EP4343125A1 - Structure de tuyau, système d'échappement comprenant une structure de tuyau et véhicule comprenant un système d'échappement ou une structure de tuyau - Google Patents

Structure de tuyau, système d'échappement comprenant une structure de tuyau et véhicule comprenant un système d'échappement ou une structure de tuyau Download PDF

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Publication number
EP4343125A1
EP4343125A1 EP23195991.7A EP23195991A EP4343125A1 EP 4343125 A1 EP4343125 A1 EP 4343125A1 EP 23195991 A EP23195991 A EP 23195991A EP 4343125 A1 EP4343125 A1 EP 4343125A1
Authority
EP
European Patent Office
Prior art keywords
pipe
collecting
section
measuring device
tube
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.)
Pending
Application number
EP23195991.7A
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German (de)
English (en)
Inventor
Herbert Albert
Christoph Ebert
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.)
MAN Truck and Bus SE
Original Assignee
MAN Truck and Bus SE
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 MAN Truck and Bus SE filed Critical MAN Truck and Bus SE
Publication of EP4343125A1 publication Critical patent/EP4343125A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • 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
    • F01N2240/20—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 flow director or deflector
    • 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
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • 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
    • F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
    • 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
    • F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter
    • 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
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • 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

Definitions

  • the invention relates to a pipe construction, preferably for integration into an exhaust system of a vehicle.
  • the invention further relates to an exhaust system having an exhaust pipe which is fluidly connected to the pipe structure and a vehicle having the pipe structure or the exhaust system.
  • a flow that is unequally distributed over a pipe cross-section or due to an inhomogeneous flow profile
  • material values that are unequally distributed over the pipe cross-section e.g. NOx or NH 3
  • the document EP 1 624 295 A1 describes a device with a sensor for determining one or more components of a medium flowing in an installation duct.
  • the device has a housing and a main channel connected to it, which is closed at an end facing away from the housing and which projects into the installation channel.
  • the main duct has an opening remote from the end that creates a connection between the main duct and the service duct.
  • the main duct also has a further opening which creates a connection between the main duct and the installation duct. The medium thus flows between the openings, through the main channel past the sensor.
  • An object of the invention is to provide an improved and/or alternative technique for removing fluid and supplying the removed fluid to a measuring device, by means of which advantageously a better averaging of measured value differences present across a pipe cross section is made possible, in particular a substantially homogenization of the removed Fluids in front of the measuring device.
  • the invention relates to a pipe construction, preferably for integration into an exhaust system of a vehicle.
  • the pipe construction has a pipe for conducting a fluid (e.g. for conducting an exhaust gas from an internal combustion engine) and at least one collecting pipe.
  • a fluid e.g. for conducting an exhaust gas from an internal combustion engine
  • the pipe construction can also have several collecting pipes.
  • the tube has a (e.g. changing and/or essentially constant) tube cross section.
  • the at least one collecting pipe has two open pipe ends and at least one opening for removing fluid from the pipe cross section.
  • the at least one collecting pipe can z. B. be designed as a multi-hole probe.
  • the at least one collecting pipe is arranged in the pipe cross section.
  • the at least one collecting pipe can protrude into the pipe cross section.
  • the at least one collecting pipe extends over the entire pipe cross section.
  • the pipe construction also has a collecting space which is fluidly connected to the two open pipe ends. Fluid removed can be fed to a measuring device via the collecting space.
  • the measuring device is preferably used to measure a substantially average concentration of exhaust gas components in an exhaust system, in particular to determine the nitrogen and/or ammonia concentration, expediently by means of at least one NOx sensor.
  • An advantage of the invention can e.g. B. be that fluid removal is made possible at a more internal position and/or over a larger pipe cross section. Furthermore, better homogenization of the fluid can occur. Overall, a better averaging (e.g. for measuring the average concentration of exhaust gas components in an exhaust system) of differences that may exist in the pipe with regard to the measured variable to be recorded (e.g. nitrogen, nitrogen oxide and/or ammonia concentration) can result. The measurement accuracy can thereby be increased. This makes it possible to generate a sensor signal that approximately represents the average concentration of the component to be measured, e.g. B. Exhaust gas component is useful in the main stream.
