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. 14, 2006
Filed:
Dec. 06, 2004
Naoya Tsutsumoto, Yokohama, JP;
Junichi Kawashima, Yokosuka, JP;
Makoto Otake, Yokohama, JP;
Terunori Kondou, Yokohama, JP;
Takao Inoue, Yokohama, JP;
Shouichirou Ueno, Yokohama, JP;
Toshimasa Koga, Yokohama, JP;
Naoya Tsutsumoto, Yokohama, JP;
Junichi Kawashima, Yokosuka, JP;
Makoto Otake, Yokohama, JP;
Terunori Kondou, Yokohama, JP;
Takao Inoue, Yokohama, JP;
Shouichirou Ueno, Yokohama, JP;
Toshimasa Koga, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A diesel particulate filter () traps particulate matter contained in the exhaust gas of a diesel engine () for a vehicle. The filter () is regenerated by raising the exhaust gas temperature so that the trapped particulate matter burns. A controller () calculates a particulate matter combustion amount PMr during regeneration, and in accordance with increases in the combustion amount PMr, raises the oxygen concentration of the exhaust gas by operating an intake throttle () and/or a variable nozzle () of a turbocharger (). As a result, the filter () is held at an optimum temperature for regeneration regardless of the residual particulate matter amount, and hence the time required for regeneration can be shortened without damaging the heat resistance performance of the filter ().