Fuel and diluent effects on diesel odor species in a premixed flat flame

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5543461

Tumati, P R; Patridge, P A; Cernansky, N P; Cohen, R S

As a group of diesel engine exhaust products, oxygenated hydrocarbons have been found to be responsible for the characteristic diesel odor. Contadictory effects of fuel properties on the emission levels of these species in both diesel engines and spray burner experiments have been reported. In the present study, a prevaporized premixed flat flame was used to investigate the fuel and diluent effects on these species. The results suggest a definite fuel effect on formation rates of oxygenates. In general, aromatic fuels produced higher concentration levels of oxygenates than paraffins, and the oxygenate concentration increases as the carbon number increases for the straight chain compounds. GC/MS analysis of the oxygenate fraction of the samples indicated a similar oxidation mechanism for all alkanes. Branching of alkanes was found to lead to more cyclization, but not always higher oxygenate levels. The addition of CO/sub 2/ as a diluent in the combustion air increased the levels of oxygenates in the flame and post flame zones. However, diffusivity of the mixture was found to have no such effect. GC/MS analysis of the CO/sub 2/ diluted samples indicated a suppression of ring formation relative to air only samples.

• Research Organization: Mech. Eng. Dept., Tuskagee Univ., Tuskagee, AL
• OSTI ID: 5543461
• Report Number(s): CONF-860203-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
025000 -- Petroleum-- Combustion
33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSTRACTS
ADDITIVES
ALKANES
AROMATICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
DEHYDROCYCLIZATION
DIESEL ENGINES
DIESEL FUELS
DILUTION
DOCUMENT TYPES
ELEMENTS
ENGINES
EVAPORATION
EXHAUST GASES
FLAME PROPAGATION
FLUIDS
FUEL ADDITIVES
FUEL-AIR RATIO
GAS CHROMATOGRAPHY
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
LEADING ABSTRACT
MASS SPECTROSCOPY
MEETINGS
MIXING
NONMETALS
ODOR
ORGANIC COMPOUNDS
ORGANOLEPTIC PROPERTIES
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARAFFIN
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
QUANTITATIVE CHEMICAL ANALYSIS
RINGS
SEPARATION PROCESSES
SPECTROSCOPY
WASTES
WAXES