  • the measured variable to be recorded e.g. nitrogen, nitrogen oxide and/or ammonia concentration
  • the feature pipe construction, pipe, header pipe and/or pipe cross section as used herein is preferably not limited to circular cross sections. Rather, any cross-sectional shapes are included, such as a rectangular, polygonal, oval and/or asymmetrical cross-sectional shape.
  • the at least one header tube comprises several (e.g. at least two, three, four, five, six, seven, eight or nine) header tubes.
  • the collecting pipes each have two open pipe ends and at least one opening for removing fluid from the pipe cross section, with the plurality of collecting pipes expediently protruding into the pipe cross section.
  • the multiple collecting pipes each extend over the entire pipe cross section.
  • the pipe construction can expediently also include the measuring device.
  • the measuring device is preferably a fluid sensor, such as an exhaust gas sensor, NH 3 sensor and/or NOx sensor. This offers the particular advantage that commercially available NOx sensors can be used.
  • the tube can have an axial direction and a radial direction (e.g. oriented orthogonally to the axial direction A).
  • the pipe cross section is preferably aligned orthogonally to the axial direction.
  • the pipe cross section can e.g. B. have the shape of a circular disk.
  • the pipe cross section can e.g. B. be limited by an inner circumference of the tube.
  • the collecting space can be arranged outside the pipe.
  • the collection room can be e.g. B. extend at least in sections along an outer circumference of the tube.
  • the collecting space can be delimited on the inside by the pipe.
  • the collecting space can be designed as an annular chamber.
  • the collecting space can extend (e.g. at least in sections) coaxially to the pipe.
  • the collecting space can surround the tube along its outer circumference at least in sections, preferably completely concentrically.
  • the collecting space is, for example, an outer tube that concentrically surrounds the tube.
  • the pipe and the collecting space can e.g. B. be designed as a double-walled tube.
  • the collecting space can have a first region in which at least one of the pipe ends is fluidly connected to the collecting space, and a second region (e.g. the merging chamber described further below) in which the measuring device is arranged.
  • the first region and the second region can be arranged offset from one another in a circumferential direction of the tube.
  • the measuring device can have an alignment axis (e.g. a longitudinal and/or central axis).
  • the at least one collecting tube can have a longitudinal axis, the alignment axis of the measuring device z. B. is arranged transversely and/or skewed to the longitudinal axis of the at least one collecting pipe.
  • the longitudinal axis of the collecting pipe can z. B. be an axis along a largest spatial extent of the collecting pipe.
  • the alignment axis of the measuring device can, for. B. be an axis along a largest spatial extent of the measuring device.
  • the longitudinal axis of the collecting tube and the alignment axis of the measuring device are preferably arranged offset from one another in the axial direction of the tube.
  • the at least one manifold can comprise several manifolds, each of which has a longitudinal axis and each z. B. are arranged transversely and/or skewed to the alignment axis of the measuring device.
  • the alignment axis of the measuring device can also, for. B. be arranged transversely and / or skewed to the pipe cross section.
  • a first of the two pipe ends is fluidly connected to the collecting space at a first region of the pipe cross section.
  • a second of the two pipe ends can be fluidly connected to the collecting space at a second region of the pipe cross section opposite the first region.
  • the first area can be e.g. B. act as an inner wall section of the pipe.
  • the area can be, for example, a further inner wall section of the pipe opposite the inner wall section.
  • the at least one collecting tube extends orthogonally to a longitudinal axis (e.g. to a central axis) of the tube (12).
  • the at least one collecting pipe can extend over a total width of the pipe cross section.
  • the at least one collecting pipe can, for example, also run through a center point of the pipe cross section.
  • the at least one collecting pipe is arranged eccentrically with respect to the center of the pipe cross section, i.e. does not run through the center of the pipe cross section.
  • the pipe construction can have a return area for returning fluid removed from the collection space into the pipe. It is possible for the measuring device to be arranged in the return area and/or adjacent to the return area. Alternatively or additionally, it is conceivable that the measuring device extends (e.g. transversely) through the collecting space and the return area into the pipe
  • the measuring device is preferably arranged to measure in the return area, adjacent to the return area and/or in the pipe.
