EP1589214A2 - Abgasrückführsystem für eine Verbrennungskraftmaschine - Google Patents
Abgasrückführsystem für eine Verbrennungskraftmaschine Download PDFInfo
- Publication number
- EP1589214A2 EP1589214A2 EP05001654A EP05001654A EP1589214A2 EP 1589214 A2 EP1589214 A2 EP 1589214A2 EP 05001654 A EP05001654 A EP 05001654A EP 05001654 A EP05001654 A EP 05001654A EP 1589214 A2 EP1589214 A2 EP 1589214A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- gas recirculation
- housing
- bypass
- heat exchanger
- 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.)
- Granted
Links
- 239000002826 coolant Substances 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000004512 die casting Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
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- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
- F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
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- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- 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
- F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
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- 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
- 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
- F02M26/52—Systems for actuating EGR valves
- F02M26/55—Systems for actuating EGR valves using vacuum actuators
- F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
- F02M26/57—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves using electronic means, e.g. electromagnetic valves
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- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
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- 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
-
- 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
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
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- 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
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
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- 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
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
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- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
- F28F2009/224—Longitudinal partitions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction
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- 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
- F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
Definitions
- the invention relates to an exhaust gas recirculation system for an internal combustion engine with an exhaust gas inlet, an exhaust gas outlet and an exhaust gas cooling device, the one Heat exchange unit, which is flowed through by a coolant, and with a bypass channel through which the heat exchanger unit can be bypassed and in the a bypass flap is arranged.
- the exhaust gas is via an exhaust gas recirculation passage led from the exhaust manifold back to the intake manifold of the internal combustion engine.
- the regulation of the exhaust gas flow takes place via an exhaust gas recirculation valve, which is arranged in the exhaust gas recirculation channel.
- exhaust gas recirculation passages it is known to arrange cooling devices in the exhaust gas recirculation passages, so that the exhaust gas is cooled back into the intake manifold, whereby the NO x emissions can be reduced. Since at the start of the engine the fastest possible heating of the coolant but also of a catalytic converter is desired, exhaust gas recirculation systems have been implemented in which the exhaust gas cooling device can be bypassed via a bypass channel, whereby the bypass channel is controlled by a bypass flap or a bypass valve.
- DE 198 41 927 A1 discloses a device for returning an exhaust gas stream described to the intake manifold of an internal combustion engine, wherein the exhaust gas cooling device executed with the bypass channel as a unit, wherein the bypass flap disposed between an exhaust inlet and an exhaust outlet of the cooling device is, so that the way through the radiator on the bypass channel are bypassed can.
- the exhaust gas recirculation channel In the continuing area of the exhaust gas recirculation channel that is the amount of exhaust gas regulating exhaust gas recirculation valve arranged.
- EP 0 916 837 B1 discloses a device for exhaust gas recirculation for an internal combustion engine described in which the exhaust gas cooling device and the exhaust gas recirculation valve are designed as a structural unit, wherein an actuating element of the valve is cooled by the flowing coolant. This should be the thermal load of the actuating element can be reduced. A bypass of the exhaust gas cooler over a Bypass channel is not provided.
- DE 197 40 998 A1 describes an exhaust gas recirculation system for an internal combustion engine in which an exhaust gas recirculation valve is fastened to a connection base, which in turn is fastened to a cooling device which is arranged on the intake pipe.
- a cooling device which is arranged on the intake pipe.
- the exhaust gas recirculation system a housing in which the heat exchanger unit, the bypass flap and a housing part the exhaust gas recirculation valve, in which at least the valve seat is arranged, formed are, wherein the valve seat is cooled by the coolant, and that the exhaust gas recirculation valve the exhaust gas cooling device with the heat exchanger unit and the bypass channel form a structural unit with the bypass flap.
- valve seat of the exhaust gas recirculation valve between the bypass channel or the heat exchanger unit and the Exhaust outlet arranged, whereby the thermal load in particular of Control element of the exhaust gas recirculation valve in comparison to versions in which the exhaust gas recirculation valve is arranged in front of the exhaust gas cooler, is reduced.
