Combustion and Emissions Simulation

GT-POWER includes various solutions for modeling combustion and emissions

Application Highlights & Features
Additional Resources

Combustion & EmissionsAPPLICATION HIGHLIGHTS

Predictive combustion models for:
- Multi-pulse direct injection diesel
- Port and/or direct injection spark ignition
- Dual-fuel (premixed fuel-air mixture ignited by direct injection)
- Pre-chamber jet ignition
- HCCI
- User code
Imposed burn rate profiles for any combustion concept (derived from cylinder pressure analysis, Wiebe, map based, neural network, etc.)
Predictive emissions models for NOx, HC, CO and soot
Predictive cycle to cycle variation (CCV) models
Predictive knock models
New sub-models for alternative fuels including laminar flame speed models for hydrogen, ammonia, and methanol as well as a predictive fuel stratification model for direct injected hydrogen

SI TurbPREDICTIVE SI COMBUSTION

With SI Turb, users are provided a two-zone, entrainment and burn-up model which also include:

Combustion rates predicted based on in-cylinder conditions
- Head and piston crown geometry from 3D-CAD
- Spark Timing and Location(s)
- Fuel Properties
- Mixture Composition
- Turbulence (incl. tumble and swirl effects)

High accuracy, fast run times
- Detailed Analysis (Knock, CCV, Emissions)
- Fast Running Models

DIPulsePREDICTIVE DIESEL COMBUSTION

With DIPulse, users are provided a phenomenological combustion model that’s designed to handle modern multi-pulse injection.

DIPulse capabilities include:

Combustion rate predicted based on in-cylinder conditions
- Pressure and temperature
- Mixture composition (fresh air, fuel, EGR/residuals)
- Injection timings and profiles
Fast run time
Real Time/HiL capable

Fast Chemistry SolverMAGNITUDE SPEED UP WITH ACT

ACT (Advanced Combustion Toolset) is a collection of productivity tools that enable both increased model fidelity and faster runtimes. It includes a state of the art chemical kinetics solver that offers significantly improved computational times, enabling usage of more detailed mechanisms. Potential applications for detailed kinetics include:

Chemistry in Cylinder Unburned Zone (Knock)
Chemistry in Cylinder Burned Zone (Emissions)
Chemistry in Pipes/Flowsplits (Exhaust Manifold Oxidation)

Advanced Features

Model any combustion mode with any fuel (SI, diesel, dual-fuel, pre-chamber, HCCI, etc.)
Model mean cycle combustion and CCV
Detailed kinetics or partial equilibrium for calculating any emissions species
Predict knock boundary or evaluate knock onset and intensity using detailed kinetics or induction time integral models
Calculate in-cylinder flow and turbulence model which couples to combustion and heat transfer models
Model combustion interaction with cylinder FE wall temperature solution
Model in-cylinder evaporation