An internal combustion engine (1), especially of a motor vehicle, is described, which has a combustion chamber (4) into which fuel can be injected in a rich operating mode and in a lean operating mode. The internal combustion engine (1) is provided with a catalytic converter (12) in which nitrogen oxides...http://www.google.com/patents/US6698189?utm_source=gb-gplus-sharePatent US6698189 - Method for operation of an internal combustion engine