  • the return area can e.g. B. have a passage opening in the pipe.
  • a first (e.g. wide and/or external) section of the measuring device can be arranged in the collecting space.
  • a second (e.g. slim and/or internal) section of the measuring device can protrude through the passage opening into the pipe.
  • the measuring device can have at least one inlet opening through which removed fluid can be introduced into a measuring section (e.g. a measuring chamber) of the measuring device.
  • the measuring device can have at least one outlet opening through which withdrawn fluid can be returned into the pipe.
  • the first section has at least the inlet opening through which withdrawn fluid can be introduced into a measuring section of the measuring device and/or the second section has at least the Outlet opening through which removed fluid can be returned to the pipe.
  • the return area can have a gap.
  • the gap is preferably a circumferential gap (e.g. annular gap) extending around the measuring device. Fluid removed via the gap (e.g. past the measuring device laterally and/or bypassing the measuring section of the measuring device) from the collecting space into the pipe.
  • the measuring device is preferably designed as a fluid sensor.
  • the measuring range (e.g. the measuring chamber) is preferably limited by a sensor protective cap of the fluid sensor.
  • the fluid sensor can e.g. B. be a NOx sensor or an NH 3 sensor and/or generally an exhaust gas sensor.
  • the external section is, for example, an external half of the measuring device (preferably an external half of the sensor protective cap), the internal section is, for example, an internal half of the measuring device (preferably an internal half of the sensor protective cap).
  • the pipe cross section can have a pipe diameter.
  • the pipe diameter is preferably oriented along the radial direction.
  • the collection space can extend along an axial direction of the pipe over a length that corresponds to at least 50%, at least 75%, at least 100%, at least 125% or at least 150% of the pipe diameter.
  • the collecting space can also have a longitudinal extension up to the measuring device.
  • the longitudinal extent can correspond to at least 50%, at least 75%, at least 100%, at least 125% or at least 150% of the pipe diameter.
  • the collecting space can have a clear gap (e.g. in a radial direction of the pipe) of at most 5%, at most 10%, at most 15% or at most 20% of the pipe diameter.
  • the collecting space can be slot-shaped.
  • the at least one header pipe can have a pipe diameter that corresponds to a maximum of 5%, a maximum of 10%, a maximum of 15% or a maximum of 20% of the pipe diameter of the pipe cross section.
  • the collecting space can have a merging chamber in order to combine (e.g. mix and/or homogenize) removed fluid and supply it to the measuring device.
  • the measuring device can be arranged in the merging chamber.
  • the return area can be arranged in the merging chamber.
  • the merging chamber can protrude from the collecting space (e.g. axially). It is conceivable that the merging chamber is arranged axially offset from the at least one collecting pipe.
  • the merging chamber has a smaller fluid holding volume than the collecting space.
  • the merging chamber can extend over a maximum of 30%, 20% or 10% of the outer circumference of the tube.
  • the collection space extends over at least 70%, 80% or 90% or substantially 100% of the outer circumference of the tube.
  • the pipe diameter is essentially constant along an axial direction, at least over the longitudinal extent of the collecting space.
  • the at least one opening can be designed (e.g. as a bore) in a lateral surface of the at least one collecting pipe.
  • the at least one opening can include several adjacent openings.
  • the plurality of adjacent openings viewed in a longitudinal direction of the at least one collecting pipe, can be arranged equidistant from one another and (e.g. individual of the plurality of adjacent openings) from an inner wall of the pipe.
  • the at least one collecting tube can be a multi-hole probe.
  • the at least one manifold can have at least two manifolds.
  • the at least two collecting pipes can be arranged offset from one another in the pipe cross section.
  • the at least two collecting pipes can have a (e.g. identical) pipe diameter.
  • This has the advantage that the collecting pipes, which are arranged in rows offset from one another and spaced apart from one another, continue to allow fluid flow past the collecting pipes and blockage of the pipe is prevented.
  • the at least one collecting pipe can z. B. include several collecting pipes.
