Patent ID: 6536410
Filing Date: 2003-03-25
Classification: F02D,F02P

Abstract:
A synchronized ignition method for an internal combustion engine having a crankshaft sensor and a smooth running detecting device, the method comprising the acts of:after starting the engine, performing an intended ignition at least in one cylinder in all upper dead centers, wherein a shifting of an ignition point in time takes place by a defined value in certain ones of the upper dead centers; detecting, via the smooth running detecting device, an effect of the shifting of the ignition point in time; and if a running smoothness changes above a defined limit value for an upper dead center in which the shifting of the ignition point in time takes place, then assigning that upper dead center as an ignition upper dead center, and if the running smoothness does not change above a defined limit value in the upper dead center in which the shifting of ignition point of time takes place, then assigning the upper dead center in which no shifting of the ignition point in time takes places as the ignition upper dead center.