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1. US20140060504 - Exhaust gas recirculation apparatus and method for forming same

Office United States of America
Application Number 13605896
Application Date 06.09.2012
Publication Number 20140060504
Publication Date 06.03.2014
Grant Number 09140217
Grant Date 22.09.2015
Publication Kind B2
IPC
F02M 25/07
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
06adding lubricant vapours
07adding exhaust gases
CPC
F02M 26/32
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
22with coolers in the recirculation passage
29Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
32Liquid-cooled heat exchangers
F28D 7/1684
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
7Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
16the conduits being arranged in parallel spaced relation
1684the conduits having a non-circular cross-section
F28D 21/0003
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
21Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
0001Recuperative heat exchangers
0003the heat being recuperated from exhaust gases
F28F 1/025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
1Tubular elements; Assemblies of tubular elements
02Tubular elements of cross-section which is non-circular
025with variable shape, e.g. with modified tube ends, with different geometrical features
F28F 1/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
1Tubular elements; Assemblies of tubular elements
08Tubular elements crimped or corrugated in longitudinal section
F28F 2265/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
2265Safety or protection arrangements; Arrangements for preventing malfunction
26for allowing differential expansion between elements
Applicants Ryan Collins
Senior IP GmbH
Michael Murphy
Thomas Carney
Timothy Maurice Walsh
Inventors Ryan Collins
Michael Murphy
Thomas Carney
Timothy Maurice Walsh
Agents Richard D. Harris
Greenberg Traurig, LLP
Title
(EN) Exhaust gas recirculation apparatus and method for forming same
Abstract
(EN)

An exhaust gas recirculation cooler for internal combustion engines and a method of forming same. One or more cooler tubes incorporate a flexible section, comprised of one or more integrally formed convolutions, with a tube and fin architecture. The exhaust gas recirculation cooler provides thermal compensation, on a per-tube basis, with the flexible sections of the one or more cooler tubes individually displacing upon the thermal expansion of any of the respective tubes.