Importance

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Abstract

The invention relates to a method for operating an internal combustion engine, wherein the internal combustion engine includes at least one combustion chamber in which a fuel is at least partially burned with ambient air, an exhaust tract that is coupled to an outlet side of the at least one combustion chamber in a fluid communicating manner, wherein hydrogen is used as fuel for the internal combustion engine, wherein the internal combustion engine also has at least one NOx storage catalyst and an exhaust gas discharged from the at least one combustion chamber into the exhaust tract at least partially, preferably entirely, flows through the at least one NOx storage catalyst, wherein a lean hydrogen-air mixture is burned in the at least one combustion chamber in a first operating state, wherein the NOx storage catalyst is regenerated in a second operating state. In order to easily operate the internal combustion engine as a low-emissions system, a rich hydrogen-air mixture is burned in the at least one combustion chamber in the second operating state.

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First Claim