EP2829701A1 - Compartiment moteur d'un véhicule motorisé comportant un vase d'expansion pour un système de refroidissement - Google Patents

Compartiment moteur d'un véhicule motorisé comportant un vase d'expansion pour un système de refroidissement Download PDF

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Publication number
EP2829701A1
EP2829701A1 EP20140178438 EP14178438A EP2829701A1 EP 2829701 A1 EP2829701 A1 EP 2829701A1 EP 20140178438 EP20140178438 EP 20140178438 EP 14178438 A EP14178438 A EP 14178438A EP 2829701 A1 EP2829701 A1 EP 2829701A1
Authority
EP
European Patent Office
Prior art keywords
bracket
engine compartment
expansion tank
support structure
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140178438
Other languages
German (de)
English (en)
Other versions
EP2829701B1 (fr
Inventor
Alessandro del Grosso
Fabio Visconti
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.)
FCA Italy SpA
Original Assignee
Fiat Group Automobiles SpA
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 Fiat Group Automobiles SpA filed Critical Fiat Group Automobiles SpA
Publication of EP2829701A1 publication Critical patent/EP2829701A1/fr
Application granted granted Critical
Publication of EP2829701B1 publication Critical patent/EP2829701B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs

Definitions

  • the present invention relates to a motor vehicle engine compartment provided with an expansion tank for a cooling system.
  • a motor vehicle engine is cooled by a cooling system using a mixture of water/ethylene glycol as a heat transfer fluid, and envisages an expansion tank fixed to a support structure arranged in the motor vehicle engine compartment.
  • the expansion tank is fixed to said support structure by screws, bolts, metal coupling elements, etc.
  • EP2375028 corresponds to the preamble of claim 1 and describes a bayonet-coupling between a support and the expansion tank, allowing for simple and quick expansion tank mounting without special tools. This solution provides a more rigid point to be by-passed during coupling so as to indicate to the installer when the expansion tank has reached a locked position.
  • Purpose of the present invention is to provide a motor vehicle engine compartment provided with an expansion tank for a cooling system, which allows to fulfill the necessity described above in a simple and economic way.
  • a motor vehicle engine compartment provided with an expansion tank for a cooling system, as defined in claim 1, is provided.
  • the reference number 1 denotes an expansion tank, constituting part of a cooling system which is arranged in a motor compartment 3 (partially illustrated) of a motor vehicle and which, in use, circulates a cooling fluid for removing heat from an internal combustion engine (not shown).
  • the engine compartment 3 has a structure 5, which supports the expansion tank 1 and, preferably, a heat exchanger, not shown, which also forms part of the cooling system.
  • the expansion tank 1 is fixed to a cross member 7, defining the upper end of the structure 5 and extending along a substantially horizontal direction, orthogonal to the motor vehicle travel direction.
  • the expansion tank 1 is fixed to a side portion, on the left according to the vehicle travel direction, at one end 9 of the cross member 7.
  • the portion 9 comprises an appendix 10, which horizontally protrudes with respect to the remaining part of the portion 9 and has a vertical through hole 11.
  • the cross section of the hole 11 is not circular, but is elongated along a horizontal axis 13, so as to define a slot.
  • the axis 13 is parallel to the cross member 7.
  • the cross section of the hole 11 is constant in the vertical direction, and the ends of the hole 11, along the axis 13, are defined by respective semi-cylindrical surfaces 15. Laterally, the hole 11 is delimited by two guide surfaces 16, which are vertical and parallel to the axis 13, face each other and are connected to one another by the surfaces 15.
  • the portion 9 comprises a supporting wall 20 being substantially horizontal, is arranged at a different height with respect to the hole 11, preferably at a greater height, and is also horizontally spaced apart from the hole 11.
  • the wall 20 is delimited by a face 21, extending along a direction 22 parallel to the axis 13 and defining a resting surface for two brackets 23 forming part of the expansion tank 1.
  • the wall 20 has at least one opening 24, which will be described in detail hereinafter, and is configured so as to bayonet-couple the brackets 23 to the cross member 7 along the direction 22.
  • the expansion tank 1 is made of plastic material, made from a single piece or from multiple pieces fixed to one another, and comprises a container 29, of a known type, adapted to receive the cooling liquid.
  • the container 29 has, at the upper end thereof, an opening 30 closed by a removable cap, not shown, and defines an internal cavity communicating with the remaining part of the cooling system by a fitting 31 which laterally protrudes from the container 29.
  • the expansion tank 1 For the coupling to the cross member 7, the expansion tank 1 comprises a positioning pin 33, which vertically protrudes downwards along an axis 34 starting from a support portion 35 defined, in particular, by the lower end of the container 29.
  • the pin 33 comprises a portion 36 which, along a horizontal direction 37 perpendicular to axis 13, has a width substantially equal to the distance between the guide surfaces 16, so as to be guided by the hole 11 along the axis 13 during the mounting of the expansion tank 1.
  • the direction 22 and the axis 13 are rectilinear.