  • the several collecting pipes can z. B. be arranged perpendicular to a main flow axis of the fluid.
  • the multiple collecting pipes can z. B. be arranged offset from one another in an axial direction and / or radial direction of the tube.
  • the plurality of header tubes preferably extend essentially parallel to one another.
  • the plurality of collecting pipes are preferred, e.g. B. offset parallel to one another and/or equidistant from one another.
  • individual of the plurality of collecting pipes can be arranged equidistant from an inner wall of the pipe.
  • the multiple collecting pipes can z. B. can be arranged offset from one another in an axial direction of the tube (e.g. offset from one another in steps).
  • the plurality of header pipes can be arranged in a substantially V-shape when viewed in an axial direction of the pipe, e.g. B. so that the pipe cross section is expediently not significantly blocked by the collecting pipes and / or a pressure loss generated by the collecting pipes can be advantageously reduced.
  • the plurality of header tubes can extend essentially parallel to one another.
  • the openings are spaced apart from one another and the collecting pipes are spaced apart from one another in such a way that there is a substantially uniform distribution of openings over the pipe cross section.
  • the collecting pipes have a substantially the same and/or identical diameter.
  • the invention further relates to an exhaust system, having an exhaust pipe for conducting exhaust gas from an internal combustion engine.
  • the exhaust pipe is fluidly connected to a pipe structure as disclosed herein. However, it is also conceivable that the pipe forms part of this exhaust system in sections.
  • the invention further relates to a vehicle having a pipe structure or an exhaust system as disclosed herein.
  • the vehicle can e.g. B. a watercraft (e.g. a ship or a boat), a motor vehicle (e.g. a passenger car), a commercial vehicle (e.g. a truck, a snow groomer or a tractor) or a rail vehicle (e.g . a railway vehicle, preferably a locomotive).
  • a watercraft e.g. a ship or a boat
  • a motor vehicle e.g. a passenger car
  • a commercial vehicle e.g. a truck, a snow groomer or a tractor
  • a rail vehicle e.g a railway vehicle, preferably a locomotive.
  • the commercial vehicle can be a motor vehicle that, due to its design and equipment, is used to transport people, transport goods or tow vehicles of trailer vehicles.
  • the commercial vehicle can also be a bus and/or a tractor unit.
  • the invention further relates to a stationary unit (e.g. a generator) having a pipe construction or an exhaust system as disclosed herein.
  • a stationary unit e.g. a generator
  • Figure 1 shows a pipe construction 10 according to an embodiment of the invention. This is preferably a pipe construction 10 for integration into an exhaust system of a vehicle (not shown). For better visibility of the components arranged in the tube 12, the tube 12 is shown in section.
  • the pipe structure 10 includes a pipe 12 for carrying a fluid.
  • the pipe is designed to guide an exhaust gas from an internal combustion engine of the vehicle. It is therefore conceivable that the pipe 12 of the pipe construction is fluidly connected to an exhaust system (not shown) of the vehicle or forms part of this exhaust system in sections.
  • the tube 12 can have an axial direction A, a radial direction R (e.g. oriented orthogonally to the axial direction A) and a circumferential direction U.
  • the tube can have a longitudinal axis L.
  • the tube 12 also has a tube cross section 13.
  • the pipe cross section 13 is preferably oriented normal to the axial direction A.
  • the pipe cross section can e.g. B. have the shape of a circular disk.
  • the pipe cross section can e.g. B. be limited by an inner circumference of the tube 12.
  • the pipe construction 10 has at least one collecting pipe 14. It is possible that the pipe construction comprises several, in particular at least two or three or four or five or six or seven or eight or nine, collecting pipes 14. In Figure 1 a possible embodiment with several collecting pipes 14a-e, namely with five collecting pipes 14a-e, is shown.
  • the collecting pipes 14a-e each comprise two open pipe ends (e.g. each arranged at the ends of their respective longitudinal axis 15) and at least one opening 16 (e.g. bore) for removing fluid from the pipe cross section 13 (e.g . in a lateral surface of the at least one collecting pipe 14).
  • each of the collecting pipes 14a-e each comprise several openings.
