Patent · US Active

Method and control unit for operating an injection valve

US8584515B2 · kind B2 · utility

2Cited by

5References

22Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Fischer · Eppelheim, DE
Silke Seuling · Kornwestheim, DE
Christian Grosse · Kornwestheim, DE
Helerson Kemmer · Oberaichen, DE
Werner Haeming · Neudenau, DE

Key dates

Filing date	Oct 1, 2009
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Sep 19, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01F7/1844
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for operating an injection valve, in particular a fuel injector of an internal combustion engine of a motor vehicle, one component of the injection valve, particularly a valve needle, is disposed in a manner allowing movement relative to other components of the injection valve, and preferably is able to be driven at least partially by an actuator. A structure-borne-noise signal is detected by a structure-borne-noise sensor, and the structure-borne-noise signal is evaluated in order to infer an operating state of the movably disposed component.

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