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Modelling of an EGR System

Olin, Fredrik (2007) In MSc Theses
Department of Automatic Control
Abstract
Due to new emission legislations in Europe and in the USA truck manufacturers are facing new difficulties when it comes to meeting these demands. This new legislation will demand more accurate models for simulation and malfunction diagnosis. The NOx emissions, covered in these new laws, are intimately linked to combustion temperatures and these temperatures may be decreased by means of exhaust gas recirculation into the intake air, so called EGR. This thesis deals with alternative EGR mass flow estimation models in a 13-litre Volvo diesel engine equipped with turbo and variable geometry turbine. Using a mean value model and moving average filtered temperature, EGR valve position and pressures as inputs this estimate however, never touches... (More)
Due to new emission legislations in Europe and in the USA truck manufacturers are facing new difficulties when it comes to meeting these demands. This new legislation will demand more accurate models for simulation and malfunction diagnosis. The NOx emissions, covered in these new laws, are intimately linked to combustion temperatures and these temperatures may be decreased by means of exhaust gas recirculation into the intake air, so called EGR. This thesis deals with alternative EGR mass flow estimation models in a 13-litre Volvo diesel engine equipped with turbo and variable geometry turbine. Using a mean value model and moving average filtered temperature, EGR valve position and pressures as inputs this estimate however, never touches the current EGR mass flow estimation in mean and maximum relative errors. Validation is by stationary inputs but dynamic simulations are examined. (Less)
Please use this url to cite or link to this publication:
author
Olin, Fredrik
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
EGR, mean value engine model, and poppet valve.
publication/series
MSc Theses
report number
TFRT-5784
ISSN
0280-5316
language
English
id
8847691
date added to LUP
2016-03-17 13:14:45
date last changed
2016-03-17 13:14:45
@misc{8847691,
  abstract     = {{Due to new emission legislations in Europe and in the USA truck manufacturers are facing new difficulties when it comes to meeting these demands. This new legislation will demand more accurate models for simulation and malfunction diagnosis. The NOx emissions, covered in these new laws, are intimately linked to combustion temperatures and these temperatures may be decreased by means of exhaust gas recirculation into the intake air, so called EGR. This thesis deals with alternative EGR mass flow estimation models in a 13-litre Volvo diesel engine equipped with turbo and variable geometry turbine. Using a mean value model and moving average filtered temperature, EGR valve position and pressures as inputs this estimate however, never touches the current EGR mass flow estimation in mean and maximum relative errors. Validation is by stationary inputs but dynamic simulations are examined.}},
  author       = {{Olin, Fredrik}},
  issn         = {{0280-5316}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{MSc Theses}},
  title        = {{Modelling of an EGR System}},
  year         = {{2007}},
}