EP3415737A1 - A supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle - Google Patents
A supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle Download PDFInfo
- Publication number
- EP3415737A1 EP3415737A1 EP17175831.1A EP17175831A EP3415737A1 EP 3415737 A1 EP3415737 A1 EP 3415737A1 EP 17175831 A EP17175831 A EP 17175831A EP 3415737 A1 EP3415737 A1 EP 3415737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- perimetral
- supplementary tank
- containing volume
- coupling
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 42
- 238000010168 coupling process Methods 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 239000002826 coolant Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004202 carbamide Substances 0.000 claims abstract description 5
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 238000009776 industrial production Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
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 F01P1/00Â -Â F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/029—Expansion reservoirs
-
- 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 F01N1/00Â -Â F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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 F01N1/00Â -Â F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
-
- 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
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/18—Plastics material, e.g. polyester resin
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
Definitions
- the present invention relates to a supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle, having at least one volume for containing a coolant of an engine cooling system.
- a supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle having at least one volume for containing a coolant of an engine cooling system.
- Tank including more than one containing volume is also not excluded, such as a first volume for said coolant, and a second volume for a urea solution for a system for catalytic reduction of the exhaust gases of the engine.
- the invention particularly relates to a supplementary tank of a known type having a body comprising an upper half-shell and a lower half-shell, both of plastic material, rigidly connected to each other along respective perimetral coupling edges and defining the aforesaid containing volume, and wherein said containing volume is provided with a filling inlet for charging said fluid within the containing volume, and at least one upper connection element and one lower connection element for connecting ducts to said auxiliary system; a stilling well is also associated with said containing volume, extending upwards within said containing volume, starting from a bottom wall of said body.
- the upper half-shell and the lower half-shell forming the body of the tank are rigidly connected to each other by means of hot welding of the plastic material forming the two half-shells.
- a tool is used in the form of a blade, which is preliminarily heated and then brought into contact with the coupling edges of the two half-shells to bring the thermoplastic material to the temperature required to perform the welding operation obtained by pressing the two half-shells against each other.
- a further drawback of the prior art described above lies in the fact that the two half-shells cannot be made with different materials, nor is it possible to provide inserts of different materials and/or colors. It would, however, be preferable to make the aforesaid connections with different color materials, for example, to characterize - in a simple and immediate manner - different tanks intended to be used on different engines, so as to facilitate the work of the operators in assembly lines of the motor-vehicles.
- the aim of the present invention is to provide a supplementary tank of the type indicated above that is able to overcome the above-mentioned drawbacks.
- the present invention relates to a supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle, having at least one volume for containing a coolant of an engine cooling system, wherein said supplementary tank has a body comprising an upper half-shell and a lower half-shell, both made of plastic, rigidly connected to each other along respective perimetral coupling edges and defining the said containing volume, wherein said containing volume is provided with a filling inlet for charging the fluid within the containing volume, and at least one upper connection element and one lower connection element for connecting pipes from said auxiliary system, and wherein said containing volume is provided with a stilling well, extending upwards within said containing volume starting from a bottom wall of said body, said supplementary tank being characterized in that said upper half-shell and said lower half-shell are rigidly connected to each other by means of adhesive material, in that said stilling well protrudes upwards beyond a general theoretical plane containing the perimetral coupling
- the perimetral coupling edges of the upper half-shell and the lower half-shell have mutual engagement surfaces including a perimetral rib and a perimetral groove, respectively, or vice versa.
- the said perimetral rib has a cross-sectional profile selected from a trapezoidal profile, a triangular profile, a rounded profile, and a square profile.
- a further characteristic of the tank according to the invention lies in the fact that the perimetral coupling edges of the upper half-shell and the lower half-shell are also rigidly connected to each other by mechanical coupling, for example, with the aid of a plurality of elastic teeth each protruding from one of said half-shells and engaged within corresponding coupling seats of the other half-shell.
- the supplementary tank according to the invention has a series of important advantages. Firstly, the tank is produced with a stilling well that can be as long as possible, so as to ensure the best operating efficiency, without causing any problems or disadvantages in the manufacturing process of the tank.
- a further advantage of the invention lies in the fact that the two half-shells forming the tank can be made of different materials and/or colors.
- the body of the tank includes, in addition to the aforesaid upper half-shell and the aforesaid lower half-shell, additional body portions joined by adhesive material to at least one of said half-shells.
