Gasoline engine simulations using zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics engine model
| Autor: | Michal Pasternak, Andreas Benz, Marc Sens, Karl Georg Stapf, Michael Riess, Fabian Mauss |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
business.industry 020209 energy Mechanical Engineering Homogeneous charge compression ignition Aerospace Engineering Ocean Engineering 02 engineering and technology Mechanics Computational fluid dynamics Combustion Automotive engineering law.invention Ignition system law Automotive Engineering Turbulence kinetic energy Spark (mathematics) 0202 electrical engineering electronic engineering information engineering Physics::Chemical Physics business Spark plug Petrol engine |
| Zdroj: | International Journal of Engine Research. 17:76-85 |
| ISSN: | 2041-3149 1468-0874 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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