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:
Nov. 09, 2021
Filed:
Sep. 18, 2017
Cpt Group Gmbh, Hannover, DE;
Markus Stutika, Regensburg, DE;
Gerd Rösel, Regensburg, DE;
VITESCO TECHNOLOGIES GMBH, Hanover, DE;
Abstract
Various embodiments include a method for operating a fuel injector having a hydraulic stop comprising: applying a first current profile to a solenoid drive to inject a predetermined injection quantity; ascertaining a first value of a parameter correlating to a velocity of the armature when reaching the hydraulic stop; determining whether the first value of the parameter is greater than a first threshold value; and if the first value of the parameter is greater than the first threshold value, applying a second current profile to the solenoid drive to carry out a second injection procedure. The second current profile in comparison with the first current profile exerts a lower magnetic force in the direction of the pole piece on the armature.