US 12,270,324 B2
Exhaust gas treatment unit
Nils Lendle, Edenkoben (DE); and Ralf Mueller, Edenkoben (DE)
Assigned to Tenneco GmbH, Edenkoben (DE)
Appl. No. 18/685,033
Filed by TENNECO GMBH, Edenkoben (DE)
PCT Filed Aug. 18, 2022, PCT No. PCT/EP2022/073033
§ 371(c)(1), (2) Date Feb. 20, 2024,
PCT Pub. No. WO2023/021121, PCT Pub. Date Feb. 23, 2023.
Claims priority of application No. 10 2021 121 653.2 (DE), filed on Aug. 20, 2021.
Prior Publication US 2024/0218819 A1, Jul. 4, 2024
Int. Cl. F01N 13/00 (2010.01); F01N 1/02 (2006.01); F01N 3/24 (2006.01)
CPC F01N 13/0097 (2014.06) [F01N 1/023 (2013.01); F01N 3/24 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An exhaust gas treatment unit, comprising:
a housing wall comprising at least one first exhaust gas passage opening and at least one heating element for heating an exhaust gas stream, wherein the at least one heating element is placed upstream of the at least one first exhaust gas passage opening,
wherein a hood is provided which serves to be placed in front of the at least one first exhaust gas passage opening,
wherein the at least one heating element is arranged inside the hood and is placed in front of the exhaust gas passage opening;
wherein the hood together with the housing wall delimits a first exhaust gas chamber, the housing wall together with a housing cover or together with a housing outer wall and a further housing wall delimits a second exhaust gas chamber, the hood being arranged in the second exhaust gas chamber.