Engine and Aftertreatment Modeling for Gasoline Direct Injection

Paper #:
  • 982596

Published:
  • 1998-10-19
Citation:
Hepburn, J., Kenney, T., McKenzie, J., Thanasiu, E. et al., "Engine and Aftertreatment Modeling for Gasoline Direct Injection," SAE Technical Paper 982596, 1998, https://doi.org/10.4271/982596.
Pages:
28
Abstract:
Engine and aftertreatment models have been developed in support of gasoline direct injection (GDI) engine development and aftertreatment system design. A brief overview of the engine models that were used to project emissions and fuel economy performance for the GDI engine is presented. Additionally, the construction and validation of a NOx trap aftertreatment model is described in considerable detail. The insights and increased understanding which have been gained regarding the trade-offs between engine out emission targets, aftertreatment performance, and emission constrained fuel economy benefits for direct injection gasoline engines are reviewed and discussed.
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