The exhaust system includes an exhaust manifold 30, {HEAD ~ a diesel oxidation catalyst} 32, and {TAIL ~ a particulate filter} 34 
The exhaust system includes an exhaust manifold 30 , { HEAD ~ a diesel oxidation catalyst } 32 , and { TAIL ~ a particulate filter } 34
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH