Patent ID: 6814047
Filing Date: 2004-11-09
Classification: F02D,F02P

Abstract:
An ignition method for an internal combustion engine, comprising:performing an injection alternatively one of in at least one first operating mode and in a second operating mode; providing a control-pulse curve that is characteristic of a current operating mode; loading an ignition coil with energy as a function of a primary current by a control logic element in response to the control-pulse curve; and using corresponding, different time characteristics of the primary current to produce ignition sparks, released by the ignition coil at a spark plug, differently for the at least one first operating mode and the second operating mode; wherein: the at least one first operating mode is a homogeneous, normal operation that is subdivided into submodes of a stoichiometric, normal operation and a sub-stoichiometric, normal operation and the second operating mode is an inhomogeneous, stratified-charge operation, the loading of the ignition coil during the inhomogeneous, stratified-charge operation is performed as a pulse-train ignition, using the primary current, and the loading of the ignition coil during the homogeneous, normal operation is performed as a single-pulse ignition with an increase in the primary current.