Products

GT-xCHEM

GT-xCHEM is an exhaust aftertreatment and chemical systems add-on for GT-SUITE with extensive capabilities for emissions reduction and clean technology solutions

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Overview

WHAT IS GT-xCHEM?

GT-xCHEM unifies the best-in-class capabilities of exothermia suite and GT-SUITE for exhaust aftertreatment and chemical systems solutions and delivers new capabilities essential for the development of regulatory compliant emissions systems. In addition, it supports expansion into chemical systems applications related to the mobility and stationary power industries such as fuel reformers for hydrogen fuel cells, CO2 capture and storage, and other chemical processing applications. 

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Advanced Features

In addition to standard exhaust aftertreatment, evaporative emissions, and reformer modeling features, GT-xCHEM offers the following new advanced features with the initial launch in V2023 Build 1.

Detailed Narrow and Wide Band Lambda (Oxygen) Sensors

GT-xCHEM provides physics-based models for both narrow band (switching) and wide band (UEGO) lambda sensors, capturing electrochemical behavior, reaction-diffusion kinetics, and thermal response to accurately predict air-to-fuel ratio control across a wide range of operating conditions.

Detailed NOx Sensor

Physics-based model for NOx sensors that captures the electrochemical and catalytic processes across dual internal cavities, including O2 pumping, reaction-diffusion kinetics, and thermal response, to accurately predict NOx concentrations in exhaust gas across all operating conditions.

Electrically Heated Catalyst (EHC) with electrodes on periphery

Models resistive heating, current distribution, and thermal response in peripheral-electrode EHC configurations to support rapid catalyst light-off and cold-start emissions reduction.

Model Integration with GT-SUITE

Deploy models developed in GT-SUITE applications directly into real-time execution environments.

1D Urea and Fuel Droplet Tracking Model

Tracks injected urea and fuel droplets through trajectory, diffusion-controlled evaporation, and wall impingement, capturing droplet rebound, wall film formation, and splash regimes to accurately predict ammonia generation and deposit formation.

Structured Mesh with Symmetry Sectors

Supports structured mesh configurations with symmetry sector options — 45°, 90°, 180°, or custom — solving only a representative portion of the converter to significantly reduce computation time while maintaining simulation accuracy.

How it Works

Industry-leading GT-SUITE simulation products powered by GT-xCHEM for advanced chemical systems modeling and exhaust aftertreatment simulation.

  • GT-xCHEM Aftertreatment Modeling

    GT-xCHEM builds upon a long tradition of exhaust aftertreatment modeling with GT-SUITE including the following highlights:

    • Predictive tailpipe emissions with or without integrating with engine, vehicle, controls, etc.
    • Design aftertreatment system components (catalyst sizing, washcoat loading, topologies, etc.)
    • Can be used for control system development for fuel dosing, urea injection, warmup strategies
    • Ideal for drive cycle simulations, real driving emissions (RDE), and real world emissions (route)
    • Highly flexible and intuitive user interface for reaction mechanism development
    • State-of-the-art mechanisms and validation results for many catalysts and particulate filters
    • Fast quasi-2D/3D modeling capability developed from the successful 1D solution
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  • Chemical Systems Modeling with GT-xCHEM

    The reactor modeling capabilities of GT-xCHEM are adaptable to accommodate research and development of new clean technologies:

    • Fuel reformers and cracking catalysts for producing hydrogen for fuel cells and H2 ICEs
    • Synthesis of carbon neutral fuels
    • CO2 capture and storage
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Part of the GT-SUITE Ecosystem

Uses GT-SUITE Models

Directly deploys vehicle system models developed within GT-SUITE applications, maintaining model fidelity and physics-based accuracy.

Extends Modelling into Real-Time Deployment

Directly deploys vehicle system models developed within GT-SUITE applications, maintaining model fidelity and physics-based accuracy.

Compatible with GT-AutoLion

Works alongside GT-POWER’s real-time capabilities to support powertrain and vehicle-level real-time simulation requirements.

Works with Control Strategies

Integrates control logic and strategy validation within real-time scenarios, supporting control development workflows.

Industries Served

Trusted by engineering teams across diverse industries worldwide

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Rail

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Oil & Gas

Technical Resources

Case Studies

Real-world applications demonstrating GT-SUITE capabilities.

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Technical Papers

Published research and validation studies documenting GT-SUITE accuracy and methodology.

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Webinars

On-demand technical presentations covering GT-SUITE features, best practices, and applications.

Resources

Connect with an Expert

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