Eichenauer Heizelemente Gmbh & Co. Kg

Armin Lang

Roland Starck

Jürgen Stritzinger

Gerhard Thome

Arno Lauth

Oleg Kexel

Frank Kamy

Martin Kleemann

Rudi Kitt

The invention relates to an electrical heater with a tubular housing and with a heating insert inserted in the housing. The heating insert includes at least one PTC thermistor. Herein, at least one concave indentation is formed in the housing, which is at least punctually in contact with a corresponding concave indentation of the heating insert. Furthermore, the invention relates to a method for manufacturing such an electrical heater.

Electrical heater and method for manufacturing an electrical heater

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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Barbelroth, Germany

Armin Lang