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:
Oct. 22, 2013
Filed:
Jun. 05, 2009
Daiji Nagaoka, Fujisawa, JP;
Teruo Nakada, Fujisawa, JP;
Akihide Oogushi, Fujisawa, JP;
Hiroyuki Yuza, Fujisawa, JP;
Daiji Nagaoka, Fujisawa, JP;
Teruo Nakada, Fujisawa, JP;
Akihide Oogushi, Fujisawa, JP;
Hiroyuki Yuza, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
An exhaust gas purification apparatus including a first exhaust gas treatment member carrying an oxidation catalyst, a three-way catalyst, or a NOx storage reduction catalyst which is used for purifying exhaust gas from an internal combustion engine, a second exhaust gas treatment member having a hydrocarbon ('HC') storing function disposed on the downstream side of the first exhaust gas treatment member, and a heat dissipating unit disposed between the first exhaust gas treatment member and the second exhaust gas treatment member. An upstream side of the heat dissipating unit is formed into a heat insulating structure, and a further upstream side thereof is formed into a heat retaining structure. Even when an internal combustion engine is accelerating, the exhaust gas flowing into the HC adsorption material can be cooled efficiently and HC can be adsorbed before the temperature of the three-way catalyst or the NOx purification catalyst rises to an HC light-off temperature.