Exhaust pipe elbow

Patent metadata

Field	Value
Publication number	US-2018252143-A1
Application number	US-201615560699-A
Country	US
Kind code	A1
Filing date	Apr 8, 2016
Priority date	Apr 15, 2015
Publication date	Sep 6, 2018
Grant date	—

Abstract

An exhaust pipe formed from two pipe elbows each having a pipe wall and a center axis, each pipe elbow being formed from two half shells, wherein each half shell has an inner edge side (Ri) and an outer edge side (Ra), and the inner edge sides and the outer edge sides can be brought into contact with each other in order to form the pipe elbow, wherein each pipe elbow has an end (S 1 , S 2 ) and the two ends (S 1 , S 2 ) can be brought into contact with each other in order to form the exhaust pipe. All four half shells are identical parts, wherein each pipe elbow has only one inlet opening (E 1 , E 2 ) and only one outlet opening (A 1 , A 2 ).

First claim

What is claimed is:

1 . An exhaust pipe formed from two pipe elbows, each having a pipe wall and a centre axis, each pipe elbow being formed from two half-shells, wherein each half-shell has an inner edge side Ri and an outer edge side Ra, which can be brought into contact with each other to form the pipe elbow, wherein each pipe elbow has a front side S 1 , S 2 , and the two front sides S 1 , S 2 can be brought into contact with each other in order to form the exhaust pipe,
wherein all four half-shells are identical parts, wherein the respective pipe elbow has only one inlet opening E 1 , E 2 and only one outlet opening A 1 , A 2 .

2 . The exhaust pipe according to claim 1 , wherein the centre axis of the respective pipe elbow has a curve radius Rm, wherein the curve radius Rm is constant over the length of the centre axis, or varies between the values m 1 and m 2 , with m 1 <=5 m 2 .

3 . The exhaust pipe according to claim 1 , wherein the centre axis of the respective pipe elbow has a curve radius Rm and the pipe elbow has a diameter Dr, wherein the following applies: 2 Rm>Dr or Rm>Dr.

4 . The exhaust pipe according to claim 1 , wherein the edge side Ri has a length li and the edge side Ra has a length la, wherein on at least one edge side Ri, Ra, a system frame Wi, Wa is provided which is arranged radially offset in relation to the centre axis to the pipe wall, wherein the respective system frame Wi, Wa extends over maximum 50% of the length li, la.

5 . The exhaust pipe according to claim 4 , wherein on at least one edge side Ri, Ra, a coupling bridge Ki, Ka is provided, which extends over a maximum of 50% of the length li, la, wherein for the purpose of forming the pipe elbow, the coupling bridge Ki, Ka of a half-shell can be brought into a form-fit connection with the edge side Ri, Ra or with a system frame Wi, Wa of the adjacent half-shell.

6 . The exhaust pipe according to claim 5 , wherein the system frame Wi, Wa and the coupling bridge Ki, Ka are limited to one half Hi, Ha respectively of the edge side Ri, Ra.

7 . The exhaust pipe according to claim 1 , wherein on at least one front side S 1 , S 2 of the pipe elbow, a shoulder U 1 , U 2 is provided with an expanded diameter D, which forms a sleeve.

8 . The exhaust pipe according to claim 5 , wherein a cylindrical connection piece is provided, which in the area of the front side S 1 , S 2 can be inserted into the inlet opening E 1 , E 2 or into the outlet opening A 1 , A 2 , and against which the shoulder U 1 , U 2 can be brought in contact with in the axial direction.

9 . The exhaust pipe according to claim 1 , wherein the first pipe elbow has an inlet opening E 1 which tensions an inlet plane L 1 , and the second pipe elbow has an outlet opening A 2 , which tensions an outlet plane L 2 , wherein the outlet opening A 1 of the first pipe elbow and the inlet opening E 2 of the second pipe elbow each have a central point P 1 , and both pipe elbows can be freely pivoted relative to each other with the planes L 1 , L 2 in relation to a rotation axis R, wherein the axis R cuts the central point P 1 and runs tangentially to the centre axis.

