Exhaust Aftertreatment Modeling


GT-SUITE and GT-POWER simulation software includes a complete exhaust aftertreatment (AT) and chemical kinetics library for modeling catalysts and filters. This enables the user to model any AT device in isolation or within an integrated system, while providing the user the complete flexibility to modify and impose the participating kinetic reaction mechanisms. The design of this library is consistent with our goal to provide a single tool for simulation of all aspects of engine and vehicle systems. This library allows modeling the exhaust aftertreatment system together with vehicle, engine, thermal management, and control systems, making this tool uniquely suitable for collaborative development. The most important features of this library are as follows:

Product Highlights

  • Built-in two-way coupling with 3D CFD (CONVERGE ™)
  • Quasi 2D/3D modeling of filters and catalysts
  • Highly flexible and intuitive user interface for entering any reaction mechanism
  • Advanced Adaptive chemistry solver for catalyst modeling, capable of solving stiff non-linear systems with speed and accuracy
  • Fast and efficient Quasi-Steady (QS) solver compatible with Real Time (RT) solver
  • Built-in direct and DOE optimizers for kinetic parameter calibration, including genetic algorithm (GA)

Advanced Features and Applications

  • Typical Applications
    • Three Way Catalyst (TWC)
    • Diesel Oxidation Catalyst (DOC)
    • Lean NOx Trap (LNT)
    • NOx Adsorber Catalyst (NAC)
    • NOx Storage and Reduction Catalyst (NSRC, NSR)
    • Diesel Particulate Filter (DPF)
    • Gasoline Particulate Filter (GPF)
    • Catalyzed DPF (C-DPF)
    • Selective Catalytic Reduction (SCR)
    • SCR coated DPF (SCR-DPF)
    • Ammonia Oxidation Catalyst (AOC/AMOX), Ammonia Slip Catalyst (ASC)
    • Methane Oxidation Catalyst (MOC)
    • Electrically Heated Catalyst (EHC)
  • Run as a standalone model or as a part of an integrated system comprising engine, vehicle, and control sub-systems
  • Virtual coupling with other sub-systems to achieve RT performance without sacrificing accuracy
  • Designed for use in reagent control (urea, ammonia, fuel) and regeneration strategies
  • Ideal for drive cycle simulations and real driving emissions (RDE)
  • Can be used for ECU compatible aftertreatment plant model development

These capabilities are included with every GT-SUITE license.