FR2715224A1 - Oil level measuring device for car engine - Google Patents
Oil level measuring device for car engine Download PDFInfo
- Publication number
- FR2715224A1 FR2715224A1 FR9400571A FR9400571A FR2715224A1 FR 2715224 A1 FR2715224 A1 FR 2715224A1 FR 9400571 A FR9400571 A FR 9400571A FR 9400571 A FR9400571 A FR 9400571A FR 2715224 A1 FR2715224 A1 FR 2715224A1
- Authority
- FR
- France
- Prior art keywords
- guide
- oil
- integral
- enclosure
- oil pan
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
- F01M11/12—Indicating devices; Other safety devices concerning lubricant level
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
L'invention concerne les dispositifs indicateurs de niveau de liquide et, plus particulièrement les jauges manuelles utilisées pour mesurer le niveau dans le carter d'huile d'un moteur à combustion interne de véhicule automobile. The invention relates to liquid level indicating devices and, more particularly to the manual gauges used to measure the level in the oil pan of an internal combustion engine of a motor vehicle.
Les jauges de ce type sont bien connues. Elles sont habituellement constituées d'une lame portant une échelle graduée et munie à son extrémité d'un moyen de préhension, en forme de crosse ou d'anneau. A l'aide de ce moyen, on extrait la lame d'un conduit de guidage formé, ordinairement, dans le carter cylindre pour lire sur l'échelle la trace laissée par l'huile à son niveau de remplissage. La lame est maintenue dans le conduit de guidage par l'intermédiaire d'un bouchon étanche. Gauges of this type are well known. They usually consist of a blade carrying a graduated scale and provided at its end with a gripping means, in the form of a butt or ring. By means of this means, the blade is extracted from a guide duct formed, ordinarily, in the cylinder block to read on the scale the trace left by the oil at its filling level. The blade is held in the guide duct by means of a tight plug.
Pour des raisons de rapidité et de commodité d'entretien, les vidanges du carter d'huile tendent à se faire, non plus par gravitation, c'est-à-dire en vidant l'huile qu'il contient par le fond du carter, mais par aspiration de celle-ci à travers le conduit de guidage de la jauge. Cette façon de procéder implique la réalisation d'un conduit de longueur relativement importante s'étendant jusqu'au fond du bac à huile, de manière à guider correctement la canule d'aspiration. For reasons of speed and convenience of maintenance, the oil sump tends to be done, no longer by gravity, that is to say by emptying the oil it contains by the bottom of the sump , but by aspiration of the latter through the guide duct of the gauge. This procedure involves the creation of a relatively large length of pipe extending to the bottom of the oil tank, so as to correctly guide the suction cannula.
Cet allongement du conduit n'est pas sans inconvénient. En effet, comme on l'a vu, il est d'ordinaire intégré au carter cylindre, de sorte que l'encombrement de celui-ci est augmenté, ce qui rend plus difficile son assemblage sur les lignes de production. En outre, comme on l'a également dit, la jauge est munie d'un bouchon étanche engagée dans le conduit et qui obture donc celui-ci. Comme, par ailleurs, il descend audessous du niveau de liquide, une surpression se crée qui engendre une baisse du niveau et donc une lecture erronée sur l'échelle graduée de la lame. This lengthening of the duct is not without drawbacks. Indeed, as we have seen, it is usually integrated into the cylinder block, so that the bulk thereof is increased, which makes it more difficult to assemble on the production lines. In addition, as has also been said, the gauge is provided with a tight plug engaged in the conduit and which therefore closes the latter. As, moreover, it descends below the liquid level, an overpressure is created which generates a drop in the level and therefore an erroneous reading on the graduated scale of the slide.
Pour remédier à cet effet indésirable sur l'exactitude de la mesure de niveau, on a proposé, par exemple dans Eu422 448, de pratiquer dans le conduit, au-dessus du niveau maximum de remplissage, des ouvertures de compensation de pression. Cette solution n'apporte toutefois aucune solution au problème de l'encombrement du tube de guidage. To remedy this undesirable effect on the accuracy of the level measurement, it has been proposed, for example in Eu422 448, to make pressure compensation openings in the conduit, above the maximum filling level. This solution does not however provide any solution to the problem of the size of the guide tube.
