Burner with air-assisted fuel nozzle and vaporizing ignition system

A burner for an exhaust aftertreatment system comprising:

• a housing defining an interior volume;
• and
• a nozzle assembly mounted to the housing and including a body and a heating element, the body extending into the interior volume and including first and second cavities, a fuel inlet passage and an air inlet passage, the first cavity receiving at least a portion of the heating element and being in fluid communication with the fuel inlet passage and a fuel discharge passage such that fuel from the fuel inlet passage is heated in the first cavity by the heating element and discharged from the first cavity through the fuel discharge passage, the second cavity being in fluid communication with the air inlet passage and an air discharge passage, the first and second cavities being fluidly isolated from each other and supplying fuel and air, respectively, to an exit aperture disposed downstream of the fuel discharge aperture and the air discharge aperture,
• wherein the body of the nozzle assembly includes a main body portion, an outer nozzle body and an inner nozzle body, the main body portion including a central aperture and a recess, the heating element being fixedly received in the recess, the inner nozzle body being fixedly received in the central aperture, and wherein the first cavity is formed in the inner nozzle body and is in fluid communication with the recess.