Injection device for exhaust system of motor vehicle, has wall opening of inner tube for guiding exhaust gas, where outer tube is provided with another wall opening, and injector is fixed on outer tube for injecting active substance

摘要

The injection device has a wall opening (6) of an inner tube (2) for guiding exhaust gas, where an outer tube (7) is provided with another wall opening. An injector is fixed on the outer tube for injecting an active substance through an injection channel (13) in the inner tube. An air-filler gap space (11) is partially filled with a thermal insulation material (12).