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:
Jul. 29, 2014
Filed:
Aug. 17, 2011
Masakazu Sakata, Obu, JP;
Masakazu Sakata, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
A controller for a pressure reducing valve is applied to a fuel injection system which is provided with a pressure reducing valve in a common-rail and a fuel pressure sensor detecting a fuel pressure in a fuel supply passage from the accumulator to an injection port of the fuel injector. The controller includes a fuel-pressure-variation detector for detecting a fuel pressure variation timing at which a detection value of the fuel pressure sensor is varied due to an opening operation or a closing operation of the pressure reducing valve. The controller further includes a response-delay-time computing portion for computing a response delay time of the pressure reducing valve based on a command timing and a fuel pressure variation timing.