| 摘要 |
The invention relates to a method for operating an internal combustion engine and an internal combustion engine, comprising a combustion chamber, means for adjusting the air-fuel ratio (lambda) in the combustion chamber, a first sensor for determining the oxygen content of the waste gas exiting from the combustion chamber, a catalytic converter arranged downstream from the first sensor for catalytic treatment of waste gas and a second sensor arranged downstream from the converter for determining the NOx-concentration of the waste gas exiting from the combustion chamber. The means for adjusting the air-fuel-ratio (lambda) of the oxygen content of the waste gas is regulated on the first sensor via a first control circuit and/or on the second sensor via a second control circuit. The invention is characterised in that regulation by the means for adjusting the air-fuel-ratio (lambda) according to the NOx-concentration of the waste gas on the second sensor.
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