# US 10,480,459 B2 · Exhaust gas recirculation line embodied to be partially flexible > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,459 B2 - Document ID: US10480459B2 - Status: Granted - Kind: B2 - Application number: 16/039,312 - Filed: 2018-07-18 - Published: 2019-02-14 - Granted: 2019-11-19 - Earliest claimed: 2017-07-19 - Assignees: Mahle International GmbH - Applicants: Mahle International GmbH - Inventors: Karsten Emrich; Vahid Havaldar; Gaelle Schmidgall - Web page: https://patentgrep.com/patent/US10480459B2 ## CPC - F02M 26/12: characterised by means for attaching parts of an EGR system to each other or to engine parts - F02M 26/11: Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems - F02M 26/19: Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system - F02M 35/10222: {Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission} - F16L 11/15: corrugated (F16L11/16 takes precedence) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 2) 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. ### Claim 4 (depends on 3) 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. ### Claim 5 (depends on 1) The exhaust gas recirculation line according to claim 1, wherein the front side of the pipe section is closed by a cover. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 1) 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. ### Claim 8 (depends on 7) The exhaust gas recirculation line according to claim 7, wherein the pipe section is rotatably arranged in the fastening console. ### Claim 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. ### Claim 10 (depends on 9) 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. ### Claim 11 (depends on 10) 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. ### Claim 12 (depends on 11) 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. ### Claim 13 (depends on 9) 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. ### Claim 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. ### Claim 15 (depends on 14) 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. ### Claim 16 (depends on 14) 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. ### Claim 17 (depends on 16) 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. ### Claim 18 (depends on 17) 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. ### Claim 19 (depends on 14) The internal combustion engine according to claim 14, wherein the front side of the pipe section is closed by a cover. ### Claim 20 (depends on 14) 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.