Method for operating an internal combustion engine, and control or regulating device for an internal combustion engine

US7685992B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ruediger Weiss · Metzingen, DE
• Andreas Schmidt · Braunschweig, DE
• Jean-Marc Tonye Djon · Stuttgart, DE
• Jochen Laubender · Ingolstadt, DE
• Manfred Dietrich · Leverkusen, DE
• Elias Calva · Stuttgart, DE
• Michael Drung · Rochlitz, DE
• Karsten Kroepke · Ludwigsburg, DE

Key dates

• Filing date: Nov 11, 2008
• Grant date: Mar 30, 2010
• Expiry date: Nov 11, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/0411
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a method for operating a direct-injection internal combustion engine, a position of at least one piston inside a cylinder in which the combustion engine is at a standstill is determined; and a starting cylinder into which fuel is injected first is selected for a start following the standstill. An instantaneous charge of the starting cylinder is determined as a function of a duration of the standstill of the combustion engine. A distance (d) between the piston of the starting cylinder and a specified position of the piston is calculated. A minimum distance of the piston of the selected cylinder is determined as a function of the instantaneous charge; and another cylinder is selected as starting cylinder if the distance (d) between the piston of the starting cylinder and the specified position is less than the minimum distance.