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. 10, 2013
Filed:
May. 09, 2008
Masanori Yamato, Toyota, JP;
Takeru Yoshida, Toyota, JP;
Nobuyuki Takagi, Toyota, JP;
Toshitaka Tanabe, Aichi-ken, JP;
Yasutaka Nagai, Aichi-ken, JP;
Kazuhiko Dohmae, Nissin, JP;
Naoki Takahashi, Nagoya, JP;
Masanori Yamato, Toyota, JP;
Takeru Yoshida, Toyota, JP;
Nobuyuki Takagi, Toyota, JP;
Toshitaka Tanabe, Aichi-ken, JP;
Yasutaka Nagai, Aichi-ken, JP;
Kazuhiko Dohmae, Nissin, JP;
Naoki Takahashi, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A regeneration apparatus comprises a heaterwhich heats a catalystat the time of stopping fuel supply to an engine, a pumpwhich supplies an oxidizing gas or a reducing gas to the heated catalystand a switching valve. In the oxidizing step, catalytic poisons, for example hydrocarbon, which are absorbed on a noble metal are oxidized and removed. The particles of the noble metal become oxidized particles as pure oxide and the like. After the oxidizing step, the reducing step is carried out. In the reducing step, particles of the noble metal are reduced and re-dispersed on the support simultaneously and as a result, the particles of the noble metal become fine. Thus, a deteriorated catalyst can be regenerated without interrupting the use of catalyst and also without deteriorating the drivability.