Eichenauer Heizelemente Gmbh & Co. Kg

Gerhard Thome

Roland Starck

Armin Lang

Franz Flick

Kai Wallhaeusser

Willi Arnold

Oleg Kexel

Manfred Stoll

The invention relates to a heating device for diesel fuel comprising at least one PTC heating element (), at least two contact sheets () each comprising a front face () by means of which they contact the PTC heating element () electrically, wherein the PTC heating element () is provided between the front faces () of the two contact sheets (); a plastic housing () enclosing an interior space through which the diesel fuel to be heated can flow and in which the PTC heating element () and the contact sheets () are provided. According to the invention, it is provided that the front faces () of the contact sheets () project, on at least one longitudinal side, over the PTC heating element () so that a gap is provided between the opposing front faces () of the contact sheets (), that the housing () comprises positioning elements () projecting into its interior space, engaging into the gap and, as a stop, securing the PTC heating element () against lateral displacement, and that the contact sheets () each have at least one leg () bent away from the front face () and being pressed into the housing () with prestress so that the front faces () of the contact sheets () are pressed against the PTC heating element () by spring forces exerted by the legs ().

Heating device for diesel fuel and heatable diesel filter system

The invention relates to a urea supply system for a waste gas cleaning catalyst of an internal combustion engine, comprising a urea tank for the receiving of urea solution, a connecting line that connects the urea tank with a waste gas cleaning catalyst, a pump in order to pump urea solution via the connecting line from the urea tank to the catalyst, and a heating insert for the defrosting of frozen urea solution. According to the invention it is provided that the return line is configured and arranged in such a manner that, during operation, because of the urea solution discharged from the return line there is prevented the forming of an air gap between the heating insert and the frozen urea solution. The invention relates also to a heating insert for such a urea supply system.

Urea supply system for a waste gas cleaning catalyst and heating insert suitable therefor

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Kronau, Germany

Gerhard Thome