- the aforesaid additional body portions can be produced using the same material or a different material, and either using the same color or a different color compared to the material and color of the two half-shells.
- the aforesaid upper connection element of the tank can be produced as a separate body portion, in a different and contrasting color with respect to the color of the upper half-shell of the tank. This characteristic can be used, for example, in an industrial production to distinguish tanks intended to be associated with different types of engines, by adopting a predetermined color for the upper connection element of the tank for each type of engine.
- Another important advantage of the invention lies in the fact that the perimetral coupling edges for coupling the upper half-shell with the lower half-shell can have portions lying in different planes, inclined or spaced apart, without this having any drawbacks in the manufacturing process (unlike in the case of half-shells welded by applying a hot blade).
- the reference numeral 1 indicates, in its entirety, a first embodiment of a tank according to the invention, which in the example shown is an supplementary tank for the cooling system of an internal combustion engine of a motor-vehicle.
- the tank comprises a plastic body 2 including an upper half-shell 3 and a lower half-shell 4.
- the tank 1 includes an upper connection element 5 and a lower connection element 6 for coupling of connecting pipes from the cooling system of the motor-vehicle, according to the conventional technique well-known to those skilled in the art.
- a stilling well 8 is arranged, formed by a cylindrical wall extending upwards from the bottom wall of the lower half-shell 4, so as to define a reduced containing volume 9 of the coolant, which is in communication with the connection 5 by means of a duct portion 5A protruding vertically downwards from the wall of the upper half-shell 3 and partially inserted within the upper port of the stilling well 8.
- the cylindrical wall forming the stilling well has an opening 8A, adjacent to the bottom wall of the lower half-shell 4, which causes the containing volume 9 of the well 8 to communicate with the main containing volume 7 of the tank 1.
- a filling inlet 10 is also formed in one piece in the upper half-shell 3 for charging the fluid within the tank 1, having a threaded external surface for engaging the threaded inner surface of a closure lid 11.
- a lower connection element 12 is formed in a single piece for engaging a pipe (not shown) connecting the tank 1 to the engine cooling system of the motor-vehicle, according to the conventional technique well-known to those skilled in the art.
- a spacer column is arranged, defined by two column portions 13, 14 formed in a single piece with the upper half-shell 3 and the lower half-shell 4, respectively (see also Figures 4, 5 ).
- the upper half-shell 3 also includes two brackets 15 for connecting the supplementary tank 1 to a supporting structure belonging to the motor-vehicle structure.
- the two half-shells 3 and 4 are rigidly connected to each other along their perimetral coupling edges 3A and 4A by means of adhesive material M (see figures).
- adhesive material M see figures.
- the upper half-shell 3 can be made of polypropylene, while the lower half-shell 4 can be made of polyamide.
- the connection 5, or any other connection provided on the tank 1 can be formed of a separate body portion 50, made of a different material with respect to the material chosen for the upper half-shell 3, if required and/or having a different coloring.
- the connection 5 is formed of a separate body portion 50 joined to the upper half-shell 3 by means of adhesive material.
- the portion 50 can be made, for example, of polyphenylsulphide. This characteristic allows arrangement of tanks of the type illustrated, with differently colored connections 5 to indicate the destination for different types of engines. In this way, the work of the operators in the assembly line of motor-vehicles is made easier.
- the stilling well 8 is obtained in a single piece with the lower half-shell 4, and yet it extends upwards beyond the theoretical plane containing the perimetral coupling edge 4A of the lower half-shell 4. In this way, the stilling well 8 is able to optimally perform its function and, at the same time, does not give rise to any inconvenience or complication during the manufacturing process, unlike conventional solutions in which the two half-shells 3, 4 are rigidly connected to each other by welding with a hot blade.
- the perimetral coupling edges 3A, 4A of the half-shells 3, 4 have reciprocal engagement surfaces including, respectively, a rib 15 received within a groove 16.
- the groove 15 is formed on the perimetral coupling edge 4A of the lower half-shell 4 and the rib 16 is formed on the perimetral coupling edge of the upper half-shell 3.
- an inverse configuration could be adopted, with the rib formed on the upper half-shell and the groove formed on the lower half-shell.
- Figures 6 and 7 have two possible configurations, corresponding to two different variants, of the rib 15 and of the groove 16. In both cases, the rib and the groove have a trapezoidal profile cross-section.
