Dynamic behavior of automotive catalysts. 4. Impact of air/fuel ratio excursions during driving

Journal Article · Sun Sep 01 00:00:00 EDT 1985 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i300019a009· OSTI ID:6365164

Herz, R K; Shinouskis, E J

Previous studies of the transient response of three-way automotive catalysts to rapid changes in air/fuel ratio have considered constant speed operation only. The present work analyzes and compares emissions measure over two different three-way catalysts during the warmed-up portion of the Federal test procedure. A computerized relational data base was used to analyze the large amount of data recorded in each test run. The results demonstrate that the large-amplitude, long-duration rich excursions that occur during variable-speed driving have a major impact on CO, hydrocarbon, and NO emissions.

• Research Organization: Physical Chemistry Department, General Motors Research Laboratories, Warren, Michigan
• OSTI ID: 6365164
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Vol. 24:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
AUTOMOTIVE FUELS
CATALYSTS
COMBUSTION PRODUCTS
FUEL-AIR RATIO
HYDRODYNAMICS
VEHICLES
EMISSION
CARBON MONOXIDE
COMBUSTION CONTROL
COMPUTER CALCULATIONS
DATA BASE MANAGEMENT
FUEL ADDITIVES
HYDROCARBONS
MATERIALS TESTING
MONITORING
NITROGEN OXIDES
OPERATION
ADDITIVES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CONTROL
FLUID MECHANICS
FUELS
MANAGEMENT
MECHANICS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
TESTING
023000* - Petroleum- Properties & Composition
025000 - Petroleum- Combustion
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)