Motor-vehicle internal combustion engine with exhaust-gas recirculation

摘要

A motor vehicle combustion engine includes an air supply section and an exhaust gas recirculation section that includes a particle filter and an SCR exhaust gas purification component. A first exhaust gas turbocharger includes a turbine arranged upstream of the particle filter in the exhaust gas section. A first exhaust gas recirculation line, which diverges from the exhaust gas section upstream of the turbine of the first exhaust gas turbocharger, and a second exhaust gas recirculation line, which diverges from the exhaust gas section downstream of the particle filter are provided to recirculate the exhaust gas from the exhaust gas section into the air supply system. An SCR catalyst is arranged in the second exhaust gas recirculation line.

主权项

1. A motor vehicle combustion engine, comprising:
an air supply system configured to supply combustion air to the combustion engine; an exhaust gas section configured to receive an exhaust gas of the combustion engine, wherein the exhaust gas section includes a particle filter and an SCR exhaust gas purification component, which is capable of selective catalytic nitrogen oxide reduction by means of ammonia; an addition device configured to add ammonia or a reduction means configured to separate ammonia to the exhaust gas section upstream of the SCR exhaust gas purification component; an first exhaust gas turbocharger that includes a turbine arranged upstream of the particle filter in the exhaust gas section; and wherein in order to recirculate the exhaust gas from the exhaust gas section into the air supply system, the motor vehicle combustion engine further comprises
a first exhaust gas recirculation line, which diverges from the exhaust gas section upstream of the turbine of the first exhaust gas turbocharger; anda second exhaust gas recirculation line, which diverges from the exhaust gas section downstream of the particle filter, wherein the second exhaust gas recirculation line include an SCR catalyst.