Exhaust gas treatment assembly unit

US11536179B2 · kind B2 · utility

Assignee

• Purem GmbH · DE

Inventors

• Wolfgang Datz · Tübingen, DE
• Markus Henzler · Stuttgart, DE
• Peter Kast · Eßlingen, DE

Key dates

• Filing date: Aug 6, 2020
• Grant date: Dec 27, 2022
• Expiry date: Aug 6, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2470/24
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust gas treatment assembly unit for an exhaust system of an internal combustion engine includes a tubular outer housing (12) elongated in a direction of an outer housing longitudinal axis (LA), a tubular inner housing (14) elongated in the direction of an inner housing longitudinal axis (LI), an exhaust gas treatment unit (16) being carried in the inner housing (14), and a locking fixing device (24) detachably fixing the inner housing in the outer housing. The locking fixing device (24) includes a locking fixing element (26) held at the inner housing (14) in both axial directions with a radially outwards prestressed locking meshing area (28). In association with the locking meshing area (28), a locking receiving area (42) at the outer housing (12), interacts with the locking meshing area (28) for holding the inner housing (14) in the outer housing (12) in at least one axial direction.