US20040182547A1 - Waste gas heat exchanger - Google Patents
Waste gas heat exchanger Download PDFInfo
- Publication number
- US20040182547A1 US20040182547A1 US10/476,877 US47687703A US2004182547A1 US 20040182547 A1 US20040182547 A1 US 20040182547A1 US 47687703 A US47687703 A US 47687703A US 2004182547 A1 US2004182547 A1 US 2004182547A1
- Authority
- US
- United States
- Prior art keywords
- housing jacket
- heat exchanger
- bead
- tubes
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000002912 waste gas Substances 0.000 title 1
- 239000002826 coolant Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000007797 corrosion Effects 0.000 claims abstract description 3
- 238000005260 corrosion Methods 0.000 claims abstract description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract 2
- 239000011324 bead Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000035882 stress Effects 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
- B21D17/025—Forming single grooves in sheet metal or tubular or hollow articles by pressing by pressing tubes axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/0205—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/32—Liquid-cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0236—Header boxes; End plates floating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/10—Tubes having non-circular cross section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/02—Corrosion resistive metals
- F01N2530/04—Steel alloys, e.g. stainless steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/10—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes made by hydroforming
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S165/00—Heat exchange
- Y10S165/906—Reinforcement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
Definitions
- the invention is concerned with a heat exchanger, in particular an exhaust gas heat exchanger for motor vehicles, in accordance with the precharacterizing clause of patent claim 1 , as disclosed by DE-A 199 07 163 of the co-applicant.
- the invention is furthermore concerned with a method for producing a housing jacket of an exhaust gas heat exchanger in accordance with the precharacterizing clause of patent claim 12 .
- a bank of tubes has the exhaust gas of an internal combustion engine of a motor vehicle flowing through it and is cooled on the outside by a coolant which is taken from the coolant circuit of the internal combustion engine.
- Exhaust gas heat exchangers of this type which are also called exhaust gas coolers, are used nowadays in the exhaust gas recirculation system (EGR) to cool the exhaust gas.
- EGR exhaust gas recirculation system
- the tube ends of the bank of tubes are welded in each case into a tube plate, i.e. are connected fixedly and tightly to these tube plates.
- the tube plates themselves are welded in turn to a housing jacket which surrounds the bank of tubes.
- the housing jacket has a coolant inlet opening and a coolant outlet opening and has the coolant flowing through it.
- the exhaust gas tubes have the hot exhaust gas flowing through them on the inside and have coolant washing around them on the outside. This coolant also washes around the inside of the housing jacket.
- the exhaust gas tubes therefore reach a substantially higher temperature than the housing jacket, which results in different expansions between the exhaust gas tubes and housing jacket: this leads to thermal stresses, i.e. to compressive stresses in the tubes and tensile stresses in the housing jacket.
- the tubes press on the tube plates and cause deformation or even damage to the tube/plate connections or the tube plate/housing connections, i.e. the exhaust gas cooler can become leaky.
- the housing jacket is provided with at least one encircling expansion bead.
- This bead provides the housing jacket with sufficient elasticity in the longitudinal direction of the tubes, thus making it possible for the housing jacket to expand elastically so as to follow the more pronounced expansion of the exhaust gas tubes without in the process being deformed to an impermissible extent or impairing the weld seam connections between the tubes and plate and plate and housing.
- the expansion bead can be produced in a simple manner, i.e. without substantially greater costs, and does not involve any sort of sealing problems. It is also possible—to increase the elasticity or to enlarge the spring deflection—to provide a plurality of extension bead in the manner of an expansion bellows.
- the housing jacket is produced integrally, for example from a welded tube, it also being possible for said tube to have a noncircular cross section, for example a rectangular cross section.
- the expansion bead is produced by “internal high pressure forming” (IHF) of the housing jacket.
- IHF which is also called hydroforming, is a process which is known per se and in which closed housing parts are “inflated” by means of a liquid pressure medium (water).
- the housings which are to be deformed are placed into dies having the appropriate contour and are then acted upon from the inside by means of a pressure fluid in such a manner that the material of the housing is placed against the contour of the mold.
- the expansion bead can additionally be produced by axial compression, i.e. after a bead in preliminary form has been produced in a first step by IHF.
- dimensions for the housing jacket, in particular the wall thickness thereof, and the dimension of the expansion bead are specified, said dimensions being particularly advantageous and resulting in the desired elasticity of the housing jacket under the loads which occur.
- the material of the housing jacket does not over-expand during production of the expansion bead, but that the designated strength is achieved.
- one advantageous refinement of the invention provides a method which enables simple and cost-effective production of the expansion bead in the housing jacket of the exhaust gas heat exchanger.
- the expansion bead is produced in two stages, namely first of all by means of internal high pressure forming to give a bead which is in a preliminary form and is not yet in the final form, in particular does not yet have the final height (external dimensions).
- the housing jacket is compressed axially, thus causing the material of the bead in preliminary form to flow further outward, and the expansion bead then obtains its final form.
- This two-stage method avoids overloading the material and, at the same time, achieves a defined contour of the expansion bead with a certain elasticity.
