EP3137331A1 - Système d'échappement pour véhicule automobile - Google Patents

Système d'échappement pour véhicule automobile

Info

Publication number
EP3137331A1
EP3137331A1 EP15722127.6A EP15722127A EP3137331A1 EP 3137331 A1 EP3137331 A1 EP 3137331A1 EP 15722127 A EP15722127 A EP 15722127A EP 3137331 A1 EP3137331 A1 EP 3137331A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
housing
exhaust
valve
bypass line
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.)
Withdrawn
Application number
EP15722127.6A
Other languages
German (de)
English (en)
Inventor
Klaus Irmler
Michael Schmidt
Peter Geskes
Eberhard Pantow
Andreas Kleber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP3137331A1 publication Critical patent/EP3137331A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/101—Regulating means specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K15/00—Adaptations of plants for special use
    • F01K15/02—Adaptations of plants for special use for driving vehicles, e.g. locomotives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
    • 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
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • 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
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • F01N2410/02—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of high temperature, e.g. overheating of catalytic reactor
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • 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

Definitions

  • the invention relates to an exhaust system for a motor vehicle, in particular for a commercial vehicle.
  • the invention further relates to a motor vehicle, in particular a commercial vehicle, with such an exhaust system.
  • exhaust gas evaporator which as part of a cooperating with the internal combustion engine exhaust system is flowed through by both exhaust gas and a liquid working medium.
  • the hot exhaust gas serves to evaporate the liquid working medium, which is present after evaporation in gas form and can be expanded in the course of a Rankine process, whereby mechanical work is generated. This can be coupled to increase the efficiency in the drive train of the internal combustion engine.
  • exhaust gas evaporators are typically equipped with a sufficiently sized housing and are stored together with other, acting in the exhaust system of the engine components on the vehicle frame of the motor vehicle.
  • Such another component is often an exhaust aftertreatment device upstream of the exhaust gas evaporator. It is used for the treatment and purification of pollutants present in the exhaust gas, before they are introduced into the exhaust gas evaporator and then released from this into the environment of the motor vehicle.
  • said exhaust aftertreatment device is usually equipped with a separate housing and is fastened in a manner analogous to the exhaust gas evaporator by means of suitable fastening means to the vehicle body.
  • the required fluidic connection between the exhaust aftertreatment device is generally made via a suitable net trained exhaust pipe, which is arranged between the exhaust gas aftertreatment device and the exhaust gas evaporator.
  • EP 2 1 10 527 B1 discloses a commercial vehicle with an internal combustion engine and a heat recovery system cooperating therewith. A medium circuit of this heat recovery system is arranged in a muffler, which in turn is arranged in an exhaust line of the internal combustion engine of the motor vehicle.
  • the basic idea of the invention is therefore to equip the exhaust-gas treatment device and the exhaust-gas evaporation device either with separate housings and arrange them immediately adjacent to one another and fasten them together so that they form a structural unit or, alternatively, to dimension the housing of the exhaust-gas aftertreatment device such that it does not harbors only the essential components of the exhaust aftertreatment device, but also that of the Abgasausampfungs adopted is able to accommodate.
  • said bypass line is at least partially disposed between the two housings, in the latter case within the housing of the exhaust gas aftertreatment device.
  • the attachment to the motor vehicle can take place via suitable fastening elements, for example, realize a screw.
  • suitable fastening elements for example, realize a screw.
  • a storage with an acting as a support cantilever and tension straps for fixing to such a cantilever is conceivable.
  • An exhaust gas system comprises an exhaust gas aftertreatment device as well as an exhaust gas aftertreatment device that is fluidly connected downstream of the exhaust gas aftertreatment device.
  • the exhaust aftertreatment device is arranged in a first housing attachable to the motor vehicle.
  • exhaust aftertreatment device covers all functional components of this device which are used for the aftertreatment and purification of the exhaust gas introduced into the same, such as a diesel particulate filter or an SCR catalytic converter. Gas evaporation device "are to be understood accordingly all functional components of the above-explained Abgasausampfungs worn.
  • the exhaust gas system furthermore comprises a connecting line that fluidly connects the exhaust gas aftertreatment device to the exhaust gas evaporation device.
  • This has a fluid inlet which communicates fluidically with the exhaust gas aftertreatment device and a fluid outlet which communicates fluidically with the exhaust gas vaporization device.
