EP3314140A1 - Viscocoupleur - Google Patents

Viscocoupleur

Info

Publication number
EP3314140A1
EP3314140A1 EP16729906.4A EP16729906A EP3314140A1 EP 3314140 A1 EP3314140 A1 EP 3314140A1 EP 16729906 A EP16729906 A EP 16729906A EP 3314140 A1 EP3314140 A1 EP 3314140A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling element
coupling
rotary body
rotation
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Withdrawn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
EP16729906.4A
Other languages
German (de)
English (en)
Inventor
Stephanie Larpent
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 International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3314140A1 publication Critical patent/EP3314140A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/02—Overheat protection, i.e. means for protection against overheating
    • F16D2300/021—Cooling features not provided for in group F16D13/72 or F16D25/123, e.g. heat transfer details
    • F16D2300/0212—Air cooling

Definitions

  • the present invention relates to a viscous coupling with a first rotary body and a second rotary body.
  • the invention further relates to a cooling arrangement with such a viscous coupling.
  • a viscous coupling also called a viscous coupling, usually has two rotational bodies coupled or coupled to one another via a fluid, wherein the fluid is provided or can be introduced into an interior space of the coupling.
  • the rotation of the one rotational body is transferable to the other rotational body due to the viscosity or fluid friction of the fluid provided between the rotational bodies.
  • heat which depends in particular on the viscous fluid and / or a rotational speed of the respective rotational body. It can be transmitted by higher differences between the rotational speeds of the rotating body in principle higher torques between the rotating bodies. However, this leads to an increased heat development in the coupling, which can lead to damage of the coupling, in particular of the fluid.
  • the first rotation body is designed as an inner rotation body arranged in the second rotation body, wherein the second rotation body is accordingly designed as an outer rotation body.
  • a fan wheel is mounted, which is driven by the coupled with the inner rotary body outer rotary body.
  • cooling fins are provided on a cover delimiting the interior of the coupling.
  • ner cooling structure provided which protrude axially from the lid. The cooling structure is in this case arranged in a radially limited receptacle of the lid or the impeller.
  • the present invention therefore deals with the problem of providing for a viscous coupling of the type mentioned and for a cooling arrangement with such a coupling improved or at least specify other embodiments, which are characterized in particular by improved cooling and / or increased efficiency.
  • the present invention is based on the general idea to provide a cooling structure in a viscous coupling, which is arranged on a cover of the coupling and which has at least one cooling element which projects radially beyond the associated cover.
  • a surface contributing to the cooling of the clutch is increased, so that an efficient cooling of the clutch takes place.
  • the radial outer side of the cover is subjected to an intensified flow, in particular air flow, so that the at least one cooling element uses this flow or rotational flow for improved cooling of the coupling through the radial projection of the cover.
  • This improved cooling prevents this by Windings caused damage to the clutch, in particular a fluid of the clutch, or at least reduces this damage. This makes it possible, in particular, to transmit higher torques through the clutch and thus to increase the efficiency of the clutch.
  • the viscous coupling has a first rotary body and a second rotary body.
  • the rotational bodies can be coupled to one another via the fluid, the fluid for this purpose having a sufficient viscosity and in particular being able to be a fluid.
  • the fluid is provided in an interior of the coupling, it being conceivable that the fluid is permanently arranged in the interior or can be introduced into the interior if necessary.
  • the second rotary body has at least one such lid, which limits the interior at least partially. On the lid, such a cooling structure for cooling the second rotating body and thus the coupling is mounted axially on the outside.
  • the cooling structure has a plurality of cooling ribs, which protrude axially from the associated lid.
  • the cooling structure has at least one such cooling element which projects axially and projects radially beyond the associated cover.
  • the axial direction and the radial direction relate to rotational axes of the rotational bodies and thus to the direction of rotation of the rotational body.
  • the cooling structure mounted axially on the outside of the cover is attached to the side of the cover which is axially remote from the interior.