  • Figure 1 A possible exemplary embodiment is shown in which each of the collecting pipes 14a-e has several openings in each case Figure 2 are designated by reference numerals 16a-f as an example of the collecting pipe 14b. It is conceivable that, on the other hand, no opening is arranged on the opposite section of the lateral surface of the respective collecting pipe 14a-e (see Figure 4 ).
  • the plurality of adjacent openings 16a-f can be arranged equidistant from one another and (e.g. the first opening 16a and the last opening 16f) from the inner walls of the tube 12, as seen in a longitudinal direction of the collecting pipe 14.
  • the openings 16a-f can z. B. have the same or different cross section on a manifold 14 and/or expediently have the same or different cross sections on each manifold 14.
  • the openings 16a-f can z. B. be round, in particular as a substantially round, in particular circular, hole.
  • any other suitably suitable shape is also conceivable, for example a slot shape or an oval shape.
  • the collecting pipes 14a-e are arranged in the pipe cross section 13 (see Figure 2 ).
  • the collecting pipes 14a-e protrude into the pipe cross section 13.
  • the collecting pipes 14a-e extend over the entire pipe cross section 13.
  • the pipe construction 10 further includes a collecting space 18.
  • the collecting space 18 is fluidly connected to the two open pipe ends. Fluid removed from the pipe cross section 13 via the collecting pipes 14a-e via the plurality of openings 16a-f can be fed to a measuring device 20 via the collecting space 18.
  • the collecting space 18 can be arranged outside the tube 12 and preferably extend at least in sections along an outer circumference of the tube 12.
  • the collecting space 18 can be designed as an annular chamber.
  • the collecting space 18 can be delimited on the inside by the tube 12.
  • the collecting space 18 can extend coaxially to the tube 12 (e.g. at least in sections).
  • the collecting space 18 is optionally set up to mix (e.g. homogenize) the fluid removed through the at least one collecting pipe 14 and to supply it to the measuring device 20 in mixed form.
  • the collecting space 18 can have a merging chamber 18.1 in order to combine removed fluid (e.g. to mix and/or homogenize) and to supply it to the measuring device 20.
  • removed fluid e.g. to mix and/or homogenize
  • the measuring device 20 can be arranged in the merging chamber 18.1. Alternatively or additionally, the return area 22 can be arranged in the merging chamber 18. 1.
  • the merging chamber 18. 1 can protrude from the collecting space 18 (e.g. axially). It is conceivable that the merging chamber 18.1 is arranged axially offset from the collecting pipes 14a-e.
  • the merging chamber 18.1 has a smaller fluid intake volume than the collecting space 18.
  • the merging chamber 18.1 can extend over a maximum of 30%, 20% or 10% of the outer circumference of the tube 12.
  • the collecting space 18 extends over at least 70%, 80% or 90% or essentially 100% of the outer circumference of the tube 12.
  • the collecting space 18 can have a first region in which one of the pipe ends is fluidly connected to the collecting space 18. Furthermore, the collecting space 18 can have a second area (e.g. the merging chamber 18.1) in which the measuring device 20 is arranged. The first area and the second area can be arranged offset from one another in the circumferential direction U of the tube 12.
  • the measuring device 20 can include an alignment axis 21 (e.g. a longitudinal axis).
  • the collecting pipes 14a-e can preferably each have a longitudinal axis, of which in Figure 1 As an example, only one longitudinal axis 15 of the collecting pipe 14b is shown and is provided with a reference number.
  • the alignment axis 21 of the measuring device 20 can be arranged transversely and/or skewed to the longitudinal axis 15 of the collecting pipe 14b (and, for example, also transversely and/or skewed to each of the longitudinal axes of the further collecting pipes 14a, 14c-e).
  • the longitudinal axis 15 of the collecting pipe 14c is the axis along the largest spatial extent of the collecting pipe 14c (or the measuring device 20) (see, for example, Figures 1 or 2 ).
  • a first of the two pipe ends of each of the collecting pipes 14a-e can be on a first region of the pipe cross section 13 (e.g. on the im Figure 1 shown inner wall section of the tube 12) can be fluidly connected to the collecting space 18.
