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. 09, 2007
Filed:
Jun. 15, 2004
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Oobu, JP;
Kazuharu Tochikawa, Kariya, JP;
Kojiro Tokuda, Toki, JP;
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Oobu, JP;
Kazuharu Tochikawa, Kariya, JP;
Kojiro Tokuda, Toki, JP;
Denso Corporation, , JP;
Abstract
To prevent the deterioration of catalyst or the damage of a particulate filter caused by the rapid temperature rise of the particulate filter when the abrupt deceleration of an engine occurs, and avoid the deterioration of fuel consumption by depositing a large PM in the particulate filter and regenerating the same at once. A heat-absorbing areais provided by forming a deeply clogged structure at the exhaust gas flowing-out side end of the particular filterdisposed in an exhaust pipeof an internal combustion engine E. As the heat-absorbing area has a heat capacity larger than that in the other portions, the combustion heat is absorbed and dispersed even if the rapid chain reaction of PM combustion occurs, whereby it is possible to suppress the temperature rise of the downstream portion of the particulate filter liable to be high in temperature.