Method, computer program, memory medium and control and/or regulating unit for operating an internal combustion engine, as well as internal combustion engine, in particular for a motor vehicle

US6986339B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Joos · Walheim, DE
• Thomas Frenz · Nördlingen, DE
• Bernd Kudicke · Brackenheim, DE
• Claus Schneider · Burgsinn, DE
• Markus Amler · Rutesheim, DE
• Tobias Flaemig-Vetter · Eßlingen, DE
• Uwe Schaupp · Wernau, DE

Key dates

• Filing date: Mar 12, 2004
• Grant date: Jan 17, 2006
• Expiry date: Mar 12, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Method for operating an internal combustion engine in which fuel is injected into a combustion chamber by an injector. The injector has a drivable piezo-actuator. A setpoint value is generated for driving the piezo-actuator. A setpoint charge quantity (QCsetpoint) is determined from the setpoint value, and an actual charge quantity (QCactual) supplied to the piezo-actuator is determined. The setpoint charge quantity (QCsetpoint) and the actual charge quantity (QCactual) are combined, and the combined result (Son) acts upon the drive circuit of the piezo-actuator.