- Figure 7 differs from Figure 6 due to the arrangement of a height space h 3 between the two facing edges 3A, 4A on the inner side of the rib.
- the dimensions shown in Figure 7 were as follows:
- the present invention extends to any commercially available adhesive, suitable for applications of the type discussed here.
- a usable adhesive material is the Loctite AA3038 product of the Henkel Company.
- the two half-shells 3, 4 are rigidly connected to each other by mechanical connection, as well as through adhesive material.
- This mechanical connection is achieved by the engagement of a plurality of elastic teeth 30 arranged on one of the perimetral coupling edges of the half-shells 3, 4 within corresponding coupling seats 40 provided in the perimetral coupling edge of the other half-shell.
- Figure 9 shows, by way of example, the detail of an elastic tooth 30 protruding from the perimetral coupling edge 3A of the upper half-shell 3 in a decoupled position with respect to the corresponding coupling seat 40 provided in the perimetral coupling edge 4A of the lower half-shell 4.
- FIG 9 shows only the portions of the perimetral coupling edges of the two half-shells in which the elastic tooth 30 and the coupling seat 40 are arranged.
- each elastic tooth 30 can be provided in either of the two half-shells 3, 4, resulting in the provision of the coupling seat 40 in the other half-shell.
- tank according to the invention lies in the fact that it can have half-shells 3, 4 with perimetral coupling edges including portions contained in different planes, for example, inclined or spaced apart, without this having any drawbacks in the manufacturing process, as occurs in the case of the tank according to the prior art in which the two half-shells are connected together by means of hot-blade welding.
- An example of a tank of this type is illustrated in Figures 10 and 11 with reference to a second embodiment.
- the body of the tank comprising the two half-shells 3, 4 also defines, in addition to the containing volume 7 for the coolant of an engine cooling system, another containing volume 70, separate from the volume 7, which in the example shown is intended to contain a urea solution for a catalytic reduction system of exhaust gases of the engine.
- the stilling well extends for the entire height of the containing volume 7, from the bottom wall of the lower half-shell up to the upper wall, coaxially to the filling inlet 10.
- the auxiliary volume 70 has a separate filling inlet 100 and an outlet connection 60 associated with it. All of the variants illustrated above with reference to the embodiment of Figure 1 can, of course, also be adopted in the case of the embodiment of Figures 10 and 11 .
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)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
- The present invention relates to a supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle, having at least one volume for containing a coolant of an engine cooling system. Application of the invention to tanks including more than one containing volume is also not excluded, such as a first volume for said coolant, and a second volume for a urea solution for a system for catalytic reduction of the exhaust gases of the engine.
- The invention particularly relates to a supplementary tank of a known type having a body comprising an upper half-shell and a lower half-shell, both of plastic material, rigidly connected to each other along respective perimetral coupling edges and defining the aforesaid containing volume, and wherein said containing volume is provided with a filling inlet for charging said fluid within the containing volume, and at least one upper connection element and one lower connection element for connecting ducts to said auxiliary system; a stilling well is also associated with said containing volume, extending upwards within said containing volume, starting from a bottom wall of said body.
- In known supplementary tanks of the type indicated above, the upper half-shell and the lower half-shell forming the body of the tank are rigidly connected to each other by means of hot welding of the plastic material forming the two half-shells. To this end, a tool is used in the form of a blade, which is preliminarily heated and then brought into contact with the coupling edges of the two half-shells to bring the thermoplastic material to the temperature required to perform the welding operation obtained by pressing the two half-shells against each other.
- The disadvantage of this known technique lies in the fact that it is imperative to design each of the two half-shells so that they do not have portions protruding above the plane containing the perimetral coupling edge, otherwise it would not be possible to bring the hot blade used for welding into contact with the perimetral coupling edge. This puts a limit on the functionality of the supplementary tank, since the aforesaid stilling well within the containing volume of the coolant should instead extend upwards as much as possible. To overcome this disadvantage, the stilling well could be produced from two separate elements formed in one-piece with the two half-shells, in positions that define the entire body of the well when the two half-shells are welded together. This mode of operation is relatively complicated and, furthermore, does not enable, at the end of the welding process, the good quality of the weld to bechecked also at the coupled edges of the two elements forming the well.
