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Emission Standards for SI Marine Engines

2. Outline. Overview of new standardsSpark-ignition marine engine categoriesProgram detailsNot-to-exceed zoneSmall businessesEvaporative emissionsQuestions. 3. Final Rule. On September 4, 2008, EPA Administrator Steve Johnson signed, into law, new exhaust and evaporative emission standards fo

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Emission Standards for SI Marine Engines

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    2. 2 Outline Overview of new standards Spark-ignition marine engine categories Program details Not-to-exceed zone Small businesses Evaporative emissions Questions

    3. 3 Final Rule On September 4, 2008, EPA Administrator Steve Johnson signed, into law, new exhaust and evaporative emission standards for spark-ignition marine engines and vessels. These standards apply only to new engines and vessels sold for use in the United States. The standards will help reduce harmful health effects of ozone and carbon monoxide from these products.

    4. 4 Final Standards: Overview HC+NOx exhaust emission standards for SI marine engines are similar in stringency to existing standards in California New CO exhaust emission standards for all SI marine engines New Not-to-Exceed provisions New evaporative emission standards

    5. 5 Engine Categories SI Marine Outboards/PWC Sterndrive/Inboards Jetboats High performance Air boats Marine generators Small SI as well

    6. 6 Program Details

    7. 7 Same HC+NOx standards as CARB 2008 Can be achieved with existing technology 2-stroke direct injection engines 4-stroke engines Will essentially phase-out carbureted 2-stroke engines Outboards/PWC

    8. 8 OB/PWC Standards

    9. 9 SD/I Standards Similar stringency as CARB 2008 standards CO standard based on observed performance Catalytic control for most engines Credit program for jet boats using PWC engines Engine-based standards for high-performance engines

    10. 10 SD/I Standards

    11. 11 SD/I Provisions Many similar provisions as for OB/PWC Averaging, banking, and trading Closed crankcase Emissions related warranty Similar test procedures Some differences Onboard diagnostics No production line testing No manufacturer run in-use test program

    12. 12 GM Engine Blocks Vast majority of SD/I marine engines built from GM engine blocks Planned product line changes Replace 4.3L with 4.1L Replace 8.1L with supercharged 6.0L Providing an additional year of lead time for SD/I engines built from these blocks

    13. 13 High Performance Engines Short useful life and warranty periods No NTE standards Most manufacturers eligible for small business provisions Assigned emission factors 15% torque at idle during test Simplified testing

    14. 14 Marine Generator Sets Remain classified as small SI engines Stringent CO standard based on new catalyst-equipped marine generators

    15. 15 Off-Cycle Engine Operation

    16. 16 Not-To-Exceed Standards

    17. 17 Not-To-Exceed Standards

    18. 18 Not-To-Exceed Standards

    19. 19 Small Business Provisions Broad engine families for high performance Additional lead time for SD/I Early ABT bonus credits for SD/I No production line testing Assigned deterioration factors Economic hardship relief

    20. 20 Evaporative Emissions Portable tanks Tank permeation Self-sealing vent Vessels Hose and tank permeation Diurnal emissions Refueling spillage Engines Standards apply to hose & tanks directly mounted on engines

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