Du är här

A Physical Two-Zone NOx Model Intended for Embedded Implementation

Författare:
Publiceringsår: 2009
Språk: Engelska
Sidor: 11
Dokumenttyp: Konferensbidrag
Förlag: SAE; Warrendale, PA

Sammanfattning

This paper offers a two-zone NOx model suitable for vehicle on-board, on-line implementation.
Similar NOx modeling attempts have previously been undertaken.
The hereby suggested method does however offer clear and important benefits over the previously methods, utilizing a significantly different method to handle temperature calculations within the (two) different zones avoiding iterative computation.
The new method significantly improves calculation speed and, most important of all, reduces implementation complexity while still maintaining reasonable accuracy and the physical interpretation of earlier suggested methods.
The equations commonly used to compute NOx emissions is also rewritten in order to suit a two-zone NOx model.
An algorithm which can be used to compute NOx emissions is presented and the intended contribution of the paper is a NOx model, implementation feasible for an embedded system, e.g. embedded processor or embedded electronic hardware (FPGA).
For that purpose parts of the algorithm can be pre-computed and stored in tables allowing significant acceleration of the computation.

Disputation

Nyckelord

  • Technology and Engineering
  • NOx
  • Embedded system
  • Model
  • Engine
  • FPGA
  • NO

Övriga

SAE World Congress 2009
2009-04-20
Detroit, MI, USA
Published
Yes
  • SAE 2009-01-1509

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

 

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen