METERING UNIT WITH LIQUID COOLING Russian patent published in 2017 - IPC F01N3/20 

FIELD: engines, methods and fuel burners.

SUBSTANCE: invention relates to exhaust gas treatment. The metering module (10), for metering the reducing agent into the exhaust tract of an internal combustion engine, has at least one cooler (22, 24), which is designed so, that cooling fluid is passing through it and provides the internal combustion engine cooling . At the top of the metering unit (10) there is its electric connection part (20). Metering module (10) is enclosed in its fully covering solid body (38). It consists of lower and upper coolers (22, 24). The both latter are designed to let the directed flow (34) of cooling liquid to pass over them from the output end portion (18) of the metering module in the direction of its electric connection part (20).

EFFECT: metering valve is able to work at a temperature 200°C and above, as a result of using the invention.

13 cl, 6 dwg