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Method and Device to Determine the Nitrogen Oxide-Storage Capability of a Catalytic Converter of a Vehicle
Method and Device to Determine the Nitrogen Oxide-Storage Capability of a Catalytic Converter of a Vehicle
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机译:确定车辆催化转化器的氮氧化物存储能力的方法和装置
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摘要
A method to determine a nitrogen oxide storage capacity of a catalytic converter of a vehicle in which a concentration of nitrogen oxides is measured in an exhaust gas downstream of the catalytic converter includes, in at least one first step, setting a concentration of nitrogen oxides in the exhaust gas at which the catalytic converter absorbs nitrogen oxides, and in at least one second step, setting a concentration of nitrogen oxides in the exhaust gas at which a desorption of nitrogen oxides by the catalytic converter takes place. The nitrogen oxide storage capacity of the catalytic converter is determined by considering a behavior of the catalytic converter at least during the desorption of nitrogen oxides.
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