Method for controlling an internal combustion engine

US6619262B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Johann Graf · Eschborn, DE
• Michael Henn · Lehre, DE
• Gerhard Schopp · Nittendorf, DE

Key dates

• Filing date: Apr 1, 2002
• Grant date: Sep 16, 2003
• Expiry date: Apr 1, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/1015
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine having cylinders with injection valves and air mass-setting actuators, an air/fuel ratio sensor detecting the ratio in the individual cylinders, and a sensor detecting a torque generated in the individual cylinders or differences in the torques generated in the cylinders includes individually determining the air/fuel ratio for each cylinder, individually correcting an activation of the fuel injection valve for each cylinder as a function of the detected air/fuel ratio and of a desired value of the air/fuel ratio, determining the variable characterizing the torque or the differences in the torque for each cylinder, individually correcting an activation of the air mass-setting actuator for each cylinder as a function of the detected value of the variable characterizing the torque or of the variable characterizing the difference in the torque specifically with the effect of assimilating the torques generated by the individual cylinders.