- the forms can be chosen so that the four housing shells in cost Alloy die casting process can be produced.
- the first housing shell forms the exhaust gas inlet, a lower part of the exhaust gas cooling device and a lower outer wall of the Bypass
- the second housing shell an upper part of the exhaust gas cooling device with a coolant inlet and a coolant outlet and an upper outer wall of the Bypass
- the third housing shell a lower part of the heat exchanger unit and the housing of the exhaust gas recirculation valve, the exhaust gas outlet and a lower inner wall the bypass channel and a lower part of a partition, in which the Bypass flap is arranged and having a lower bearing point of the bypass valve and the fourth housing shell an upper part of the heat exchanger unit and the Housing of the exhaust gas recirculation valve, an upper inner wall of the bypass channel as well an upper part of an intermediate wall, in which the bypass flap is arranged and which has an upper bearing point of the bypass flap.
- the exhaust gas recirculation valve is as Plug valve executed, which is inserted into the housing and its valve seat flows around the cooling of the coolant for cooling.
- the design of the exhaust gas recirculation valve as a plug valve simplifies the assembly during the flow around the Valve seat with coolant the cooling effect on the housing respectively optimizes the valve seat of the exhaust gas recirculation valve, so that adhesions of the exhaust gas recirculation valve reliably avoided.
- the first housing shell forms the exhaust gas inlet, the exhaust gas outlet, a lower part of the exhaust gas cooling device and the bypass channel and the housing of the exhaust gas recirculation valve
- the second housing shell Upper part of the exhaust gas cooling device with a coolant inlet and a coolant outlet and the bypass channel
- the third housing shell a lower part of the heat exchanger unit a lower part of an intermediate wall, in which the bypass flap is arranged is and which has a lower bearing point of the bypass valve
- the fourth housing shell an upper part of the heat exchanger unit and an upper part an intermediate wall, in which the bypass flap is arranged and the upper bearing point the bypass flap has.
- the exhaust gas recirculation valve is in turn designed as a plug valve, which is inserted into the housing and its Valve seat for cooling immediately adjacent to one between the first and third as well formed between the second and fourth housing shell coolant jacket is arranged.
- bypass flap is at least indirectly over a temperature-sensitive bimetallic spring controlled. This can be additional Space can be saved as there are no additional control devices for the bypass flap required are.
- the bimetallic spring of coolant flows around, so that the bypass flap depending on the respective coolant temperature is pivoted. This means that when still cold internal combustion engine and thus not desired cooling of the exhaust gas, the bimetallic spring so is arranged, that the bypass flap is opened, while with sufficient warming of the coolant, the bimetallic spring for a closure of the bypass channel provides.
- the housing shells each at their bearing surfaces to the other housing shell grooves, in the corresponding Webs of the other housing shell engage and the connection between the superposed housing shells is via an adhesive connection produced.
- a particularly good efficiency of the cooling device is achieved when the Coolant jacket in the region of the cooling device in cross section the entire circumference the heat exchanger unit surrounds, as an energetically favorable position of Coolant jacket is given to the atmosphere.
- the webs and the grooves over which the heat exchanger unit forming housing shells are connected in the region of the coolant jacket are arranged, wherein between the exhaust gas flowed through the area Heat exchanger unit and the webs and grooves on both housing shells grooves are formed, which form an air space.
- This airspace is used for isolation towards the hot exhaust gas, so that a reliable adhesive bond as well is feasible at this point.
- an exhaust gas recirculation system is thus created, which has an extremely low space requirement and a low weight, wherein at the same time in particular the function of the exhaust gas recirculation valve by the Cooling is ensured and the number of components compared to known designs is further reduced. Furthermore, all housing parts are inexpensive Diecasting produced and optimally matched.
- Figure 1 shows a sectional view of a frontal view of an inventive first exhaust gas recirculation system, wherein the cutting plane in the region of a bypass channel is arranged and the viewing direction of a cooling device.
- Figure 2 shows a representation corresponding to Figure 1 for an alternative inventive Exhaust gas recirculation system.
- Figure 3 shows a sectional view of a side view of the invention Exhaust gas recirculation system of Figure 2 wherein the viewing direction to the exhaust gas inlet is and the cutting plane lies in front of the bypass flap.
