The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2001
Filed:
Sep. 07, 2000
Luca Poggio, Spinetta, IT;
Daniele Ceccarini, Rimini, IT;
Matteo De Cesare, Torremaggiore, IT;
Ciro Barberio, Zola Predosa, IT;
Alessandro Verdecchia, Bologna, IT;
Magneti Marelli S.p.A, Milan, IT;
Abstract
A self-adapting control method for an exhaust system for internal combustion engines with controlled ignition, including an engine, a pre-catalyst, a trap for the collection of nitrogen oxides having a maximum initial capacity and a maximum available capacity not greater than this maximum initial capacity and a linear oxygen sensor disposed downstream of the trap for the collection of nitrogen oxides and generating at least a downstream composition signal substantially proportional to a downstream oxygen titer. The method comprises the stages of carrying out at least one regeneration process and carrying out at least one desulphurisation process of the trap for the collection of nitrogen oxides and also the stage of estimating, at least after each regeneration process, the maximum available capacity as a function of the maximum initial capacity and the downstream composition signal.