FR2819438A1 - Procedure for plugging aperture in component such as engine crankcase for pressure testing uses two plugs applied to adjoining surfaces - Google Patents
Procedure for plugging aperture in component such as engine crankcase for pressure testing uses two plugs applied to adjoining surfaces Download PDFInfo
- Publication number
- FR2819438A1 FR2819438A1 FR0100571A FR0100571A FR2819438A1 FR 2819438 A1 FR2819438 A1 FR 2819438A1 FR 0100571 A FR0100571 A FR 0100571A FR 0100571 A FR0100571 A FR 0100571A FR 2819438 A1 FR2819438 A1 FR 2819438A1
- Authority
- FR
- France
- Prior art keywords
- pad
- edge
- face
- orifice
- faces
- 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
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000000295 complement effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000000872 buffer Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/025—Details with respect to the testing of engines or engine parts
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
<Desc/Clms Page number 1> <Desc / Clms Page number 1>
PROCEDE POUR BOUCHER UN ORIFICE DANS UNE PIECE COMME UN CARTER DE MOTEUR DE VEHICULE AUTOMOBILE
La présente invention concerne les procédés pour boucher une pièce comportant un orifice débouchant sur l'arête définie par l'intersection de deux faces sécantes extérieures de cette pièce, par application de tampons sur ces deux faces, qui trouvent une application particulièrement avantageuse, mais non exclusivement, pour boucher les orifices des carters-chapeaux des paliers pour moteurs de véhicules automobiles, en vue par exemple de tester l'étanchéité de leurs parois. METHOD FOR PLUGGING AN ORIFICE IN A PART, SUCH AS A MOTOR VEHICLE CRANKCASE
The present invention relates to methods for sealing a part comprising an orifice opening onto the edge defined by the intersection of two external secant faces of this part, by application of pads on these two faces, which find a particularly advantageous application, but not exclusively, to plug the orifices of the crankcases of the bearings for motor vehicle engines, for example in order to test the tightness of their walls.
On sait que, notamment dans le domaine des véhicules automobiles, il est nécessaire de procéder à des tests d'étanchéité des parois de certaines pièces afin de pouvoir déterminer et prévoir leur qualité. Tel est le cas, par exemple, des carters de moteurs ou analogues. It is known that, in particular in the field of motor vehicles, it is necessary to carry out leaktightness tests on the walls of certain parts in order to be able to determine and predict their quality. This is the case, for example, of engine housings or the like.
Pour procéder à ces tests d'étanchéité, on commence par boucher tous les orifices que comporte la pièce à tester, au moyen de tampons, pour délimiter un volume étanche à l'intérieur de cette pièce Ensuite, on introduit par exemple un gaz sous pression dans ce volume et on examine les fuites qui peuvent se produire, suivant différentes techniques qui sont bien connues en elles-mêmes. To carry out these leaktightness tests, one begins by plugging all the orifices that the test piece has, by means of buffers, to delimit a sealed volume inside this piece. Next, a gas under pressure is introduced, for example. in this volume and we examine the leaks that may occur, using different techniques that are well known in themselves.
Cette façon de procéder est relativement facile à mettre en oeuvre quand les orifices ne débouchent que sur une face de la pièce. En revanche, il est apparu que le bouchage d'un orifice débouchant sur l'arête définie par l'intersection de deux faces sécantes extérieures de la pièce à tester était très difficile à réaliser, et qu'aucune des techniques mises au point jusqu'à ce jour pour obtenir ce bouchage n'a réellement donné satisfaction. This procedure is relatively easy to implement when the orifices only open onto one face of the part. On the other hand, it appeared that plugging an orifice opening onto the edge defined by the intersection of two external secant faces of the part to be tested was very difficult to achieve, and that none of the techniques developed up to to date to obtain this blockage has not really given satisfaction.
Aussi, la présente invention a-t-elle pour but de mettre en oeuvre un procédé pour boucher une pièce comportant un orifice débouchant sur l'arête définie par l'intersection de deux de ses faces sécantes extérieures, par application de tampons sur ces deux faces, qui pallie les inconvénients des techniques de l'art antérieur. The object of the present invention is therefore to implement a method for sealing a part comprising an orifice opening onto the edge defined by the intersection of two of its outer secant faces, by applying pads to these two. faces, which overcomes the disadvantages of the techniques of the prior art.
