Abstract
The paper describes a two-dimensional model used to simulation of temperature field and composition of exhaust gases components in multisection catalyst converter run in transient and steady states. The model takes into consideration a phenomena of convection heat exchange, mass exchange in solid and gas phases, axial and radial heat conduction in monolith as well as chemical reactions and heat released during the reaction. The model was implemented to analysis of transient phases within axial-symmetric, three-section catalytic converter with ceramic insert during stage of warming-up. One has presented a mathematical and numerical model and results of preliminary calculations.