- This method can be used particularly easily for the housing jacket and does not cause any change in the construction of the exhaust gas heat exchanger.
- FIG. 1 shows a perspective illustration of part of the exhaust gas heat exchanger
- FIG. 2 shows a longitudinal section through the exhaust gas heat exchanger
- FIG. 3 shows a cross section through the housing jacket of the exhaust gas heat exchanger
- FIG. 4 shows an illustration of a detail of the expansion bead of the housing jacket
- FIG. 5 shows a first method step for producing the expansion bead
- FIG. 6 shows a second method step for producing the expansion bead.
- FIG. 1 shows, in a perspective illustration, part of an exhaust gas heat exchanger 1 as used in the form of an exhaust gas cooler for the exhaust gas recirculation system in diesel engines for motor vehicles.
- the exhaust gas heat exchanger 1 only the front half of which is illustrated, has a housing jacket 2 and a tube plate 3 in which exhaust gas tubes (not illustrated) are accommodated.
- An encircling expansion bead 4 is arranged in the front region of the housing jacket 2 , which has approximately a rectangular cross section with beveled corners.
- This exhaust gas heat exchanger 1 is described in greater detail below, the same reference numbers being used for the same parts.
- FIG. 2 shows the exhaust gas heat exchanger 1 in longitudinal section in a schematic illustration.
- the housing jacket 2 is produced from a closed, i.e. welded tube of stainless steel.
- a bank of tubes comprising a multiplicity of exhaust gas tubes 5 is arranged within this housing jacket 2 .
- These exhaust gas tubes 5 are likewise produced from a stainless steel alloy which is, in particular, heat-resistant and corrosion-resistant.
- the cross section of the exhaust gas tubes 5 is preferably rectangular—as is apparent on the basis of the design of the tube plate 3 in FIG. 1.
- the exhaust gas tubes 5 are arranged with respect to one another in such a manner that they leave between them equidistant gaps 6 through which a liquid coolant, i.e.
- the coolant of the cooling circuit of an internal combustion engine flows.
- the ends 5 a , 5 b of the exhaust gas tubes 5 are held in the tube plate 3 and in a further tube plate 7 and are welded tightly to these tube plates 3 , 7 .
- the tube plates 3 , 7 are, for their part, welded in their circumferential regions 3 a , 7 a to the housing jacket 2 to the housing jacket 2 .
- the housing jacket 2 , the tube plates 3 , 7 and the exhaust gas tubes 5 therefore delimit a defined space for the flow of the coolant.
- the housing jacket 2 In its end-side regions 2 a and 2 b , the housing jacket 2 is somewhat expanded in terms of its cross section, so that it forms a respective annular channel 8 and 9 around the bank of tubes at this point.
- the coolant enters through a coolant inlet (not illustrated), flows through the equidistant gap 6 between the exhaust gas tubes 5 , and passes to the second annular space 9 , from where the coolant leaves the exhaust gas heat exchanger through a coolant outlet (not illustrated).
- this exhaust gas heat exchanger is known, for example through the co-applicant's document which is mentioned at the beginning.
- the inflow and outflow of the exhaust gas via a diffuser (not illustrated here) or an outlet stub is also revealed in this document.
- an expansion bead 4 is arranged in the housing jacket 2 .
- This expansion bead 4 which can also be seen in FIG. 1 as the bead which encircles the entire circumference, gives the housing jacket 2 , which is not very elastic in itself, an elasticity in the longitudinal direction of the exhaust gas tubes 5 , said elasticity permitting the housing jacket 2 to follow the more pronounced expansion of the exhaust gas tubes 5 .
- the exhaust gas tubes 5 which have hot exhaust gas flowing through them on their inside, absorb a higher temperature during operation than the housing jacket 2 , around which the coolant washes, and therefore “grow” to a greater extent than the housing jacket.
- FIG. 3 shows a cross section through the housing jacket 2 , i.e. without the bank of tubes being illustrated.
- the housing jacket 2 has an approximately rectangular cross section with in each case two parallel longer side surfaces 10 and 11 and two somewhat shorter side surfaces 12 and 13 lying opposite each other.
- Longitudinal beads 14 , 15 , 16 , 17 for stiffening the entire cross section are formed in the transition regions of adjacent short and long side surfaces 12 / 10 , 10 / 13 , 13 / 11 and 11 / 12 .
- One of these beads can also be seen clearly in FIG. 1—denoted by 14 there.
- the expansion bead 4 is situated somewhat offset to the rear of the plane of projection and surrounds the entire cross section of the housing jacket 2 , i.e. it is of encircling design.
- the wall thickness of the housing is denoted by s and is s ⁇ 1.5 mm.
- the bead 4 has a width of b ⁇ 6 mm and a height of h ⁇ 6 mm.
- the bead is furthermore characterized by two transition radii R1 and R2 which correspond approximately to the wall thickness s, i.e. lie in the region of 1.5 mm.
- the outermost section of the bead is characterized by an inner radius of R3 ⁇ 1.5 mm, i.e. approximately of the wall thickness S.