  • From the connecting line branches off at a branch point from an evaporator bypass line, which in turn communicates fluidly with the environment of the exhaust system.
  • the connecting line comprises a valve device, which is adjustable between a first and a second position, such that the fluid inlet in the first position communicates fluidically with the fluid outlet and in the second position fluidically with the bypass pipe.
  • the exhaust gas evaporation device comprises a separate, second housing in addition to the first housing of the exhaust gas aftertreatment device.
  • the connecting line is at least partially disposed between the first and the second, and the two housings are fixed to each other by means of at least one fastening element.
  • the two mutually attached housing together form a structural unit, which in turn can be mounted as a whole on the motor vehicle, such as on the body frame. This can also be done with the help of suitable fasteners in the manner of a screw or a cantilever with tension bands, which are provided on the first and / or on the second housing.
  • the exhaust gas evaporation device and the connecting line are arranged in a second aspect of the invention in a common housing.
  • the exhaust aftertreatment device and the exhaust gas evaporation device according to the second aspect of the invention also form a structural unit which in turn can be fastened as a unit to the motor vehicle by means of the common housing.
  • the branch point may be arranged between the housing of the exhaust gas aftertreatment device and the evaporator housing. In this way, the space between the two adjacent to each other arranged housings can be used effectively.
  • the connecting line and the evaporator bypass line are integrally formed on the second housing of the Abgasverdampfungs announced.
  • the provision of separate components for the realization of connecting line and evaporator bypass line can be omitted in this variant. This results in reduced manufacturing costs in the production of the exhaust system result.
  • the valve device can have exactly one arranged in the branch point butterfly valve with two flap sections and a rotationally fixedly arranged between these valve spindle. Said butterfly valve is rotationally adjustable between the first and the second position. This embodiment allows the realization of a controllable exhaust branch with very little space requirement.
  • the two flap sections are designed such that they form a conduit wall section of the connecting line in the first position of the valve device. In contrast, they form in the second position a conduit wall portion of the evaporator bypass line. Even such a configuration requires very little space.
  • a curved common conduit wall section is integrally formed between the connecting line and the evaporator bypass line.
  • This conduit wall portion defines a transition region between the connection line and the evaporator bypass line, in which the second flap portion for moving the valve device between the first and the second position is movable.
  • the connection line between the exhaust aftertreatment device and the exhaust gas evaporation device does not have a fluid branch for the evaporator bypass line, as is the case in the exhaust systems according to the first and second aspects.
  • the evaporator bypass line is designed as a separate line, which establishes a direct connection between the exhaust aftertreatment device and the environment of the exhaust system.
  • the connecting line and moreover also the evaporator bypass line to a valve device which is adjustable between a first and a second position. In the first position, the connecting line is released for flowing through with exhaust gas, the evaporator bypass line, however, closed. Conversely, in the second position, the connecting line is closed and the evaporator bypass line is released to flow through with exhaust gas.
  • the exhaust gas evaporating device and the connecting pipe are arranged in the housing of the exhaust gas after-treatment device in the same manner as in the exhaust gas system according to the second aspect.
  • at least one fastening element is provided on the housing of the exhaust gas aftertreatment device, by means of which this is fastened to the motor vehicle.
  • the fastener may be part of a screw or include a cantilever with tension bands.
  • a partition wall is provided in the housing which divides the housing into a first and a second housing interior.
  • the first housing interior accommodates in this scenario, the exhaust aftertreatment device, the second housing interior of the exhaust gas evaporation device.
  • a first opening is provided, which passes through the connecting line, so that the fluid inlet in the first housing interior and the fluid idauslass is arranged in the second housing interior.
  • a second breakthrough is provided in the partition.
  • outlets of the connecting line and the evaporator bypass line are particularly expediently provided on the same housing wall of the housing of the exhaust gas aftertreatment device.
  • Such an arrangement of said outlets can be realized in a particularly preferred embodiment of the exhaust system according to the third aspect by providing a third opening on one of the partition wall opposite the housing wall of the second housing interior. This passes through the evaporator bypass line.
  • the evaporator bypass line extends fluidically separated from the second housing interior in this and passes through the third opening, so that the outlet of the evaporator bypass line can be arranged outside of the housing.