10 . An exhaust pipe according to claim 1 , formed from at least two pipe elbows and at least one connection piece with a length v, wherein the length v determines a distance a between the front side S 1 and the front side S 2 of the two pipe elbows, wherein connection pieces of different lengths v are provided so that the distance a can be altered.

11 . An exhaust pipe according to claim 1 , formed a maximum of two, three or four identical pipe elbows, and in each case at most double the number of identical half-shells.

12 . The exhaust pipe according to claim 4 , wherein the edge side Ri has a length li and the edge side Ra has a length la, wherein on at least one edge side Ri, Ra, a system frame Wi, Wa is provided which is arranged radially offset in relation to the centre axis to the pipe wall, wherein the respective system frame Wi, Wa extends over maximum 20% to 40% of the length li, la.

13 . The exhaust pipe according to claim 2 , wherein the centre axis of the respective pipe elbow has a curve radius Rm and the pipe elbow has a diameter Dr, wherein the following applies: 2 Rm>Dr or Rm>Dr.

14 . The exhaust pipe according to claim 13 , wherein the edge side Ri has a length li and the edge side Ra has a length la, wherein on at least one edge side Ri, Ra, a system frame Wi, Wa is provided which is arranged radially offset in relation to the centre axis to the pipe wall, wherein the respective system frame Wi, Wa extends over maximum 20% to 40% of the length li, la.

15 . The exhaust pipe according to claim 14 , wherein on at least one edge side Ri, Ra, a coupling bridge Ki, Ka is provided, which extends over a maximum of 50% of the length li, la, wherein for the purpose of forming the pipe elbow, the coupling bridge Ki, Ka of a half-shell can be brought into a form-fit connection with the edge side Ri, Ra or with a system frame Wi, Wa of the adjacent half-shell.

16 . The exhaust pipe according to claim 15 , wherein the system frame Wi, Wa and the coupling bridge Ki, Ka are limited to one half Hi, Ha respectively of the edge side Ri, Ra.

17 . The exhaust pipe according to claim 16 , wherein on at least one front side S 1 , S 2 of the pipe elbow, a shoulder U 1 , U 2 is provided with an expanded diameter D, which forms a sleeve.

18 . The exhaust pipe according to claim 17 , wherein a cylindrical connection piece is provided, which in the area of the front side S 1 , S 2 can be inserted into the inlet opening E 1 , E 2 or into the outlet opening A 1 , A 2 , and against which the shoulder U 1 , U 2 can be brought in contact with in the axial direction.

19 . The exhaust pipe according to claim 18 , wherein the first pipe elbow has an inlet opening E 1 which tensions an inlet plane L 1 , and the second pipe elbow has an outlet opening A 2 , which tensions an outlet plane L 2 , wherein the outlet opening A 1 of the first pipe elbow and the inlet opening E 2 of the second pipe elbow each have a central point P 1 , and both pipe elbows can be freely pivoted relative to each other with the planes L 1 , L 2 in relation to a rotation axis R, wherein the axis R cuts the central point P 1 and runs tangentially to the centre axis.

20 . An exhaust pipe according to claim 19 , formed from at least two pipe elbows and at least one connection piece with a length v, wherein the length v determines a distance a between the front side S 1 and the front side S 2 of the two pipe elbows, wherein connection pieces of different lengths v are provided so that the distance a can be altered.

Assignees

• Tenneco Gmbh

Inventors

• Schliesche Dirk

Classifications

• F01N13/1888 Primary

  the housing of the assembly consisting of two or more parts, e.g. two half-shells · CPC title

• F16L43/001

  made of metal · CPC title

• F01N13/1872

  the assembly using stamp-formed parts or otherwise deformed sheet-metal · CPC title

• F01N2450/22

  by welding or brazing · CPC title

• F01N13/08 Primary

  Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} · CPC title