- FIG. 5 shows a first method step for producing the expansion bead 4 in the housing jacket 2 .
- the housing jacket 2 is illustrated here only by a sector 20 .
- the housing jacket 2 is placed into two mold halves 21 and 22 , between which a cavity 23 is provided which is preferably closed to the outside by an insertable tool 23 ′.
- the housing jacket 20 is acted upon from the inside, illustrated by an arrow p, by hydroforming or by IHF, so that the housing jacket 20 is deformed in the region of the cavity 23 to the outside to height h1 and takes on a bead-shaped preliminary form 24 .
- This bead 24 in preliminary form has a width b1 corresponding to the cavity 23 between the two mold halves 21 and 22 .
- FIG. 6 shows the second method step for producing the expansion bead 4 —in this case the housing jacket 20 is arranged between two axially movable molds 25 and 26 .
- the housing jacket 20 is compressed by means of the molds 25 and 26 in the axial direction, i.e. corresponding to the arrows F, so that the width of the bead is reduced from b1 (FIG. 5) to b and the height h1 (FIG. 5) is increased to h.
- the bead has obtained its final form in respect of height and width, i.e. it is finished in two consecutive different method steps.
- the two method steps can be carried out in one mold, in which case the insertable tool 23 ′, if the operation is carried out using an insertable tool of this type, has to be removed for the second method step.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to a heat exchanger, especially a heat exchanger for motor vehicles, comprising a bank of tubes through which a gaseous medium flows and around which a liquid coolant flows. The ends of said tubes are received in tube plates and are connected to the same in a material fit. The inventive heat exchanger also comprises a housing jacket which surrounds the bank of tubes and is connected, at the end thereof, to the tube plates. A coolant flows through said housing jacket. The tubes (5), tube plates (3, 7) and housing jacket (2) are produced from a heat-resistant and corrosion-resistant metallic alloy. According to the invention, the housing jacket (2) comprises at least one surrounding expansion flange (4).
Description
- The invention is concerned with a heat exchanger, in particular an exhaust gas heat exchanger for motor vehicles, in accordance with the precharacterizing clause of
patent claim 1, as disclosed by DE-A 199 07 163 of the co-applicant. The invention is furthermore concerned with a method for producing a housing jacket of an exhaust gas heat exchanger in accordance with the precharacterizing clause ofpatent claim 12. - In the case of the exhaust gas heat exchanger disclosed by DE-A 199 07 163, a bank of tubes has the exhaust gas of an internal combustion engine of a motor vehicle flowing through it and is cooled on the outside by a coolant which is taken from the coolant circuit of the internal combustion engine. Exhaust gas heat exchangers of this type, which are also called exhaust gas coolers, are used nowadays in the exhaust gas recirculation system (EGR) to cool the exhaust gas. In the case of the known exhaust gas cooler, the tube ends of the bank of tubes are welded in each case into a tube plate, i.e. are connected fixedly and tightly to these tube plates. The tube plates themselves are welded in turn to a housing jacket which surrounds the bank of tubes. The housing jacket has a coolant inlet opening and a coolant outlet opening and has the coolant flowing through it. During operation of an exhaust gas cooler of this type, the exhaust gas tubes have the hot exhaust gas flowing through them on the inside and have coolant washing around them on the outside. This coolant also washes around the inside of the housing jacket. The exhaust gas tubes therefore reach a substantially higher temperature than the housing jacket, which results in different expansions between the exhaust gas tubes and housing jacket: this leads to thermal stresses, i.e. to compressive stresses in the tubes and tensile stresses in the housing jacket. The tubes press on the tube plates and cause deformation or even damage to the tube/plate connections or the tube plate/housing connections, i.e. the exhaust gas cooler can become leaky.
- In similar exhaust gas coolers in EP-A 0 930 429 a “sliding fit” has therefore already been proposed, i.e. the bank of tubes is arranged in the housing of the exhaust gas cooler by means of a fixed bearing and a movable bearing, i.e. the tubes can expand unimpeded owing to the tube plate being mounted in a sliding manner in the housing. Although thermal stresses are avoided as a result, an increased structural outlay is required for a sliding fit of this type; in addition, there is the risk that if the sliding fit is insufficiently sealed, coolant will pass into the exhaust gas or exhaust gas will pass into the coolant.
- It is therefore the object of the present invention to improve a heat exchanger of the type mentioned at the beginning to the effect that the stresses caused by temperature are compensated for by simple measures, i.e. impermissible loads on the material are avoided.
- This object is achieved for the heat exchanger according to the generic type by the characterizing features of
patent claim 1, i.e. the housing jacket is provided with at least one encircling expansion bead. This bead provides the housing jacket with sufficient elasticity in the longitudinal direction of the tubes, thus making it possible for the housing jacket to expand elastically so as to follow the more pronounced expansion of the exhaust gas tubes without in the process being deformed to an impermissible extent or impairing the weld seam connections between the tubes and plate and plate and housing. In addition, the expansion bead can be produced in a simple manner, i.e. without substantially greater costs, and does not involve any sort of sealing problems. It is also possible—to increase the elasticity or to enlarge the spring deflection—to provide a plurality of extension bead in the manner of an expansion bellows. - According to one advantageous refinement of the invention, the housing jacket is produced integrally, for example from a welded tube, it also being possible for said tube to have a noncircular cross section, for example a rectangular cross section.
