Vaporization device for a motor vehicle exhaust system, exhaust system for a motor vehicle and method for producing a vaporization device

A method of producing a vaporization device for a motor vehicle exhaust system for vaporizing an oxidizable liquid and introducing a vapor produced from the oxidizable liquid into an exhaust gas flow of the motor vehicle exhaust system, the vaporization device including a heating element arranged in a housing and having the form of a glowing filament, the housing having an inlet for the liquid, at least one vaporization chamber, and an outlet for the vapor, the method including the following steps:

• a) producing the housing and a glow tube as a one-piece unit by forming an elongated tube to have an open end and a closed end, the outlet being formed within a side wall of the elongated tube at a location between the open and closed ends, and wherein the one-piece unit is configured to have the outlet project into the exhaust gas flow with the glow tube being arranged external to the exhaust gas flow;
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• b) subsequently inserting the glowing filament through the open end and into the glow tube.

A method of producing a vaporization device for a motor vehicle exhaust system for vaporizing an oxidizable liquid and introducing a vapor produced from the oxidizable liquid into an exhaust gas flow of the motor vehicle exhaust system, the vaporization device including a heating element arranged in a housing and having the form of a glowing filament, the housing having an inlet for the liquid, at least one vaporization chamber, and an outlet for the vapor, the method including the following steps:

• a) manufacturing the housing by forming an elongated tube to have an open end and a closed end, the outlet being formed within a side wall of the elongated tube at a location between the open and closed ends;
• and
• b) inserting a prefabricated separate unit comprised of the glowing filament and a glow tube into the open end of the housing and fixing the prefabricated separate unit directly to a portion of the housing that includes the outlet, wherein the portion that has the outlet is configured to project into the exhaust gas flow, and wherein the glow tube is arranged external to the exhaust gas flow.