- FIG. 4 shows a top view of the exhaust gas recirculation system according to the invention Figure 1, wherein in the illustration upper housing parts in the region of the heat exchanger are removed.
- FIG. 5 again shows a frontal view of an exhaust gas recirculation system according to the invention in a sectional view, wherein the sectional plane in the region of a Cooling device is arranged.
- FIG. 1 The structure of a first embodiment of an exhaust gas recirculation system according to the invention is largely clear from Figure 1. It can be seen that a housing 1 of four housing shells 2, 3, 4, 5 is constructed, which form all functional parts or at least record.
- the first housing shell 2 forms an exhaust gas inlet 6 and a lower Outside wall 7 of a bypass channel 8. Furthermore, this housing shell forms the second a lower part 9 of an exhaust gas cooling device 10, as shown in Figures 3-5 is.
- This outer housing shell 2 is replaced by a second housing shell. 3 largely closed, which has an inlet channel 11 and an outlet 12th for the coolant. In addition, it forms an upper part 13 of the exhaust gas cooling device 10 and an upper outer wall 14 of the bypass channel 8.
- This housing shell 3 is on the housing shell 2 with the interposition of the housing shells. 4 and 5 attached via an adhesive bond.
- the housing shells 4 and 5 together form a heat exchanger unit 15, which in particular can be seen in Figures 3 to 5.
- the lower inner housing shell forms 4 a lower part 16 of the heat exchanger unit 15 and a lower inner wall 17 of the bypass channel 8 and forms in an extension of these surfaces Lower part 18 of a housing of an exhaust gas recirculation valve 19.
- the housing shell. 5 in turn forms a corresponding upper part 20 of the heat exchanger 15 and a upper inner wall 21 of the bypass channel 8 and an upper part 22 of the housing of the Exhaust gas recirculation valve 19.
- the lower part 18 and the upper part 22 accordingly form in the present embodiment together a receptacle for the exhaust gas recirculation valve 19, which designed as a plug valve.
- This plug valve 19 is a generic spring-loaded diaphragm valve, which is actuated via a vacuum connection 23 becomes.
- a membrane 24 is in a known manner between a plug housing part 25 and a cover 26 of the exhaust gas recirculation valve 19 is clamped and is biased by a coil spring 27 in the closing direction, wherein the Spring 27 is supported on its first side against the lid 26 and on the other Side against a arranged on the diaphragm 24 plate 28 is supported.
- valve closure member 30 is arranged, which in a known manner with a Valve seat 31 corresponds, in the formed by the housing shells 4 and 5 Housing lower part 18 and upper housing part 22 is inserted.
- Valve seat 31 corresponds, in the formed by the housing shells 4 and 5 Housing lower part 18 and upper housing part 22 is inserted.
- a bypass flap 33 is arranged, which in one in the housing shell 5 trained upper bearing 34 and in a lower housing shell 4 trained lower bearing 35 is mounted.
- a lower part 36 of a partition and an upper part 37th formed the intermediate wall, wherein in the formed by the two halves 36,37 Partial wall formed by the bypass flap 33 controlled opening is.
- the bypass door 33 in the lower bearing 35 only is mounted on a shaft journal 38, the shaft 39 of the bypass valve 33 extends through the upper bearing 34 and is there connected to a lever 40, which in turn is in operative connection with a bimetallic spring 41.
- This bimetallic spring 41 forms an actuator of the bypass flap 33 and is in a between the housing shell 3 and the housing shell 5 formed coolant jacket 42 arranged so that a circuit of a bypass valve body 43 of the bypass door 33 of the Temperature of the coolant flow is dependent.
- a seal 46 is arranged is, over which the housing 18, 22 relative to the plug housing part 25, in the seal 46 is arranged in a groove 47 is sealed from atmosphere becomes.
- An additional sealing ring 48 is arranged in a groove 49 which on the upper and lower outer housing shell 2, 3 is formed and for a Seal between the out, lying housing shells 2, 3 and the lower part 18 and upper part 22 of the valve housing relative to the atmosphere provides.