- According to a further advantageous refinement of the invention, the expansion bead is produced by “internal high pressure forming” (IHF) of the housing jacket. The IHF, which is also called hydroforming, is a process which is known per se and in which closed housing parts are “inflated” by means of a liquid pressure medium (water). The housings which are to be deformed are placed into dies having the appropriate contour and are then acted upon from the inside by means of a pressure fluid in such a manner that the material of the housing is placed against the contour of the mold.
- According to a further advantageous refinement of the invention, the expansion bead can additionally be produced by axial compression, i.e. after a bead in preliminary form has been produced in a first step by IHF.
- In further advantageous refinements of the invention, dimensions for the housing jacket, in particular the wall thickness thereof, and the dimension of the expansion bead are specified, said dimensions being particularly advantageous and resulting in the desired elasticity of the housing jacket under the loads which occur. In this case, it is also ensured that the material of the housing jacket does not over-expand during production of the expansion bead, but that the designated strength is achieved.
- Finally, one advantageous refinement of the invention provides a method which enables simple and cost-effective production of the expansion bead in the housing jacket of the exhaust gas heat exchanger. According to this method, the expansion bead is produced in two stages, namely first of all by means of internal high pressure forming to give a bead which is in a preliminary form and is not yet in the final form, in particular does not yet have the final height (external dimensions). In a second method step, the housing jacket is compressed axially, thus causing the material of the bead in preliminary form to flow further outward, and the expansion bead then obtains its final form. This two-stage method avoids overloading the material and, at the same time, achieves a defined contour of the expansion bead with a certain elasticity. This method can be used particularly easily for the housing jacket and does not cause any change in the construction of the exhaust gas heat exchanger.
- An exemplary embodiment of the invention is illustrated in the drawing and will be described in greater detail below. In the drawing:
- FIG. 1 shows a perspective illustration of part of the exhaust gas heat exchanger,
- FIG. 2 shows a longitudinal section through the exhaust gas heat exchanger,
- FIG. 3 shows a cross section through the housing jacket of the exhaust gas heat exchanger,
- FIG. 4 shows an illustration of a detail of the expansion bead of the housing jacket,
- FIG. 5 shows a first method step for producing the expansion bead, and
- FIG. 6 shows a second method step for producing the expansion bead.
- FIG. 1 shows, in a perspective illustration, part of an exhaust
gas heat exchanger 1 as used in the form of an exhaust gas cooler for the exhaust gas recirculation system in diesel engines for motor vehicles. The exhaustgas heat exchanger 1, only the front half of which is illustrated, has ahousing jacket 2 and atube plate 3 in which exhaust gas tubes (not illustrated) are accommodated. Anencircling expansion bead 4 is arranged in the front region of thehousing jacket 2, which has approximately a rectangular cross section with beveled corners. This exhaustgas heat exchanger 1 is described in greater detail below, the same reference numbers being used for the same parts. - FIG. 2 shows the exhaust
gas heat exchanger 1 in longitudinal section in a schematic illustration. Thehousing jacket 2 is produced from a closed, i.e. welded tube of stainless steel. A bank of tubes comprising a multiplicity ofexhaust gas tubes 5 is arranged within thishousing jacket 2. Theseexhaust gas tubes 5 are likewise produced from a stainless steel alloy which is, in particular, heat-resistant and corrosion-resistant. The cross section of theexhaust gas tubes 5 is preferably rectangular—as is apparent on the basis of the design of thetube plate 3 in FIG. 1. Theexhaust gas tubes 5 are arranged with respect to one another in such a manner that they leave between themequidistant gaps 6 through which a liquid coolant, i.e. the coolant of the cooling circuit of an internal combustion engine (not illustrated), flows. Theends exhaust gas tubes 5 are held in thetube plate 3 and in afurther tube plate 7 and are welded tightly to thesetube plates tube plates circumferential regions housing jacket 2 to thehousing jacket 2. Thehousing jacket 2, thetube plates exhaust gas tubes 5 therefore delimit a defined space for the flow of the coolant. In its end-side regions housing jacket 2 is somewhat expanded in terms of its cross section, so that it forms a respectiveannular channel equidistant gap 6 between theexhaust gas tubes 5, and passes to the secondannular space 9, from where the coolant leaves the exhaust gas heat exchanger through a coolant outlet (not illustrated). To this extent, this exhaust gas heat exchanger is known, for example through the co-applicant's document which is mentioned at the beginning. The inflow and outflow of the exhaust gas via a diffuser (not illustrated here) or an outlet stub is also revealed in this document. - According to the invention, an
