The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
May. 22, 2006
Roland Starck, Bellheim, DE;
Oleg Kexel, Ettlingen, DE;
Gerhard Thome, Kronau, DE;
Armin Lang, Barbelroth, DE;
Roland Starck, Bellheim, DE;
Oleg Kexel, Ettlingen, DE;
Gerhard Thome, Kronau, DE;
Armin Lang, Barbelroth, DE;
Eichenauer Heizelemente GmbH & Co. KG, Kandel, DE;
Abstract
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.