  • the direction 22 may be curved.
  • the pin 33 comprises a terminal portion 38, which has a radial dimension greater than the hole 11 and is elastically deformable, radially inwards, so as to be axially inserted into the hole 11.
  • the portion 38 elastically returns to its original shape, snapping radially outwards over a lower edge 39 of the hole 11, so as to prevent the upward slippage of the pin 33 during installation and operation of the expansion tank 1.
  • the portion 36 comprises a fork defining the axial extension of the portion 36 and which consists of two arms 41 spaced apart from one another along the direction 37, so as to be able to radially flex inwards.
  • the portion 36 further comprises, two retaining teeth 43, protruding from the respective arms 41 towards the outside along the direction 37, so as to engage the edge 39 when the pin 33 has been inserted into the hole 11.
  • the coupling between the pin 33 and the hole 11 is not of a stable type, but has the main function of facilitating mounting and achieving a more stable coupling of the brackets 23.
  • brackets 23 are fixed with respect to the container 29, and arranged higher than the pin 33, being horizontally spaced apart from each other and advantageously laterally protrude from the container 29, thus are radially spaced from the axis 34. According to an alternative not shown, only one bracket 23 is provided.
  • each bracket 23 comprises a wall 44 parallel to the face 21 and at least one connecting appendix 46, which comprises, in turn, a vertical arm 47, which downwardly protrudes from the wall 44, and a cross fin 48, horizontally protruding from a lower end of the arm 47 and is vertically distanced from wall 44 by a length substantially equal to the thickness of the wall 20, so as to have, between the wall 44 and the fin 48, an empty space adapted to be engaged by an edge of the wall 20 for vertically locking the bracket 23.
  • each bracket 23 has a plurality of connecting appendixes 46, each of which engages a corresponding opening 24.
  • each opening 24 comprises an area 55 having such a size and a shape that the corresponding connecting appendix 46 can be vertically fitted with clearance; and an area 56, which is narrower than the area 55 so as to let the arm 47 slide along the direction 22, but axially retaining the fin 48.
  • the area 56 is defined by two edges parallel to the direction 22 and distanced by a length substantially equal to the thickness of the arm 47, for guiding the sliding of the arm 47 itself and to prevent translation of the coupling appendix 46 and, therefore, of the bracket 23 parallel to the direction 37.
  • each bracket 23 comprises a locking tooth 60, which is carried by the wall 44 and has sufficient elasticity for flexing upwards when the wall 44 is placed in contact with the face 21 during insertion and sliding of the connecting appendixes 46 into the openings 24.
  • the locking teeth 60 are engaged snap-wise by respective retaining seats 61 ( fig. 2 and 3 ) made in the wall 20, so as to prevent the reversal of the connecting appendixes 46 from respective areas 56 of the openings 24 and therefore permanently lock the brackets 23 and the entire expansion tank 1 along direction 22.
  • the connecting appendixes 46 and the locking teeth 60 are made in a single piece with the walls 44.
  • the bayonet-coupling between the brackets 23 and the cross member 7 may be defined by appendixes and/or by openings configured in a different way from that just described, but always so as to perform the same function.
  • the connecting appendixes 46 may be carried by the wall 20 and be engaged by respective edges of the wall 44.
  • the pin 33 in addition to the brackets 23 facilitates the bayonet-coupling during the mounting of the expansion tank 1 and helps to hold the expansion tank 1 in a fixed position with respect to the cross member 7.
  • the axial holding action exerted by the edge 39 on the retaining teeth 43 and the holding action exerted by the guide surfaces 16 on the pin 33 along the direction 37 are in addition to those exerted by the edges of the openings 24 upon the connecting appendixes 46.
  • connection to the cross member 7 is extremely stable and rigid, thus limiting possible breakage and vibration.
  • the mounting is extremely simple, thanks to the fact that two mounting movements are simply provided, namely a first movement vertically directed downwards, to rest said wall on the cross member 7, and a subsequent second movement directed along the direction 37 to lock the bracket 23 in a vertical direction and, thanks to the locking tooth 60, also along the direction 37 itself.
  • the various parts of the expansion tank 1 may have a different shape and size from those illustrated by way of example.
  • the connecting appendixes 46 could be replaced by appendixes or slides having an inverted T cross-section, rather than being L-shaped.
  • the position of the pin 33 and/or of the brackets 23 may be different from that described above; for example, the pin 33 may be supported by a further bracket fixed with respect to the container 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Motor Or Generator Cooling System (AREA)
EP14178438.9A 2013-07-24 2014-07-24 Compartiment moteur d'un véhicule motorisé comportant un vase d'expansion pour un système de refroidissement Active EP2829701B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000627A ITTO20130627A1 (it) 2013-07-24 2013-07-24 Serbatoio di espansione per un impianto di raffreddamento in un vano motore di un autoveicolo, e vano motore di un autoveicolo provvisto di tale serbatoio di espansione