Plus précisément, la présente invention a pour objet un procédé pour boucher une pièce comportant un orifice débouchant sur l'arête définie par l'intersection de deux faces sécantes extérieures de la pièce, par application de tampons sur les deux dites faces, caractérisé par le fait qu'il consiste : More specifically, the subject of the present invention is a method for sealing a part comprising an orifice opening onto the edge defined by the intersection of two external secant faces of the part, by application of pads on the two said faces, characterized by the fact that it consists:
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a) à appliquer un premier tampon sur une première des deux faces, de façon que ledit premier tampon recouvre la section dudit orifice définie sur cette première face et qu'une partie de ce premier tampon, d'une longueur déterminée dépasse, en déport, ladite arête, puis b) à appliquer un second tampon sur la seconde face, de façon que ledit second tampon recouvre la section dudit orifice définie sur ladite seconde face et qu'une partie de ce second tampon recouvre la tranche du premier tampon se trouvant en déport de l'arête, ladite partie du second tampon étant d'une longueur inférieure à la largeur de la tranche du premier tampon, et enfin c) à appliquer des forces de pression sur les premier et second tampons pour tendre à les plaquer fortement contre les deux faces. a) applying a first pad on a first of the two faces, so that said first pad covers the section of said orifice defined on this first face and that part of this first pad, of a determined length exceeds, offset, said edge, then b) applying a second pad on the second face, so that said second pad covers the section of said orifice defined on said second face and that part of this second pad covers the edge of the first pad being in offset from the edge, said part of the second pad being of a length less than the width of the edge of the first pad, and finally c) applying pressure forces on the first and second pads to tend to press them strongly against both sides.
D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratîf mais nullement limitatif, dans lesquels :
Les figures 1 et 2 représentent respectivement deux vues en coupes orthogonales d'un schéma permettant d'expliciter la mise ceuvre du procédé selon l'invention pour le bouchage d'une pièce comme un carter-chapeau de palier pour moteur de véhicule automobile, la figure 1 étant une coupe référencée 1-1 sur la figure 2 et la figure 2 étant une coupe référencée t- ! t sur la figure 1. Other characteristics and advantages of the invention will become apparent during the following description given with reference to the drawings annexed by way of illustration but in no way limitative, in which:
FIGS. 1 and 2 respectively represent two views in orthogonal sections of a diagram making it possible to explain the implementation of the method according to the invention for plugging a part such as a bearing cap housing for a motor vehicle engine, the Figure 1 being a section referenced 1-1 in Figure 2 and Figure 2 being a section referenced t-! t in Figure 1.
La Demanderesse tient à préciser que les figures 1 et 2 ne représentent qu'un seul mode de mise en oeuvre du procédé selon l'invention et qu'il peut exister d'autres modes de mise en oeuvre qui répondent à la définition de cette invention. The Applicant wishes to specify that FIGS. 1 and 2 represent only one mode of implementation of the method according to the invention and that there may be other modes of implementation which meet the definition of this invention. .
Ceci ayant été précisé, le procédé selon l'invention permet de boucher une pièce 1, comme un carter-chapeau de palier pour moteur de véhicule automobile, comportant un orifice 2 débouchant sur l'arête 23 définie par l'intersection de deux faces sécantes extérieures 3,4 de la pièce, par application de tampons sur ces deux faces. This having been clarified, the method according to the invention makes it possible to plug a part 1, such as a bearing cap housing for a motor vehicle engine, comprising an orifice 2 opening onto the edge 23 defined by the intersection of two intersecting faces. 3,4 of the part, by applying pads on these two faces.
Le procédé consiste tout d'abord à appliquer un premier tampon 10 sur une première 3 des deux faces, de façon que ce premier tampon 10 recouvre la section 11 de l'orifice 2 définie sur cette première face 3 et qu'une partie 12 de ce premier tampon, d'une longueur déterminée, dépasse, en déport, l'arête 23.
Le procédé consiste ensuite à appliquer un second tampon 20 sur la seconde face 4, de façon que ce second tampon recouvre la section 21 de l'orifice 2 définie The method then consists in applying a second pad 20 to the second face 4, so that this second pad covers the section 21 of the defined orifice 2
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sur cette seconde face 4 et qu'une partie 24 de ce second tampon recouvre la tranche 22 de la partie 12 du premier tampon 10 se trouvant en déport de l'arête 23, cette partie 24 du second tampon 20 étant d'une longueur inférieure à la largeur de la tranche 22 du premier tampon. on this second face 4 and that a portion 24 of this second pad covers the edge 22 of the portion 12 of the first pad 10 being offset from the edge 23, this portion 24 of the second pad 20 being of a shorter length to the width of the edge 22 of the first tampon.
