Multi-Dimensional Modeling of NO and Soot Emissions with Detailed Chemistry and Mixing in a Direct Injection Natural Gas Engine 2002-01-1112
This work reports the development and application of multi-dimensional ignition, combustion and emissions models that account for detailed chemistry and mixing effects in a direct injection engine simulation. A detailed chemical reaction mechanism, consisting of 24 species and 104 reactions, is used for increased accuracy of emissions predictions. Turbulent combustion is represented using a modified Eddy Dissipation Concept (EDC) model to account for mixing effects. The soot model includes all aspects of soot formation and destruction. Particle transport equations are used to realistically track transport of the soot particles formed. All computational sub-models developed in this work have been implemented in a modified version of the KIVA-3V code. In order to illustrate the behavior of the new models, soot and NO emissions have been predicted at different operating conditions by varying injection timing, exhaust gas recirculation (EGR) and injection pressure.
Citation: Hong, S., Assanis, D., and Wooldridge, M., "Multi-Dimensional Modeling of NO and Soot Emissions with Detailed Chemistry and Mixing in a Direct Injection Natural Gas Engine," SAE Technical Paper 2002-01-1112, 2002, https://doi.org/10.4271/2002-01-1112. Download Citation
Sangjin Hong, Dennis N. Assanis, Margaret Wooldridge
Walter E. Lay Automotive Laboratory, The University of Michigan
SAE 2002 World Congress & Exhibition
Modeling of SI Engines and Multi-Dimensional Engine Modeling-SP-1702