Patent · US Expired

Exhaust gas heat exchanger and method for the production thereof

US7278473B2 · kind B2 · utility

3Cited by

5References

5Claims

0Family size

Assignee

Behr GmbH & Co. · DE

Inventors

Steffen Brunner · Backnang, DE
Thomas E. Bachner, Jr. · Bellefonte, US
Bernd Grünenwald · Jeffery Road, DE
Joachim Schemel · Großenhain, DE

Key dates

Filing date	Jun 23, 2003
Grant date	Oct 9, 2007
Priority date	—
Expiry date	Aug 14, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49373
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention relates to an exhaust gas heat exchanger for motor vehicles, comprising a cluster of exhaust pipes (10) which are soldered on the front surface thereof to pipe bottoms, and a housing jacket (3, 3b) which is welded to the pipe bottoms (7). According to the invention, the pipe bottoms are welded to the housing jacket (3b) by means of peripheral welds (11).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.