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:
Dec. 22, 2009
Filed:
Jun. 06, 2005
Takashi Hirano, Tokyo, JP;
Yasuhiro Sato, Tokyo, JP;
Kazuhiro Nomoto, Tokyo, JP;
Bosch Corporation, Tokyo, JP;
Abstract
In an exhaust gas after-treatment apparatus () including a particulate filter () that receives an exhaust gas having passes through a catalyst converter () and traps particulates in an exhaust, injectors (through) used for a post fuel injection to activate the catalyst converter (), and a filter control unit () that performs post fuel injection control, the filter control unit () includes a determination portion that determines whether a post fuel injection operation should be started, and a calculation portion that calculates an integration value of a fuel injection amount after the post fuel injection operation is started in a case where the post fuel injection operation is started in responding to the determination portion. The post fuel injection operation is stopped when the integration value has reached a specified value. It is thus possible to appropriately perform the post fuel injection control to activate the catalyst converter.