Method and device for checking for leakage in a fuel injection valve of an internal combustion engine

US7937988B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Traugott Degler · Ditzingen, DE
• Lars Empacher · Stuttgart, DE
• Andreas Hempel · Ludwigsburg, DE
• Wolfgang Beuer · Steyr, AT
• Hans Jaeger · Thunstetten, CH
• Myriam Howey · Ditzingen, DE

Key dates

• Filing date: Nov 10, 2005
• Grant date: May 10, 2011
• Expiry date: Mar 13, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/0606
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a method and a device for testing for leakage in a fuel injection valve of an internal combustion engine, a temperature quantity is determined that characterizes the temperature of at least a part of the fuel injection valve. On the basis of this temperature quantity, the presence of a leak is inferred.