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:
Feb. 27, 2007
Filed:
Jan. 20, 2004
Armin Dolker, Immenstaad, DE;
Franz Butscher, Friedrichshafen, DE;
Armin Dolker, Immenstaad, DE;
Franz Butscher, Friedrichshafen, DE;
MTU Friedrichshafen GmbH, Friedrichshafen, DE;
Abstract
A method for closed-loop speed control of an internal combustion engine that is provided as a generator drive or a marine propulsion unit, including the steps of: computing a first control deviation (dR) from a speed variance comparison; computing a first set injection quantity (qV) from the first control deviation (dR) by a speed controller; determining a second set injection quantity (qV) from the first set injection quantity (qV) and another input variable (E) by a minimum value selector for the closed-loop speed control of the internal combustion engine, wherein in a first, steady operating state of the internal combustion engine, the input variable (E) corresponds to a first injection quantity (qV) (E=qV), which is computed via a first characteristic curve, and in a second, dynamic operating state of the internal combustion engine, the input variable (E) corresponds to a second injection quantity (qV) (E=qV), which is computed via a second characteristic curve; and changing from the first characteristic curve to the second characteristic curve when a changeover condition is satisfied.