- This portion of the housing shells 2 and 3 is formed so that it is around the Valve seat 31 of the exhaust gas recirculation valve 19 protrudes so that it is surrounded by coolant is, which between the housing parts 2, 4 or the housing parts 3, 5 flows and is part of the coolant jacket 42.
- the embodiment according to FIG. 2 differs from the embodiment according to Figure 1 in that a housing 50 of the exhaust gas recirculation valve 19 completely is formed on the lower housing shell 2 and thus the function of the housing parts 18 and 22 of the first embodiment met.
- the exhaust outlet is also 32 part of the housing shell 22.
- the bypass channel 8 is not flowed around by coolant, but its lower part 51 and be Upper part 52 is formed directly through the housing shells 2, 3.
- the upper housing shell 5 is so executed that it forms an additional space 53 in the area above the Bypass valve 33 is disposed and with the underlying coolant jacket 42nd connected is.
- the coolant jacket 42 is from the side of the heat exchanger 15 is led up to the housing 50 of the exhaust gas recirculation valve 19, which can be seen in Figure 3, wherein the housing 50, since it is in direct contact with the coolant is, for a good heat transfer in the region of the valve seat 31 ensures that it is cooled by the coolant.
- the others in comparison for the execution according to Figure 1 functionally identical parts are in Figure 2 with the same Reference numerals marked.
- FIGS. 3 to 5 show further views of the embodiments according to the invention the exhaust gas recirculation system and in particular the heat exchanger unit 15, shown. So it becomes clear that between the outer housing shells 2 and 3 and the inner housing shells 4 and 5, the coolant jacket 42 is formed.
- the heat exchanger unit 15 is, apart from the outer wall of the coolant jacket 42, formed by the housing shells 4, 5, at which ribs 54 for an improved Heat transfer are formed, which in the assembled state of the housing shells 4 and 5 face each other.
- Each centrally arranged in cross section Ribs 55 have such a length that they are in the middle of each other which ensures that the exhaust gas flow with the bypass flap closed must flow through the entire heat exchanger unit 15 and only in the rear Area 56 of the heat exchanger unit 15 is deflected by 180 degrees, so to get to the exhaust outlet.
- Coolant jacket 42 either in the same direction or opposite, must flow are in turn, on the housing shells 2, 3 in cross section in the middle, ie in extension formed the ribs 55, grooves 44, in which webs 45 of the housing shells 4, 5th intervention. So that the coolant flow from the coolant inlet 11 to the coolant outlet 12, he must thus on the rear portion 56 of the heat exchanger unit 15 flow where the formed by the webs 44 and grooves 45 vertical Partition is no longer formed.
- the engine By introducing this hot exhaust gas into the intake manifold, the engine becomes fast heated, so that also heats the coolant of the engine faster flows into the coolant jacket 42. Is a switching temperature of the coolant and thus reaches the bimetallic spring 41, the bypass flap 33 is actuated and the Opened between the chambers 57 and 58, so that no more exhaust gas can flow through the bypass channel 8. Instead, then the exhaust gas flows between the ribs 54 of the heat exchanger unit 15 and is in the rear Area 56 deflected by 180 degrees, so that the exhaust gas stream cooled in the second Chamber 58 passes, from where the exhaust gas in turn via the exhaust gas recirculation valve 19 can be performed to the intake manifold.
- the cooling of the exhaust gas takes place via a heat transfer between the flowing exhaust gas and the ribs 54 of the Heat exchanger unit 15, which by the surrounding coolant jacket 42 flowing coolant to be cooled.
