Method for controlling an internal combustion engine

US6820588B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Werner Happenhofer · Wackersdorf, DE
• Hong Zhang · Tegernheim, DE

Key dates

• Filing date: Jun 26, 2003
• Grant date: Nov 23, 2004
• Expiry date: Jun 26, 2023

Classification

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

Abstract

The invention relates to a method for controlling an internal combustion engine with a fuel injection system which can comprise, in addition to a main injection quantity, an additional amount of pre-injected and/or post-injected fuel for each injection pulse for each combustion chamber for each combustion cycle at a given injection time. A theoretical torque is determined from an accelerator pedal value, rotational speed and air or fuel mass flow while taking into account a factor from a family of characteristics. According to the invention, the calculated theoretical torque is corrected in the case of a pre-injected or post-injected fuel mass flow by taking into account, in a correction factor, a value for a time or phase difference of the amount of pre-injected or post-injected fuel and the main injection quantity for each cycle.