Exhaust gas recirculation line embodied to be partially flexible

Patent metadata

Field	Value
Publication number	US-10480459-B2
Application number	US-201816039312-A
Country	US
Kind code	B2
Filing date	Jul 18, 2018
Priority date	Jul 19, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

An exhaust gas recirculation line may include an at least partially flexible body. The body may include a pipe section at an end. The pipe section may be closed on a front side and may include at least two openings on a jacket side.

First claim

The invention claimed is:

1. An exhaust gas recirculation line comprising:
an at least partially flexible body;
body including a pipe section at an end, the pipe section closed on a front side and including at least two openings on a jacket side.

2. The exhaust gas recirculation line according to claim 1 , wherein the body further includes a flange configured to couple to an exhaust gas recirculation cooler.

3. The exhaust gas recirculation line according to claim 2 , wherein the body further includes a flexible bellows section arranged between the pipe section and the flange.

4. The exhaust gas recirculation line according to claim 3 , wherein at least the pipe section and the bellows section are integrally provided as a single piece and define the body.

5. The exhaust gas recirculation line according to claim 1 , wherein the front side of the pipe section is closed by a cover.

6. The exhaust gas recirculation line according to claim 1 , wherein at least one of:
the at least two openings are arranged on the jacket side opposite one another; and
the at least two openings are structured as elongated holes extending in a circumferential direction of the pipe section.

7. The exhaust gas recirculation line according to claim 1 , further comprising a fastening console engaging around the pipe section and arranged on the pipe section.

8. The exhaust gas recirculation line according to claim 7 , wherein the pipe section is rotatably arranged in the fastening console.

9. An exhaust gas recirculation cooler comprising:
an at least partially flexible exhaust gas recirculation line including a pipe section, the pipe section closed on a front side and including at least two openings on a jacket side.

10. The exhaust gas recirculation cooler according to claim 9 , wherein the exhaust gas recirculation line further includes a flange coupling the exhaust gas recirculation line to the exhaust gas recirculation cooler.

11. The exhaust gas recirculation cooler according to claim 10 , wherein the exhaust gas recirculation line further includes a flexible bellows section arranged between the pipe section and the flange.

12. The exhaust gas recirculation cooler according to claim 11 , wherein at least the pipe section and the bellows section are integrally provided as a single piece and define the exhaust gas recirculation line.

13. The exhaust gas recirculation cooler according to claim 9 , wherein:
the front side of the pipe section is closed by a cover; and
at least one of:
the at least two openings are arranged on the jacket side opposite one another; and
the at least two openings are structured as elongated holes extending in a circumferential direction of the pipe section.

14. An internal combustion engine comprising:
an exhaust gas recirculation cooler including an at least partially flexible exhaust gas recirculation line, the exhaust gas recirculation line including a pipe section, the pipe section closed on a front side and including at least two openings on a jacket side; and
an intake tract including an intake line;
wherein the pipe section of the exhaust gas recirculation line is arranged within the intake line and coupled thereto via a fastening console.

15. The internal combustion engine according to claim 14 , wherein the at least two openings are arranged in the intake line and aligned in a flow direction of the intake line.

16. The internal combustion engine according to claim 14 , wherein the exhaust gas recirculation line further includes a flange coupling the exhaust gas recirculation line to the exhaust gas recirculation cooler.

17. The internal combustion engine according to claim 16 , wherein the exhaust gas recirculation line further includes a flexible bellows section arranged between the pipe section and the flange.

18. The internal combustion engine according to claim 17 , wherein at least the pipe section and the bellows section are integrally provided as a single piece and define the exhaust gas recirculation line.

19. The internal combustion engine according to claim 14 , wherein the front side of the pipe section is closed by a cover.

20. The internal combustion engine according to claim 14 , wherein at least one of:
the at least two openings are arranged on the jacket side opposite one another; and
the at least two openings are structured as elongated holes extending in a circumferential direction of the pipe section.

Assignees

• Mahle Int Gmbh

Inventors

• Emrich Karsten
• Havaldar Vahid
• Schmidgall Gaelle

Classifications

• F02M26/11

  Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems · CPC title

• F16L11/15

  corrugated (F16L11/16 takes precedence) · CPC title

• F02M35/10222

  Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission · CPC title

• F02M26/12 Primary

  characterised by means for attaching parts of an EGR system to each other or to engine parts · CPC title

• F02M26/19

  Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system · CPC title