The exhaust system may further have a plurality of dosers associated with the diffuser and configured to inject {HEAD ~ fuel} into {TAIL ~ the diffuser} 
into
The exhaust system may further have a plurality of dosers associated with the diffuser and configured to inject { HEAD ~ fuel } into { TAIL ~ the diffuser }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL