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Abstract

A method for operating an internal combustion engine in a catalytic converter heating operation, the internal combustion engine being able to be operated in a normal operation, including the following steps: ascertaining a first exhaust gas temperature reading, which gives the exhaust gas temperature of the exhaust gas in a first catalytic converter, particularly in an oxidation catalytic converter; operating the internal combustion engine in a first operating mode, in which, in contrast to the normal operation, the exhaust gas, having an increased exhaust gas temperature, is exhausted from at least one cylinder of the internal combustion engine, as long as the first exhaust gas temperature reading has not reached a specified first temperature threshold value. This method enables a robust and simple diagnosis of the effectiveness of the catalytic converter heating operation according to the requirements of CARE Title 13 CCR Section 1968.2 Chapter.

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First Claim