Operating method for a direct-injection gasoline engine with low-NOx combustion (NAV)

摘要

Operating method for a direct-injection gasoline engine with exhaust gas recirculation, whereby a lean fuel / exhaust gas / air mixture is ignited by compression ignition in a map area with low to medium speed and / or low to medium load and burns in a room ignition combustion (RZV), characterized in that Another map area is connected to the map area with compression ignition at higher load, in which a homogeneous, lean fuel / exhaust gas / air mixture with a combustion air ratio of λ≥1 in a respective combustion chamber of the internal combustion engine is spark-ignited by means of an ignition device at an ignition point (ZZP) and in which a flame front combustion (FFV) started by spark ignition transitions to room ignition combustion (RZV) and at the time of ignition (ZZP) there is a charge dilution of 0.030 to 0.05 mass fuel / total mass combustion chamber content.