- A further drawback of the prior art described above lies in the fact that the two half-shells cannot be made with different materials, nor is it possible to provide inserts of different materials and/or colors. It would, however, be preferable to make the aforesaid connections with different color materials, for example, to characterize - in a simple and immediate manner - different tanks intended to be used on different engines, so as to facilitate the work of the operators in assembly lines of the motor-vehicles.
- Finally, the prior art described above also involves the risk that the relatively high temperature reached during welding results in unwanted modifications of the thermoplastic material, which makes controlling the process more problematic and costly.
- The aim of the present invention is to provide a supplementary tank of the type indicated above that is able to overcome the above-mentioned drawbacks.
- In order to achieve the aforesaid object, the present invention relates to a supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle, having at least one volume for containing a coolant of an engine cooling system,
wherein said supplementary tank has a body comprising an upper half-shell and a lower half-shell, both made of plastic, rigidly connected to each other along respective perimetral coupling edges and defining the said containing volume,
wherein said containing volume is provided with a filling inlet for charging the fluid within the containing volume, and at least one upper connection element and one lower connection element for connecting pipes from said auxiliary system, and
wherein said containing volume is provided with a stilling well, extending upwards within said containing volume starting from a bottom wall of said body,
said supplementary tank being characterized in that said upper half-shell and said lower half-shell are rigidly connected to each other by means of adhesive material, in that said stilling well protrudes upwards beyond a general theoretical plane containing the perimetral coupling edge of the lower half-shell, and in that said stilling well is formed in a single piece with said lower half-shell. - According to a further preferred characteristic of the invention, the perimetral coupling edges of the upper half-shell and the lower half-shell have mutual engagement surfaces including a perimetral rib and a perimetral groove, respectively, or vice versa. The said perimetral rib has a cross-sectional profile selected from a trapezoidal profile, a triangular profile, a rounded profile, and a square profile.
- A further characteristic of the tank according to the invention lies in the fact that the perimetral coupling edges of the upper half-shell and the lower half-shell are also rigidly connected to each other by mechanical coupling, for example, with the aid of a plurality of elastic teeth each protruding from one of said half-shells and engaged within corresponding coupling seats of the other half-shell.
- Thanks to the aforesaid characteristics, the supplementary tank according to the invention has a series of important advantages. Firstly, the tank is produced with a stilling well that can be as long as possible, so as to ensure the best operating efficiency, without causing any problems or disadvantages in the manufacturing process of the tank. A further advantage of the invention lies in the fact that the two half-shells forming the tank can be made of different materials and/or colors. In one embodiment, the body of the tank includes, in addition to the aforesaid upper half-shell and the aforesaid lower half-shell, additional body portions joined by adhesive material to at least one of said half-shells. In this embodiment, the aforesaid additional body portions can be produced using the same material or a different material, and either using the same color or a different color compared to the material and color of the two half-shells. For example, the aforesaid upper connection element of the tank can be produced as a separate body portion, in a different and contrasting color with respect to the color of the upper half-shell of the tank. This characteristic can be used, for example, in an industrial production to distinguish tanks intended to be associated with different types of engines, by adopting a predetermined color for the upper connection element of the tank for each type of engine.
- Another important advantage of the invention lies in the fact that the perimetral coupling edges for coupling the upper half-shell with the lower half-shell can have portions lying in different planes, inclined or spaced apart, without this having any drawbacks in the manufacturing process (unlike in the case of half-shells welded by applying a hot blade).
- Further characteristics and advantages of the invention will become apparent from the description that follows with reference to the attached drawings, provided purely by way of non-limiting example, wherein:
-
Figure 1 is a cross-sectional view of a first embodiment of a supplementary tank according to the present invention; -
Figures 2 and 3 are further cross-sectional views of the tank ofFigure 1 , according to different cross-sectional planes compared toFigure 1 , -
Figures 4 and 5 are perspective views of the upper half-shell and the lower half-shell forming the supplementary tank ofFigure 1 , -
Figures 6 and 7 show, in cross-section, the coupling edges of the upper half-shell and the lower half-shell of the supplementary tank ofFigure 1 , according to two different variants, -
Figures 8A, 8B, and 8C are schematic representations relative to further variations of the cross-sectional profile of the coupling edges of the upper half-shell and the lower half-shell, -
Figure 9 is a perspective view- on an enlarged scale- of an elastic tooth and the corresponding coupling seat arranged on the two half-shells of the tank ofFigure 1 , -
Figure 10 is a perspective view of a second embodiment of the tank according to the invention, and -
Figure 11 is a cross-sectional view of the tank ofFigure 10 . - In
Figures 1 to 3 , the reference numeral 1 indicates, in its entirety, a first embodiment of a tank according to the invention, which in the example shown is an supplementary tank for the cooling system of an internal combustion engine of a motor-vehicle. The tank comprises aplastic body 2 including an upper half-shell 3 and a lower half-shell 4. - In the present description, the terms "upper" and "lower" are understood to refer to the position of the tank in the condition of use.
