Abstract: Understanding hydrocarbon species present in engine exhaust gas is important to the development of combustion and aftertreatment technologies and strategies that reduce exhaust emissions from gasoline and diesel engines. A methodology for sampling and analyzing volatile and semi-volatile hydrocarbons ranging from C1-C22 from fuels and engine exhaust was developed. Gas chromatography is used with flame ionization detectors to identify and quantify the hydrocarbons. Our goals are to characterize the global hydrocarbon trends from internal combustion engines utilizing various technologies, gain a fundamental understanding of these technologies and find optimal strategies of reducing hydrocarbon emissions from engine exhaust

Work being done:

Speciation of Isuzu 4-cylinder high speed diesel engine

• Pre- and post-catalyst hydrocarbon speciation of combustion strategies including lean premixed combustion, rich premixed combustion and lean conventional combustion.

• Hydrocarbon conversion efficiency speciation of a Diesels Oxidation Catalyst (DOC) degreening.