Patent · US Active

Method and device for operating an injection valve

US9086028B2 · kind B2 · utility

1Cited by

3References

11Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Anselm Schwarte · Bad Abbach, DE
Peter Matthias Ruße · Tegernheim, DE
Nicolas Nozeran · Regensburg, DE

Key dates

Filing date	Jun 7, 2011
Grant date	Jul 21, 2015
Priority date	—
Expiry date	Jul 30, 2032

Classification

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

Abstract

An injection nozzle has a nozzle needle that suppresses metering of fluid in a closed position and otherwise allows the metering of fluid. Furthermore, the injection valve has a solid-state actuator that acts on the nozzle needle. A first operating phase is performed for a closing operation in a first operating mode, during which first operating phase the solid-state actuator is discharged to a predefined part charge. Furthermore, a second operating phase is performed, during which the solid-state actuator is operated as a sensor. An operating duration of the second operating phase is predefined such that the closed position of the nozzle needle is reached during the operating duration. A third operating phase is performed, during which the solid-state actuator is discharged further to a predefined reference state. In a second operating mode, the first and second operating phases are carried out and the third operating phase is omitted.

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