The widening of the selectivity windows of a three-way catalyst under A/F ratio modulation was shown to result from retention of adsorbed species on catalyst surfaces and their subsequent reaction with gas-phase reactants. A reaction model was developed based on adsorption properties of CO, HC and NOx and by computer simulation, the conversion efficiencies of CO, HC and NOx under A/F ratio modulation were calculated. The calculated and experimental results were in good agreement.
Effect of Air-Fuel Ratio Modulation on Conversion Efficiency of Three-Way Catalysts
Sae Technical Papers
Passenger Car Meeting & Exposition ; 1978
1978-02-01
Conference paper
English
Effect of air-fuel ratio modulation on conversion efficiency of three- way catalysts
Automotive engineering | 1978
|Automotive engineering | 2000
|Closed-Loop Air-Fuel Ratio Control Using Forced Air-Fuel Ratio Modulation
SAE Technical Papers | 1998
|Closed-loop air-fuel ratio control using forced air-fuel ratio modulation
Automotive engineering | 1998
|SAE Technical Papers | 2000
|