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Title: Autoignition of n-butane/isobutane blends in a knock research engine

Conference ·
OSTI ID:5509255
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This paper describes experiments conducted using a single cylinder, spark ignition research engine to examine the effect of the branched chain alkane isobutane (RON 102) on the autoignition chemistry of straight chain n-butane (RON 94). Isobutane was added in increasing quantities. Measurement of cylinder pressure and the analysis of end gas species were used as diagnostics to determine the knock point and ascertain the end gas reactivity. Examination of the chemical species in the end gas suggests that low temperature chemical reactions are occurring; and increasing the amounts of isobutane in the fuel mixture leads to higher yields of propene and chain terminating methyl radicals.

OSTI ID:
5509255
Report Number(s):
CONF-890240-
Resource Relation:
Conference: Society of Automotive Engineers international congress and exposition, Detroit, MI (USA), 27 Feb - 3 Mar 1989; Other Information: Technical Paper 890157
Country of Publication:
United States
Language:
English

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02 PETROLEUM
33 ADVANCED PROPULSION SYSTEMS
2-METHYLPROPANE
IGNITION
BUTANE
SPARK IGNITION ENGINES
IGNITION QUALITY
ANTIKNOCK RATINGS
AUTOMOTIVE FUELS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
KNOCK CONTROL
ALKANES
CONTROL
ENGINES
FUELS
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
KINETICS
ORGANIC COMPOUNDS
REACTION KINETICS
025000* - Petroleum- Combustion
330101 - Internal Combustion Engines- Spark-Ignition