The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2001
Filed:
Sep. 28, 1998
Wilfried Kleczka, Regensburg, DE;
Stefan Krebs, Regensburg, DE;
Siemens Aktiengesellschaft, Munich, DE;
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,) 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,) which is applicable to all cylinders (z), and a shift value (ZW,(z)) for each cylinder. These are stored in a non-volatile manner.