Catalyst selection for lean combustion engines
Conference
·
OSTI ID:5032382
A modeling procedure for selecting exhaust gas oxidation catalysts was applied to a lean air/fuel, high compression engine. The procedure was used to select the lowest cost catalyst that could meet given CVS C/H emission targets. The procedure consisted of 1) aging a variety of oxidation catalysts using an engine dynamometer, 2) measuring the conversion efficiencies of the aged catalysts during increasing and steady temperature conditions, 3) determining relevant properties of the exhaust gas at the catalyst inlet, 4) determining the activity parameters for oxidizing hydrocarbons, HC, and carbon monoxide, CO, on the aged catalysts, 5) predicting vehicle CVS HC and CO emissions as a function of catalyst volume, and 6) determining the most cost effective catalyst to meet a given CVS emission level as a function of the precious metal used, its concentration, the catalyst volume, and their incremental costs. The results of this procedure are valid only for the vehicle, catalysts and catalyst aging procedure used.
- OSTI ID:
- 5032382
- Report Number(s):
- CONF-871142-
- Country of Publication:
- United States
- Language:
- English
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·
OSTI ID:7317889
Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330702* -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATION ENERGY
AIR POLLUTION CONTROL
AIR POLLUTION MONITORING
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPRESSION RATIO
CONTROL
DYNAMOMETERS
ELEMENTS
EMISSION
ENERGY
ENGINES
EXHAUST GASES
FLUIDS
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
METALS
METERING
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
WASTES
330702* -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATION ENERGY
AIR POLLUTION CONTROL
AIR POLLUTION MONITORING
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPRESSION RATIO
CONTROL
DYNAMOMETERS
ELEMENTS
EMISSION
ENERGY
ENGINES
EXHAUST GASES
FLUIDS
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
METALS
METERING
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
WASTES