US 11,840,950 B2
Vehicle exhaust gas purification device, corresponding production method, exhaust line and vehicle
Eric Ottaviani, Beaucourt (FR); Thomas Sommier, Belfort (FR); Yannick Fourcaudot, Luze (FR); and Ting Feng, Vieux-Charmont (FR)
Assigned to FAURECIA SYSTEMES D'ECHAPPEMENT
Appl. No. 17/610,728
Filed by FAURECIA SYSTEMES D'ECHAPPEMENT, Nanterre (FR)
PCT Filed May 5, 2020, PCT No. PCT/EP2020/063689
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/234180, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 19 05202 (FR), filed on May 17, 2019.
Prior Publication US 2022/0220876 A1, Jul. 14, 2022
Int. Cl. B01D 53/94 (2006.01); F01N 13/18 (2010.01); F01N 3/20 (2006.01)
CPC F01N 3/2013 (2013.01) [B01D 53/94 (2013.01); F01N 13/1805 (2013.01); F01N 13/1838 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An exhaust gas purification device for a vehicle, the exhaust gas purification device comprising:
a tubular shell having an inner surface and having a central axis;
an electric heating member housed in the tubular shell, the electric heating member comprises a heating element made of an electrically conductive material which is permeable to exhaust gases, wherein the heating element is made of a foam, and the heating element having a central portion in which the foam has a first density and at least one reinforced edge area in which the foam has a second density greater than the first density;
a power supply configured to supply power to the electric heating member; and
an attachment configured to directly attach the heating element to the inner surface, and the attachment securing the, or each of, the at least one reinforced edge area to the inner surface.