Method for the lambda and torque control of an internal combustion engine and program algorithm

US7669579B2 · kind B2 · utility

Assignee

• VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

• Thomas Lang · Schwäbisch Hall, DE
• Joerg Larink · Haren (Ems), DE

Key dates

• Filing date: May 4, 2007
• Grant date: Mar 2, 2010
• Expiry date: May 4, 2027

Classification

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

Abstract

In a method for controlling the air ratio lambda and for controlling the torque of an internal combustion engine, e.g. of a diesel engine, a fuel is supplied in at least two injection processes, including a main injection of a main injection quantity and a post-injection of a post-injection quantity, and the main injection quantity is influenced to control the torque and the post-injection quantity is influenced to control the lambda value. A corrective main injection quantity ascertained for the torque control is at least proportionally subtracted from the post-injection quantity.