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:
Apr. 16, 2002
Filed:
May. 29, 2001
Applicant:
Inventors:
Andreas Hartke, München, DE;
Achim Koch, Tegernheim, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 9/04 ; F02D 4/120 ;
U.S. Cl.
CPC ...
F01L 9/04 ; F02D 4/120 ;
Abstract
An estimated value is calculated for a disturbing force which occurs as a result of the gas forces acting on the gas exchange valve immediately prior to the opening of the latter. The time profile of the disturbing force resulting at the gas exchange valve after the commencement of opening is estimated from a response of a transfer member to a jump in the disturbing force from the estimated valve to a predetermined value. An actuating signal for the actuator drive is determined as a function of the time profile of the disturbing force.