Octane-requirement increase of 1988 and 1989 model vehicles. Revision

Technical Report · Mon Jun 01 00:00:00 EDT 1992

OSTI ID:7006862

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 continued.

• Research Organization: Coordinating Research Council, Inc., Atlanta, GA (United States)
• OSTI ID: 7006862
• Report Number(s): AD-A-253357/8/XAB; CRC--576-REV
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
AIR POLLUTION
ALKANES
AUTOMOBILES
AUTOMOTIVE FUELS
CATALYTIC CONVERTERS
CONTROL
EMISSION
ENERGY CONSUMPTION
EQUIPMENT
FUEL CONSUMPTION
FUELS
GASOLINE
HYDROCARBONS
KNOCK CONTROL
LIQUID FUELS
MODIFICATIONS
OCTANE
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLLUTION
POLLUTION CONTROL EQUIPMENT
UNLEADED GASOLINE
VARIATIONS
VEHICLES