Multi-Zone Models of Combustion and Heat Transfer Processes in SI Engines

Paper #:
  • 2014-01-1067

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-1067
Citation:
Hvezda, J., "Multi-Zone Models of Combustion and Heat Transfer Processes in SI Engines," SAE Technical Paper 2014-01-1067, 2014, https://doi.org/10.4271/2014-01-1067.
Author(s):
Pages:
12
Abstract:
The paper introduces a recently developed toolset to be implemented into the complex simulation codes for internal combustion engines to treat the calculations dealing with a high-pressure part of the thermodynamic cycle in a four-stroke spark ignition engine. This multi-zone simulating tool works on the basis of a simple quasi-dimensional method reflecting the real combustion chamber geometry and uses a specific approach to describe the species chemical transformation during combustion.Here a standard kinetic scheme is combined adaptively with a flexible method for chemical equilibrium in the cases of abnormally fast chemical reactions to improve the numerical performance of the equation system.Real 3-D combustion chamber geometry is taken into account by means of geometrical characteristics created in advance. A newly generalized tool providing these data is presented here.The new code is also able to work in predictive or inverse mode. The selected results regarding these two algorithms are mentioned at the end.
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