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:
Nov. 08, 2011
Filed:
Jul. 14, 2009
Koichiro Harada, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
Disclosed is a particulate filter regenerating system which comprises a fuel injection device () adapted to inject fuel into a combustion chamber of an engine body (), and an exhaust gas temperature-adjusting device () adapted, when a PM deposit amount which is an amount of particulate matter (PM) deposited in a DPF (particulate filter)provided in an exhaust passage of an engine, reaches a predetermined value X, to cause the fuel injection device () to perform a post-injection for injecting fuel into the combustion chamber during an expansion stroke of the engine, so as to execute a filter regeneration process of raising a temperature of exhaust gas flowing into the DPFto burn the deposited PM. The exhaust gas temperature-adjusting device () is operable to cause the fuel injection device () to stop performing the post-injection in a stage where a PM burning amount which is an amount of PM burned through the filter regeneration process, is less than an initial PM deposit amount which is the PM deposit amount X at a timing of initiation of the filter regeneration process, by a predetermined amount. The particulate filter regenerating system of the present invention can adequately burn and remove PM deposited in a particulate filter, by means of a post-injection of fuel, while effectively suppressing a fuel consumption due to the post-injection.