expansion bead 4 is arranged in thehousing jacket 2. This expansion bead 4, which can also be seen in FIG. 1 as the bead which encircles the entire circumference, gives thehousing jacket 2, which is not very elastic in itself, an elasticity in the longitudinal direction of theexhaust gas tubes 5, said elasticity permitting thehousing jacket 2 to follow the more pronounced expansion of theexhaust gas tubes 5. Theexhaust gas tubes 5, which have hot exhaust gas flowing through them on their inside, absorb a higher temperature during operation than thehousing jacket 2, around which the coolant washes, and therefore “grow” to a greater extent than the housing jacket. Compressive stresses are therefore produced in theexhaust gas tubes 5, these stresses continuing into thetube plates housing jacket 2, in which a tensile stress then builds up. This tensile stress is intercepted owing to the elasticity of theexpansion bead 4, so that impermissible deformation or even damage does not occur. - FIG. 3 shows a cross section through the
housing jacket 2, i.e. without the bank of tubes being illustrated. Thehousing jacket 2 has an approximately rectangular cross section with in each case two parallellonger side surfaces shorter side surfaces Longitudinal beads long side surfaces 12/10, 10/13, 13/11 and 11/12. One of these beads can also be seen clearly in FIG. 1—denoted by 14 there. Theexpansion bead 4 is situated somewhat offset to the rear of the plane of projection and surrounds the entire cross section of thehousing jacket 2, i.e. it is of encircling design. - The cross section and the dimensions of this
expansion bead 4 are illustrated in FIG. 4. The wall thickness of the housing is denoted by s and is s≈1.5 mm. Thebead 4 has a width of b≈6 mm and a height of h≈6 mm. The bead is furthermore characterized by two transition radii R1 and R2 which correspond approximately to the wall thickness s, i.e. lie in the region of 1.5 mm. The outermost section of the bead is characterized by an inner radius of R3≈1.5 mm, i.e. approximately of the wall thickness S. These radii ensure that no impermissible expansions or stress peaks occur either during production or during operation. - FIG. 5 shows a first method step for producing the
expansion bead 4 in thehousing jacket 2. Thehousing jacket 2 is illustrated here only by asector 20. Thehousing jacket 2 is placed into twomold halves cavity 23 is provided which is preferably closed to the outside by aninsertable tool 23′. Thehousing jacket 20 is acted upon from the inside, illustrated by an arrow p, by hydroforming or by IHF, so that thehousing jacket 20 is deformed in the region of thecavity 23 to the outside to height h1 and takes on a bead-shapedpreliminary form 24. Thisbead 24 in preliminary form has a width b1 corresponding to thecavity 23 between the twomold halves - FIG. 6 shows the second method step for producing the
expansion bead 4—in this case thehousing jacket 20 is arranged between two axiallymovable molds housing jacket 20 is compressed by means of themolds - The two method steps can be carried out in one mold, in which case the
insertable tool 23′, if the operation is carried out using an insertable tool of this type, has to be removed for the second method step. However, it is also possible to carry out the two method steps in a number of molds or in one follow-on mold.
Claims (13)
1. A heat exchanger, in particular an exhaust gas heat exchanger for motor vehicles, having a bank of tubes through which a gaseous medium flows and around which a liquid coolant flows, and the tubes of which are held by their tube ends in tube plates and are connected thereto with a cohesive material joint, and having a housing jacket which surrounds the bank of tubes and is connected on the end side to the tube plates with a cohesive material joint and through which the coolant flows, tubes (5), tube plates (3, 7) and housing jacket (2) being produced from a heat-resistant and corrosion-resistant metallic alloy, characterized in that the housing jacket (2) has at least one encircling expansion bead (4).
2. The heat exchanger as claimed in claim 1 , characterized in that the housing jacket (2) is of integral design.
3. The heat exchanger as claimed in claim 1 or 2, characterized in that the housing jacket (2) is produced from a welded tube.
4. The heat exchanger as claimed in claim 1 , 2 or 3, characterized in that the housing jacket has a noncircular cross section (10, 11, 12, 13).
5. The heat exchanger as claimed in one of the preceding claims, characterized in that the expansion bead (4) is produced by internal high pressure forming (IHF) of the housing jacket (2).
6. The heat exchanger as claimed in one of the preceding claims, characterized in that the expansion bead (4) is produced by axial compression of the housing jacket (2).
7. The heat exchanger as claimed in one of the preceding claims, characterized in that the housing jacket (2) has a wall thickness of 0.5≦s≦2.5 mm, preferably of s≈1.5 mm.
8. The heat exchanger as claimed in claim 7 , characterized in that the expansion bead (4) has a height h of 2≦h≦10 mm, in particular of h≈6 mm.
9. The heat exchanger as claimed in claim 7 or 8, characterized in that the expansion bead (4) has a width b of 4≦b≦8 mm, in particular of b≈6 mm.
10. The heat exchanger as claimed in one of claims 7, 8 or 9, characterized in that the ratio of width to height, i.e. b: h≈1.
11. The heat exchanger as claimed in one of claims 7 to 10 , characterized in that the bead (4) has a bending radius of R3≈s.
