A Cold-Start Emissions Model of an Engine and Aftertreatment System for Optimisation Studies

Paper #:
  • 2010-01-1274

Published:
  • 2010-04-12
Citation:
Andrianov, D., Keynejad, F., Dingli, R., Voice, G. et al., "A Cold-Start Emissions Model of an Engine and Aftertreatment System for Optimisation Studies," SAE Technical Paper 2010-01-1274, 2010, https://doi.org/10.4271/2010-01-1274.
Pages:
23
Abstract:
The minimisation of tail-pipe emissions and fuel consumption during cold-start can be viewed as a constrained optimisation problem involving many parameters. Examining this problem mathematically first requires an accurate and computationally practical model of the engine and exhaust system. This paper proposes such a model for use during the cold-start of a conventional spark ignition engine. This model uses as much physics-based modelling as is computationally practical for optimisation and control studies. It takes a given set of engine control inputs to simulate tailpipe CO , HC and NO emissions, and is both calibrated and validated using detailed measurements obtained on a transient engine dynamometer following the New European Drive Cycle (NEDC).
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