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:
Jan. 17, 2012
Filed:
Jan. 25, 2007
Taro Aoyama, Susono, JP;
Mikio Inoue, Susono, JP;
Taro Aoyama, Susono, JP;
Mikio Inoue, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
The exhaust purification system for an internal combustion engine according to the present invention includes fuel supply means for supplying fuel to the NOx storage-reduction catalyst from the upstream side thereof, and SOx poisoning recovery control executing means that uses the fuel supply means to supply fuel to the NOx storage-reduction catalyst thereby executing the SOx poisoning recovery control at a predetermined interval during operation of the internal combustion engine. In addition, according to the present invention, the execution of the SOx poisoning recovery control by the SOx poisoning recovery control executing means is prohibited during a predetermined period DELTA Qfenstarting from a point in time that the operation of the internal combustion engine is initially started. The predetermined period DELTA Qfenis longer than a predetermined interval DELTA Qfen