EP4174295A1 - Broche de raccordement - Google Patents

Broche de raccordement Download PDF

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Publication number
EP4174295A1
EP4174295A1 EP22197618.6A EP22197618A EP4174295A1 EP 4174295 A1 EP4174295 A1 EP 4174295A1 EP 22197618 A EP22197618 A EP 22197618A EP 4174295 A1 EP4174295 A1 EP 4174295A1
Authority
EP
European Patent Office
Prior art keywords
pin
cooling
area
connection
exhaust gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22197618.6A
Other languages
German (de)
English (en)
Inventor
Holger BRENNER
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
Purem GmbH
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 Purem GmbH filed Critical Purem GmbH
Publication of EP4174295A1 publication Critical patent/EP4174295A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H05B3/08—Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F01N3/2026—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • 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
    • F01N2240/16—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 an electric heater, i.e. a resistance heater
    • 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
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities

Definitions

  • the present invention relates to a connecting pin which is used, for example, in a connecting unit for making electrical contact with a heating conductor of an exhaust gas heater of an exhaust system of an internal combustion engine, in order to make electrical contact with an exhaust gas heater which is arranged in an exhaust gas routing component and around which an exhaust gas flow of an internal combustion engine guided in the exhaust gas routing component can flow.
  • connection units used in connection with exhaust systems of internal combustion engines comprise a generally one-piece connection pin which is carried in a pin carrier in an electrically insulated manner and is carried via the pin carrier on an exhaust gas routing component, for example an exhaust pipe or a housing carrying the exhaust gas.
  • the connection pin protrudes with an inner connection area into the inner volume of the exhaust gas routing component and is electrically conductively connected in this inner connection area to a heat conductor connection area of a heat conductor of such an exhaust gas heater, for example by soldering.
  • the connection pin can be connected to a voltage source via a cable or the like.
  • the various components of an exhaust system are heated up by the exhaust gas flowing through them.
  • the operation of the exhaust gas heater also leads to heating of the various components carrying the heating current, in particular also the connection units used for the electrical connection to the heating conductor of the exhaust gas heater or the connection pins of the same.
  • a cable connected to such a connecting pin in the outer connection area is also heated, which cable generally has an electrically conductive core and a sheath made of electrically insulating material, for example plastic material. Excessive heating of the cable can damage the sheath and, in extreme cases, even cause it to ignite.
  • connection pin in particular for a connection unit for electrically contacting a heating conductor of an exhaust gas heater of an exhaust system of an internal combustion engine, in which excessive thermal loading of components in contact with it is avoided.
  • the provision of the cooling surface formation provides an enlarged surface on the connection pin, via which heat absorbed or generated in the connection pin can be emitted to the environment. Overheating, for example, of a cable connected to such a connector pin can thus be prevented.
  • cooling surface formation In order to be able to design such a cooling surface formation in an optimized manner independently of the structure of the connection pin, it is proposed that at least part of the cooling surface formation be formed on a cooling element fixed in the cooling area on the pin body.
  • An easy-to-implement, yet stable connection of the cooling element to the pen body can be achieved, for example, in that the cooling element is fixed to the cooling area by a press fit and/or material connection.
  • a large surface available for dissipating heat can be provided, for example, by the cooling element comprising a ring-like cooling element body surrounding the cooling area and a plurality of cooling ribs extending radially outwards from the cooling element body.
  • the cooling surface formation can comprise a plurality of cooling ribs which follow one another at a mutual distance in the direction of the longitudinal axis of the pin body and surround the longitudinal axis of the pin body in the manner of a ring.
  • the cooling surface formation can comprise a plurality of cooling ribs which follow one another at a mutual distance in the circumferential direction around the longitudinal axis of the pin body and preferably extend essentially in the direction of the longitudinal axis of the pin body.
  • a rib thickness can increase in the radially outward direction for at least one, preferably each, cooling rib.
  • the cooling element body of the cooling element can be pressed onto this radially widening cooling area when the cooling surface formation is provided on a cooling element.
  • At least part of the cooling surface formation can be formed as an integral part of the cooling area.
  • the cooling surface formation have at least one groove-like Depression, preferably a plurality of mutually spaced groove-like depressions, comprises the cooling area.
  • At least one groove-like indentation can be configured to preferably completely surround the longitudinal axis of the pin body and/or at least one groove-like indentation can be configured to extend preferably essentially in the direction of the longitudinal axis of the pin body.
  • the cooling surface formation In order to use the cooling surface formation to also achieve a shielding effect, in particular for the connection pin in a pin carrier, which is made of ceramic insulating material, for example, which is electrically insulated, it is proposed that the cooling area be arranged in the direction of the longitudinal axis of the pin body between the outer connection area and the lead-through area.
  • the invention further relates to a connection unit for making electrical contact with a heating conductor of an exhaust gas heater of an exhaust system of an internal combustion engine, comprising a connection pin designed according to the invention and carried in an electrically insulated manner on a pin carrier.
  • the terminal pin can be carried on the pin carrier by preferably ceramic insulating material.
  • the invention relates to an exhaust system for an internal combustion engine, comprising an exhaust gas heater arranged in an exhaust gas routing component and having a heat conductor with at least one heat conductor connection area, preferably two heat conductor connection areas, with assignment to at least one heat conductor connection area, preferably each heat conductor connection area, a connection unit constructed according to the invention is provided, with the pin carrier of the connection unit being fixed to the exhaust gas routing component and the connection pin of the connection unit passing through an opening provided in the exhaust gas routing component and being electrically conductively connected in its inner connection area to a heating conductor connection area of the heating conductor.
  • the Figures 1 and 2 show a section of an exhaust system, generally designated 10, of an internal combustion engine for a motor vehicle.
  • the exhaust system 10 comprises an exhaust gas routing component 12 of tubular design, in whose interior volume an exhaust gas flow emitted by an internal combustion engine is routed.
  • An exhaust gas heater 14 is arranged in the exhaust gas routing component 12 .
  • the exhaust gas heater 14 comprises a heating conductor 16, which is made of flat material in the exemplary embodiment shown, and has two heating conductor connection regions 18, 20. In each of the heating conductor connection regions 18, 20, the heating conductor 16, which is composed of several parts, for example, is connected to each other via connection units 22, 24 that are, for example, identical in construction a voltage source leading cables 26, 28 used as voltage supply lines electrically conductively connected.
  • connection units 22, 24, which are preferably structurally identical to one another, comprises a pin carrier 30 made, for example, of metal material, which is fixed in the area of a passage opening 32 of the exhaust gas routing component 12 on its outer surface, for example by welding or soldering, in order to produce a gas-tight seal.
