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METHOD FOR OPERATING AN EXHAUST GAS AFTERTREATMENT SYSTEM OF AN INTERNAL COMBUSTION ENGINE WHICH HAS A THREE-WAY PRE-CATALYTIC CONVERTER AND EXHAUST GAS AFTERTREATMENT SYSTEM
METHOD FOR OPERATING AN EXHAUST GAS AFTERTREATMENT SYSTEM OF AN INTERNAL COMBUSTION ENGINE WHICH HAS A THREE-WAY PRE-CATALYTIC CONVERTER AND EXHAUST GAS AFTERTREATMENT SYSTEM
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机译:具有三段式预催化转化器和排气后处理系统的内燃机的排气后处理系统的操作方法
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摘要
A method for operating an exhaust gas aftertreatment system of an internal combustion engine and an exhaust gas aftertreatment system are described. The internal combustion engine has a turbine wheel, which is arranged in the exhaust gas line, of an exhaust gas turbocharger, and a bypass line which bypasses the turbine wheel and in which a three-way pre-catalytic converter is arranged. A three-way main catalytic converter is situated in the exhaust gas line. A NOx sensor is provided which measures the NOx fraction in the exhaust gas downstream of the three-way pre-catalytic converter. If the measured NOx fraction exceeds a threshold value, the three-way pre-catalytic converter is diagnosed as faulty.
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