Mathematical modeling of automotive three-way catalytic converters with oxygen storage capacity

Abstract Mathematical models of monolithic three-way catalytic converters have been developed, which account for transient conversion efficiency and oxygen storage capacity. These models, with different degrees of complexity, are intended for use during several stages of the design of A/F ratio controllers and on-board diagnostic systems for SI engines. First, a model with one space variable, accounting for thermal effects, is presented. Then two lumped-parameter models are obtained, in the case of the hot phase, with 5 and 3 state variables respectively, for use in long-term simulation or real-time computations.

[1]  Donald W. Schwendeman,et al.  Light-off Behavior of Catalytic Converters , 1994, SIAM J. Appl. Math..

[2]  Michael A. Shulman,et al.  A Closed-Loop A/F Control Model for Internal Combustion Engines , 1980 .

[3]  Denis Dochain,et al.  Modelling and adaptive control of nonlinear distributed parameter bioreactors via orthogonal collocation , 1992, Autom..

[4]  M. Sorine.  Modélisation d'un moteur thermique dépollué en vue de la conception de systèmes de commande et de surveillance/diagnostic , 1997 .

[5]  Akira Takahashi,et al.  Fuel Injection Control Systems that Improve Three Way Catalyst Conversion Efficiency , 1991 .

[6]  Karl Johan Åström,et al.  Adaptive Control , 1989, Embedded Digital Control with Microcontrollers.

[7]  James Wei,et al.  Mathematical modeling of monolithic catalysts , 1976 .

[8]  Toyoakl Fukui,et al.  Accuracy of A/F Calculation from Exhaust Gas Composition of SI Engines , 1989 .

[9]  Rutherford Aris,et al.  Computational methods for the tubular chemical reactor , 1976 .

[10]  Mark W. Verbrugge,et al.  Mathematical analysis of potentiometric oxygen sensors for combustion-gas streams , 1994 .

[11]  Allen H. Meitzler.  Application of Exhaust- Gas- Oxygen Sensors to the Study of Storage Effects in Automotive Three-Way Catalysts , 1980 .

[12]  D. Dochain,et al.  On-Line Estimation and Adaptive Control of Bioreactors , 2013 .

[13]  Joseph R. Theis,et al.  The Role of Ceria in Automotive Exhaust Catalysis and OBD-II Catalyst Monitoring , 1993 .

[14]  James C. Cavendish,et al.  Transients of monolithic catalytic converters. Response to step changes in feedstream temperature as related to controlling automobile emissions , 1982 .

[15]  Jeffrey Scott Hepburn,et al.  The Relationship Between Catalyst Hydrocarbon Conversion Efficiency and Oxygen Storage Capacity , 1992 .

[16]  C. Falk,et al.  Three-Way Conversion Catalysts: Effect of Closed-Loop Feed-Back Control and Other Parameters on Catalyst Efficiency , 1980 .

[17]  David L. Van Ostrom,et al.  A Three-Dimensional Model for the Analysis of Transient Thermal and Conversion Characteristics of Monolithic Catalytic Converters , 1988 .

[18]  Bruce A. Finlayson,et al.  Mathematical models of the monolith catalytic converter: Part II. Application to automobile exhaust , 1976 .

[19]  Richard K. Herz,et al.  Dynamic behavior of automotive catalysts. 1. Catalyst oxidation and reduction , 1981 .

[20]  Michael A. Sabourin,et al.  Detection of Catalyst Failure On-Vehicle Using the Dual Oxygen Sensor Method , 1991 .

[21]  J. Norbury,et al.  Mathematical modelling of catalytic converters , 1993 .

[22]  Bruce A. Finlayson,et al.  Mathematical models of the monolith catalytic converter: Part I. Development of model and application of orthogonal collocation , 1976 .