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. 31, 2012
Filed:
Apr. 30, 2008
Hiroshi Otsuki, Susono, JP;
Takamitsu Asanuma, Mishima, JP;
Kohei Yoshida, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Shinya Hirota, Susono, JP;
Kotaro Hayashi, Mishima, JP;
Hiroshi Otsuki, Susono, JP;
Takamitsu Asanuma, Mishima, JP;
Kohei Yoshida, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Shinya Hirota, Susono, JP;
Kotaro Hayashi, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In an internal combustion engine, an SOsensor () having a sensor part () trapping the SOcontained in the exhaust gas and able to detect the amount of SOtrapped at the sensor part () from a change of property of the sensor part () is arranged in the engine exhaust passage upstream of the NOstoring catalyst (). When estimating the amount of SOstored in the NOstoring catalyst () from the amount of SOtrapped at the sensor part (), deviation of the estimated value of the amount of stored SOarising due to the difference between the SOtrapping rate of the sensor part () and the SOtrapping rate of the NOstoring catalyst () is corrected.