  • the first rotation body can be arranged at least partially in the second rotation body. Accordingly, the first rotational body may be referred to as an inner rotational body and the second rotational body as an outer rotational body.
  • the cooling by means of the cooling structure via the cooling fins and the at least one cooling element, in particular by convection. That is, the cooling fins and the at least one cooling element exchange heat with the environment. In addition, a heat exchange between the cooling structure and the rotary body takes place, so that this leads to a cooling of the second rotating body and thus the coupling.
  • the respective rotary bodies can have corresponding coupling elements. It is conceivable, for example, that the rotary bodies have intermeshing lamellas, between which the fluid is provided.
  • the attached to the cover cooling structure can in principle be made separately from the lid and attached to the lid. Also conceivable cooling structures, in which in particular the cooling fins are formed on the lid.
  • the respective cooling element can in principle have any desired shape. It is conceivable that the respective cooling element has a rib-like shape.
  • the first rotational body can be driven by the second rotational body. It is also conceivable that the first rotati- Ons stresses drives the second body of revolution. In this case, the first rotary body can be driven by a drive shaft.
  • the coupling according to the invention can be used in any application or arrangement.
  • a component of the vehicle in particular a heat exchanger of the vehicle, can be cooled by the fan wheel.
  • at least one such cooling element uses, in addition to the rotational flow, the blower flow generated by the blower wheel for improved heat exchange with the environment and thus improved cooling of the clutch
  • the impeller advantageously has a plurality of blades, each having one of the coupling, in particular the second body of revolution, facing blade root.
  • the blades are rotatably mounted on their blade feet on the coupling, in particular on the second rotary body.
  • the cooling elements and / or the cooling ribs are arranged distributed in the circumferential direction or rotational direction.
  • embodiments are advantageous in which the cooling fins and / or the at least one cooling element are arranged distributed uniformly in the direction of rotation.
  • the at least one cooling element and the cooling fins can be arranged arbitrarily relative to each other. It is conceivable, for example, to arrange at least one such cooling element spaced apart from at least one such cooling fin. In particular, it is conceivable to arrange at least one such cooling element at a distance from the cooling fins.
  • At least one such cooling element is mechanically connected to at least one such fin.
  • at least one such cooling element rests against at least one such cooling rib.
  • the cooling element can be considered as a radial extension of the cooling fin.
  • At least one such cooling element and at least one such cooling fin in one piece.
  • at least one such cooling element and at least one such cooling fin form a unit and, in particular, are formed of the same material. This reduces the number of required components of the clutch, so that the coupling can be made easier and / or cheaper.
  • the respective cooling element can in principle have a plane and / or a straight course in the radial direction.
  • At least one such cooling element has a curved shape with respect to the radial direction.
  • a curved shape can in particular serve to reduce the flow resistance caused by the cooling element during operation of the coupling.
  • Such a curvature may also serve to provide an operation of the clutch, the means during the rotation of the second body of revolution to increase the area exposed to the rotational flow and / or the fan flow. This results in an improved heat exchange between the cooling element and the environment and thus to an improved cooling of the clutch.
  • At least one such cooling element is curved against the direction of rotation of the second body of revolution.
  • the flow resistance caused by the cooling element can be reduced and / or the area of the cooling element exposed to the rotational flow and / or the fan flow can be increased.
  • Preferred embodiments provide that in the cooling arrangement at least one such cooling element is arranged in the direction of rotation between the blade roots of two adjacent blades in the direction of rotation. Since the adjacent blades are arranged spaced apart in the direction of rotation, an increased blower flow occurs between the blades, in particular between the blade roots, during operation of the clutch or the fan wheel. By arranging the cooling element between the blade roots, the cooling element is exposed to this increased blower flow and thus more cooled. This results in improved cooling of the clutch.
