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:
Dec. 18, 2001
Filed:
Dec. 22, 2000
Applicant:
Inventors:
Wojciech Cianciara, Grünthal, DE;
Gerhard Fischer, Maxhütte-Deglhof, DE;
Thomas Haug, Straubing, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 5/152 ;
U.S. Cl.
CPC ...
F02P 5/152 ;
Abstract
The total ignition angle ZW(z) of each cylinder z is composed of cylinder-selective values basic ignition angle GZ(z) {determined by engine speed n and load L}, knock adjustment angle KNK(z), in addition to a first adaptation value AD,(z) and a second adaptation value AD,common to all cylinders. AD,(z) is increased when KNK(z) is greater than a threshold DEC and is reduced when KNK(z) is lower than a threshold INC. The second adaptation value AD,is formed as a function of the average value {overscore (AD,+L )} of the adaptation values of all cylinders.