INJECTION DEVICE FOR METERING A LIQUID ADDITIVE, METHOD FOR FREEZING AN INJECTION DEVICE, METHOD FOR PRODUCING AN INJECTION DEVICE AND MOTOR VEHICLE

摘要

An injection device for the metering or addition of a liquid additive into an exhaust gas treatment device, includes an outlet region to be brought into contact with the exhaust gas treatment device, a connector region spaced apart from the outlet region and having a fluid-line connector, and a duct or channel for the additive extending from the connector region to the outlet region. A valve controls the metering or addition of the additive, and at least one heat-flow adjustment device defines a direction of freezing in the duct from the outlet region towards the connector region. A method for freezing an injection device, a method for producing an injection device and a motor vehicle are also provided.

主权项

1. An injection device for metering a liquid additive into an exhaust-gas treatment device, the injection device comprising:
an outlet region configured to be placed in contact with the exhaust-gas treatment device; a connector region spaced apart from said outlet region and having a fluid line connector and a duct for the additive running from said connector region to said outlet region; a valve configured to controlling metering of the additive; and at least one heat flow adjustment device configured to predefine a freezing direction in said duct from said outlet region toward said connector region.