Mahle International Gmbh

Klaus Dr Beetz

Gerd Kissner

The present invention relates to a heating device () for fuel with at least one PTC heating element () and a heat transfer device () in thermal contact with the latter, which exhibits two heat transfer elements (), and with a tubular casing () made of plastic that envelop the heat transfer device () and the a least one PTC heating element (), wherein the diesel fuel to be heated flows through the casing () and around the heat transfer device () during operation of the heating device (). Provided on the interior side of the tubular casing () is a guiding device that interacts with the at least one PTC heating element () and/or the heat transfer device () in such a way that at least one PTC heating element () and the heat transfer device () can be axially inserted into the casing () for assembling the heating device (). Of significance relative to the invention in this case is that a spring system () separate from the heat transfer device () is provided, which tensions the heat transfer device () against the guiding device so as to fix it in place.

Heating device for fuel

An electric motor for driving an inertia separator is provided, including a stator and a rotor. The stator is arranged in a stator space enclosed by a stator housing. The rotor is arranged in a rotor space concentrically with the stator with regard to an axis of rotation. A ring gap is formed radially between the rotor and the stator such that it separates the stator space from the rotor space. A housing bottom includes a nonmagnetic section extending through the ring gap. An inertia separator includes a second rotor operably connected to the rotor. A separator housing encloses a void containing the second rotor, wherein the housing bottom is arranged on the separator housing on a side facing the electric motor such that the nonmagnetic section of the housing bottom defines an opening in the rotor space that is oriented towards the void.

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Karlsruhe, Germany

Klaus Dr Beetz