12. A method for producing an expansion bead (4) in a tubular housing jacket (2, 20), in particular having a noncircular cross section, characterized by the following method steps:
provision of a housing jacket (2, 20) which is cut to size,
insertion of the housing jacket (2, 20) into an IHF mold (21, 22, 23) and closing the mold,
filling the mold and the housing jacket (2, 20) with a liquid pressure medium,
deformation of the housing jacket (2, 20) by building up internal high pressure and producing a preliminary form (24) of the bead (first deformation step),
reduction of the internal high pressure and
production of the final form of the expansion bead (4) by axial compression of the housing jacket (2, 20) in a second deformation step.
13. The method as claimed in claim 12 , characterized in that the first method step
production of a preliminary form (24) of the bead, and the second method step
axial compression of the housing jacket (2, 20) are carried out in a mold.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/357,414 US7543471B2 (en) | 2002-02-01 | 2006-02-21 | Waste gas heat exchanger |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10204107.5 | 2002-02-01 | ||
DE10204107.5A DE10204107B4 (en) | 2002-02-01 | 2002-02-01 | Exhaust gas heat exchanger |
PCT/EP2003/000544 WO2003064953A1 (en) | 2002-02-01 | 2003-01-21 | Waste gas heat exchanger |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/000544 A-371-Of-International WO2003064953A1 (en) | 2002-02-01 | 2003-01-21 | Waste gas heat exchanger |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/357,414 Continuation US7543471B2 (en) | 2002-02-01 | 2006-02-21 | Waste gas heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040182547A1 true US20040182547A1 (en) | 2004-09-23 |
Family
ID=27634759
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/476,877 Abandoned US20040182547A1 (en) | 2002-02-01 | 2003-01-21 | Waste gas heat exchanger |
US11/357,414 Expired - Lifetime US7543471B2 (en) | 2002-02-01 | 2006-02-21 | Waste gas heat exchanger |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/357,414 Expired - Lifetime US7543471B2 (en) | 2002-02-01 | 2006-02-21 | Waste gas heat exchanger |
Country Status (7)
Country | Link |
---|---|
US (2) | US20040182547A1 (en) |
EP (1) | EP1474645B1 (en) |
JP (1) | JP4173817B2 (en) |
AT (1) | ATE331199T1 (en) |
DE (2) | DE10204107B4 (en) |
ES (1) | ES2266804T3 (en) |
WO (1) | WO2003064953A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030079869A1 (en) * | 2001-10-26 | 2003-05-01 | Behr Gmbh & Co. | Tube plate for exhaust heat exchanger |
US20050167091A1 (en) * | 2004-01-12 | 2005-08-04 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles, and method for producing same |
US20050263272A1 (en) * | 2002-06-25 | 2005-12-01 | Behr Gmbh & Co. | Exhaust gas heat exchanger and method for the production thereof |
US20060102321A1 (en) * | 2002-07-25 | 2006-05-18 | Shuko Shincho | Heat exchanger |
US20070029076A1 (en) * | 2003-10-17 | 2007-02-08 | Behr Gmbh & Co. Kg | Heat exchanger, in particular for motor vehicles |
US20070187071A1 (en) * | 2006-02-10 | 2007-08-16 | Denso Corporation | Heat recovery apparatus |
US20070199680A1 (en) * | 2004-01-22 | 2007-08-30 | Behr Gmbh & Co. Kg | Frame Part For A Shell-And-Tube Heat Exchanger |
US20080053646A1 (en) * | 2006-09-05 | 2008-03-06 | Simon Martin | Thermal expansion feature for an exhaust gas cooler |
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Publication number | Priority date | Publication date | Assignee | Title |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
US4364252A (en) * | 1980-04-12 | 1982-12-21 | Osaka Rasenkan Kogyo Kabushiki Kaisha | Method for the manufacture of diaphragm bellows |
US4721069A (en) * | 1987-06-19 | 1988-01-26 | The Babcock & Wilcox Company | Termination for boiler casing expansion element |
US4748836A (en) * | 1986-03-10 | 1988-06-07 | Ultra-Centrifuge Nederland N.V. | Method of forming a ridge in a tube member |
US5848676A (en) * | 1995-04-28 | 1998-12-15 | Fichtel & Sachs Ag | Shock absorbing strut with an aluminum container for a motor vehicle |
US6086110A (en) * | 1997-04-10 | 2000-07-11 | Senior Engineering Investments Ag | Vibration decoupling connector for exhaust systems |