- the coolant jacket 42 is over the Coolant inlet 11 and the coolant outlet 12 usually with the coolant circuit connected to the internal combustion engine in a known manner.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims (12)
- Abgasrückführsystem für eine Verbrennungskraftmaschine mit einem Abgaseinlaß und einem Abgasauslaß und einer Abgaskühlvorrichtung, die eine Wärmetauschereinheit aufweist, die von einem Kühlmittel durchströmt ist, sowie mit einem Bypasskanal, über den die Wärmetauschereinheit umgehbar ist und in dem eine Bypassklappe angeordnet ist, dadurch gekennzeichnet, daß das Abgasrückführsystem ein Gehäuse (2, 3, 4, 5) aufweist, in dem die Wärmetauschereinheit (15), die Bypassklappe (33) und ein Gehäuseteil (18, 22, 50) des Abgasrückführventils (19), in dem zumindest ein Ventilsitz (31) angeordnet ist, ausgebildet sind, wobei der Ventilsitz (31) durch das Kühlmittel gekühlt ist, und dass das Abgasrückführventil (19) die Abgaskühlvorrichtung (10) mit der Wärmetauschereinheit (15) und der Bypasskanal (8) mit der Bypassklappe (33) eine Baueinheit bilden.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Ventilsitz (31) des Abgasrückführventils (19) zwischen dem Bypasskanal (8) beziehungsweise der Wärmetauschereinheit (15) und dem Abgasauslaß (32) angeordnet ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß das Gehäuse (1) des Abgasrückführsystems und die Wärmetauschereinheit (15) aus insgesamt vier Gehäuseschalen (2, 3, 4, 5), insbesondere Druckgussschalen, aufgebaut sind.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die erste Gehäuseschale (2) den Abgaseinlaß (6), ein Unterteil (9) der Abgaskühlvorrichtung (10) sowie eine untere Außenwand (7) des Bypasskanals (8) bildet, die zweite Gehäuseschale (3) ein Oberteil (13) der Abgaskühlvorrichtung (10) mit einem Kühlmitteleinlass (11) und einem Kühlmittelauslass (12) und eine obere Außenwand (14) des Bypasskanals (8) bildet, die dritte Gehäuseschale (4) ein Unterteil (16) der Wärmetauschereinheit (15) und des Gehäuses (18) des Abgasrückführventils (19), den Abgasauslass (32) und eine untere Innenwand (17) des Bypasskanals (8) sowie einen unteren Teil (36) einer Zwischenwand, in der die Bypassklappe (33) angeordnet ist und die eine untere Lagerstelle (35) der Bypassklappe (33) aufweist, bildet und die vierte Gehäuseschale (5) ein Oberteil (20, 22) der Wärmetauschereinheit (15) und des Gehäuses des Abgasrückführventils (19), eine obere Innenwand (21) des Bypasskanals (8) sowie einen oberen Teil (37) einer Zwischenwand, in der die Bypassklappe (33) angeordnet ist und die eine obere Lagerstelle (34) der Bypassklappe (33) aufweist, bildet.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach Anspruch 4, dadurch gekennzeichnet, daß das Abgasrückführventil (19) als Steckventil ausgeführt ist, welches in das Gehäuse (18, 22) eingesetzt ist und dessen Ventilsitz (31) zur Kühlung vom Kühlmittel umströmt ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach Anspruch 3, dadurch gekennzeichnet, daß die erste Gehäuseschale (2) den Abgaseinlaß (6), den Abgasauslaß (32), ein Unterteil (51) der Abgaskühlvorrichtung (10) und des Bypasskanals (8) sowie ein Gehäuse (50) des Abgasrückführventils (19) bildet, die zweite Gehäuseschale (3) ein Oberteil (52) der Abgaskühlvorrichtung (10) mit einem Kühlmitteleinlaß (11) und einem Kühlmittelauslaß (12) und des Bypasskanals (8) bildet, die dritte Gehäuseschale (4) ein Unterteil (16) der Wärmetauschereinheit (15), einen unteren Teil (36) einer Zwischenwand, in der die Bypassklappe (33) angeordnet ist, und die eine untere Lagerstelle (35) der Bypassklappe (33) aufweist, bildet und die vierte Gehäuseschale (5) ein Oberteil (20) der Wärmetauschereinheit (15) und einen oberen Teil (37) einer Zwischenwand, in der die Bypassklappe (33) angeordnet ist und die eine obere Lagerstelle (34) der Bypassklappe (33) aufweist, bildet.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach Anspruch 6, dadurch gekennzeichnet, daß das Abgasrückführventil (19) als Steckventil ausgeführt ist, welches in das Gehäuse (50) eingesetzt ist und dessen Ventilsitz (31) zur Kühlung unmittelbar neben einem zwischen der ersten und dritten sowie zwischen der zweiten und vierten Gehäuseschale (2, 4; 3, 5) ausgebildeten Kühlmittelmantel (42) angeordnet ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Bypassklappe (33) zumindest indirekt über eine temperaturempfindliche Bimetallfeder (41) gesteuert ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach Anspruch 8, dadurch gekennzeichnet, daß die Bimetallfeder (41) von Kühlmittel umströmt ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Gehäuseschalen (2, 3, 4, 5) jeweils an ihren Auflageflächen zur anderen Gehäuseschale (2, 3, 4, 5) Nuten (44) aufweisen, in die korrespondierende Stege (45) der jeweils anderen Gehäuseschale (2, 3, 4, 5) eingreifen und die Verbindung über eine Klebeverbindung hergestellt ist.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kühlmittelmantel (42) im Bereich der Kühleinrichtung (10) im Querschnitt den gesamten Umfang der Wärmetauschereinheit (15) umgibt.
