Gasoline engine simulations using zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics engine model

A simulation process for spark ignition gasoline engines is proposed. The process is based on a zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics of the cold in-cylinder flow. The cold flow simulations are carried out to analyse changes in the turbulent kinetic energy and its dissipation. From this analysis, the volume-averaged turbulent mixing time can be estimated that is a main input parameter for the spark ignition stochastic reactor model. The spark ignition stochastic reactor model is used to simulate combustion progress and to analyse auto-ignition tendency in the end-gas zone based on the detailed reaction kinetics. The presented engineering process bridges the gap between three-dimensional and zero-dimensional models and is applicable to various engine concepts, such as, port-injected and direct injection engines, with single and multiple spark plug technology. The modelling enables predicting combustion effects and estimating the risk of knock occurrence at different operating points or new engine concepts for which limited experimental data are available.

[1]  G. Woschni.  A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine , 1967 .

[2]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

[3]  Martin Tuner,et al.  A PDF-Based Model for Full Cycle Simulation of Direct Injected Engines , 2008 .

[4]  Harry Lehtiniemi,et al.  Stochastic model for the investigation of the influence of turbulent mixing on engine knock , 2004 .

[5]  S. Pope.  PDF methods for turbulent reactive flows , 1985 .

[6]  Fabian Mauss,et al.  A Monte Carlo Based Turbulent Flame Propagation Model for Predictive SI In-Cylinder Engine Simulations Employing Detailed Chemistry for Accurate Knock Prediction , 2012 .

[7]  T. Tsurushima.  A new skeletal PRF kinetic model for HCCI combustion , 2009 .

[8]  G. Merker,et al.  Combustion Engines Development: Mixture Formation, Combustion, Emissions and Simulation , 2011 .

[9]  Fabian Mauss,et al.  0D/3D Simulations of Combustion in Gasoline Engines Operated with Multiple Spark Plug Technology , 2015 .

[10]  Simon Bjerkborn.  Development and Validation of a Turbulent Flame Propagation Model , 2011 .

[11]  Fabio Bozza,et al.  Hierarchical 1D/3D Approach for the Development of a Turbulent Combustion Model Applied to a VVA Turbocharged Engine. Part I: Turbulence Model , 2014 .

[12]  C. Schwarz,et al.  Combustion Engines Development , 2012 .

[13]  D. Haworth.  Progress in probability density function methods for turbulent reacting flows , 2010 .

[14]  Fabian Mauss,et al.  A computational study of an HCCI engine with direct injection during gas exchange , 2006 .

[15]  F. Mauss,et al.  Aspects of 0D and 3D Modeling of Soot Formation for Diesel Engines , 2014 .

[16]  Gunnar Stiesch,et al.  Modeling Engine Spray and Combustion Processes , 2003 .

[17]  J. M. Mallikarjuna,et al.  EFFECT OF ENGINE SPEED ON IN-CYLINDER TUMBLE FLOWS IN A MOTORED INTERNAL COMBUSTION ENGINE - AN EXPERIMENTAL INVESTIGATION USING PARTICLE IMAGE VELOCIMETRY , 2011 .