  • At least one such cooling element in the direction of rotation in the region of at least one such blade, in particular of such a blade root, so that the cooling element at least partially covers this blade radially.
  • the cooling element influences the flow resistance or the fan flow generated by the blower comparatively slightly.
  • the respective, separate from the cooling fins formed cooling element can be attached separately to the cooling structure.
  • annular body from which at least one such cooling element, preferably a plurality of such cooling elements, protrude radially, in particular radially outward.
  • This can be realized by a corresponding connection of the annular body with the cooling structure, in particular with at least one such fin, a simple attachment of the protruding from the annular body at least one cooling element on the cooling structure.
  • the annular body is preferably designed such that it can be mounted radially on the outside of the cooling fins. This means that the annular body can be pushed onto the cooling structure, in particular onto the cooling ribs, in particular in the axial direction. As a result, an oversight of the cooling structure with such cooling elements is considerably simplified. In addition, such a heat sink allows to provide cooling structures without such cooling elements with such cooling elements. The annular body having the cooling elements can therefore be used for retrofitting such couplings or such cooling structures.
  • the second rotary body can also have two such covers which delimit the interior space. It is conceivable that both lids are each provided with such a cooling structure.
  • the cooling structures can NEN be this same or different. In particular, it is conceivable to provide the cooling structures each with different cooling elements.
  • such a cooling element is configured as a common cooling element of both cooling structures.
  • such a cooling element is mechanically connected to at least one cooling rib of the respective cooling structure.
  • at least one such cooling element bears against at least one cooling rib of the respective cooling structure.
  • At least one such cooling element projects radially beyond the associated cover and the other cover and projects radially beyond the other cover.
  • the cooling structure can in principle be made of any material.
  • the cooling structure is advantageously made of a material having an increased thermal conductivity.
  • the cooling structure is made of a metal or metal-containing material, for example of a light metal or an alloy. The same applies to the respective lid.
  • the cooling structure may be attached in any way on the associated lid. It is conceivable, for example, to connect the lid and the cooling structure indirectly. In preferred embodiments, the cooling structure abuts axially on the associated cover. In this case, it is conceivable, in particular, for the cooling structure, in particular the cooling ribs, to be formed on the cover.
  • any fluid can be used as the fluid, as long as the fluid has a coupling between the rotational bodies by means of fluid friction or viscosity. laubt.
  • the fluid may in particular be a liquid.
  • oils For example, reference is made to silicone oils.
  • the rotationally fixed in the cooling arrangement on the coupling, in particular on the second body of revolution, attached impeller may be mounted in any manner on the coupling. It is conceivable, for example, a direct connection between the impeller and the outer body of revolution. Also conceivable are variants in which the impeller is indirectly connected to the outer rotary body.
  • the impeller may in this case be formed, for example, as a fan, as a fan and the like.
  • the impeller is preferably formed as a fan. Accordingly, the blower flow is fan flow.
  • the fan may be designed as an axial or a shell fan.
  • the blades of the blower wheel and the at least one cooling element can be formed or manufactured separately.
  • the blades of the impeller may be made of any material.
  • the blades can in particular be made of plastic.
  • the fan wheel is preferably arranged in the region of that cooling structure, which has cooling elements with smaller radial lengths in comparison to other cooling structures.
  • the impeller is arranged in particular on the side facing away from at least one cooling element side of the cooling structures, said cooling element having a first radial length which is greater than a second radial length of such a cooling element of the other, the further lid assigned cooling structure.
  • the cooling elements and the blades, in particular the blade roots, may have any orientation relative to each other.
  • the blades of the fan wheel and at least one such cooling element may be curved in opposite directions.
