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. 30, 2007
Filed:
Nov. 05, 2003
Makoto Ohtake, Yokohama, JP;
Jun-ichi Kawashima, Yokosuka, JP;
Naoya Tsutsumoto, Yokohama, JP;
Terunori Kondo, Yokohama, JP;
Takao Inoue, Yokohama, JP;
Toshimasa Koga, Yokohama, JP;
Makoto Ohtake, Yokohama, JP;
Jun-ichi Kawashima, Yokosuka, JP;
Naoya Tsutsumoto, Yokohama, JP;
Terunori Kondo, Yokohama, JP;
Takao Inoue, Yokohama, JP;
Toshimasa Koga, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A particulate filter regenerating device is configured to regenerate a particulate filter that collects particulate from engine exhaust gas. The particulate filter regenerating device is configured to prevent the temperature of the particulate filter from exceeding an allowable temperature during regeneration when the quantity of accumulated particulate is estimated to be lower than it actually is due to variation of the estimate. When the amount of temperature rise per unit time of the particulate filter is larger than a prescribed value during regeneration, it is determined that the temperature of the particulate filter will soon exceed the allowable temperature and the temperature rise amount ΔTexh of the exhaust gas is reduced (ΔTexhis the normal temperature rise amount). The larger the temperature rise per unit time is, the more the temperature rise amount of the exhaust gas is reduced.