Octane Requirement Increase of 1988 and 1989 Model Vehicles

Abstract

The need to study octane requirement increase (ORI) with unleaded gasolines became evident in 1970 when manufacturers announced that future cars would require catalytic converters to meet 1975 emissions standards and these vehicles would use an unleaded fuel of at least 91 RON. The Coordinating Research Council, INC. (CRC) initiated a series of ORI programs in 1971 to study the effects of these vehicle, fuel, and emissions changes. Since that time, manufacturers have made many engine and vehicle changes to meet both emissions and fuel economy standards. Because of these continuing changes and the exclusive use of unleaded gasoline in new vehicles, the ORI programs have been discontinued. The ORI data from 1971 and 1973 through 1984 models have been reported in previous CRC publications. CRC sponsored a Society of Automotive Engineers (SAE) paper which reported 1985-1988 model data.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1991
Accession Number
ADA242615

Tags

DTIC Thesaurus Topics

  • Air Pollution
  • Aviation Fuels
  • Catalytic Converters
  • Customer Services
  • Data Analysis
  • Databases
  • Emission
  • Engineering
  • Fuels
  • Gasoline
  • Heavy Duty
  • Load Monitoring
  • New Jersey
  • Plastic Explosives
  • Standards
  • Test Vehicles
  • Vehicles

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