  • the blades of the impeller may be curved in the direction of rotation of the second rotary body or of the fan, while the cooling elements are curved counter to the direction of rotation. This is what happens in particular to an improved use of the fan flow generated by the impeller and thus to an improved cooling of the clutch.
  • FIG. 2 is a perspective view of the coupling of FIG. 1,
  • FIG. 3 is a perspective view of the coupling in another embodiment
  • FIG. 4 shows a cooling arrangement with the coupling in a further exemplary embodiment
  • 5 is a detail view of FIG .. 4
  • FIGS. 1 and 2 show a viscous coupling 1.
  • the coupling 1 has a first rotary body 2 and a second rotary body 3.
  • the second rotary body 3 has two opposite cover 4, which limit an inner space 5 of the coupling 1.
  • the first rotary body 2 in the interior 5 and thus in the second rotary body 3 is arranged.
  • the first rotary body 2 is an inner rotary body 6, which is arranged in the second rotary body 3 as an outer rotary body 7.
  • the first rotary body 2 and the second rotary body 3 can be coupled to one another via a fluid which is introduced into the interior 5 or can be introduced and is thus provided.
  • the fluid causes a fluid friction and accordingly a viscous coupling of the rotary bodies 2, 3.
  • the rotary bodies 2, 3 have lamellae 8 intermeshing with one another in the interior 5.
  • the first rotary body 2 is driven by a shaft 9 of a drive device 10, for example a motor vehicle, not shown, and thus drives the second rotary body 3.
  • the shaft 9 and the rotary body 2, 3 rotate about a common axis of rotation 1 1, so that it comes in coupled rotational bodies 2, 3 to a rotation in a direction of rotation 12.
  • the respective cover 4 is axially on the outside and thus provided on the side facing away from the interior 5 side with a cooling structure 13.
  • the respective cooling structure 13 is attached to the associated cover 4, so that it rotates or rotates with the associated cover 4.
  • the cover 4 of the second rotary body 3 are rotatably connected to each other.
  • the respective cooling structure 13 has axially projecting and extending in the radial direction 15 cooling fins 15, which are arranged distributed uniformly in the circumferential direction or rotation direction 12.
  • the cooling structure 13 also has a cooling element 16 which projects axially and projects radially beyond the associated cover 4, the cooling element 16 shown in FIGS. 1 and 2 projecting radially beyond both covers 4.
  • the cooling fins 15 and the cooling element 16 serve to cool the second rotation body 3 and thus the coupling 1.
  • the fluid provided in the interior 5, in particular the silicone oil provided in the interior 5, is cooled during operation of the clutch 1. Cooling takes place here by confectioning, in that the cooling fins 15 and the cooling element 16 exchange heat with the environment.
  • the cooling fins 15 and the cooling element 16 are made of a metal or a metal-containing material.
  • the cooling fins 15 and the cooling element 16 of a corresponding flow or rotational flow, in particular air flow, exposed, whereby the Convection or heat exchange and thus the cooling of the clutch 1 is improved.
  • the cooling element 16 is formed like a rib and has a curvature with respect to the direction of rotation 12.
  • the cooling element 16 is curved relative to the radial direction 14.
  • the cooling element 16 is curved counter to the direction of rotation 12, so that it causes a reduced flow resistance during operation of the coupling 1 and / or provides an enlarged area exposed to the rotational flow.
  • the cooling element 16 is produced separately from the cooling ribs 15 and radially outward. CK mineral attached to one of the cooling fins 15. Accordingly, the cooling element 16 can be considered as an extension of this cooling fin 15.
  • FIG. 3 shows another embodiment of the coupling 1.
  • a plurality of such cooling elements 16 are provided, which are arranged distributed uniformly in the circumferential direction or rotation direction 12.
  • at least one of the cooling fins 15 is arranged at a distance from the cooling elements 16, while at least one of the cooling fins 15 is mechanically connected to at least one such cooling element 16. That is, there are cooling fins 15, which are each connected to such an associated cooling element 16, wherein one of the cooling elements 16 may be formed integrally with the associated cooling fin 15 or of the same material.
  • the cooling elements 16 each have a shape that is curved counter to the direction of rotation 12.
  • cooling structure 13 has a smaller number of cooling elements 16 than on cooling ribs 15. It can also be seen in FIG. 3 that both the cooling structure 13 visible in the foreground in the representation of FIG. 3 and the opposite cooling structure 13 have such cooling elements 16. In this case, the cooling elements 16 of the visible in the foreground cooling structure 13 on a first radial length 17 ', which is greater than a second radial length 17 "of the cooling elements 16 of the rear cooling structure thirteenth
