Abstract
Research was conducted to establish whether the operational reliability of engines will be affected by the use of a gasoline with an octane number two points lower than that of commercial AI-93 leaded gasoline with knock resistance in acceleration that is better than that of the AI-93 by approximately the same amount. Extended road tests were run in VAZ-2106 and Moskvich-2140 automobiles using gasoline with a research octane number of 91, containing an antiknock additive based on tetramethyl lead, and AI-93. The experimental AI-91 and the commercial AI-93 gasolines were prepared from the same base blend. Average specific fuel consumptions were identical for automobiles using AI-93 and AI-91 with the tetramethyl lead additive. For automobiles using AI-91 with the additive and with ethyl bromide as a lead scavenger the fuel consumption was 2% lower.
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