A method and device for treating {HEAD ~ exhaust gases} of an internal combustion engine with {TAIL ~ a reducing agent} introduced into the exhaust gases 
A method and device for treating { HEAD ~ exhaust gases } of an internal combustion engine with { TAIL ~ a reducing agent } introduced into the exhaust gases
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH