 |
 |
Chapitre d'ouvrage
Control-oriented input-delay model of the distributed temperature of a SI engine exhaust catalyst
Abstract : This chapter aims at showing how a particular class of input delay ordinary differential equations, in which the time- and input-dependent delay is defined through an implicit integral equation, can be used to model accurately the internal temperature of a Spark-Ignited engine catalyst. The modeling approach is grounded on a one-dimensional distributed parameter model, which is approximated by a time-varying first-order delay system whose dynamics parameters (time constant, delay, gains) are obtained through a simple analytic reduction procedure. Following recent works, the distributed heat generation resulting from pollutant conversion is shown here to be equivalent to an inlet temperature entering the system at a virtual front inside the catalyst. The gain of this new input introduces a coupling to ac- count for the conversion efficiency. Relevance of this real-time compliant model is qualitatively supported by experimental data.
https://hal-mines-paristech.archives-ouvertes.fr/hal-01085245
Contributeur : François Chaplais <>
Soumis le : vendredi 21 novembre 2014 - 03:10:10
Dernière modification le : samedi 19 septembre 2020 - 04:30:41
Contributeur : François Chaplais <>
Soumis le : vendredi 21 novembre 2014 - 03:10:10
Dernière modification le : samedi 19 septembre 2020 - 04:30:41