Patent · US Active

Method and device for actuating a piezo actuator of an injection valve of a fuel injection system of an internal combustion engine

US10619583B2 · kind B2 · utility

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0References

4Claims

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Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Nicolas Nozeran · Regensburg, DE
Tany Gargiso · Donaustauf, DE
Hans-Jörg Wiehoff · Regensburg, DE

Key dates

Filing date	Jun 15, 2016
Grant date	Apr 14, 2020
Priority date	—
Expiry date	Nov 11, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method and a device for actuating an injection valve, which has a piezo actuator and a nozzle needle, of a fuel injection system of an internal combustion engine, in which method a control unit, in a manner dependent on a setpoint stroke height of the piezo actuator in successive injection cycles, outputs a control signal for changing the actual stroke height of the piezo actuator, characterized in that the control unit changes the setpoint stroke height of the piezo actuator, for compensation of the temperature dependency of the capacitance of the piezo actuator, in a manner dependent on the temperature of said piezo actuator.

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