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:
Oct. 04, 2005
Filed:
Nov. 28, 2003
Tsukasa Kuboshima, Okazaki, JP;
Masumi Kinugawa, Okazaki, JP;
Kiyonori Sekiguchi, Okazaki, JP;
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Obu, JP;
Tsukasa Kuboshima, Okazaki, JP;
Masumi Kinugawa, Okazaki, JP;
Kiyonori Sekiguchi, Okazaki, JP;
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
An electronic control unit (an ECU) detects an operating condition of an engine and quantity of particulate matters accumulated in a diesel particulate filter (a DPF) having an oxidation catalyst from a pressure difference across the DPF. The ECU operates temperature increasing means for regenerating the DPF based on the above detection results. During a low speed and light load operation, the ECU does not perform temperature increasing operation similar to an operation performed during a middle load operation. Instead, the ECU performs operation such as reduction of recirculated exhaust gas quantity in order to inhibit an increase in the quantity of the accumulated particulate matters. When the operating condition is changed afterward, the temperature increasing means is operated, so safe regeneration of the DPF is achieved.