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:
Jun. 14, 2022
Filed:
Oct. 11, 2019
Hitachi Astemo, Ltd., Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
An object of the present invention is to promote the stabilization of the fuel injection amount in a fuel injection device in which a valve body and a movable iron core are configured to be relatively displaceable. In a control unitof a fuel injection devicewhich includes a control part that controls the energization time of a current flowing through a coilbased on the pulse width of a drive command pulse, the control part is configured to be able to execute control to split a required fuel injection amount for one combustion cycle into portions and inject the portions in a plurality of times. In addition, in injections including a sequence of a preceding drive command pulse Piand a subsequent drive command pulse Pi, the control part acquires a preceding drive command pulse width Tiof the preceding drive command pulse Piand a pulse interval Tint that is the time between the end time teof the preceding drive command pulse Piand the start time tsof the subsequent drive command pulse Pi, and corrects the subsequent drive command pulse width Tiof the subsequent drive command pulse Piby using the preceding drive command pulse width Tiand the pulse interval Tint.