Patent · US Active

Actuator for a piezo actuator of an injection valve

US11352972B2 · kind B2 · utility

0Cited by

6References

6Claims

0Family size

Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Michael D. Katzenberger · Florissant, US
Michael Kausche · Regensburg, DE
Manfred Kramel · Mintraching, DE

Key dates

Filing date	Jul 12, 2017
Grant date	Jun 7, 2022
Priority date	—
Expiry date	May 4, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/2068
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Various embodiments include a method for actuating a piezo actuator of an injection valve of a fuel injection system comprising: determining actuation signals for the piezo actuator using a stored current/voltage characteristic curve for carrying out an injection process; detecting the profile of the current flowing through the piezo actuator during the injection process and the profile of the voltage applied to the piezo actuator during the injection process; adapting the stored current/voltage characteristic curve based at least in part on the detected current profile and the detected voltage profile; and determining actuation signals for the piezo actuator using the stored, adapted current/voltage characteristic curve for carrying out a subsequent injection process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.