An Analytical Approach for the Optimization of a SI Engine Performance Including the Consideration of Knock

Paper #:
  • 981463

Published:
  • 1998-05-04
Citation:
Attar, A. and Karim, G., "An Analytical Approach for the Optimization of a SI Engine Performance Including the Consideration of Knock," SAE Technical Paper 981463, 1998, https://doi.org/10.4271/981463.
Pages:
14
Abstract:
The present contribution describes an analytical approach for predicting the highest limit for acceptable power or efficiency for any spark ignition engine while ensuring knock free operation. A deterministic gradient based model combined with a simple genetic algorithm were used in association with a two-zone engine combustion model to predict analytically the necessary changes in specified operating parameters to produce optimum performance. Various examples involving mainly spark ignition engine operation with methane-hydrogen fuel mixtures are presented and discussed.
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