Quand les deux phases définies ci-dessus ont été effectuées, le procédé consiste alors à appliquer des forces de pression 51 sur les premier et second tampons 10,20 pour tendre à les plaquer fortement contre les deux faces 3,4. When the two phases defined above have been carried out, the method then consists in applying pressure forces 51 on the first and second pads 10,20 to tend to press them strongly against the two faces 3,4.
Il est à remarquer que la figure 1 représente une étape de mise en oeuvre du procédé, dans laquelle le second tampon se présente devant la seconde face 4, mais n'est pas encore au contact de cette face, ce qui n'est obtenu que lorsque les forces de pression 51 sont appliquées pour venir comprimer les deux tampons 10,20 comme explicité ci-après. It should be noted that FIG. 1 represents a step in implementing the method, in which the second pad is presented in front of the second face 4, but is not yet in contact with this face, which is only obtained when the pressure forces 51 are applied to compress the two buffers 10,20 as explained below.
Dans le cas, comme illustré sur les deux figures, où la seconde face 4 porte un épaulement 40 entourant la section 21 de l'orifice 2 définie sur cette seconde face et dont les deux extrémités 41,42 sont situées sur l'arête 23, le procédé consiste,
dans une mise en oeuvre avantageuse, à réaliser le second tampon 20 sous une forme complémentaire de la surface 43 délimitée sur la seconde face 4 par l'épaulement 40 et comportant la section 21 de l'orifice définie sur cette seconde face, ce second tampon comportant en outre deux lèvres opposées 25,26 solidaires de sa partie 24 recouvrant partiellement la tranche 22 de la partie en déport 12 du premier tampon 10 et aptes à venir à la fois, comme illustré sur les deux figures, contre cette tranche 22 et contre les deux extrémités 41,42 de l'épaulement 40. In the case, as illustrated in the two figures, where the second face 4 carries a shoulder 40 surrounding the section 21 of the orifice 2 defined on this second face and the two ends 41,42 of which are located on the edge 23, the process consists,
in an advantageous implementation, to produce the second pad 20 in a form complementary to the surface 43 delimited on the second face 4 by the shoulder 40 and comprising the section 21 of the orifice defined on this second face, this second pad further comprising two opposite lips 25, 26 integral with its part 24 partially covering the edge 22 of the offset part 12 of the first pad 10 and capable of coming at the same time, as illustrated in the two figures, against this edge 22 and against the two ends 41, 42 of the shoulder 40.
En outre, de façon préférentielle, la longueur de la partie 12 du premier tampon 10 en déport de l'arête 23 est inférieure à la hauteur de l'épaulement 40. In addition, preferably, the length of the part 12 of the first pad 10 offset from the edge 23 is less than the height of the shoulder 40.
Le procédé peut en outre consister à réaliser le second tampon 20 avec une percée centrale 27, puis à positionner, dans cette percée une centrale, une âme de
guidage 28 d'une forme qui est sensiblement complémentaire de la sienne et d'une hauteur inférieure à l'épaisseur du second tampon 20, puis à appliquer une force élastique de pression 29 pour tendre à maintenir cette âme de guidage 28 plaquée contre la seconde face 4. The method can also consist in producing the second buffer 20 with a central breakthrough 27, then in positioning, in this breakthrough a central, a core of
guide 28 of a shape which is substantially complementary to its own and of a height less than the thickness of the second pad 20, then to apply an elastic pressure force 29 to tend to hold this guide core 28 pressed against the second side 4.
Comme visible sur les deux figures, les forces de pression 51 appliquées sur les deux tampons 10,20 pour tendre à les plaquer fortement contre les deux faces 3, As can be seen in the two figures, the pressure forces 51 applied to the two pads 10,20 to tend to press them strongly against the two faces 3,
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4, sont appliquées par l'intermédiaire de plaques rigides 50 en appui sur les côtés des tampons opposés à leurs côtés venant au contact des deux faces 3, 4. 4, are applied by means of rigid plates 50 bearing on the sides of the pads opposite their sides coming into contact with the two faces 3, 4.
