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:
Jan. 14, 2025
Filed:
Jan. 25, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Fumihiro Itaba, Hitachinaka, JP;
Osamu Mukaihara, Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
An object of the present invention is to provide a fuel injection control device capable of improving the execution frequency and accuracy of individual difference detection of a plurality of fuel injection valves. Therefore, the fuel injection control deviceis configured to measure, as a valve closing time, a time from when energization of the solenoidis finished to when the valve bodymoves to the valve closing position for each of the plurality of fuel injection valves; divide an energization time of the solenoidinto a plurality of sectionsto; calculate, as an average valve closing time, an average value of the valve closing times measured a plurality of times, in each of the plurality of sectionsto; calculate a specific valve closing time based on the average valve closing time of at least one section among the plurality of sectionsto; and correct the energization time according to the specific valve closing time of each of the plurality of fuel injection valves