  • the housing has a passage opening through which the Abgasverdampfungs beautiful can be introduced into this housing.
  • the exhaust gas evaporation device including all functional components of the exhaust gas evaporation device, is fixed to the housing via a fastening flange, in particular via a fastening plate which is part of said exhaust gas evaporation device.
  • the mounting flange closes said passage opening fluid-tight.
  • the valve device may comprise a valve spindle mounted adjustably on the connecting line and a valve flap mounted on the valve spindle.
  • the bearing of the valve stem on the connecting line is such that the valve flap is adjustable by rotation of the spindle between a first and a second position.
  • Said valve flap closes the evaporator bypass line in a first position and releases the fluid outlet in this position. In the second position, however, the evaporator bypass line is released and closed the fluid outlet.
  • valve device may be designed in the manner of a butterfly valve, also known to those skilled in the art as a "butterfly" valve Butterfly valve is a largely symmetrical arrangement of the valve flap relative to the rotatable valve spindle, such that the spindle with respect to a plan view of the butterfly valve in the axial direction the spindle is centered between a first flap portion and a second flap portion.
  • the valve device presented here is equipped with two such butterfly valves, which are both arranged within the connecting line in the exhaust system according to the first and second aspects.
  • a first butterfly valve with two wing flaps and a rotatably mounted therebetween first valve stem is disposed between the branch point and the fluid outlet in the connecting line and releases the connecting line in the first position for flowing with exhaust gas, it closes, however, in the second position.
  • a second butterfly valve is arranged in the evaporator bypass line and serves to close the evaporator bypass line in the first position, whereas it releases it in the second position for flowing through with exhaust gas.
  • the first butterfly valve in the connection line and the second butterfly valve are arranged in the evaporator bypass line.
  • an electrically, hydraulically or pneumatically driven actuator is recommended in an advantageous development of the invention.
  • This may be arranged at a suitable location in the housing of the exhaust gas aftertreatment device or between the two housings of exhaust gas evaporation device and exhaust gas aftertreatment device.
  • the actuator serves to drive the valve device so that it can be adjusted between the first and the second position.
  • the actuation of the actuator can preferably take place with the aid of a control device likewise arranged in said housings.
  • the actuation of the actuator by the control unit of the cooperating with the exhaust system internal combustion engine takes place.
  • the valve device may also include a biasing device which biases the valve flap or the butterfly valve in the second position.
  • a biasing device which biases the valve flap or the butterfly valve in the second position.
  • a sealing element in particular in the manner of a sealing ring, can be provided in the connecting line in a particularly preferred embodiment. This serves to seal the connecting line against the environment of the exhaust system.
  • the flap valve of the flap valve or the two flap portions of the butterfly valve can be supported in the second position.
  • the invention further relates to a motor vehicle, in particular a commercial vehicle, with an internal combustion engine and with a cooperating with the internal combustion engine exhaust system with one or more of the aforementioned features.
  • Fig. 1 shows an example of an exhaust system according to the invention according to the first aspect in a perspective view
  • Fig. 2 shows an example of an exhaust system according to the invention according to the
  • Fig. 3 shows an example of an exhaust system according to the invention according to the
  • FIG. 4 shows a circuit-diagram-like illustration illustrating the valve device of the exhaust system, in which the valve device is designed as a pivotable valve flap, FIG.
  • Fig. 5 shows a variant of the valve device of Figure 4, in which two
  • FIG. 1 illustrates in a perspective view an example of a first example of an exhaust system 1 according to the invention.
  • This figure clearly illustrates the modular design of the exhaust system 1 with an exhaust gas aftertreatment device 2 and an exhaust gas aftertreatment device 2 fluidly downstream exhaust gas evaporation device 3, both of which have a respective individual housing 4, 5.
  • the functional components of the Abgasverdampfungs were not shown in more detail in the representation of Figure 1 for the sake of clarity.
  • the exhaust system 1 comprises a connection line 6, by means of which the exhaust gas treated in the exhaust gas aftertreatment device 2 can be transported into the exhaust gas evaporation device 3.
  • the connecting line 6 has a fluid inlet 7, which communicates fluidly with the exhaust-gas aftertreatment device 2, and a fluid outlet 8, which communicates fluidically with the exhaust-gas evaporation device 3.
  • From the connecting line 6 branches off at a branch point 9 from an evaporator bypass line 10, which communicates fluidically with the environment U of the exhaust system 1.
