Robert Boschgmbh

Leopold Bernegger

Ferdinand Reiter

Bernhard Hager

Rainer Haeberer

Matthias Horn

Michael Offenhuber

Hartmut Lueders

Carlos J Blasco Remacha

Volker Brielmann

Alfonso Baz

Franz Lackner

Johann Siller

Alberto Parra Navarrete

Armin Strauch

Disclosed is a filter device (), particularly a liquid filter, comprising a filter element () that is disposed in a filter housing () and a heater () for heating medium flowing through the filter device (). The inventive filter device () is characterized in that the heater () is designed with at least one heating circuit () that is molded into the filter housing (). Alternatively or additionally, the heater () is designed with at least one heating circuit () which is provided with an electrical contact () in at least one of the final zones thereof, said electrical contact () being riveted to the heating circuit ().

Filter device with a heater

A metering device for introducing liquid reducing agent into an exhaust gas pipe. A metering valve is supplied with contents from a working tank by a delivery unit and dispenses the tank contents in a discharge direction. The delivery unit establishes a negative pressure between the delivery unit and the metering valve when the delivery direction is reversed. The negative pressure causes gas to be drawn off through the metering valve against the discharge direction. The delivery direction is reversed by either a feed pump with a reversible effective direction or a feed pump and a repolarization valve which communicates with the feed pump and transposes an inlet and an outlet of the feed pump.

Metering device for liquid reducing agent

A metering valve assembly having a metering valve for metering an aqueous urea solution for posttreatment of exhaust gases from internal combustion engines, the liquid being capable of being fed in a feeding direction to the metering valve and a mixing chamber being provided, in which the liquid is miscible with a gas in a gas flow. The metering valve is evacuatable contrary to the feeding direction.

Metering valve assembly and method for operating a metering valve assembly

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Leopold Bernegger