Intermediate Ethanol Blends Catalyst Durability Program Metadata

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  • Main Title Intermediate Ethanol Blends Catalyst Durability Program


  • Author: West, Brian H
    Creator Type: Personal
  • Author: Sluder, Scott
    Creator Type: Personal
  • Author: Knoll, Keith
    Creator Type: Personal
  • Author: Orban, John
    Creator Type: Personal
  • Author: Feng, Jingyu
    Creator Type: Personal


  • Sponsor: USDOE EE Office of Technology Development (EE-20)
    Contributor Type: Organization


  • Name: Oak Ridge National Laboratory
    Place of Publication: Oak Ridge, Tennessee
    Additional Info: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)


  • Creation: 2012-02-01


  • English


  • Content Description: In the summer of 2007, the U.S. Department of Energy (DOE) initiated a test program to evaluate the potential impacts of intermediate ethanol blends (also known as mid-level blends) on legacy vehicles and other engines. The purpose of the test program was to develop information important to assessing the viability of using intermediate blends as a contributor to meeting national goals for the use of renewable fuels. Through a wide range of experimental activities, DOE is evaluating the effects of E15 and E20 - gasoline blended with 15% and 20% ethanol - on tailpipe and evaporative emissions, catalyst and engine durability, vehicle driveability, engine operability, and vehicle and engine materials. This report provides the results of the catalyst durability study, a substantial part of the overall test program. Results from additional projects will be reported separately. The principal purpose of the catalyst durability study was to investigate the effects of adding up to 20% ethanol to gasoline on the durability of catalysts and other aspects of the emissions control systems of vehicles. Section 1 provides further information about the purpose and context of the study. Section 2 describes the experimental approach for the test program, including vehicle selection, aging and emissions test cycle, fuel selection, and data handling and analysis. Section 3 summarizes the effects of the ethanol blends on emissions and fuel economy of the test vehicles. Section 4 summarizes notable unscheduled maintenance and testing issues experienced during the program. The appendixes provide additional detail about the statistical models used in the analysis, detailed statistical analyses, and detailed vehicle specifications.


  • Keyword: Aging
  • STI Subject Categories: 02 Petroleum
  • Keyword: Testing
  • Keyword: Engines
  • Keyword: Gasoline
  • Keyword: Catalysts
  • Keyword: Viability
  • Keyword: Fuel Consumption
  • Keyword: Maintenance
  • Keyword: Specifications
  • Keyword: Ethanol
  • Keyword: Statistical Models
  • Keyword: Control Systems


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: ORNL/TM-2011/234
  • Grant Number: DE-AC05-00OR22725
  • DOI: 10.2172/1035578
  • Office of Scientific & Technical Information Report Number: 1035578
  • Archival Resource Key: ark:/67531/metadc833840