US 12,228,227 B2
Connection element for an exhaust system of an internal combustion engine
Hagen Korb, Aichwald (DE); Christoph Gotthard, Esslingen (DE); and Kresimir Jambrosic, Reichenbach an der Fils (DE)
Assigned to Purem GmbH, Neunkirchen (DE)
Filed by Purem GmbH, Neunkirchen (DE)
Filed on Dec. 14, 2022, as Appl. No. 18/065,688.
Claims priority of application No. 10 2021 132 929.9 (DE), filed on Dec. 14, 2021.
Prior Publication US 2023/0184357 A1, Jun. 15, 2023
Int. Cl. F16L 23/04 (2006.01); F16L 23/024 (2006.01)
CPC F16L 23/04 (2013.01) [F16L 23/024 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A connection element for an exhaust system of an internal combustion engine, the connection element defining a longitudinal axis (A) and comprising:
a connection element body extending in the direction of said longitudinal axis (A) and having a first axial end;
said connection element body defining an inner circumferential surface delimiting an exhaust gas passage of said connection element;
a connecting flange extending radially outward from said connection element body and surrounding said longitudinal axis (A);
said connecting flange having an abutment surface orientated in the direction of said first axial end of said connection element body;
said connection element body having a portion thereof projecting axially beyond said abutment surface to define said first axial end and to define a centering section;
said centering section defining a centering outer circumferential surface; and,
wherein at least one of the following applies:
i) a depression surrounds said longitudinal axis (A) and said depression defines a depression surface offset axially in a direction away from said first axial end with respect to said abutment surface; and,
ii) a depression surrounds said longitudinal axis (A) and said depression defines a depression surface offset radially inward with respect to said centering outer circumferential surface disposed in a transitional region between said abutment surface and said centering outer circumferential surface;
wherein said depression has a constant radius of curvature (R) in a transition from said abutment surface to said centering outer circumferential surface, and
wherein a radius of curvature (R) of said depression in said transition from said abutment surface to said centering outer circumferential surface lies in a range of 1.1 mm to 1.4 mm.