  • FIG. 4 shows a cooling arrangement 18, which comprises such a coupling 1 and an impeller 19, which is designed as a fan wheel 19 ', which is configured as a shroud fan 19 ". 3, wherein the cooling elements 16 are mounted radially externally on the cooling fins 15 via an annular body 20. In this case, the cooling elements 16 protrude radially outward from the annular body 20.
  • FIG. 4 also shows that the impeller 19 is in the circumferential or rotational direction 12 evenly distributed blades 21 has.
  • the blades 21 each have a blade root 22, which faces the clutch 1 or the second rotary body 3.
  • the blades 21 of the impeller 19 are on the
  • a carrier which is not visible here, can be arranged between the blade roots 22 and the second rotary body 3. It is also conceivable to mechanically connect the blade roots 22 directly to the second rotary body 3. It is also conceivable to connect at least one such blade 21, in particular via the associated blade root 22, with at least one such cooling element 16 in order to simultaneously attach the blade 21 and the at least one cooling element 16 to the coupling 1. As a result, the installation effort is significantly reduced. Overall, this results in a rotationally fixed connection of the impeller 19 with the second rotary body 3, so that the impeller 19 and the blades 21 rotate with the second rotary body 3 in the direction of rotation 12.
  • the impeller 19 In operation, the impeller 19 generates a fan flow or a fan flow, which are exposed to the cooling elements 16 in particular. As a result, the cooling elements 16 are thus exposed to an increased total flow, whereby the heat exchange of the cooling elements 16 with the environment, in particular the air, amplified and the cooling of the clutch 1 is improved.
  • Fig. 4 it can be further seen that the blade 21 and the cooling elements 16 are curved in opposite directions. In this case, the blades 21 are curved in the direction of rotation 12, while the cooling elements 16 are curved counter to the direction of rotation 12. As a result, the respective cooling element 16 of the fan flow is increasingly exposed and thus improves the cooling of the clutch 1. 4, it can also be seen that a plurality of cooling elements 16 at least one of the blades 21 in the region of the associated blade root 22 ra- overlap dial. As a result, the fan flow is disturbed as little as possible in the axial direction, while the cooling elements 16 are further exposed to the blower flow in the direction of rotation. In addition, a plurality of cooling elements 16 are arranged in the circumferential direction or rotational direction 12 between the blade roots 22 of two blades 21 which are adjacent in the direction of rotation 12.
  • Fig. 5 is a detail view of the arrangement 18 shown in Fig. 4, wherein the better understanding of only such a cooling element 16 is shown.
  • This cooling element 16 is arranged in the circumferential direction or rotation direction 12 between two adjacent blades 21, in particular between the associated blade roots 22.
  • arrows 23 symbolize the blower flow which generates the blower wheel 19 during operation. It can be seen that in the region between the adjacent blades 21, in particular of the adjacent blade roots 22, a stronger fan flow prevails, so that the cooling element 16 is exposed to a stronger fan flow and thus contributes to an improved cooling of the clutch 1.
  • cooling elements 16 shown in FIGS. 1 to 5 Due to the embodiment of the cooling elements 16 shown in FIGS. 1 to 5, on the one hand, improved cooling of the coupling 1 and, on the other hand, a low aerodynamic disturbance of the fan flow occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Viscocoupleur (1) comprenant un premier corps rotatif (2) et un second corps rotatif (3) qui peuvent être couplés par l'intermédiaire d'un fluide présent dans un espace interne (5). Le second corps rotatif (3) présente au moins un couvercle (4) délimitant l'espace interne, sur lequel est fixée une structure de refroidissement (3) comprenant des ailettes de refroidissement (15). Un refroidissement et/ou une efficacité accrue du viscocoupleur (1) résultent de ce que la structure de refroidissement (13) présente au moins un élément de refroidissement (6) faisant saillie dans la direction axiale, qui dépasse radialement du couvercle (4) correspondant. L'invention concerne en outre un dispositif de refroidissement (18) doté d'un tel viscocoupleur (1) et d'une turbine de ventilateur (19). (Fig. 4)
EP16729906.4A 2015-06-25 2016-06-16 Viscocoupleur Withdrawn EP3314140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015211856.8A DE102015211856A1 (de) 2015-06-25 2015-06-25 Viskose Kupplung
PCT/EP2016/063888 WO2016207055A1 (fr) 2015-06-25 2016-06-16 Viscocoupleur

