Patent ID: 7182064
Filing Date: 2007-02-27
Classification: F02D,Y02T

Abstract:
1. A method for closed-loop speed control of an internal combustion engine that is provided as a generator drive or a marine propulsion unit, comprising the steps of: computing a first control deviation (dR 1 ) from a speed variance comparison; computing a first set injection quantity (qV 0 ) from the first control deviation (dR 1 ) by a speed controller; determining a second set injection quantity (qV) from the first set injection quantity (qV 0 ) 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 1 ) (E=qV 1 ), 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 2 ) (E=qV 2 ), 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.