  • a second of the two pipe ends of each of the collecting pipes 14a-e can be fluidly connected to the collecting space 18 at a second region of the pipe cross section 13 opposite the first region.
  • the at least one collecting pipe 14 can extend orthogonally to the longitudinal axis L of the pipe 12.
  • the collecting pipes 14a-e can extend over a total width of the pipe cross section.
  • Individual collecting tubes (as in Figure 1 exemplarily the collecting pipe 14c) can run through a center of the pipe cross section 13, while other collecting pipes (as in Figure 1
  • the collecting pipes 14a, 14b, 14d and 14e) can be arranged eccentrically with respect to the center of the pipe cross section 13, i.e. cannot run through the center of the pipe cross section 13.
  • the pipe construction 10 preferably has a return area 22 for returning fluid removed from the collecting space 18 into the pipe 12.
  • the measuring device 20 is arranged in and/or adjacent to the return area 22. It is also conceivable that the measuring device 20 extends (e.g. transversely) through the collecting space 18 and the return area 22 into the pipe 12.
  • the return area 22 may have a passage opening 24 in the tube 12.
  • a first (e.g. wider, external) section 26 of the measuring device 20 can be arranged in the collecting space 18.
  • a second (e.g. slimmer, internal) section 28 of the measuring device 20 can protrude through the passage opening 24 into the tube 12.
  • the measuring device 20 can have at least one inlet opening through which removed fluid can be introduced into a measuring section 30 (e.g. a measuring chamber) of the measuring device 20. Furthermore, the measuring device can optionally have at least one outlet opening through which removed fluid can be returned to the tube 12.
  • the first section 26 has at least the inlet opening through which withdrawn fluid can be introduced into a measuring section of the measuring device 20, and/or the second section 28 has at least the outlet opening through which withdrawn fluid can be returned into the tube 12.
  • fluid flowing in the pipe cross section 13 can pass into the collecting space 18 via the openings of the collecting pipes 14a-e and the respective open ends of the collecting pipes 14a-e.
  • the (e.g. slot-shaped) collecting space 18 it can be guided along the outer circumference of the tube 12 to the measuring device 20.
  • the fluid can enter the measuring section 30, which is designed as a measuring chamber (see Figure 6 ), where a fluid measurement can take place.
  • the fluid can then be returned to the tube 12 through the outlet openings of the inner section 28.
  • the return area 22 can have a gap 23 (e.g. a circumferential gap extending around the measuring device 20).
  • a gap 23 e.g. a circumferential gap extending around the measuring device 20.
  • fluid taken via the gap 23 e.g. laterally past the measuring device 20 and/or bypassing the measuring section 30 of the measuring device 20
  • the measuring device 20 preferably does not rest on wall sections of the passage opening 24.
  • the gap 23 can be arranged between the second section 28 and a wall section of the tube 12 which has the passage opening 24 (see Fig. 6 ).
  • the external section 26 is preferably an external section 26 of a sensor protective cap.
  • the internal section 28 is preferably an internal section 28 of the sensor protective cap.
  • the pipe cross section 13 can have a pipe diameter D.
  • the collecting space 18 can extend along an axial direction A of the tube 12 over a length which corresponds to at least 50%, at least 75%, at least 100%, at least 125% or at least 150% of the tube diameter D.
  • the collecting space 18 can have a longitudinal extent up to the measuring device 20, which corresponds to at least 50%, at least 75%, at least 100%, at least 125% or at least 150% of the pipe diameter D.
  • the collecting space 18 preferably has a clear gap 25 (e.g. in a radial direction of the tube 12) of at most 5%, at most 10%, at most 15% or at most 20% of the tube diameter D.
  • the collecting pipes 14a-e can each have a pipe diameter d, of which in Figure 3
  • the pipe diameter d of the central collecting pipe 14c is shown as an example is. All collecting pipes 14a-e preferably have the same pipe diameter d.
  • the pipe diameter d of the collecting pipes 14a-e can correspond to a maximum of 5%, a maximum of 10%, a maximum of 15% or a maximum of 20% of the pipe diameter D of the pipe cross section 13.
  • the collecting pipes 14a-e can be arranged offset from one another in a radial direction R of the pipe 12.
