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. 12, 2022
Filed:
Oct. 31, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Eiichiro Ohata, Ibaraki, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
Provided is a fuel injection control device that controls a fuel injection amount at higher accuracy. The fuel injection control device includes: a base waveform acquisition sectionthat generates a control current Sfor controlling a fuel injector; an A/D converterthat acquires a drive current P for the fuel injector(controlled based on the control current S) at each of measurement timings tto tbased on a counter cycle; and an arithmetic operation sectionthat, based on a drive current Pat a first measurement timing tand a drive current Pat a second measurement timing tlater than the first measurement timing t, both acquired by the base waveform acquisition section, predicts a drive current Pat a third measurement timing tlater than the second measurement timing. With this configuration, the arithmetic operation sectionmakes a comparison between a predicted electric power amount calculated based on the drive current Pat the third measurement timing tthat the arithmetic operation sectionhas predicted and a target electric power amount calculated based on a control current predetermined, so as to correct the control current S