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:
Dec. 05, 2006
Filed:
Sep. 09, 2005
Ken Uchiyama, Toyoake, JP;
Ken Uchiyama, Toyoake, JP;
Denso Corporation, Kariya, JP;
Abstract
A control unit for controlling fuel pressure in a common rail comprises a pressure sensor for detecting fuel pressure in the common rail, a decreased amount presuming means for calculating a presumed decreased amount (PC) of the common rail fuel pressure, and a first determination means for comparing the detected decreased amount (PC) of the common rail fuel pressure with the presumed decreased amount (PC), in order to determine whether any abnormal condition is in the outputs from the pressure sensor. Therefore, the malfunction of the pressure sensor or any abnormal conditions included in the outputs from the pressure sensor can be detected even during the engine operation.