  • a terminal pin, generally designated 36 is supported by electrically insulating material 34, such as a ceramic material, within the pin carrier 30 and electrically insulated therefrom.
  • the connecting pin 36 has a pin body 38 which is constructed in one piece or possibly composed of several parts and which is elongated in the direction of a longitudinal axis L of the pin body.
  • the pin body 38 is carried on the pin carrier 30 by means of the electrically insulating material 34 in its lead-through region 40 penetrating the pin carrier 30 .
  • the lead-through region 40 can be embedded in the electrically insulating material and can thereby be fixed to the pin carrier 30.
  • Other configurations are also conceivable, in which the lead-through area 40 is supported on the pin carrier 30 with respect to the pin carrier 30 via disk-like elements made of the electrically insulating material and prestressing elements or the like inserted therein.
  • the pin body 38 or the connecting pin 36 is connected to one of the heating conductor connecting areas 18, 20, in which in 2 illustrated example of the connection unit 22 to the heat conductor connection area 18, for example by soldering or welding mechanically stable and electrically conductively connected.
  • the cable 26 has a core 46 made, for example, of copper material or some other electrically conductive material, and a jacket 48 of electrically insulating material, for example plastic material, surrounding it.
  • the cable 26 has a connection element 50, which grips around the casing 48 in the manner of a clamp and is thus firmly connected to it.
  • the end region of the core 46 protruding beyond the jacket 48 is connected to the connection element 50 in an electrically conductive manner, for example by clamping and/or soldering.
  • the connecting element 50 also has a sleeve-like connecting area 52 which is pressed onto the outer connecting area 44 of the pin body 38 in the direction of the longitudinal axis L of the pin body and is thus connected to it in an electrically conductive and mechanically stable manner.
  • the pin body 38 can be designed to widen radially, for example conically, at least in its length section providing the outer connection area 44 in the direction of the inner connection area 42, so that a stable connection is achieved by pressing on the connection element 50.
  • the connection area 52 could be fixed to the outer connection area 44 by a fastening element, such as a nut or the like screwed onto the outer connection area, and/or by a material connection to the outer connection area 44 .
  • the pin body 38 or the connection pin 36 has a cooling area, generally designated 54.
  • a cooling surface formation generally designated 56, is provided on the connection pin 36, which provides a comparatively large surface area for thermal interaction with the ambient air surrounding the connection pin 36.
  • a cooling surface formation 56 described below in various configurations, is characterized in that it has a larger outer surface for thermal interaction with the ambient air than a connecting pin 36 constructed with a purely cylindrical outer surface in this length region, i.e. cooling region 54.
  • the embodiment example illustrated is the cooling surface formation 56 provided on a cooling element 58 which is separate from the pin body 38, that is to say designed as an independent component.
  • the cooling element 58 constructed, for example, with metal material has a sleeve-like cooling element body 60 which preferably has a ring-like closed structure and surrounds the cooling area 54 of the pin body 38 .
  • the cooling member 58 may be fixed to the pen body 38 by an interference fit.
  • the pin body 38 could also be designed to widen radially, for example conically, in its cooling area 54 in the direction of the inner connecting area 42 .
  • the cooling element 58 has heat transfer ribs 62 which extend radially outward away from the cooling element body 60 and surround the cooling element body 60 or the longitudinal axis L of the pin body in a ring-like manner.
  • the ring-like or plate-like cooling ribs 62 that follow one another in the direction of the longitudinal axis 38 of the pen body form ring-like or groove-like depressions 64 between them surface provided.
  • heat generated in the pin body 38 or the connecting pin 36 by the electric current flowing therein or by the exhaust gas flowing around the inner connecting area 42 can give off heat transferred to the latter to the air surrounding the cooling element 58 . Excessive heating of the cable 26 or 28 connected to a respective connection unit 22 or 24 can thereby be avoided.
  • connection unit or a connection pin for it is in 3 shown.
  • Components described above with reference to the Figures 1 and 2 correspond to the components described in terms of structure or function are denoted by the same reference numerals.
  • the at the in 3 Connection unit 22 shown forms the cooling surface formation 56 an integral part of the pin body 38 in its cooling area 54.
  • the cooling surface formation 56 also includes this embodiment, a plurality of cooling ribs 62 surrounding the longitudinal axis L of the pen body in a ring-like manner with ring-like or groove-like depressions 64 formed in between.
  • the provision of the plurality of cooling ribs 62 following one another in the direction of the longitudinal axis L of the pen body results in a comparatively large surface area provided at which heat can be transferred to the air surrounding the pen body 38 .
  • connection unit 22 A further modification of such a connection unit 22 is in 4 shown.
  • the cooling surface formation 56 comprises a cooling element 58 designed as a separate component with a cooling element body 60 surrounding the cooling region 54 of the pin body 54 in the manner of a ring.
  • a plurality of cooling ribs 62 extend radially outwards from the cooling element body 60, so that a fan-like or axial View of a star-like structure of cooling ribs 62 that are elongated in the direction of the pen body longitudinal axis L and have gaps 64 formed between them.
  • the rib thickness ie the dimension of the cooling ribs 62 in the circumferential direction, increases from radially inside to radially outside.
  • the cooling fins 62 provide end faces 66 of comparatively large dimensions in their radially outer end regions, which likewise make a contribution to the surface area that can be used for dissipating heat to the ambient air.
  • FIG figure 5 A further modified embodiment with a cooling surface formation 56 provided as an integral part of the cooling area 54 of the pen body 38 is shown in FIG figure 5 shown.
  • the cooling surface formation 56 comprises two groove-like depressions 68, 70 provided at an axial distance in the cooling region 54 and preferably surrounding the longitudinal axis L of the pin body in a ring-like manner without interruption Pen body 38 in the cooling area 54 and thus an increased thermal interaction with the ambient air.
  • such groove-like depressions could also be formed extending in the direction of the longitudinal axis L of the pen body.
  • axially extending groove-like depressions could also be formed between the two groove-like depressions 68, 70 annularly surrounding the longitudinal axis L of the pin body, as in FIG figure 5 illustrated by the groove-like indentation 72 shown with dashed lines.
  • the dimensioning of the cooling surface formation ie for example the number of cooling ribs or groove-like depressions, can be set depending on the amount of heat to be expected to be dissipated to the environment. For this purpose, the axial extent, the radial extent and also the number of cooling ribs or groove-like indentations can be selected accordingly.
  • the cooling fins can also be in the form of rod-like or pin-like projections that extend radially from the inside to the outside, which can be arranged one after the other in a ring-like structure in the circumferential direction around the longitudinal axis of the pin body and/or in a linear structure in the direction of the pin body -Longitudinal axis can be arranged consecutively.
  • Structures of this type that increase the surface area that can be used for dissipating heat to the environment can also be manufacturing-related contours, such as wavy undercuts, or draft angles when the pin body is manufactured as a cast part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Chimneys And Flues (AREA)
  • Resistance Heating (AREA)
EP22197618.6A 2021-10-29 2022-09-26 Broche de raccordement Pending EP4174295A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021128241.1A DE102021128241A1 (de) 2021-10-29 2021-10-29 Anschlussstift

