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:
Sep. 28, 2010
Filed:
Dec. 15, 2004
Jörg Beilharz, Berlin, DE;
Maximillian Kronberger, Regensburg, DE;
Richard Pirkl, Regensburg, DE;
Sven Rebeschieβ, Kleinmachnow, DE;
Harald Schmidt, Vienna, AT;
Hans-jörg Wiehoff, Regensburg, DE;
Jörg Beilharz, Berlin, DE;
Maximillian Kronberger, Regensburg, DE;
Richard Pirkl, Regensburg, DE;
Sven Rebeschieβ, Kleinmachnow, DE;
Harald Schmidt, Vienna, AT;
Hans-Jörg Wiehoff, Regensburg, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
A valve has a piezo actuator, a valve element, a valve body and a valve seat. At a predeterminable point in time, the valve element is controlled by a discharging process of the piezo actuator from a position in which it rests against the valve seat to a predetermined position located at a distance from the valve seat. The discharging process is divided into a first discharging period during which a predetermined first amount of electrical energy is discharged from the piezo actuator, a subsequent holding time period during which the piezo actuator is not controlled, and a subsequent second discharging period during which a predetermined second amount of electrical energy is discharged. The holding time duration and/or the first discharging period are/is adapted according to the course of a value that is not characteristic of the oscillation behavior of the piezo actuator during the holding time period.