US 10,892,073 B2
Heatable motor vehicle operating liquid tank and method of producing the heating device for it
Fabrizio Chini, Isera (IT); Ivan De Metri, Bolzano (IT); Luca Marini, Besenello (IT); and Francesca Brunori, Leifers (IT)
Assigned to Röchling Automotive SE & Co. KG, Mannheim (DE)
Filed by Röchling Automotive SE & Co. KG, Mannheim (DE)
Filed on Nov. 13, 2015, as Appl. No. 14/941,091.
Claims priority of application No. 10 2014 223 517 (DE), filed on Nov. 18, 2014.
Prior Publication US 2016/0138455 A1, May 19, 2016
Int. Cl. H01C 17/02 (2006.01); F01N 3/20 (2006.01); H01C 17/28 (2006.01); H01C 1/142 (2006.01); H01C 7/102 (2006.01)
CPC H01C 17/02 (2013.01) [F01N 3/2066 (2013.01); H01C 1/142 (2013.01); H01C 7/102 (2013.01); H01C 17/283 (2013.01); H01C 17/288 (2013.01); F01N 2610/10 (2013.01); F01N 2610/1406 (2013.01); Y02A 50/20 (2018.01); Y02T 10/12 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A motor vehicle operating liquid tank for storing and discharging an aqueous urea solution, the motor vehicle operating liquid tank comprising a tank shell surrounding a tank volume and a tank opening extending through the tank shell for receiving an associated aqueous urea solution and a removal opening extending through the tank shell for discharging the associated aqueous urea solution, the motor vehicle operating liquid tank further comprising a planar heating device in the tank volume having an electrical resistance heating track which is arranged sandwiched between two parallel plastic films encasing the resistance heating track, wherein the plastic films each comprise a layer of compatible thermoplastic plastics at least on their surfaces facing one another which layers are heat-welded to one another substantially over their entire surfaces in a connection section with the complete inclusion of the resistance heating track, with the exception of those sites of the connection section at which a resistance heating track section is provided, wherein the planar heating device is arranged in the tank volume surrounding at least one of the removal opening and a device cooperating with the removal opening for said discharging of the associated aqueous urea solution,
wherein at least one of a punctiform seam connection and a web-shaped seam connection is formed between the plastic films, and
wherein the at least one of a punctiform seam connection and a web-shaped seam connection carries a fixing means.