Pour résoudre à la fois les deux inconvénients ci-dessus mentionnés, I'invention propose donc un dispositif indicateur de niveau d'huile, du type précité dans lequel, selon l'invention, le guide dans lequel est introduite la lame de jauge est constitué d'un premier élément solidaire du carter d'huile et d'un second élément solidaire du carter cylindre du moteur, munis, chacun, d'un moyen d'assemblage à l'autre. To resolve both of the two drawbacks mentioned above, the invention therefore proposes an oil level indicator device, of the aforementioned type in which, according to the invention, the guide into which the dipstick is inserted is constituted a first element integral with the oil pan and a second element integral with the cylinder block of the engine, each provided with an assembly means to the other.
Lesdits moyens sont, en outre, situés à l'intérieur de l'enceinte fermée formée par l'assemblage des deux carters précités, sensiblement audessus du niveau maximum de remplissage du carter d'huile, et comportent un dispositif de mise à l'air libre de l'intérieur du guide de la jauge.Said means are, moreover, located inside the closed enclosure formed by the assembly of the two aforementioned casings, substantially above the maximum filling level of the oil pan, and comprise a venting device. free from inside the gauge guide.
- Selon un mode de réalisation, le premier élément du guide de jauge porte un embout dans lequel s'emmanche, sans contact, I'extrémité coopérante du second élément dont le diamètre externe est suffisamment inférieur au diamètre interne de l'embout pour ménager, entre les parois en regard, un jeu ou passage assurant les échanges gazeux entre l'intérieur du guide de jauge et la partie de l'enceinte non remplie par le liquide. According to one embodiment, the first element of the gauge guide carries an endpiece in which is fitted, without contact, the cooperating end of the second element whose external diameter is sufficiently smaller than the internal diameter of the endpiece to spare, between the facing walls, a clearance or passage ensuring the gas exchanges between the interior of the gauge guide and the part of the enclosure not filled with liquid.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, pour la compréhension de laquelle on se reportera à la figure unique annexée qui est une vue en coupe longitudinale d'un dispositif selon l'invention. Other characteristics and advantages of the invention will appear on reading the detailed description which follows, for the understanding of which reference will be made to the single appended figure which is a view in longitudinal section of a device according to the invention .
Un carter d'huile 1 est fixé en 2, par des moyens non représentés (par exemple par un système vis/écrou) sur un carter cylindre 3 d'un moteur à combustion interne d'un véhicule automobile. Ce montage définit ainsi une enceinte fermée E dans laquelle est introduite l'huile de lubrification du moteur jusqu'à un niveau maximum de remplissage N, représenté en traits mixtes sur la figure. An oil pan 1 is fixed at 2, by means not shown (for example by a screw / nut system) on a cylinder crankcase 3 of an internal combustion engine of a motor vehicle. This assembly thus defines a closed enclosure E into which the engine lubricating oil is introduced up to a maximum filling level N, shown in phantom in the figure.
Le carter cylindre 3 présente une ouverture dans laquelle est emmanché à force un conduit 4. Ce conduit est muni d'une butée 5 limitant son insertion dans le carter de façon que son extrémité inférieure 6 débouche dans l'enceinte E sensiblement au-dessus du niveau maximum N de remplissage. A l'extrémité opposée, extérieurement à l'enceinte, le conduit 4 se termine par un évasement 7 formant réceptacle pour le bouchon étanche de la jauge, ainsi qu'on le décrira plus loin. The cylinder block 3 has an opening in which a duct 4 is force fitted. This duct is provided with a stop 5 limiting its insertion into the crankcase so that its lower end 6 opens into the enclosure E substantially above the maximum filling level N. At the opposite end, outside the enclosure, the duct 4 ends in a flaring 7 forming a receptacle for the tight plug of the gauge, as will be described later.
L'extrémité inférieure 6 du conduit est introduite dans l'embout 8 d'un tube 9 s'étendant tout entier à l'intérieur de l'enceinte fermée E de façon que son embouchure inférieure 10 soit adjacente au fond du carter d'huile 1 et, de préférence, située au-dessous du niveau minimum d'huile. The lower end 6 of the duct is introduced into the end piece 8 of a tube 9 extending entirely inside the closed enclosure E so that its lower mouth 10 is adjacent to the bottom of the oil pan 1 and preferably located below the minimum oil level.