Dans ce cas alors, avantageusement, la force élastique de pression 29 pour tendre à maintenir l'âme de guidage 28 plaquée contre la seconde face 4 est obtenue par des moyens de ressort interposés entre l'âme de guidage 28 et la plaque rigide 50 qui est au contact du second tampon 20. In this case then, advantageously, the elastic pressure force 29 to tend to keep the guide core 28 pressed against the second face 4 is obtained by spring means interposed between the guide core 28 and the rigid plate 50 which is in contact with the second buffer 20.
Dans une réalisation possible et qui peut présenter un certain avantage par rapport à la mise en oeuvre décrite ci-dessus, notamment pour éviter une détérioration du premier tampon 10 au niveau de la section 11 de l'orifice 2, ce premier tampon 10 comporte en outre, quand la configuration de l'orifice 2 le permet, une partie apte à rentrer dans cet orifice par sa section définie sur la première face 3 et à épouser au moins une portion de la paroi latérale de cet orifice 2. Cette partie du premier tampon n'a pas été représentée dans l'unique souci de clarté et de simplification du dessin, mais uniquement évoquée en traits interrompus en 13 sur la figure1. In a possible embodiment and which may have a certain advantage compared to the implementation described above, in particular to avoid deterioration of the first pad 10 at the level of section 11 of the orifice 2, this first pad 10 comprises in in addition, when the configuration of the orifice 2 allows it, a part capable of entering this orifice by its section defined on the first face 3 and of marrying at least a portion of the side wall of this orifice 2. This part of the first stamp has not been shown for the sole purpose of clarity and simplification of the drawing, but only mentioned in broken lines at 13 in Figure 1.
Il est évident que les tampons 10 et 20 peuvent réalisés dans différents matériaux. Cependant, ils seront de préférence réalisés dans des matériaux caoutchoutés ou analogues. It is obvious that the pads 10 and 20 can be made of different materials. However, they will preferably be made from rubberized materials or the like.
La Demanderesse a constaté que, après la mise en place de tampons comme les tampons 10 et 20 décrits ci-dessus sur un orifice 2 débouchant sur une arête 23 d'une pièce et après application des forces de pression 51 sur les plaques 50, il ne se produisait aucune fuite au niveau de cette arête 23. The Applicant has found that, after the installation of buffers such as the buffers 10 and 20 described above on an orifice 2 opening onto an edge 23 of a part and after application of the pressure forces 51 on the plates 50, it there was no leakage at this edge 23.
Une application avantageuse du procédé décrit ci-dessus est donc le bouchage des orifices d'une pièce 1 comme un carter-chapeau de moteur automobile dont on désire tester l'étanchéité. Avant de mettre en oeuvre les programmes de tests d'étanchéité proprement dits, qui sont bien connus en euxmêmes et qui ne seront donc pas décrits ici, d'autant plus qu'ils n'entrent pas dans le cadre de la protection de la présente invention, on procède tout d'abord au bouchage de tous les orifices que comporte la pièce à tester, par la mise en place de tampons, et notamment de tampons comme les tampons 10 et 20 décrits ci-dessus sur les orifices 2 débouchant sur les arêtes 23 de la pièce à tester, et par application des forces de pression 51 sur les plaques 50. An advantageous application of the method described above is therefore the plugging of the orifices of a part 1 such as a crankcase of an automobile engine whose tightness is to be tested. Before implementing the actual leakage test programs, which are well known in themselves and which will therefore not be described here, all the more since they do not fall within the scope of the protection of the present invention, first of all the plugging of all the orifices that the part to be tested is made, by the installation of buffers, and in particular of buffers like the buffers 10 and 20 described above on the orifices 2 leading to the edges 23 of the part to be tested, and by applying pressure forces 51 to the plates 50.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0100571A FR2819438B1 (en) | 2001-01-17 | 2001-01-17 | METHOD FOR PLUGGING AN ORIFICE IN A PART, SUCH AS A MOTOR VEHICLE HOUSING |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0100571A FR2819438B1 (en) | 2001-01-17 | 2001-01-17 | METHOD FOR PLUGGING AN ORIFICE IN A PART, SUCH AS A MOTOR VEHICLE HOUSING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2819438A1 true FR2819438A1 (en) | 2002-07-19 |