Publications (1)

Publication Number Publication Date
EP4174295A1 true EP4174295A1 (fr) 2023-05-03

Family

ID=83457498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22197618.6A Pending EP4174295A1 (fr) 2021-10-29 2022-09-26 Broche de raccordement

Country Status (6)

Country Link
US (1) US20230137839A1 (fr)
EP (1) EP4174295A1 (fr)
JP (1) JP7485743B2 (fr)
KR (1) KR20230062433A (fr)
CN (1) CN116066212A (fr)
DE (1) DE102021128241A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4242434A1 (fr) * 2022-03-10 2023-09-13 Purem GmbH Agencement de traitement de gaz d'échappement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69501049T2 (de) * 1994-02-25 1998-03-26 Nippon Soken Elektrisch beheizbarer katalytischer Umwandler für einen Motor
EP2549074A1 (fr) * 2010-03-17 2013-01-23 Toyota Jidosha Kabushiki Kaisha Dispositif de contrôle des émissions d'échappement pour moteur à combustion interne
EP3905845A1 (fr) * 2020-04-30 2021-11-03 Purem GmbH Unité de connexion permettant de connecter une ligne d'alimentation électrique à un élément de connexion d'une installation de gaz d'échappement pouvant être chauffée

Family Cites Families (4)

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DE102021128241A1 (de) 2023-05-04
JP2023067843A (ja) 2023-05-16

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