Le tube 9 est maintenu dans le carter 1 par des pattes de fixation 11, solidaire de la paroi du carter précité.The tube 9 is held in the casing 1 by fixing lugs 11, integral with the wall of the aforementioned casing.
Le diamètre externe du conduit 4 est sensiblement inférieur au diamètre interne de l'embout 8 du tube 9. En outre, I'extrémité 6 de ce conduit engagée dans ledit embout n'est pas au contact de l'épaulement 13 défini entre le corps 12 du tube 9 et son embout 8. De la sorte, il est créé un jeu entre les parois en regard de cet embout et de l'extrémité 6 définissant un passage qui permet les échanges gazeux entre la partie de l'enceinte E non remplie par le liquide et l'intérieur du guide 15, constitué par le conduit 4 et le tube 9 ainsi assemblés. The external diameter of the conduit 4 is substantially less than the internal diameter of the end piece 8 of the tube 9. In addition, the end 6 of this pipe engaged in said end piece is not in contact with the shoulder 13 defined between the body 12 of the tube 9 and its end piece 8. In this way, a clearance is created between the walls opposite this end piece and the end 6 defining a passage which allows gas exchanges between the part of the enclosure E which is not filled by the liquid and the inside of the guide 15, constituted by the conduit 4 and the tube 9 thus assembled.
Dans le guide 15 est engagée une jauge constituée d'une lame 16 munie, à l'une de ses extrémités, d'un bouchon 17 sur lequel est fixée (ou venue de forme) une crosse de préhension 18. Le bouchon est introduit dans l'évasement 7 du conduit 4 et son étanchéité est assurée par deux joints toriques 19. In the guide 15 is engaged a gauge consisting of a blade 16 provided, at one of its ends, with a plug 17 on which is fixed (or come in shape) a grip stock 18. The plug is introduced into the flaring 7 of the duct 4 and its sealing is ensured by two O-rings 19.
II ressort de la description que l'on vient de faire que la surpression engendrée dans le guide 15 par la fermeture hermétique du bouchon 17, lorsque l'embouchure 10 est plongée dans l'huile du carter, est éliminée par le jeu 14 ménagé à la jonction des deux éléments dudit guide. Celui-ci assure, en effet, toujours la mise à l'air libre de l'intérieur du guide 15, puisqu'il est situé bien au-dessus du niveau maximum de remplissage du carter. It emerges from the description which has just been given that the overpressure generated in the guide 15 by the hermetic closure of the plug 17, when the mouth 10 is immersed in the oil of the casing, is eliminated by the clearance 14 provided at the junction of the two elements of said guide. This in fact always ensures the venting of the interior of the guide 15, since it is situated well above the maximum filling level of the casing.
L'assemblage du guide 15 se déduit également, sans difficulté, de la description précédente. Chacun des deux éléments constituant le guide 15 est amené avec la partie du moteur à laquelle il est fixé. Le conduit 4, solidaire du carter cylindre, est introduit dans l'embout 8 du tube 9, fixé sur la paroi inteme du carter d'huile, en même temps que se fait l'assemblage des deux carters. The assembly of the guide 15 is also deduced, without difficulty, from the preceding description. Each of the two elements constituting the guide 15 is brought with the part of the motor to which it is fixed. The conduit 4, integral with the cylinder block, is introduced into the end piece 8 of the tube 9, fixed to the inner wall of the oil pan, at the same time as the two casings are assembled.
Chaque élément du guide de jauge est donc contenu dans
I'encombrement de la partie du moteur dont il est solidaire, de sorte que l'encombrement de cette partie n'est pas augmenté.Each element of the gauge guide is therefore contained in
The size of the part of the engine which it is integral with, so that the size of this part is not increased.
