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. 06, 2012
Filed:
Jul. 17, 2008
Hidenobu Tsukada, Ushiku, JP;
Kazunori Nakamura, Tsuchiura, JP;
Shohei Kamiya, Kasumigaura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
Each time a starting process for a diesel engineis conducted and before the diesel engineis started, any differences of the pressures Pand Pdetected by first and second pressure sensorsand, respectively, with respect to a predetermined reference pressure value Pref, are computed and stored as first and second correction values ΔPand ΔP, and then a differential pressure Pacross a particulate filter in the diesel engineis computed using the pressure detection results of the first and second pressure sensorsand the first and second correction values ΔP, ΔP. Thus, use of simply constructed and highly durable sensors during the detection of the differential pressure existing across the filter allows accurate measurement of this differential pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile