Patent Number: 6,167,868

Title: Method for determining ignition angles for individual cylinders in a multicylinder internal combustion engine

Abstract: A method for determining ignition angles for individual cylinders in a multicylinder internal combustion engine forms the ignition angles for the individual cylinders, based on values of a basic family of characteristics (KF.sub.B) which applies to all cylinders, as a function of a knocking behavior of the internal combustion engine on the basis of a first (fast) and second (slow) adaptation loop. Once the internal combustion engine has been stopped, the values that are present are used in a third adaptation loop to form a family of characteristics (KF.sub.3) which is applicable to all cylinders (z), and a shift value (ZW.sub.3 (z)) for each cylinder. These are stored in a non-volatile manner.

Inventors: Kleczka; Wilfried (Regensburg, DE), Krebs; Stefan (Regensburg, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: F02P 5/152 (20060101); F02P 005/00 ()

Expiration Date: 01/02/2018