- According to the prior art, the tank 1 includes an
upper connection element 5 and alower connection element 6 for coupling of connecting pipes from the cooling system of the motor-vehicle, according to the conventional technique well-known to those skilled in the art. Furthermore, within the containingvolume 7 defined between the two half-shells shell 4, so as to define a reduced containingvolume 9 of the coolant, which is in communication with theconnection 5 by means of aduct portion 5A protruding vertically downwards from the wall of the upper half-shell 3 and partially inserted within the upper port of the stilling well 8. The cylindrical wall forming the stilling well has an opening 8A, adjacent to the bottom wall of the lower half-shell 4, which causes the containingvolume 9 of thewell 8 to communicate with the main containingvolume 7 of the tank 1. - A filling
inlet 10 is also formed in one piece in the upper half-shell 3 for charging the fluid within the tank 1, having a threaded external surface for engaging the threaded inner surface of aclosure lid 11. - As best seen in
Figure 2 , in the bottom wall of the lower half-shell 4, alower connection element 12 is formed in a single piece for engaging a pipe (not shown) connecting the tank 1 to the engine cooling system of the motor-vehicle, according to the conventional technique well-known to those skilled in the art. - With reference in particular to
Figure 3 , within the containingvolume 7, a spacer column is arranged, defined by twocolumn portions shell 3 and the lower half-shell 4, respectively (see alsoFigures 4, 5 ). In the example illustrated inFigure 4 , the upper half-shell 3 also includes twobrackets 15 for connecting the supplementary tank 1 to a supporting structure belonging to the motor-vehicle structure. - In the supplementary tank according to the invention, the two half-
shells perimetral coupling edges shells shell 3 can be made of polypropylene, while the lower half-shell 4 can be made of polyamide. Furthermore, theconnection 5, or any other connection provided on the tank 1 can be formed of aseparate body portion 50, made of a different material with respect to the material chosen for the upper half-shell 3, if required and/or having a different coloring. In the illustrated example, theconnection 5 is formed of aseparate body portion 50 joined to the upper half-shell 3 by means of adhesive material. Theportion 50 can be made, for example, of polyphenylsulphide. This characteristic allows arrangement of tanks of the type illustrated, with differentlycolored connections 5 to indicate the destination for different types of engines. In this way, the work of the operators in the assembly line of motor-vehicles is made easier. - As can be seen in
Figures 1 to 3 , the stilling well 8 is obtained in a single piece with the lower half-shell 4, and yet it extends upwards beyond the theoretical plane containing theperimetral coupling edge 4A of the lower half-shell 4. In this way, the stilling well 8 is able to optimally perform its function and, at the same time, does not give rise to any inconvenience or complication during the manufacturing process, unlike conventional solutions in which the two half-shells - According to a further preferred characteristic of the invention, the
perimetral coupling edges shells rib 15 received within agroove 16. In the illustrated example, thegroove 15 is formed on theperimetral coupling edge 4A of the lower half-shell 4 and therib 16 is formed on the perimetral coupling edge of the upper half-shell 3. However, an inverse configuration could be adopted, with the rib formed on the upper half-shell and the groove formed on the lower half-shell. -
Figures 6 and 7 have two possible configurations, corresponding to two different variants, of therib 15 and of thegroove 16. In both cases, the rib and the groove have a trapezoidal profile cross-section. - In a concrete embodiment example, the dimensions shown in
Figure 6 were as follows: - h1 = about 5 mm;
- h2 = about 5.7 mm;
- s1 = 0.1-0.9 mm
- s = 0.4 mm
- f = 8 mm
- a = 2 mm;
- b = 2.5 mm.
