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. 06, 2016
Filed:
Aug. 29, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Toshio Nishimura, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A fuel injection controller is provided with a detection control portion which detects a valve-opening time. The detection control portion supplies the low valve-opening voltage to the fuel injector from a low voltage supply. An electric current flowing through a coil is gradually increased. When the fuel injector is fully opened, an inflection point appears on a waveform of an electric current. A valve-open detecting portion detects the inflection point and identifies a valve-opening time. A correction-amount computing portion computes a correction amount of a fuel injection quantity due to an error of the valve-opening time. In a succeeding fuel injection, the correction portion corrects an electric supply period. As a result, the error of the fuel injection quantity due to an error of valve-opening time is corrected.