Control Oriented Air Path Model for Compressed Air Boosted Diesel Engines

In this paper an air path model is presented for control system design. The model was developed for direct injected, turbocharged and intercooled commercial vehicle diesel engines which are equipped with compressed air booster system (PBS® - Pneumatic Booster System), high pressure exhaust gas recirculation (EGR) with EGR-cooler and exhaust brake (EB). Current and next generation emission standards introduced significant limitations for NOₓ and soot. It is challenging to handle these components, especially at transient engine operations. Nitric oxide formation can be limited with an appropriate amount of exhaust gas recirculation. Soot formation is influenced mainly by the air-fuel ratio of the mixture which can be affected by the intake manifold pressure. Therefore with the targeted design of a suitable air path controller the modeled engine setup is able to handle both the NOₓ and soot formation in transient cases. The reported model is the first step of this work.

Language

  • English

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Filing Info

  • Accession Number: 01554553
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 26 2015 9:53AM