- The variant of
Figure 7 differs fromFigure 6 due to the arrangement of a height space h3 between the two facingedges Figure 7 were as follows: - h1 = about 5 mm;
- h2 = about 5.7 mm;
- h2 = about 2.3 mm;
- s1 = 0.1-0.9 mm
- f = about 8 mm;
- a = 2 mm;
- b = 2.5 mm.
- The present invention extends to any commercially available adhesive, suitable for applications of the type discussed here. By way of example, a usable adhesive material is the Loctite AA3038 product of the Henkel Company.
- Instead of the trapezoidal shape of the
rib 15 and of thegroove 16 illustrated in the variants ofFigures 6 and 7 , it is possible to adopt a triangular shape, a rounded shape or a square shape, as shown schematically inFigures 8A, 8B and 8C . - According to a further important characteristic of the present invention, the two half-
shells elastic teeth 30 arranged on one of the perimetral coupling edges of the half-shells Figure 9 shows, by way of example, the detail of anelastic tooth 30 protruding from theperimetral coupling edge 3A of the upper half-shell 3 in a decoupled position with respect to the correspondingcoupling seat 40 provided in theperimetral coupling edge 4A of the lower half-shell 4.Figure 9 shows only the portions of the perimetral coupling edges of the two half-shells in which theelastic tooth 30 and thecoupling seat 40 are arranged. Of course, eachelastic tooth 30 can be provided in either of the two half-shells coupling seat 40 in the other half-shell. - Another important advantage of the tank according to the invention lies in the fact that it can have half-
shells Figures 10 and11 with reference to a second embodiment. In the case of this embodiment, the body of the tank comprising the two half-shells volume 7 for the coolant of an engine cooling system, another containingvolume 70, separate from thevolume 7, which in the example shown is intended to contain a urea solution for a catalytic reduction system of exhaust gases of the engine. - In
Figures 10 and11 , the parts common or corresponding to those ofFigures 1-9 are indicated by the same reference numbers. - In the case of the embodiment of
Figure 11 , the stilling well extends for the entire height of the containingvolume 7, from the bottom wall of the lower half-shell up to the upper wall, coaxially to the fillinginlet 10. To contain the urea solution, theauxiliary volume 70 has aseparate filling inlet 100 and anoutlet connection 60 associated with it. All of the variants illustrated above with reference to the embodiment ofFigure 1 can, of course, also be adopted in the case of the embodiment ofFigures 10 and11 . - Of course, without prejudice to the principle of the invention, the details of construction and the embodiments may vary widely with respect to those described and illustrated purely by way of example, without departing from the scope of the present invention.
Claims (10)
- A supplementary tank (1) for an auxiliary system associated with an internal combustion engine of a motor-vehicle, having at least one containing volume (7) for a coolant of an engine cooling system,
wherein said supplementary tank (1) has a body (2) comprising an upper half-shell (3) and a lower half-shell (4), both made of plastic, rigidly connected to each other along respective perimetral coupling edges (3A, 4A) and defining the aforesaid containing volume (7) between them,
wherein said containing volume (7) is provided with a filling inlet (10) for charging the fluid within the containing volume, and at least one upper connection element (5) and one lower connection element (6) for connecting pipes from said auxiliary system, and
wherein said containing volume (7) is provided with a stilling well (8), extending upwardly within said containing volume (7) starting from a bottom wall of said body (1),
said supplementary tank being characterized in that said upper half-shell (3) and said lower half-shell (4) are rigidly connected to each other by means of adhesive material (M), and in that said stilling well (8) protrudes upwards beyond a general theoretical plane containing the perimetral coupling edge (4A) of the lower half-shell and in that said stilling well (8) is formed in a single piece with said lower half-shell (4). - A supplementary tank according to claim 1, characterized in that said body (1) defines two separate containing volumes (7, 70), a first volume for said coolant, and a second volume for a urea solution for a system for catalytic reduction of the exhaust gases of the engine, said second containing volume (70) being provided with a filling inlet (100) for charging the fluid within the second containing volume (70), and at least one lower connection element (60).
- A supplementary tank according to claim 1, characterized in that the perimetral coupling edges (3A, 4A) of the upper half-shell (3) and of the lower half-shell (4) have reciprocal engagement surfaces including a perimetral rib (15) received in a perimetral groove (16).