  • the exhaust gas introduced from the exhaust gas aftertreatment device 2 into the connecting line 6 can therefore be discharged directly into the environment U without the exhaust gas evaporation device 3 having to flow through it.
  • At least one fastening element 17 is provided on each of the two housings 4, 5, by means of which it can be fastened to a frame part 26 of the motor vehicle.
  • at least one further fastening element 18 is present according to the invention, which fixes the two housings 4, 5 to one another so that they form a structural unit. All fastening elements 17, 18 shown in the figures can be part of a screw connection.
  • a storage of the housing 4, 5 with an acting as a support cantilever and tension straps for fixation on the cantilever is conceivable.
  • valve device 1 1 provided in the connecting line 6, which is only roughly sketched in FIG. 1, but whose mode of operation can be seen from the circuit diagram-like illustration of FIG. It should first be noted, however, that, as shown in FIG. 4, the branch point 9 is arranged between the housing 4 of the exhaust aftertreatment device 2 and the housing 5 of the exhaust gas evaporation device 3.
  • the valve device 1 can comprise a valve spindle 12 which is adjustably mounted on the connecting line 6 and a non-rotatably mounted valve flap 13 on this.
  • the valve spindle 12 is between a first position shown in Figure 1, in which the valve flap 13 in the first position, the evaporator bypass line 10 closes and at the same time the fluid idauslass 8 releases, and a second position adjustable in rotation. In the second position - indicated by the dashed line of the valve flap 13 '- the evaporator bypass line 10 is released to flow through with exhaust gas, whereas the fluid outlet 8 is closed by the valve flap 13'.
  • the exhaust system 1 For adjusting the valve device 1 1 or the valve spindle 12 between the first and the second position, the exhaust system 1 with an electrically, hydraulically raulisch or pneumatically driven and in Figure 4 only roughly sketched outlined actuator 14 are equipped.
  • the valve device 1 1 it proves to be advantageous to provide the valve device 1 1 with a biasing means (not shown), by means of which the valve device 1 1 is biased in the sense of a fail-safe function in the second position.
  • FIG. 5 illustrates a variant of the valve device 11 in which the flap valve of FIG. 4 is replaced by two butterfly valves 15a, 15b.
  • a butterfly valve 15a, 15b the respective valve spindle 12a, 12b with respect to a plan view of the butterfly valve 15a, 15b in the axial direction A said spindle 12a, 12b between a first flap portion 13.1a, 13.1b and a second flap portion 13.2a, 13.2b centered, wherein the two second flap portions 13.2a, 13.2b are each identical to the associated first flap portion 13.1 a, 13.1 b are formed.
  • Both butterfly valves 15a, 15b are disposed within the connecting pipe 6 when they are used in the exhaust system according to the first and second aspects of the invention.
  • the first butterfly valve 15a is then in a position between the branch point 9 and the fluid outlet 8 within the connection line 6. It releases the connection line 6 between branch point 9 and fluid outlet 8 in the first position for flowing with exhaust gas and closes it in the second position ,
  • the second butterfly valve 15b is arranged in the evaporator bypass line 10. It serves to close the evaporator bypass line 10 in the first position, whereas it releases it in the second position for flowing through with exhaust gas, so that it can be released in the environment U.
  • a sealing element (not shown in the figures for the sake of clarity) can be provided in the connecting line 6, in particular in the manner of a sealing ring, for sealing the connecting line 6 against the surroundings U of FIG Abgasanla- be provided 1, on which the valve flap 13 and the two flap sections 13.1 a, 13.1 b of the first butterfly valve 15a is supported / supported in the second position.
  • FIG. 6 shows a variant of the valve device of FIG. 1 with only a single butterfly valve 15.
  • the connecting line 6 and the evaporator bypass line 10 can be integrally formed on the second housing 5 of the exhaust gas evaporation device 3.
  • the valve device 11 has exactly one butterfly valve 15 arranged in the branching point 9 with two flap sections 13a, 13b and a valve spindle 12a arranged in a rotationally fixed manner between the two flap sections 13a, 13b.
  • the butterfly valve 15 is rotatably adjustable between the first and the second position, wherein FIG.
  • FIG. 6 shows the butterfly valve 15 in its second position.
  • the first position of the butterfly valve 15 is indicated by dashed lines in FIG.
  • the two flap sections 13a, 13b are designed such that in the first position they form a conduit wall section 28a of the connecting line 6.
  • the second position they form a conduit wall section 28b of the evaporator bypass line 10.
  • Such a configuration requires very little space.
  • Between the connecting line 6 and the bypass line 10 is integrally formed a curved common conduit wall portion 29.
  • the conduit wall portion 29 defines a transition region 30 between the connecting line 6 and the evaporator bypass line 10, in which the second flap portion 13 b for adjusting the valve device 1 1 is movably arranged between the first and the second position.
