Method for operating an internal combustion engine and device for the openloop and closed-loop control of an internal combustion engine, injection system, and internal combustion engine

US9909524B2 · kind B2 · utility

Assignee

• MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

• Markus Gölz · Ravensburg, DE
• Robby Gerbeth · Friedrichshafen, DE
• Frank MLICKI · Radolfzell, DE
• Michael Walder · Ravensburg, DE
• Carsten ENGLER · Wolfegg, DE
• Andreas MEHR · Kreßbronn, DE
• Christian Wolf · Arlington, US

Key dates

• Filing date: Aug 21, 2014
• Grant date: Mar 6, 2018
• Expiry date: Aug 21, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating an internal combustion engine having a motor with cylinder and an injection system having a common rail and injectors for the cylinders. Each injector has an accumulator for holding fuel from the common rail. A multiple injection of fuel is performed during each working cycle of a cylinder, including injecting a first amount in a first injection and injecting a second amount in a second injection, and determining fuel pressure for the common rail and/or the accumulator. A fuel injection amount parameter is determined for the first injection; an individual accumulator pressure and/or a common rail pressure is determined for the second injection; and a fuel injection amount parameter is determined for the second injection. The individual accumulator pressure and/or the common rail pressure are/is considered for determining the injection amount parameter of the fuel for the second injection.