- Abgasrückführsystem für eine Verbrennungskraftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Stege (45) und die Nuten (44), über welche die Gehäuseschalen (4, 5) verbunden sind im Bereich des Kühlmittelmantels (42) angeordnet sind, wobei zwischen dem abgasdurchströmten Bereich der Wärmetauschereinheit (15) und den Stegen (45) und Nuten (44) an beiden Gehäuseschalen (4, 5) Nuten ausgebildet sind, welche einen Luftraum bilden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004019554.4A DE102004019554C5 (de) | 2004-04-22 | 2004-04-22 | Abgasrückführsystem für eine Verbrennungskraftmaschine |
DE102004019554 | 2004-04-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1589214A2 true EP1589214A2 (de) | 2005-10-26 |
EP1589214A3 EP1589214A3 (de) | 2010-09-29 |
EP1589214B1 EP1589214B1 (de) | 2011-07-06 |
Family
ID=34933469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05001654A Active EP1589214B1 (de) | 2004-04-22 | 2005-01-27 | Abgasrückführsystem für eine Verbrennungskraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US7077114B2 (de) |
EP (1) | EP1589214B1 (de) |
AT (1) | ATE515634T1 (de) |
DE (1) | DE102004019554C5 (de) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2006082049A1 (de) * | 2005-02-03 | 2006-08-10 | Behr Gmbh & Co. Kg | Abgaswärmeübertrager, insbesondere für kraftfahrzeuge |
EP1707790A1 (de) * | 2005-03-31 | 2006-10-04 | Cooper-Standard Automotive (Deutschland) GmbH | Abgasrückführsystem |
WO2007062939A1 (de) * | 2005-12-02 | 2007-06-07 | Pierburg Gmbh | Kühlvorrichtung für eine verbrennungskraftmaschine |
EP2413080A3 (de) * | 2005-12-02 | 2013-05-29 | Pierburg GmbH | Kühlvorrichtung für eine Verbrennungskraftmaschine |
WO2007098854A1 (de) * | 2006-02-24 | 2007-09-07 | Behr Gmbh & Co. Kg | Ventil zur regelung eines abgasstroms eines verbrennungsmotors, wärmetäuscher zur abgaskühlung, system mit zumindest einem ventil und mit zumindest einem wärmetäuscher |
FR2907889A1 (fr) * | 2006-10-27 | 2008-05-02 | Valeo Sys Controle Moteur Sas | Vanne de regulation reliee a un echangeur par un pont thermique et dispositif d'echange thermique correspondant. |
FR2907885A1 (fr) * | 2006-10-27 | 2008-05-02 | Valeo Sys Controle Moteur Sas | Echangeur thermique comportant un corps extrude |
WO2008053090A1 (fr) * | 2006-10-27 | 2008-05-08 | Valeo Systemes De Controle Moteur | Échangeur thermique comportant un corps extrudé |
WO2008053093A1 (fr) * | 2006-10-27 | 2008-05-08 | Valeo Systemes De Controle Moteur | Vanne de régulation reliée à un échangeur par un pont thermique et dispositif d'échange thermique correspondant |
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FR2907890A1 (fr) * | 2006-10-27 | 2008-05-02 | Valeo Sys Controle Moteur Sas | Ensemble de vanne egr-by pass et dispositif d'echange thermique equipe d'un tel ensemble de vanne. |