- A supplementary tank according to claim 3, characterized in that the aforesaid perimetral rib (15) and the aforesaid perimetral groove (16) have a cross-sectional profile chosen among a trapezoidal profile, a triangular profile, a rounded profile, and a square profile.
- A supplementary tank according to claim 1, characterized in that the perimetral coupling edges (3A, 4A) of the two half-shells (3, 4) have portions lying on different planes, inclined or vertically spaced apart from each other.
- A supplementary tank according to claim 1, characterized in that the aforesaid body (1) includes additional body portions (50) joined by means of adhesive to at least one of said half-shells (3, 4).
- A supplementary tank according to claim 6, characterized in that said half-shells (3, 4) and said additional body portions (50) are made of the same or different materials and/or of the same or different colors.
- A supplementary tank according to claim 6, characterized in that said upper connection element (5) is part of a separate body portion joined by means of adhesive material to said upper half-shell (3), and has a color contrasting with the color of said upper half-shell (3), said color being predetermined depending on the type of engine with which the additional tank should be associated, so that in an industrial production, the same color of said connection indicates the destination of the tank to a specific type of engine.
- A supplementary tank according to claim 1, characterized in that the said half-shells (3, 4) are rigidly connected to each other, by mechanical coupling as well as by means of adhesive material.
- A supplementary tank according to claim 8, characterized in that said mechanical coupling includes a plurality of elastic teeth (30) each arranged along the perimetral coupling edge (3A, 4A) of one of the two half-shells (3, 4) and engaging within a corresponding coupling seat (40) provided along the perimetral coupling edge (3A, 4A) of the other half-shell.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17175831.1A EP3415737B1 (en) | 2017-06-13 | 2017-06-13 | A supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17175831.1A EP3415737B1 (en) | 2017-06-13 | 2017-06-13 | A supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle |
Publications (2)
Publication Number | Publication Date |
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EP3415737A1 true EP3415737A1 (en) | 2018-12-19 |
EP3415737B1 EP3415737B1 (en) | 2020-07-22 |
Family
ID=59227457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17175831.1A Active EP3415737B1 (en) | 2017-06-13 | 2017-06-13 | A supplementary tank for an auxiliary system associated with an internal combustion engine of a motor-vehicle |
Country Status (1)
Country | Link |
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EP (1) | EP3415737B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3126482A1 (en) * | 2021-09-02 | 2023-03-03 | Renault S.A.S. | Device for storing a first liquid intended to heat a second liquid. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10119704A1 (en) * | 2001-04-20 | 2002-10-31 | Siemens Ag | Fluid tank for motor vehicle consists of at least two shells interconnected along edges which extend through area of reduced cross section and/or in region of feed pump |
EP1260685A2 (en) * | 2001-05-23 | 2002-11-27 | Filterwerk Mann + Hummel Gmbh | Coolant tank of an internal combustion engine |
FR2866064A1 (en) * | 2004-02-11 | 2005-08-12 | Trelleborg Fluid Systems Geie | Cooling circuit liquid phase control device for motor vehicle, has orifices provided on part of fluid delivery pipe projecting into enclosure, and respectively opening into enclosure at levels situated above and below maximum fluid level |
DE102014002688A1 (en) * | 2014-02-28 | 2015-09-03 | Kautex Textron Gmbh & Co. Kg | Multi-chamber container |
-
2017
- 2017-06-13 EP EP17175831.1A patent/EP3415737B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10119704A1 (en) * | 2001-04-20 | 2002-10-31 | Siemens Ag | Fluid tank for motor vehicle consists of at least two shells interconnected along edges which extend through area of reduced cross section and/or in region of feed pump |
EP1260685A2 (en) * | 2001-05-23 | 2002-11-27 | Filterwerk Mann + Hummel Gmbh | Coolant tank of an internal combustion engine |
FR2866064A1 (en) * | 2004-02-11 | 2005-08-12 | Trelleborg Fluid Systems Geie | Cooling circuit liquid phase control device for motor vehicle, has orifices provided on part of fluid delivery pipe projecting into enclosure, and respectively opening into enclosure at levels situated above and below maximum fluid level |
DE102014002688A1 (en) * | 2014-02-28 | 2015-09-03 | Kautex Textron Gmbh & Co. Kg | Multi-chamber container |
Also Published As
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EP3415737B1 (en) | 2020-07-22 |
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