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A One-Dimensional Model for Monolithic Converter: Numerical Simulation and Experimental Verification of Conversion and Thermal Responses for Two-Stroke Engine
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Abstract
A transient one-dimensional model developed to simulate the thermal and conversion characteristics of adiabatic monolithic converters operating under warm-up conditions is presented. The model takes into account the gas-solid heat and mass transfer, axial heat, conduction, chemical reactions and the related heat release.
The model has been used to analyze the transient response of an axisymmetric catalytic converter during a warm-up as a function of catalyst design parameters and operating conditions in order to observe their effects on the lightoff behaviour.
The experimental test was carried out in two steps: the first on a sample for lightoff test and the second on two-stroke 150 cc engine with Pt/Rh metal-supported catalyst and full open-throttle condition. The simulated temperatures are close to test results. The predicted conversion efficiencies are qualitatively acceptable.
Authors
Citation
Cundari, D. and Nuti, M., "A One-Dimensional Model for Monolithic Converter: Numerical Simulation and Experimental Verification of Conversion and Thermal Responses for Two-Stroke Engine," SAE Technical Paper 910668, 1991, https://doi.org/10.4271/910668.Also In
References
- NUTI Marco “Optimization of Engine Emissions and Fuel Consumption with Engine Mapping Method” XXXVI ATI Congress 1981
- OH Se H. CAVENDISH James C. “Transients of Monolithic Catalytic Converters: Response to Step Changes in Feedstream Temperature as Related to Controlling Automobile Emissions” Ind. Eng. Chem. Prod. Res. Dev. 21 29 1982
- YOUNG Larry C. FINLAYSON Bruce A. “Mathematical Models of the Monolith Catalytic Converter: Part I. Development of Model and Application of Orthogonal Collocation” AlChE Journal 22 2 331 March 1976
- HECK Roland H. WEI James KATZER James R. “Mathematical Modeling of Monolithic Catalysts” AlChE Journal 22 3 477 May 1976
- CUNDARI Dario 1989
- OH Se H. Van OSTROM David L. CHEN David K. S. BISSETT Edward J. “A Three-Dimensional Model for the Analysis of Transient Thermal and Conversion Characteristics of Monolithic Catalytic Converter” SAE paper 880282 1988
- CHEN David K. S. COLE Carilee E. “Numerical Simulation and Experimental Verification of Conversion and Thermal Responses for a Pt/Rh Metal Monolithic Converter” SAE paper 890798 1989
- VOLTZ Sterling E. MORGAN Charles R. LIEDERMAN David JACOB Solomon M. “Kinetic Study of Carbon Monoxide and Propylene Oxidation on Platinum Catalysts” Ind. Eng. Chem. Prod. Res. Dev. 12 294 1973
- SHAH R. K. LONDON A. L. “Laminar Flow Forced Convection Heat Transfer and Flow Friction in Straight and Curved Ducts - A Summary of Analytical Solutions” Technical Report n. 75 Stanford University 1971