Method and device for controlling a quantity control valve

US9714632B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Matthias Maess · Eppelheim, DE
• Joerg Kuempel · Stuttgart, DE
• Rainer Wilms · Markgröningen, DE
• Uwe Richter · Jena, DE

Key dates

• Filing date: Mar 12, 2014
• Grant date: Jul 25, 2017
• Expiry date: Mar 12, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2700/0282
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a fuel system of an internal combustion engine, fuel is delivered by a high-pressure pump into a fuel rail. The quantity of the delivered fuel is influenced by a quantity control valve (30) actuated by an electromagnetic actuating device. A limit-value retaining current is ascertained, at which the quantity control valve still remains in its closed state or is just opening.