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Knock modeling: an integrated tool for detailed chemistry and engine cycle simulation

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Author

Summary, in English

For the simultaneous evaluation of the influence on engine knock of both chemical conditions and global operating parameters, a combined tool was developed. Thus, a two-zone kinetic model for SI engine combustion calculation (Ignition) was implemented into an engine cycle simulation commercial code. The combined model predictions are compared with experimental data from a single-cylinder test engine. This shows that the model can accurately predict the knock onset and in-cylinder pressure and temperature for different lambda conditions, with and without EGR. The influence of nitric oxide amount from residual gas in relation with knock is further investigated. The created numerical tool represents a useful support for experimental measurements, reducing the number of tests required to assess the proper engine control strategies.

Publishing year

2003

Language

English

Publication/Series

Spark Ignition and Compression Ignition Engines Modeling

Document type

Conference paper

Topic

  • Energy Engineering

Conference name

SAE Powertrain & Fluid Systems Conference & Exhibition, 2003

Conference date

2003-10-27 - 2003-10-30

Conference place

Pittsburgh, PA, United States

Status

Published

Research group

  • heat transfer

ISBN/ISSN/Other

  • ISBN: 978-0-7680-1321-4