WO2008058737A1 (de) * | 2006-11-15 | 2008-05-22 | Behr Gmbh & Co. Kg | Abgasrückführeinrichtung |
DE102006054225B4 (de) | 2006-11-15 | 2019-06-19 | Mahle International Gmbh | Abgasrückführeinrichtung |
EP1925899A3 (de) * | 2006-11-17 | 2010-11-17 | Valeo Termico S.A. | Gaswärmetauscher, insbesondere für die Abgase eines Motors |
EP1925899A2 (de) * | 2006-11-17 | 2008-05-28 | Valeo Termico S.A. | Gaswärmetauscher, insbesondere für die Abgase eines Motors |
WO2008114005A3 (en) * | 2007-03-17 | 2008-11-13 | Senior Uk Ltd | U-shaped cooler |
FR2914701A1 (fr) * | 2007-04-05 | 2008-10-10 | Inst Francais Du Petrole | Installation pour le refroidissement des gaz d'echappement recircules de moteur a combustion interne et de la vanne de controle de la circulation de ces gaz. |
WO2008142263A3 (fr) * | 2007-04-05 | 2009-02-19 | Inst Francais Du Petrole | Installation pour le refroidissement des gaz d'echappement recircules de moteur a combustion interne et de la vanne de controle de la circulation de ces gaz |
WO2008142263A2 (fr) * | 2007-04-05 | 2008-11-27 | Ifp | Installation pour le refroidissement des gaz d'echappement recircules de moteur a combustion interne et de la vanne de controle de la circulation de ces gaz |
EP2188582A1 (de) * | 2007-09-11 | 2010-05-26 | Behr GmbH & Co. KG | Wärmetauscher, insbesondere für ein kraftfahrzeug |
EP2055921A1 (de) * | 2007-10-31 | 2009-05-06 | Behr GmbH & Co. KG | Ansaugluft-Einlassmodul, Ansaugluft-Einlasssystem, Ansaugluft-Einlasstrakt, Abgasrückführsystem, Verbrennungsmotor |
WO2009068480A1 (fr) * | 2007-11-27 | 2009-06-04 | Valeo Termico S.A. | Echangeur de chaleur pour gaz, notamment pour les gaz d'echappement d'un moteur |
EP2227667B1 (de) | 2007-11-27 | 2016-02-10 | Valeo Termico S.A. | Wärmetauscher für gase, insbesondere für das abgas aus einem motor |
FR2938321A1 (fr) * | 2008-11-07 | 2010-05-14 | Valeo Sys Controle Moteur Sas | Echangeur thermique comportant des conduites paralleles |
WO2010102697A1 (de) * | 2009-03-09 | 2010-09-16 | Emcon Technologies Germany (Augsburg) Gmbh | Abgasrückführungssystem |
EP2310658A4 (de) * | 2009-08-25 | 2015-11-18 | Unick Corp | Bypass-ventil mit egr-ventil |
EP2299099A3 (de) * | 2009-09-22 | 2014-03-26 | Pierburg GmbH | Wärmeübertragungsvorrichtung |
DE102009042258A1 (de) | 2009-09-22 | 2011-07-07 | Pierburg GmbH, 41460 | Wärmeübertragungsvorrichtung |
EP2299099A2 (de) | 2009-09-22 | 2011-03-23 | Pierburg GmbH | Wärmeübertragungsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
US20050235973A1 (en) | 2005-10-27 |
EP1589214B1 (de) | 2011-07-06 |
US7077114B2 (en) | 2006-07-18 |
ATE515634T1 (de) | 2011-07-15 |
DE102004019554B4 (de) | 2007-08-30 |
EP1589214A3 (de) | 2010-09-29 |
DE102004019554C5 (de) | 2014-03-27 |
DE102004019554A1 (de) | 2005-11-17 |
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