Analysis of Thermodynamic Characteristics of Diesel Engine Emission Control Strategies Using a Multi-Zone Combustion Model

Paper #:
  • 2012-01-1340

Published:
  • 2012-04-16
Citation:
Poetsch, C., Ofner, H., and Cartellieri, W., "Analysis of Thermodynamic Characteristics of Diesel Engine Emission Control Strategies Using a Multi-Zone Combustion Model," SAE Int. J. Engines 5(3):1498-1523, 2012, https://doi.org/10.4271/2012-01-1340.
Pages:
26
Abstract:
The paper describes a zero-dimensional crank angle resolved combustion model which was developed for the analysis and prediction of combustion in compression ignition (CI) engines. The model relies on the multi zone combustion model (MZCM) approach of Hiroyasu. The main sub-models were taken from literature and extended with additional features described in this paper.A special procedure described in a previous paper is used to identify the mechanisms of the combustion process on the basis of the measured cylinder pressure trace. Based on the identified mechanisms the present work concentrates on the analysis of the causal effects that predominantly control the combustion process and the formation of NOx and Soot. The focus lies on the changes of the thermodynamic states and the composition of the reaction zones caused by different emission control strategies.Finally this knowledge is applied to predict the characteristics of cycle related data such as thermal efficiency, process temperatures, pressures and combustion emissions as function of changes in engine settings. Based on this data procedures for minimization of fuel consumption and emissions are discussed.
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