Metering module with high-temperature resistance

摘要

The invention relates to a device for cooling a metering module (10) for dispensing a process liquid/auxiliary agent into the exhaust gas system of an internal combustion engine. The metering module (10) comprises a housing (12) with a plurality of housing sections (19), (20), (28), (29). A first housing section (19), (20), on which a supply line (18) for the process liquid/auxiliary agent is located, is situated in a region (62) of the metering module (10) that is exposed to varying temperatures, said section being made of metal.

主权项

1. A metering module having a metering valve comprising a metering valve body (30) for dispensing an automotive fluid/additive into an exhaust tract of an internal combustion engine, and the metering module also having a device for cooling the metering valve (10), the device including a housing (12) having a plurality of housing portions (19), (20), (28), (29), wherein a first housing portion (19), (20) is situated in a temperature-exposed area (62) of the metering module (10) and is made from a metal, wherein the first housing portion includes a connection fitting (19) and an upper shell (20), the connection fitting (19) having an inlet (18) for the automotive fluid/additive and the connection fitting (19) also having a connection plate (74), wherein the connection plate (74) and the upper shell (20) are fixed to one another along a first connecting seam (70), and wherein the metering valve body (30) and the connection fitting (19) are fixed to one another along a second connecting seam (72).