Patent ID: 8459003

Claim:
A method for after-treatment of an exhaust gas of an internal combustion engine, comprising: feeding the exhaust gas through a catalytic converter system connected downstream of the internal combustion engine and comprising at least one catalytic converter having a noble metal depletion comprising at least the elements palladium and rhodium, wherein the elements palladium and rhodium are present in the noble metal depletion in a weight ratio of >5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1 or 12:1, operating the catalytic converter such that: after an engine start of the internal combustion engine during an operation according to the New European Driving Cycle, the catalytic converter exceeds a temperature T K of 300° C. within a time interval of 30 seconds, and the catalytic converter has a depletion comprising rhodium B Rh between 0.221 g and 0.106 g, wherein within 10 seconds after the engine start during the operation according to the New European Driving Cycle the cumulative exhaust gas emissions before the catalytic converter includes at least one of: carbon hydrides having a concentration not exceeding 0.05 g/km and nitrogen oxides having a concentration not exceeding 0.04 g/km, and wherein the internal combustion engine achieves at least the emission limit values of EU Standard 4 during the New European Driving Cycle.