Heater tube for an exhaust system

摘要

A heater tube (42) for an exhaust system (14) is disclosed. The heater tube may have an open end (44) to receive heated exhaust from a preheater (34). The heater tube may have a closed end (46) located opposite the open end. The heater tube may also have an outer surface (50) extending from the open end to the closed end. The heater tube may further have a fin (52) attached to the outer surface. In addition, the heater tube may have an opening (48) disposed on the outer surface to discharge the heated exhaust.