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. 16, 2024
Filed:
Nov. 04, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Fumihiro Itaba, Hitachinaka, JP;
Osamu Mukaihara, Hitachinaka, JP;
Takao Miyake, Hitachinaka, JP;
Takuya Watai, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
An injection amount variation of a plurality of fuel injection valves is reduced regardless of a state of an engine. According to one aspect of the present invention, there is provided a fuel injection control devicethat controls a plurality of fuel injection valves having a coil for energization, including a valve body operation time detection unitthat detects a valve closing completion time from an end of energization of the fuel injection valve to completion of valve closing of a valve body of the fuel injection valve, a drive current correction unitthat corrects a drive current parameter of the fuel injection valve based on the valve closing completion time, an injection pulse width correction unitthat corrects an energization time of the fuel injection valve based on the valve closing completion time, and a correction method selection unitthat selects at least one of the drive current correction unitand the injection pulse width correction unitto execute correction based on a state of an engine.