Publications (1)

Publication Number Publication Date
EP3314140A1 true EP3314140A1 (fr) 2018-05-02

Family

ID=56134360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16729906.4A Withdrawn EP3314140A1 (fr) 2015-06-25 2016-06-16 Viscocoupleur

Country Status (3)

Country Link
EP (1) EP3314140A1 (fr)
DE (1) DE102015211856A1 (fr)
WO (1) WO2016207055A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019006921A1 (de) * 2019-09-26 2021-04-01 Ziehl-Abegg Se Kühlmodul sowie Ventilator mit einem solchen Kühlmodul
DE102022123882A1 (de) 2022-09-19 2024-03-21 Hanon Systems Efp Deutschland Gmbh Vorrichtung zum Leiten von Kühlluft an einer Motoraufnahme für einen Ventilatormotor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194372A (en) * 1963-03-06 1965-07-13 Schwitzer Corp Variable volume coupling mechanism
US3272292A (en) * 1963-10-11 1966-09-13 Eaton Yale & Towne Viscous fluid clutch having heat dissipation means
GB1446902A (en) * 1973-11-15 1976-08-18 Holset Engineering Co Fluid coupling
DE3107198A1 (de) * 1981-02-26 1982-09-09 Fichtel & Sachs Ag, 8720 Schweinfurt Gehaeusedeckel fuer viskose-luefterkupplung
JPH0823376B2 (ja) * 1986-12-16 1996-03-06 臼井国際産業株式会社 温度感応型流体式フアン・カツプリング装置
US5330040A (en) * 1992-10-05 1994-07-19 General Motors Corporation Ringed cover and seal for a viscous fluid clutch and method of making
DE4441039C1 (de) * 1994-11-18 1996-05-15 Fichtel & Sachs Ag Flüssigkeitsreibungskupplung mit einem Kühlluftventilator
US5960918A (en) * 1998-03-27 1999-10-05 Behr America, Inc. Viscous clutch assembly
US5975265A (en) * 1998-06-24 1999-11-02 Behr America, Inc. Fabrication of fluid coupling
US8186494B2 (en) * 2004-08-30 2012-05-29 Borg Warner Inc. Electronically controlled fluid coupling device with fluid scavenge control and enhanced cooling
DE102006008576A1 (de) * 2006-02-22 2007-08-30 Behr Gmbh & Co. Kg Lüfterantriebsvorrichtung
DE102007037733A1 (de) * 2006-08-10 2008-02-14 Behr Gmbh & Co. Kg Lüfterantriebsvorrichtung, Lüfter
DE102008063702A1 (de) * 2008-12-19 2010-06-24 Behr Gmbh & Co. Kg Lüfterantrieb, insbesondere für ein Kraftfahrzeug
DE102013222261A1 (de) * 2013-10-31 2015-04-30 MAHLE Behr GmbH & Co. KG Viskosekupplung für einen Antriebsstrang eines Kraftfahrzeuges

Also Published As

Publication number Publication date
DE102015211856A1 (de) 2017-01-12
WO2016207055A1 (fr) 2016-12-29

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