  • FIG. 2 shows an example of an exhaust system 1 according to the invention according to the second aspect. This differs from that according to FIG. 1 primarily in that the exhaust-gas aftertreatment device 2 and the exhaust-gas evaporation device 3 are not each provided with separate housings, but instead-as shown in FIG. 2 -the exhaust gas evaporation device 3 and, moreover, also the connecting line 6 in a common housing 4 are arranged.
  • the exhaust system 1 according to the second aspect like that of the first aspect, is equipped with a valve device 11, as has been explained with reference to FIGS. 4 and 5.
  • an opening 22d can be provided on the housing 4 of the exhaust gas aftertreatment device 3, through which the vaporizer bypass line 10 is carried out to the outside.
  • FIG. 3 shows an example of an exhaust system 1 according to the third aspect of the invention.
  • the connecting line 6 between the exhaust aftertreatment device 2 and the exhaust gas evaporation device does not have a fluid branch 3, as is the case with the exhaust system 1 according to FIGS. 1 and 2.
  • the evaporator bypass line 10 is executed in the example scenario of Figure 3 as a separate line, which realizes a fluidic direct connection between the exhaust aftertreatment device 2 and the environment U of the exhaust system 1.
  • the exhaust system 1 of FIG. 3 also comprises a valve device (not shown in FIG. 3 for the sake of clarity), which is provided both in the connecting line 6 and in the evaporator bypass line 10 and can be adjusted between a first and a second position.
  • the connecting line 6 In the first position of the valve device, the connecting line 6 is released to flow through with exhaust gas, the evaporator bypass line 10, however, closed. Conversely, in the second position, the connecting line 6 is closed and the evaporator bypass line 10 is released to flow through with exhaust gas.
  • the butterfly valves 15a, 15b discussed above in connection with FIG. 5 are used, the first butterfly valve becomes 15a arranged in the connecting line 6 and the second butterfly valve 15b in the separate evaporator bypass line 10.
  • the exhaust gas evaporation device 3 and the connecting line 6 are arranged in a common housing 4 in the same way as in the exhaust system 1 according to the second aspect.
  • the housing 4 of the exhaust aftertreatment device 2 beyond a partition wall 20 is provided which divides the housing 4 into a first and a second housing interior 21 a, 21 b.
  • the first housing interior 21 a accommodates the exhaust aftertreatment device 2, the second housing interior 21 b, the exhaust gas evaporation device 3.
  • a first opening 22 a is provided, which is penetrated by the connecting line 6, so that the fluid inlet 7 of the connecting line 6 in the first housing interior 21st a is arranged.
  • a second opening 22b is accordingly provided in the partition wall 20, which passes through it.
  • a third opening 22 c is realized, which as well as said second opening 22 b is penetrated by the evaporator bypass line 10.
  • the evaporator bypass line 10 extends in the second housing interior 21b fluidly separated therefrom between the second and third openings 22b, 22c.
  • a through-opening 16 is provided in the latter, through which the entire exhaust gas evaporation device 3, including a fastening flange 27 designed as a fastening plate 25, can be inserted into the second housing interior 21 b of the housing 4. tion plate 25 in such, introduced into the housing 4 state said passage opening 16 closes.
  • the mounting flange 27 carries the entire Abgasverdampfungs worn 3 and is itself fixed to the housing wall 20.
  • FIG. 3 furthermore illustrates that an exhaust gas outlet 24 of the exhaust gas evaporator device 3 is also arranged in the fastening plate 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention concerne un système d'échappement (1) pour un véhicule automobile, en particulier pour un véhicule utilitaire, comprenant un dispositif de post-traitement des gaz d'échappement (2) disposé dans un premier boîtier (4) apte à être monté sur le véhicule automobile, un dispositif évaporateur à gaz d'échappement (3) communiquant fluidiquement avec le dispositif de post-traitement des gaz d'échappement (2), disposé dans un second boîtier (5), et une conduite de liaison (6) reliant fluidiquement le dispositif de post-traitement de gaz d'échappement (2) au dispositif évaporateur à gaz d'échappement (3), présentant une entrée de fluide (7) communiquant fluidiquement avec le dispositif de post-traitement de gaz d'échappement (2), et une sortie de fluide (8) communiquant fluidiquement avec le dispositif évaporateur à gaz d'échappement (3). Une conduite de contournement de l'évaporateur (10) dérive de la conduite de liaison (6) au niveau d'un point d'embranchement (9), et la conduite de liaison (6) est pourvue d'un système de vanne (11) réglable entre une première et une seconde position, de telle sorte que l'entrée de fluide (7) communique fluidiquement avec la sortie de fluide (8) dans la première position, et avec la conduite de contournement de l'évaporateur (10) dans la seconde position, et le dispositif évaporateur à gaz d'échappement (3) est installé dans un second boîtier (5).
EP15722127.6A 2014-04-30 2015-04-30 Système d'échappement pour véhicule automobile Withdrawn EP3137331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014208253.6A DE102014208253A1 (de) 2014-04-30 2014-04-30 Abgasanlage für ein Kraftfahrzeug
PCT/EP2015/059522 WO2015166055A1 (fr) 2014-04-30 2015-04-30 Système d'échappement pour véhicule automobile

