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:
Apr. 27, 2004
Filed:
Jun. 13, 2001
Toshiaki Sakaguchi, Fujisawa, JP;
Isuzu Motors LTD., Tokyo, JP;
Abstract
In a diesel particulate filtering device A, B which is provided with a diesel particulate filter units for cleaning exhaust gas, and in which cleaning of the exhaust gas and the recovery thereof are performed, diesel particulate filter controllers for determining a recovery time based on detected values PI, PO0, PO1, PO2 of exhaust pressure sensors to in an upstream side of said diesel particulate filter units and a downstream side thereof are provided with determination-value update means resetting determination values R0, R1, R2 for determining a recovery time by comparing the detected values, PO0, PO1, PO2 with a standard exhaust pressure value P0. According to this constitution, the determination values R0, R1, R2 for determining the recovery time can be corrected simply by using determination-value update means without changing contents of a control program when mounting it on a motor vehicle and coping with variations in output of the pressure sensors to due to time aging and so forth.