US20010006102A1 (en) * | 1999-12-28 | 2001-07-05 | Takeshi Nishimura | Shell and tube type heat exchanger |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6102A (en) * | 1849-02-06 | Improvement in coloring bricks | ||
US910192A (en) * | 1906-04-27 | 1909-01-19 | Philippe Jules Grouvelle | Tube. |
US1955006A (en) * | 1932-12-02 | 1934-04-17 | Standard Oil Dev Co | Lubricated baffle for heat exchangers |
CH378353A (en) | 1960-09-01 | 1964-06-15 | Urech Karl | Heat exchanger with plate-shaped exchange elements |
GB1585045A (en) * | 1977-06-28 | 1981-02-18 | Westinghouse Electric Corp | Heat exchanger with double walled tubes |
JPS61223496A (en) | 1985-03-28 | 1986-10-04 | Mitsubishi Electric Corp | Air preheater |
FR2690235A1 (en) * | 1992-04-16 | 1993-10-22 | Valeo Thermique Moteur Sa | Tubular box wall of fluid and method for the manufacture of a heat exchanger by driving of circulation tubes. |
DE4441192C2 (en) * | 1994-11-18 | 1998-05-20 | Schnupp Gmbh & Co Hydraulik Kg | Process for hydroforming |
DE29612361U1 (en) | 1996-07-19 | 1996-08-29 | Wahler Gmbh & Co Gustav | Cooler for gaseous or liquid media, in particular exhaust gas cooler, for an internal combustion engine |
DE19737273A1 (en) | 1997-08-27 | 1999-03-04 | Behr Gmbh & Co | Heat exchanger with two parallel-running collection tubes |
AT411546B (en) | 1998-01-15 | 2004-02-25 | Man Steyr Ag | LIQUID-COOLED INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS RECIRCULATING DEVICE AND DEVICE FOR COOLING RECYCLED EXHAUST |
JP4130512B2 (en) | 1998-04-24 | 2008-08-06 | ベール ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー | Heat exchanger |
DE19907163C2 (en) * | 1998-04-24 | 2003-08-14 | Behr Gmbh & Co | Heat exchanger, in particular exhaust gas heat exchanger |
JP2001272185A (en) | 2000-03-27 | 2001-10-05 | Calsonic Kansei Corp | Egr gas cooling device and manufacturing method therefor |
DE10020492A1 (en) * | 2000-04-26 | 2001-10-31 | Eberspaecher J Gmbh & Co | Exhaust device of an exhaust system, in particular a motor vehicle catalytic converter in modular design |
DE10049048C1 (en) * | 2000-09-29 | 2002-01-03 | Etc Bleistahl Gmbh & Co Kg | Method, for shaping to shape end of hollow shaft, involves positioning element in hollow shaft, using medium to generate pressure and expand shaft and die to push element to connect it to shaft |
-
2002
- 2002-02-01 DE DE10204107.5A patent/DE10204107B4/en not_active Expired - Fee Related
-
2003
- 2003-01-21 WO PCT/EP2003/000544 patent/WO2003064953A1/en active IP Right Grant
- 2003-01-21 AT AT03717179T patent/ATE331199T1/en active
- 2003-01-21 EP EP03717179A patent/EP1474645B1/en not_active Expired - Lifetime
- 2003-01-21 DE DE50303945T patent/DE50303945D1/en not_active Expired - Lifetime
- 2003-01-21 US US10/476,877 patent/US20040182547A1/en not_active Abandoned
- 2003-01-21 ES ES03717179T patent/ES2266804T3/en not_active Expired - Lifetime
- 2003-01-21 JP JP2003564506A patent/JP4173817B2/en not_active Expired - Fee Related
-
2006
- 2006-02-21 US US11/357,414 patent/US7543471B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2063490A (en) * | 1934-12-04 | 1936-12-08 | Davis Engineering Corp | Method of making an expansion joint |
US4364252A (en) * | 1980-04-12 | 1982-12-21 | Osaka Rasenkan Kogyo Kabushiki Kaisha | Method for the manufacture of diaphragm bellows |
US4748836A (en) * | 1986-03-10 | 1988-06-07 | Ultra-Centrifuge Nederland N.V. | Method of forming a ridge in a tube member |
US4721069A (en) * | 1987-06-19 | 1988-01-26 | The Babcock & Wilcox Company | Termination for boiler casing expansion element |
US5848676A (en) * | 1995-04-28 | 1998-12-15 | Fichtel & Sachs Ag | Shock absorbing strut with an aluminum container for a motor vehicle |
US6086110A (en) * | 1997-04-10 | 2000-07-11 | Senior Engineering Investments Ag | Vibration decoupling connector for exhaust systems |
US20010006102A1 (en) * | 1999-12-28 | 2001-07-05 | Takeshi Nishimura | Shell and tube type heat exchanger |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030079869A1 (en) * | 2001-10-26 | 2003-05-01 | Behr Gmbh & Co. | Tube plate for exhaust heat exchanger |
US7367387B2 (en) * | 2001-10-26 | 2008-05-06 | Behr Gmbh & Co. | Tube plate for exhaust heat exchanger |
