1984-09-01

Impact of fuel composition on octane requirement 841291

SYNOPSISFuel composition can affect the octane requirement of a spark ignition engine. Three cars of one European model were run to 80,000 km on fuels containing 0, 0.15,and 0.4 g Pb/litre. Differences in octane requirement among the various fuels were found as the distance traveled increased. This paper also describes octane requirement differences after combustion chamber deposits were removed.

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