Publications (1)

Publication Number Publication Date
EP3137331A1 true EP3137331A1 (fr) 2017-03-08

Family

ID=53175457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15722127.6A Withdrawn EP3137331A1 (fr) 2014-04-30 2015-04-30 Système d'échappement pour véhicule automobile

Country Status (6)

Country Link
US (1) US10240488B2 (fr)
EP (1) EP3137331A1 (fr)
JP (1) JP2017515037A (fr)
KR (1) KR20160147030A (fr)
DE (1) DE102014208253A1 (fr)
WO (1) WO2015166055A1 (fr)

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DE202014102809U1 (de) * 2014-06-18 2014-08-06 Tenneco Gmbh Abgasmodul für eine Brennkraftmaschine
MX2017005399A (es) 2014-10-30 2017-07-26 Textile-Based Delivery Inc Sistemas de administracion.
US10570784B2 (en) * 2017-09-22 2020-02-25 Tenneco Gmbh Rankine power system for use with exhaust gas aftertreatment system
DE102018215334A1 (de) * 2018-09-10 2020-03-12 Mahle International Gmbh Nutzfahrzeug mit Wärmerückgewinnungseinrichtung

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Also Published As

Publication number Publication date
DE102014208253A1 (de) 2015-11-05
WO2015166055A1 (fr) 2015-11-05
KR20160147030A (ko) 2016-12-21
US10240488B2 (en) 2019-03-26
JP2017515037A (ja) 2017-06-08
US20170067372A1 (en) 2017-03-09

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