US20050263272A1 (en) * | 2002-06-25 | 2005-12-01 | Behr Gmbh & Co. | Exhaust gas heat exchanger and method for the production thereof |
US7278473B2 (en) * | 2002-06-25 | 2007-10-09 | Behr Gmbh & Co. | Exhaust gas heat exchanger and method for the production thereof |
US7267160B2 (en) * | 2002-07-25 | 2007-09-11 | T.Rad Co., Ltd. | Heat exchanger |
US20060102321A1 (en) * | 2002-07-25 | 2006-05-18 | Shuko Shincho | Heat exchanger |
US7896065B2 (en) | 2003-10-02 | 2011-03-01 | Behr Gmbh & Co. Kg | Charge-air cooler for motor vehicles |
US20070029076A1 (en) * | 2003-10-17 | 2007-02-08 | Behr Gmbh & Co. Kg | Heat exchanger, in particular for motor vehicles |
US7048042B2 (en) | 2004-01-12 | 2006-05-23 | Behr Gmgh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles, and method for producing same |
US20050167091A1 (en) * | 2004-01-12 | 2005-08-04 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles, and method for producing same |
US20070199680A1 (en) * | 2004-01-22 | 2007-08-30 | Behr Gmbh & Co. Kg | Frame Part For A Shell-And-Tube Heat Exchanger |
US20080223024A1 (en) * | 2005-08-27 | 2008-09-18 | Behr Gmbh & Co. Kg | Exhaust Gas Heat Exchanger |
US7721792B2 (en) * | 2005-08-27 | 2010-05-25 | Behr Gmbh & Co. Kg | Exhaust gas heat exchanger |
US20070187071A1 (en) * | 2006-02-10 | 2007-08-16 | Denso Corporation | Heat recovery apparatus |
US20080053646A1 (en) * | 2006-09-05 | 2008-03-06 | Simon Martin | Thermal expansion feature for an exhaust gas cooler |
EP1978323A2 (en) | 2007-04-05 | 2008-10-08 | Honeywell International Inc. | Heat exchanger with telescoping expansion joint |
US9067289B2 (en) | 2007-04-05 | 2015-06-30 | Honeywell International Inc. | Heat exchanger with telescoping expansion joint |
EP1978323A3 (en) * | 2007-04-05 | 2013-07-31 | Honeywell International Inc. | Heat exchanger with telescoping expansion joint |
US9243849B2 (en) | 2009-03-12 | 2016-01-26 | Mahle International Gmbh | Stacked plate heat exchanger with end plate expansion slots |
US20100258095A1 (en) * | 2009-03-13 | 2010-10-14 | Christian Saumweber | Heat exchanger |
EP2236969A3 (en) * | 2009-03-13 | 2014-04-02 | Behr GmbH & Co. KG | Plate Heat exchanger for high exposure from thermal cycling |
EP2236969A2 (en) * | 2009-03-13 | 2010-10-06 | Behr GmbH & Co. KG | Plate Heat exchanger for high exposure from thermal cycling |
US20130340980A1 (en) * | 2010-12-10 | 2013-12-26 | Perkins Engines Company Limited | Improvements in or relating to gas coolers for internal combustion engines |
WO2016010266A1 (en) * | 2014-07-18 | 2016-01-21 | 한온시스템 주식회사 | Automobile exhaust heat storage device |
US10309364B2 (en) | 2014-07-18 | 2019-06-04 | Hanon Systems | Exhaust heat regenerator for vehicle |
US20170307262A1 (en) * | 2014-10-08 | 2017-10-26 | Mahle International Gmbh | Method for mounting a heat exchanger device and a heat exchanger device |
CN106969546A (en) * | 2015-10-28 | 2017-07-21 | 博格华纳排放系统西班牙有限责任公司 | Evaporator |
US20170122677A1 (en) * | 2015-10-28 | 2017-05-04 | Borgwarner Emissions Systems Spain, S.L.U. | Evaporator |
EP3163243A1 (en) * | 2015-10-28 | 2017-05-03 | Borgwarner Emissions Systems Spain, S.L.U. | Evaporator |
CN109538382A (en) * | 2017-09-22 | 2019-03-29 | 翰昂汽车零部件有限公司 | Gaseous effluent and exhaust gas with gaseous effluent return guiding systems |
KR20190034075A (en) * | 2017-09-22 | 2019-04-01 | 한온시스템 주식회사 | Exhaust gas cooler and exhaust gas recirculation system with an exhaust gas cooler |
KR102010474B1 (en) * | 2017-09-22 | 2019-08-13 | 한온시스템 주식회사 | Exhaust gas cooler and exhaust gas recirculation system with an exhaust gas cooler |
US10697405B2 (en) * | 2017-09-22 | 2020-06-30 | Hanon Systems | Exhaust gas cooler and exhaust gas recirculation system with an exhaust gas cooler |
Also Published As
Publication number | Publication date |
---|---|
ES2266804T3 (en) | 2007-03-01 |
US7543471B2 (en) | 2009-06-09 |
EP1474645B1 (en) | 2006-06-21 |
ATE331199T1 (en) | 2006-07-15 |
DE50303945D1 (en) | 2006-08-03 |
DE10204107A1 (en) | 2003-09-04 |
US20060201653A1 (en) | 2006-09-14 |
JP2005516177A (en) | 2005-06-02 |
WO2003064953A1 (en) | 2003-08-07 |
EP1474645A1 (en) | 2004-11-10 |
JP4173817B2 (en) | 2008-10-29 |
DE10204107B4 (en) | 2018-12-13 |
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