| FR2819438B1 FR2819438B1 (en) | 2003-02-28 |
Family
ID=8858898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0100571A Expired - Fee Related FR2819438B1 (en) | 2001-01-17 | 2001-01-17 | METHOD FOR PLUGGING AN ORIFICE IN A PART, SUCH AS A MOTOR VEHICLE HOUSING |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2819438B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1186810A3 (en) * | 2000-09-06 | 2004-11-17 | DFT Maschinenbau GmbH | Method and arrangement for sealing a construction element at a corner |
| FR2855778A1 (en) * | 2003-06-03 | 2004-12-10 | Euraltech Sa | Crankcases cavity closing method for motor vehicle, involves positioning plane joint against one of two sides, such that joint is supported on folded part, and crushing joints by exerting forces to cover sides |
| FR2862344A1 (en) * | 2003-11-13 | 2005-05-20 | Trace Sarl | Cylinder head chamber sealing system for motor vehicle, has stopper closing one opening, and second stopper with sealing support surface for closing mouth of another opening, when cylinder rod moves between retracted and extended positions |
| FR2865425A1 (en) * | 2004-01-23 | 2005-07-29 | Euraltech Sa | Crankcase`s cavity closing device for motor vehicle, has flat seal with insert extending inside seal, and O-ring seal fixed inside plate and having two parts placed opposite to edge of flat seal and against crankcase side, respectively |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683673A (en) * | 1971-04-29 | 1972-08-15 | Gen Motors Corp | Non-destructive test apparatus and method for grease packed bearings |
| US3895868A (en) * | 1972-05-05 | 1975-07-22 | Renault | Structure of internal combustion engines |
| US4342221A (en) * | 1980-07-28 | 1982-08-03 | Irontite Products, Co. Inc. | Engine cylinder head port closure pad clamp |
| US4489594A (en) * | 1983-05-03 | 1984-12-25 | Irontite Products Co., Inc. | Pad clamp for closing off water port in engine block |
| FR2668826A1 (en) * | 1990-11-06 | 1992-05-07 | Beltra Antoine | Method for searching for leaks in the various parts of heat engine bodies |
| US5883302A (en) * | 1994-06-28 | 1999-03-16 | Kent & Swart Investments Cc | Pressure testing of engine components having coolant flow paths |
-
2001
- 2001-01-17 FR FR0100571A patent/FR2819438B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683673A (en) * | 1971-04-29 | 1972-08-15 | Gen Motors Corp | Non-destructive test apparatus and method for grease packed bearings |
| US3895868A (en) * | 1972-05-05 | 1975-07-22 | Renault | Structure of internal combustion engines |
| US4342221A (en) * | 1980-07-28 | 1982-08-03 | Irontite Products, Co. Inc. | Engine cylinder head port closure pad clamp |
| US4489594A (en) * | 1983-05-03 | 1984-12-25 | Irontite Products Co., Inc. | Pad clamp for closing off water port in engine block |
| FR2668826A1 (en) * | 1990-11-06 | 1992-05-07 | Beltra Antoine | Method for searching for leaks in the various parts of heat engine bodies |
| US5883302A (en) * | 1994-06-28 | 1999-03-16 | Kent & Swart Investments Cc | Pressure testing of engine components having coolant flow paths |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1186810A3 (en) * | 2000-09-06 | 2004-11-17 | DFT Maschinenbau GmbH | Method and arrangement for sealing a construction element at a corner |
| FR2855778A1 (en) * | 2003-06-03 | 2004-12-10 | Euraltech Sa | Crankcases cavity closing method for motor vehicle, involves positioning plane joint against one of two sides, such that joint is supported on folded part, and crushing joints by exerting forces to cover sides |
| FR2862344A1 (en) * | 2003-11-13 | 2005-05-20 | Trace Sarl | Cylinder head chamber sealing system for motor vehicle, has stopper closing one opening, and second stopper with sealing support surface for closing mouth of another opening, when cylinder rod moves between retracted and extended positions |
| FR2865425A1 (en) * | 2004-01-23 | 2005-07-29 | Euraltech Sa | Crankcase`s cavity closing device for motor vehicle, has flat seal with insert extending inside seal, and O-ring seal fixed inside plate and having two parts placed opposite to edge of flat seal and against crankcase side, respectively |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2819438B1 (en) | 2003-02-28 |
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| TP | Transmission of property |
Owner name: MARPOSS, FR Effective date: 20150121 |
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| ST | Notification of lapse |
Effective date: 20160930 |