
• Other modifications– Better maintenance of engines (flushing)– Modify thermostat housings
• Work out funding for additional operation