Publications (2)

Publication Number Publication Date
EP2829701A1 true EP2829701A1 (fr) 2015-01-28
EP2829701B1 EP2829701B1 (fr) 2017-12-20

Family

ID=49304214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14178438.9A Active EP2829701B1 (fr) 2013-07-24 2014-07-24 Compartiment moteur d'un véhicule motorisé comportant un vase d'expansion pour un système de refroidissement

Country Status (2)

Country Link
EP (1) EP2829701B1 (fr)
IT (1) ITTO20130627A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109278541A (zh) * 2018-11-14 2019-01-29 江阴万事兴汽车部件股份有限公司 一种膨胀水箱的安装结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07243326A (ja) * 1994-03-03 1995-09-19 Nippondenso Co Ltd 内燃機関用ラジエータリザーブタンクの取付け構造
EP1255029A1 (fr) * 2001-05-04 2002-11-06 Renault s.a.s. Sous-ensemble de véhicule automobile comportant un vase d'expansion
EP1562017A2 (fr) * 2004-02-04 2005-08-10 Calsonic Kansei Corporation Buse de moto-ventilateur avec réservoir
FR2918621A1 (fr) * 2007-07-11 2009-01-16 Peugeot Citroen Automobiles Sa Ensemble multifonctions pour le rechauffage de l'eau de lavage des surfaces vitrees d'un vehicule automobile.
FR2921019A1 (fr) * 2007-09-13 2009-03-20 Renault Sas Agencement de fixation d'un reservoir de liquide sur un element de structure d'un vehicule automobile
EP2375028A1 (fr) 2010-04-09 2011-10-12 Tristone Flowtech Solutions (TFS) Dispositif de régulation de la phase liquide d'un circuit de refroidissement d'un moteur thermique, notamment pour véhicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07243326A (ja) * 1994-03-03 1995-09-19 Nippondenso Co Ltd 内燃機関用ラジエータリザーブタンクの取付け構造
EP1255029A1 (fr) * 2001-05-04 2002-11-06 Renault s.a.s. Sous-ensemble de véhicule automobile comportant un vase d'expansion
EP1562017A2 (fr) * 2004-02-04 2005-08-10 Calsonic Kansei Corporation Buse de moto-ventilateur avec réservoir
FR2918621A1 (fr) * 2007-07-11 2009-01-16 Peugeot Citroen Automobiles Sa Ensemble multifonctions pour le rechauffage de l'eau de lavage des surfaces vitrees d'un vehicule automobile.
FR2921019A1 (fr) * 2007-09-13 2009-03-20 Renault Sas Agencement de fixation d'un reservoir de liquide sur un element de structure d'un vehicule automobile
EP2375028A1 (fr) 2010-04-09 2011-10-12 Tristone Flowtech Solutions (TFS) Dispositif de régulation de la phase liquide d'un circuit de refroidissement d'un moteur thermique, notamment pour véhicule automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109278541A (zh) * 2018-11-14 2019-01-29 江阴万事兴汽车部件股份有限公司 一种膨胀水箱的安装结构
CN109278541B (zh) * 2018-11-14 2024-02-09 江阴万事兴汽车部件股份有限公司 一种膨胀水箱的安装结构

Also Published As

Publication number Publication date
ITTO20130627A1 (it) 2015-01-25
EP2829701B1 (fr) 2017-12-20

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