Method and control unit for operating a valve

US8955495B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Joos · Walheim, DE
• Jens Neuberg · Stuttgart, DE
• Traugott Degler · Ditzingen, DE
• Helerson Kemmer · Oberaichen, DE
• Hans-Peter Lehr · Stuttgart, DE
• Holger Rapp · Hemmingen, DE
• Haris Hamedovic · Heubach, DE
• Bernd Wichert · Weingarten, DE
• Anh-Tuan Hoang · Plymouth, US
• Ruben Schlueter · Yokohama, JP
• Joerg Koenig · Stuttgart, DE
• Achim Hirchenhein · Trier, DE

Key dates

• Filing date: Dec 2, 2010
• Grant date: Feb 17, 2015
• Expiry date: Oct 21, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/2055
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating a valve, in particular a fuel injector of an internal combustion engine of a motor vehicle, in which an auxiliary variable is obtained as a function of at least one electrical operating variable of an electromagnetic actuator driving a component of the valve, in particular a valve needle, and in which the auxiliary variable is checked for the presence of a predefinable characteristic. A reference variable which characterizes the operating behavior of the electromagnetic actuator is ascertained, the auxiliary variable is modified as a function of the reference variable to obtain a modified auxiliary variable, and the modified auxiliary variable is checked for the presence of the predefinable characteristic.