  • the collecting pipes 14a-e preferably extend parallel to one another.
  • the collecting pipes 14a-e are arranged equidistant from one another and spaced from an inner wall of the pipe 12.
  • the plurality of collecting pipes 14a-e can be arranged offset from one another (e.g. offset from one another in a step-like manner) in an axial direction A of the pipe 12 (see, for example, Figure 4 ). It is conceivable that the collecting pipes 14a-e form a lattice structure when viewed in the axial direction A (see Figure 5 ).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP23195991.7A 2022-09-21 2023-09-07 Structure de tuyau, système d'échappement comprenant une structure de tuyau et véhicule comprenant un système d'échappement ou une structure de tuyau Pending EP4343125A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022124283.8A DE102022124283A1 (de) 2022-09-21 2022-09-21 Rohrkonstruktion, Abgasanlage aufweisend eine Rohrkonstruktion und Fahrzeug aufweisend eine Abgasanlage oder eine Rohrkonstruktion

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EP4343125A1 true EP4343125A1 (fr) 2024-03-27

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245297B3 (de) * 2002-09-27 2004-01-08 Audi Ag Vorrichtung zur Messung von Gasinhaltsstoffen
US20050160840A1 (en) * 2004-01-28 2005-07-28 Allmendinger Klaus K. System, apparatus, and method for guiding an exhaust gas
EP1624295A1 (fr) 2004-08-03 2006-02-08 Siemens Schweiz AG Capteur pour la détermination de composants dans un milieu fluide
DE102011086447A1 (de) * 2010-12-01 2012-06-06 Ford Global Technologies, Llc Fortschrittliche Abgasprobenentnahmevorrichtung für einen Abgassensor
US20130213013A1 (en) * 2011-01-14 2013-08-22 Cummins Ip, Inc. Exhaust gas sensor module
US8756913B2 (en) * 2011-01-14 2014-06-24 Cummins Filtration Ip, Inc. Exhaust gas sensor module
DE102017101940A1 (de) * 2016-02-08 2017-08-10 Ford Global Technologies, Llc Feinstaubsensor
EP3978896A1 (fr) * 2020-09-30 2022-04-06 Faurecia Emissions Control Technologies, USA, LLC Dispositif d'échantillonnage circulaire pour un capteur de gaz d'échappement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201908A1 (de) 2014-02-03 2015-08-06 Duerr Cyplan Ltd. Verfahren zur Führung eines Fluidstroms, Strömungsapparat und dessen Verwendung
AT515726B9 (de) 2014-05-12 2018-10-15 Avl List Gmbh Vorrichtung zum ortsaufgelösten erfassen und/oder extrahieren von zumindest einer gaskomponente in einem strömenden gas
DE102016214886A1 (de) 2016-08-10 2018-02-15 Mahle International Gmbh Ladeluftkühler, insbesondere für ein Kraftfahrzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245297B3 (de) * 2002-09-27 2004-01-08 Audi Ag Vorrichtung zur Messung von Gasinhaltsstoffen
US20050160840A1 (en) * 2004-01-28 2005-07-28 Allmendinger Klaus K. System, apparatus, and method for guiding an exhaust gas
EP1624295A1 (fr) 2004-08-03 2006-02-08 Siemens Schweiz AG Capteur pour la détermination de composants dans un milieu fluide
DE102011086447A1 (de) * 2010-12-01 2012-06-06 Ford Global Technologies, Llc Fortschrittliche Abgasprobenentnahmevorrichtung für einen Abgassensor
US20130213013A1 (en) * 2011-01-14 2013-08-22 Cummins Ip, Inc. Exhaust gas sensor module
US8756913B2 (en) * 2011-01-14 2014-06-24 Cummins Filtration Ip, Inc. Exhaust gas sensor module
DE102017101940A1 (de) * 2016-02-08 2017-08-10 Ford Global Technologies, Llc Feinstaubsensor
EP3978896A1 (fr) * 2020-09-30 2022-04-06 Faurecia Emissions Control Technologies, USA, LLC Dispositif d'échantillonnage circulaire pour un capteur de gaz d'échappement

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