Exhaust gas after-treatment unit for an internal combustion engine and procedure for using a drive mechanism with such an exhaust gas after-treatment unit

An exhaust gas after-treatment unit for an internal combustion engine, comprising:

• a first selective catalytic reduction (SCR) catalytic converter through which exhaust gas from the internal combustion engine is flowable, wherein the first SCR catalytic converter is a first exhaust gas after-treatment element downstream from the internal combustion engine through which the exhaust gas is flowable;
• a particle filter, wherein the particle filter is disposed downstream from the first SCR catalytic converter, wherein the exhaust gas is flowable through the particle filter, and wherein soot particles from the exhaust gas are retainable by the particle filter;
• and
• a second SCR catalytic converter through which the exhaust gas is flowable, wherein the second SCR catalytic converter is disposed downstream from the particle filter;
• wherein the particle filter has a heavy metal and precious metal free catalyzing coating, wherein soot particles retained by the particle filter are oxidizable by the heavy metal and precious metal free catalyzing coating, and wherein the particle filter is a second exhaust gas after-treatment element through which the exhaust gas is flowable after the exhaust gas has exited the internal combustion engine.