Title:
ALUMINUM ALLOY HEAT EXCHANGER FOR EXHAUST GAS RECIRCULATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/189427
Kind Code:
A1
Abstract:
Provided is an aluminum alloy heat exchanger for exhaust gas recirculation system obtained by brazing a fin material to a tube material. The fin material comprises: a core material containing 0.05-1.50% by mass Si and 0.40-2.00% by mass Mn; and a brazing material containing 3.00-13.00% by mass Si and clad on both sides of the core material. The tube material comprises: a core material containing 0.05-1.50% by mass Si, 0.05-3.00% by mass Cu, and 0.40-2.00% by mass Mn; and a sacrificial anti-corrosion material containing 2.00-6.00% by mass Zn and clad on the inner surface of the core material. The ratio of the surface area Sb (mm2) of the fin material to the surface area Sa (mm2) of the sacrificial anti-corrosion material is less than 200%. According to this invention it is possible to provide an aluminum alloy heat exchanger for exhaust gas recirculation system which has a slow corrosion rate and long service life in ammonium environments in which ammonium is contained in the condensate water of exhaust gas.
Inventors:
OYA YOSHIYUKI (JP)
SHOJI TOMOHIRO (JP)
FUKUMOTO ATSUSHI (JP)
NISHIYAMA KOUKI (JP)
IKEDA TORU (JP)
SHINODA TAKAHIRO (JP)
SHOJI TOMOHIRO (JP)
FUKUMOTO ATSUSHI (JP)
NISHIYAMA KOUKI (JP)
IKEDA TORU (JP)
SHINODA TAKAHIRO (JP)
Application Number:
PCT/JP2019/013300
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
UACJ CORP (JP)
DENSO CORP (JP)
DENSO CORP (JP)
International Classes:
C22C21/00; B23K35/14; B23K35/22; B23K35/28; F02M26/29; F28F21/08
Foreign References:
| JP2014178101A | 2014-09-25 | |||
| JP2014177694A | 2014-09-25 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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