The exhaust system may also include {HEAD ~ a controller} configured to selectively control {TAIL ~ an amount} of fuel injected by each of the plurality of dosers based on a velocity of the exhaust adjacent to each doser 
configured to selectively control
The exhaust system may also include { HEAD ~ a controller } configured to selectively control { TAIL ~ an amount } of fuel injected by each of the plurality of dosers based on a velocity of the exhaust adjacent to each doser
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH