Octane Requirement Increase of 1984 Model Vehicles.
COORDINATING RESEARCH COUNCIL INC ATLANTA GA
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Octane requirement increase ORI was determined for sixty-two 1984 model cars and trucks operated on unleaded gasoline. The cars tested were not selected to represent the distribution of vehicles produced in the model year rather the data base consists of information volunteered by participants. All ORI values were determined from the increase in maximum octane requirements irrespective of whether requirements were obtained at full- or part-throttle. Though the sample size is smaller than in previous years, it does not appear to have significantly affected the conclusions. Contents Vehicles Tested Mileage Accumulation Average Sensitivity Full-Boiling Range Unleaded Reference Fuel FBRU High Sensitivity Full-Boiling Range Unleaded Reference Fuel FBRSU Primary Reference PR Fuel Test Technique Data Analysis Technique Comparison of 1975 through 1984 ORI Studies ORI Versus Initial Octane Requirements.