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:
Aug. 22, 2023
Filed:
Mar. 11, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
Appropriate detection of an abnormality of voltage information, which is a basis for correcting a fuel injection amount, becomes possible. For this reason, a fuel injection control device, which has a drive ICcontrolling a fuel injection drive unitto supply a high voltage to a solenoidso as to open a fuel injection valveand controlling the fuel injection drive unitto supply a low voltage to the solenoidso as to hold a valve-open state of the fuel injection valve, includes: a drive voltage input unitthat measures and outputs voltage information based on an upstream voltage of the solenoidof the fuel injection valveand a downstream voltage of the solenoid; a fuel injection amount correction unitthat corrects a fuel injection amount of the fuel injection valvebased on the voltage information output from the drive voltage input unit; and a voltage input function abnormality detection unitthat detects whether an output of the drive voltage input unitis abnormal based on the voltage information output from the drive voltage input unit