On a donc réalisé un dispositif, servant à la fois de guide pour la jauge d'un carter d'huile et pour sa canule de vidange, qui ne soit pas encombrant et qui permette d'éviter les erreurs de lecture dues à la surpression pouvant exister dans un tel guide. A device has therefore been produced, serving both as a guide for the dipstick of an oil pan and for its drainage cannula, which is not bulky and which makes it possible to avoid reading errors due to the overpressure which may exist in such a guide.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9400571A FR2715224B1 (en) | 1994-01-20 | 1994-01-20 | Oil level indicator device for motor vehicle engine. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9400571A FR2715224B1 (en) | 1994-01-20 | 1994-01-20 | Oil level indicator device for motor vehicle engine. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2715224A1 true FR2715224A1 (en) | 1995-07-21 |
FR2715224B1 FR2715224B1 (en) | 1996-02-23 |
Family
ID=9459198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9400571A Expired - Fee Related FR2715224B1 (en) | 1994-01-20 | 1994-01-20 | Oil level indicator device for motor vehicle engine. |
Country Status (1)
Country | Link |
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FR (1) | FR2715224B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1450140A1 (en) * | 2003-02-21 | 2004-08-25 | Renault s.a.s. | Dip stick |
US6935044B2 (en) | 2001-06-13 | 2005-08-30 | Orscheln Products Llc | Connection system for a fluid level measuring device |
EP1605236A1 (en) * | 2004-06-08 | 2005-12-14 | Nissan Motor Company, Limited | Oil level gauge guide structure |
US7055384B2 (en) | 1996-02-27 | 2006-06-06 | Orscheln Products Llc | Fluid level measuring device |
JP2016014377A (en) * | 2014-07-03 | 2016-01-28 | 本田技研工業株式会社 | Oil level gauge assembly structure |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2388992A1 (en) * | 1977-04-28 | 1978-11-24 | List Hans | DEVICE FOR MEASURING THE OIL LEVEL IN SHIELDED INTERNAL COMBUSTION ENGINES TO ELIMINATE NOISE |
DE2923504A1 (en) * | 1979-06-09 | 1980-12-11 | Kloeckner Humboldt Deutz Ag | Oil level measurer for enclosed container - has measuring stick guided within sleeve and with disc arrested by projections in two end positions |
EP0022448A1 (en) * | 1979-06-09 | 1981-01-21 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Measuring device for an oil level with a solid-housing sheath and a retractable measuring stick |
JPS58187814A (en) * | 1982-04-26 | 1983-11-02 | Nissan Motor Co Ltd | Device for measuring quantity of liquid |
DE8632458U1 (en) * | 1986-12-04 | 1987-02-19 | Audi Ag, 8070 Ingolstadt, De |
-
1994
- 1994-01-20 FR FR9400571A patent/FR2715224B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2388992A1 (en) * | 1977-04-28 | 1978-11-24 | List Hans | DEVICE FOR MEASURING THE OIL LEVEL IN SHIELDED INTERNAL COMBUSTION ENGINES TO ELIMINATE NOISE |
DE2923504A1 (en) * | 1979-06-09 | 1980-12-11 | Kloeckner Humboldt Deutz Ag | Oil level measurer for enclosed container - has measuring stick guided within sleeve and with disc arrested by projections in two end positions |
EP0022448A1 (en) * | 1979-06-09 | 1981-01-21 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Measuring device for an oil level with a solid-housing sheath and a retractable measuring stick |
JPS58187814A (en) * | 1982-04-26 | 1983-11-02 | Nissan Motor Co Ltd | Device for measuring quantity of liquid |
DE8632458U1 (en) * | 1986-12-04 | 1987-02-19 | Audi Ag, 8070 Ingolstadt, De |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 8, no. 33 (P - 254)<1470> 14 February 1984 (1984-02-14) * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7055384B2 (en) | 1996-02-27 | 2006-06-06 | Orscheln Products Llc | Fluid level measuring device |
US6935044B2 (en) | 2001-06-13 | 2005-08-30 | Orscheln Products Llc | Connection system for a fluid level measuring device |
EP1450140A1 (en) * | 2003-02-21 | 2004-08-25 | Renault s.a.s. | Dip stick |
FR2851652A1 (en) * | 2003-02-21 | 2004-08-27 | Renault Sa | LEVEL CONTROL GAUGE |
EP1605236A1 (en) * | 2004-06-08 | 2005-12-14 | Nissan Motor Company, Limited | Oil level gauge guide structure |
US7159330B2 (en) | 2004-06-08 | 2007-01-09 | Nissan Motor Co., Ltd. | Oil level gauge guide structure |
JP2016014377A (en) * | 2014-07-03 | 2016-01-28 | 本田技研工業株式会社 | Oil level gauge assembly structure |
Also Published As
Publication number | Publication date |
---|---|
FR2715224B1 (en) | 1996-02-23 |
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