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

Conference · Sat Dec 31 23:00:00 EST 1988

OSTI ID:5509255

Henig, Y; Addagaria, S; Miller, D L; Wilk, R D; Cernansky, N P

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--
• Country of Publication: United States
• Language: English

Related Subjects

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