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