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. 01, 2013
Filed:
Jun. 26, 2008
Ataru Ichikawa, Kariya, JP;
Shigeki Daido, Nishio, JP;
Ataru Ichikawa, Kariya, JP;
Shigeki Daido, Nishio, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system, a catalyst has properties of storing NHand further decreasing the critical reaction temperature as an amount of NHstorage at the catalyst is increased. In the addition-amount controller, a present NHstorage amount that is a storage amount of NHof the catalyst is detected at a detection time, the NHstorage amount of the catalyst is changed by controlling an addition amount by an addition valve, and the NHstorage amount of the catalyst is controlled to a target NHstorage amount based on the detected present NHstorage amount.