fuels workshop l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Fuels Workshop PowerPoint Presentation
Download Presentation
Fuels Workshop

Loading in 2 Seconds...

play fullscreen
1 / 25

Fuels Workshop - PowerPoint PPT Presentation


  • 174 Views
  • Uploaded on

Fuels Workshop. May 2, 2005. California Environmental Protection Agency. Air Resources Board. Agenda. Introduction Topics ( presentation by ARB and Others ): Additives Silver-Corrosion Inhibitors Gasoline CaRFG3 Predictive Model Update Permeation Emissions Estimate Test Methods

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 'Fuels Workshop' - bernad


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
fuels workshop

Fuels Workshop

May 2, 2005

California Environmental Protection Agency

Air Resources Board

agenda
Agenda
  • Introduction
  • Topics (presentation by ARB and Others):
    • Additives
      • Silver-Corrosion Inhibitors
    • Gasoline
      • CaRFG3 Predictive Model Update
      • Permeation Emissions Estimate
      • Test Methods
      • CARBOB Model Validation
    • Diesel
      • Lubricity
      • Biodiesel
  • Other Topics?
  • Open Discussions
  • Closing Remarks
overview

Additives

Overview
  • The problem
    • Fuel Sending Unit Failures
  • Actions Taken
  • Silver Corrosion Inhibitors
fuel sending unit failures

Additives

Fuel Sending Unit Failures
  • Failures
    • Widespread Failures in the Northeast and Gulf Coast in 2004
  • Failures Caused by Corrosion
  • Corrosion Caused by Elemental Sulfur in Gasoline
    • Traces of reactive sulfurs (i.e hydrogen sulfide, mercaptans) act synergistically
actions taken

Additives

Actions Taken
  • ASTM adopted Silver Corrosion Standard and Silver Strip Test
  • Refineries are examining their operations
  • Test batches of gasoline
    • Additize as necessary
    • Correct refinery operations
  • Improve new fuel sensors
silver corrosion inhibitors

Additives

Silver Corrosion Inhibitors
  • Chemistry/Properties
  • Treat Rates
  • Causes Engine Deposits
engine deposits

Additives

Engine Deposits
  • At the maximum recommended dosage rate, engine deposits can increase
  • Adequate levels of detergent additive can mitigate deposit forming tendency of corrosion inhibitors
findings

Additives

Findings
  • Anticipate no problem with the current recommended use of silver corrosion inhibitors
  • Refinery use is intermittent
  • Need to monitor
proposed arb staff advisory

Additives

Proposed ARB Staff Advisory
  • Monitoring Program
  • Inclusion of Additive in Certification Test Fuel
certification test fuels

Additives

Certification Test Fuels

For future gasoline certifications:

  • Silver corrosion inhibitor will be a required component of the certification test fuel
  • Silver corrosion inhibitor is added at the maximum recommended treat rate
  • Exception for oil companies not planning to use silver corrosion inhibitors
carfg3 predictive model update

Gasoline

CaRFG3 Predictive Model Update
  • New Data Set Sources:
    • Alliance of Automobile Manufacturers
    • CRC E67 Study conducted by CE-CERT, UC Riverside
    • Other ?
  • Availability?
permeation

Gasoline

Permeation
  • In 1999, ARB staff learned that ethanol in gasoline increases evaporative emissions through a process known as permeation
  • Permeation is when fuel migrates through the soft fuel system found on motor vehicles
  • At the 1999 Hearing, the Board directed staff to conduct permeation study and report back
permeation test program

Gasoline

Permeation Test Program
  • In 2002, the CRC and ARB co-funded permeation study
  • Results:
    • Ethanol fuel higher than MTBE on all vehicles and higher than non-oxy on almost all vehicles
    • 65% or 1.4 grams/day more than MTBE gasoline
    • 45% or 1.1 grams/day more than non-oxygenated gasoline
permeation emissions increase

Gasoline

Permeation Emissions Increase
  • Study results do not directly provide the emissions impact of permeation
  • Vehicle activity and fuel temperature data must be integrated to provide an appropriate temporal and spatial distribution of emissions
  • Staff receiving public comments on permeation emissions draft report
how to deal with the hydrocarbon emissions increase from ethanol use

Gasoline

How to Deal with the Hydrocarbon Emissions Increase from Ethanol Use?
  • Hydrocarbon emissions increase well into the foreseeable future
    • New vehicle standards help
    • Slow turn over of fleet
  • Report back to the Board later this year
    • Better estimate of ethanol permeation impact on emissions
    • Measures to mitigate the impact
what s next

Gasoline

What’s Next
  • The CRC is proceeding with a second stage of the test program
  • Two additional vehicles: LEV II and PZEV
  • Two additional fuels: 10% ethanol and a higher aromatics fuel
  • E-85 will also be tested on an flexible fueled vehicle
carbob model validation

Gasoline

CARBOB Model Validation
  • CARBOB regulation approved by Board April 25, 2001
  • CARBOB regulation allows refiners to certify blends without having to do hand blends of ethanol
  • The Board directed staff to validate the CARBOB model using Phase 3 RFG
  • Refiners have submitted their data
  • Expect work to be finished by the end of the summer