Exhaust aftertreatment system with heated device

摘要

An exhaust aftertreatment system (10) for a vehicle having an engine (14) includes a fluid passageway (20) extending from the engine to an ambient (18) for fluidly communicating exhaust gas (F), and a NOx reduction catalyst (28) disposed on the fluid passageway and downstream of the engine. An injector (34) is disposed downstream of the engine (14) and upstream of the NOx reduction catalyst (28) on the fluid passageway (20) for injecting a reductant (36) into the fluid passageway. A heated mesh device (44) is disposed on the fluid passageway downstream of the injector (34) and upstream of the NOx reduction catalyst (28). The reductant (36) that is injected from the injector (34) impinges on the heated mesh device (44).