California Environmental Protection Agency
Download
1 / 13

public workshop to discuss the need for amendments to the ... - PowerPoint PPT Presentation


  • 229 Views
  • Uploaded on

California Environmental Protection Agency. Air Resources Board. Public Workshop to Discuss the Need for Amendments to the Alternative Fuels Regulations Regarding Motor Vehicle LPG & CNG. June 21, 2000. Overview. Background LPG Issues CNG Issues Draft Concepts Future Activities.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'public workshop to discuss the need for amendments to the ...' - Jims


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Slide1 l.jpg

California Environmental Protection Agency

Air Resources Board

Public Workshop to Discuss the Need for Amendments to the Alternative Fuels Regulations Regarding Motor Vehicle LPG & CNG

June 21, 2000


Overview l.jpg
Overview

  • Background

  • LPG Issues

  • CNG Issues

  • Draft Concepts

  • Future Activities


Alternative fuels regulations l.jpg

Background

Alternative Fuels Regulations

  • Title 13, CCR, sections 2290-2292 originally adopted in 1992

  • Provides engine manufacturers with a known fuel quality for designing engines

  • Ensures consistent fuel quality to prevent engine performance problems and excess emissions


Motor vehicle lpg specifications l.jpg

Background

Motor Vehicle LPG Specifications

Propane (min.) 85 vol%

Propene (max.) 10.0 vol%

Pentenes +heavier (max.) 0.5 vol%

Butene (max.) 2.0 max%

Vapor Pressure (max.) 208 psig

Volatility Residue: (max.)

- Evap. Temp, 95% -37oF, or

- Butanes 5.0 vol%

Residual Matter:

- Residue on evap. of 0.05 ml

100 ml on oil stain obs.

Sulfur (max.) 80 ppmw

Water, Corrosion, Odorant


Motor vehicle cng specifications l.jpg

Methane (min.) 88 mol%

Ethane (max.) 6 mol%

C3+higher (max.) 3 mol%

C6+higher (max.) 0.2 mol%

Hydrogen 0.1 mol%

Carbon Dioxide 0.1 mol%

Oxygen 1.0 mol%

Inert Gases 1.5 - 4.5 mol%

Sulfur (max.) 16 ppmv

Water, Particulates, Odorant

Hydrocarbons

Other Species

Background

Motor Vehicle CNG Specifications


Lpg issues l.jpg
LPG Issues

  • Limited Northern CA. availability of LPG meeting the MV fuel specifications

    • Production- Refinery by-product, commercial vs. MVgrade

    • Distribution- No segregated system to handle two fuels

  • Limited supplies of MV LPG may affect the use of existing and siting of new LPG fleets

  • Transport/delivery trucks are fueled on the same LPG they carry as product

  • Safety concern with use of ASTM D 2784-89 to determine sulfur content of LPG


Cng issues l.jpg
CNG Issues

  • Limited availability of CNG meeting the MV fuel specifications in parts of San Joaquin Valley and South Central Coast

    • Production- Associated gas/oil production;

      commercial vs. MV grade

    • Distribution- No segregated distribution system to handle two fuels

  • CNG associated with oil production contains ethane in excess of 6 mol%

  • CNG fueling stations must blend to comply with CNG MV fuel specs

  • No new CNG fueling stations in these areas limit the siting of new CNG fleets


Draft concepts l.jpg
Draft Concepts

  • Evaluate captured fleet exemption for CNG & LPG

  • Consider LPG delivery truck exemption

  • Consider an alternative LPG sulfur test method(s)


Captured fleet exemption considerations l.jpg

Draft Concepts

Captured Fleet Exemption Considerations

  • Engine durability, performance, emissions

  • Liability

  • Misfueling

  • Fleet Management & Recordkeeping

  • Duration of exemption


Captured fleet exemption l.jpg

Draft Concepts

Captured Fleet Exemption

  • Limited geographic applicability

  • Applies only to commercial fleets w/central fueling facilities

  • Fleet owner uses off-spec fuel at own risk

    • Memorandum of understanding between fuel supplier, fleet owner & engine manufacturer

  • Fleet owner to safeguard against misfueling

  • Fleet owner must maintain records

  • Sunset provision


Captured fleet exemption potential concern l.jpg

Draft Concepts

Captured Fleet ExemptionPotential Concern

  • Unavailability of complying MV LPG/CNG at publicly accessible fueling locations

    • Consider requirement to maintain current supplies of complying fuel for public access vehicles


Other amendments l.jpg

Draft Concepts

Other Amendments

  • Consider LPG delivery truck exemption

    • Permanent vs. temporary

  • Consider alternative LPG sulfur detection test method(s)

    • Demonstrate stringency to 80 ppmw sulfur limit

    • Reproducibility and acccuracy to ASTM D 2784


Future activities l.jpg
Future Activities

  • Work with stakeholders to fully develop appropriate concepts

  • Next workshop planned for late July 2000

  • Tentative Board hearing scheduled for October 2000


ad