This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
ROHR Simulation for DI Diesel Engines Based on Sequential Combustion Mechanisms
Technical Paper
2006-01-0654
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In this paper a zero-dimensional simulation methodology for efficient pre-optimization of the combustion process in DI diesel engines is presented. A new model for the calculation of the rate of heat release is unveiled. It is based on the separate description of both the primary processes closely related to the fuel jet as well as the following combustion of the fuel mass remaining after the end of injection.
The modeling of fuel mass distribution between premixed and diffusion combustion as well as a model for the fuel preparation time are explained. Furthermore, models for the calculation of ignition delay and premixed combustion based on an extended Arrhenius formulation are discussed, as well as turbulent combustion on the basis of a Magnussen model.
The new features of the heat release model prove to be necessary to describe the effects of modern high-pressure fuel injection systems on the combustion process regarding the strong influence of the injection rate on the burn rate.
Recommended Content
Authors
Topic
Citation
Pirker, G., Chmela, F., and Wimmer, A., "ROHR Simulation for DI Diesel Engines Based on Sequential Combustion Mechanisms," SAE Technical Paper 2006-01-0654, 2006, https://doi.org/10.4271/2006-01-0654.Also In
References
- Chmela, F.G. Orthaber, G.C. Rate of Heat Release Prediction for Direct Injection Diesel Engines Based on Purely Mixing Controlled Combustion SAE Paper 1999-01-0186 1999
- Chmela, F. Engelmayer, M. Pirker, G. Wimmer, A. Prediction of turbulence controlled combustion in diesel engines Conference on thermo- and fluid dynamic processes in diesel engines (THIESEL) Valencia 2004
- Chmela, F. Engelmayer, M. Beran, R. Ludu, A. Prediction of Heat Release Rate and NOx Emission for Large Open Chamber Gas Engines with Spark Ignition 3 rd Dessau Gas Engine Conference 2003
- Dec, John E. A Conceptual Model of DI Diesel Combustion Based on Laser-Sheet Imaging SAE Paper 970873 1997
- García Oliver, J.M. Aportaciones al estudio del proceso de combustión turbulenta de chorros en motores diesel de inyección directa Universidad Politécnica de Valencia 2004
- López Sánchez, J.J. Estudio teórico-experimental del chorro libre diesel no evaporativo y de su interacción con el movimiento del aire Universidad Politécnica de Valencia 2003
- Magnussen, B. F. Hjertager, B. H. On Mathematical Modeling of Turbulent Combustion with Special Emphasis on Soot Formation and Combustion 16th International Symposium on Combustion 1976