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Refueling Spillage Control For Small Off-Road Engines

This resource provides information on the components of refueling emissions, spillage emissions inventory, and performance specifications for spill-proof refueling systems. It also includes preliminary test data and emissions reductions estimates for various engine categories.

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Refueling Spillage Control For Small Off-Road Engines

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  1. Refueling Spillage Control For Small Off-Road Engines Air Resources Board August 6, 1998 Dean Bloudoff

  2. Refueling Spillage Control Workshop • The Components of Refueling Emissions • Performance Specifications for ‘Spill-Proof’ refueling system. • Preliminary Test Data. • Spillage Emissions Inventory.

  3. Components of Refueling Emissions • Equipment Refueling Spillage. • Vapor Displacement During Refueling Event. • Container Spillage During Transport and Storage. • Container Diurnal and Breathing or Resting Losses. • Missing: Container Vapor Displacement

  4. Equipment Categories • Lawn and Garden - 4,487,694 • Pleasure Craft (Recreational Marine) - 858,480 • Recreational Equipment (Off-Road) - 471,238 • Light Commercial Equipment - 296,117 • Industrial Equipment - 6,972

  5. Emissions Reductions • Conservative Estimate Approximately 15 TPD of Hydrocarbons (HC). • HC Emissions Only. • Gasoline Fueled 2 and 4 Stroke Engines. • Assume 100% Container Fills For 0 - 25 hp. • Assume Container Refueling For Some Categories >25 hp (ex: Personal Watercraft).

  6. ‘Spill-Proof’ Container Performance Specifications • Automatic Fuel Shut-Off To Prevent Overfilling. • Container Closed When Not In Use (with or without nozzle attached). • Container Vented Only Through Nozzle. • Ability To Recover Displaced Refueling Vapors. • Minimum Fuel Flow Rate (1 L in 15 Sec?). • One Year Warranty.

  7. Implementation • Proposed Regulation Adopted By ARB Spring ‘99. • Mfgr’s Comply w/ New Regulation Jan. 1, 2001 (Proposed). • Average Container Life Span 6 years. • Full Compliance by 2007.

  8. Preliminary Test Data • Developed Test Bench to Quantify HC Emissions. • Conducted Controlled Refueling Tests.

  9. Prototype Test Bench

  10. Test Bench Data • HC Emissions Using Portable FID @ 1 Sec Intervals. • Constant Flow Rate In Duct, Monitored w/ Velocity Sensor. • Ambient Temp and Pressure, Duct Temp. • Container Weighed Before & After Refueling Event.

  11. DRAFT ONLY

  12. Conventional vs. Spillproof Data DRAFT ONLY

  13. Spillage Emissions Inventory • Assume 100% Container Fills For 0-25 hp. • Assume 100% Pump Fills >25 hp. • Two Exceptions To Above: Personal Watercraft & Off-Road Recreation. • Assume All Refuelings Are Fill-Ups

  14. Spillage Emissions Factors • Refueling Event: 17 g/event • Transport & Storage: 20 g/gal • Container Diurnal & Breathing: 1g/gal/day • Displaced Vapor: 1g/gal

  15. Next Steps • Consensus Needed On Performance Specs. • New Products Needed For Larger Container Openings. • Emissions Data. • Economic Impact Survey.

  16. Tentative Regulatory Schedule • Emissions Inventory Presented For Board Consideration December ‘98. • January ‘99 Workshop For Proposed Control Measure. • Staff Report For Proposed Control Measure Will Be Issued 45 Days Prior to Board Consideration in Spring ‘99.

  17. For More Information • http:/www.arb.ca.gov/spillcon/spillcon.htm • Dean Bloudoff - (916) 263-2070 • Email - dbloudof@cleanair.arb.ca.gov

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