Patent ID: 8544448
Filing Date: 2013-10-01
Classification: F02D,F02P,Y02T

Abstract:
1. A method for operating an internal combustion engine, wherein the internal combustion engine comprises a combustion chamber delimited by a piston, wherein the piston drives a crankshaft rotatably supported in a crankcase of the internal combustion engine, wherein the internal combustion engine comprises a device for supplying fuel, an ignition device, and an electronic control unit, wherein a correlation between a power output of the internal combustion engine and a lambda value in the combustion chamber is defined by a power output curve that has a first ascending branch, a maximum, and a second descending branch where the lambda value is smaller than 1; the method comprising: determining a position of an operating point of the internal combustion engine by adjusting an ignition timing of the internal combustion engine to an adjusted ignition timing and evaluating an engine speed reaction of the internal combustion engine caused by the adjusted ignition timing; changing a supplied fuel quantity as a function of the determined position of the operating point when the determined position of the operating point is not a desired operating point.