WO2000019068A1 - Dispositif de montage d'une sonde dans une chambre, notamment dans un compartiment prevu pour un moteur a combustion interne - Google Patents

Dispositif de montage d'une sonde dans une chambre, notamment dans un compartiment prevu pour un moteur a combustion interne Download PDF

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Publication number
WO2000019068A1
WO2000019068A1 PCT/CH1999/000408 CH9900408W WO0019068A1 WO 2000019068 A1 WO2000019068 A1 WO 2000019068A1 CH 9900408 W CH9900408 W CH 9900408W WO 0019068 A1 WO0019068 A1 WO 0019068A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting
shells
mounting device
tube
mounting tube
Prior art date
Application number
PCT/CH1999/000408
Other languages
German (de)
English (en)
Inventor
David Stedham
Original Assignee
Electrical Engineering Company Ltd.
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 Electrical Engineering Company Ltd. filed Critical Electrical Engineering Company Ltd.
Priority to AU54042/99A priority Critical patent/AU5404299A/en
Publication of WO2000019068A1 publication Critical patent/WO2000019068A1/fr

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

Definitions

  • Mounting device for mounting a probe in a chamber, in particular in the Motorxatr of an internal combustion engine
  • the invention relates to an assembly device according to the preamble of claim 1.
  • the term probe is to be understood in the broadest sense here and can be used, for example, to record physical data such as temperature and pressure, but also to record atmospheric data, such as, in particular, the oil mist concentration in an engine compartment. and ultimately for taking samples from a chamber or also for venting them.
  • Mounting devices of the type mentioned at the outset are known, for example from WO 98/11331. It is disadvantageous that the assembly device cannot be attached from the outside of the chamber. A labyrinth device required to protect the probe must be attached to the mounting tube inside the chamber.
  • the purpose of the invention is to improve a mounting device of the type mentioned at the outset in such a way that it can be mounted from the outside of the chamber. According to the invention, this object is achieved by the characterizing features of claim 1.
  • the labyrinth device consists of shells made of elastic material arranged coaxially around the head part, the openings of which are offset from one another, the whole in such a way that the shells can be stretched in the longitudinal direction of the mounting tube, it is possible to reduce the shells in their outer diameter in such a way that that this corresponds essentially to the outer diameter of the mounting tube, so that the labyrinth device can be pushed through a corresponding hole in the wall of a chamber. After relaxing, the labyrinth device expands again and is available for attaching the probe.
  • the labyrinth device has at least two shells. But there can also be several.
  • the embodiment according to claim 2 with three shells is particularly advantageous.
  • the shells can have any shape, but rotationally symmetrical shapes are preferred.
  • the shells can be concentric spherical shells.
  • the onion-like design of the labyrinth device also favors the stretching of the labyrinth device in the longitudinal axis of the mounting tube.
  • the shells can form a free gap between them. According to claim 4, however, it is advantageous in the central plane transverse to the longitudinal axis of the mounting tube to connect shells with bendable wall parts that facilitate the expansion of the labyrinth device after installation.
  • the wall parts can also contribute to the removal of separated liquid particles.
  • the holes in the shells can have any shape.
  • An embodiment according to claim 5 is very particularly preferred, since the configuration as elongated holes which run in the longitudinal direction of the mounting tube make it easier to stretch the labyrinth device in the longitudinal direction of the tube.
  • a further development according to claim 6 is also expedient, which improves the removal of accumulating liquid in the labyrinth device.
  • a further development according to claim 7 is particularly advantageous for this.
  • An embodiment of the assembly device according to claim 8 is also expedient.
  • the passage opening arranged on the side facing away from the assembly tube can either facilitate the penetration of chamber atmosphere into the labyrinth seal or the probe can observe the chamber interior by means of a suitable measuring device through the passage opening, for example by means of optical means .
  • an embodiment according to claim 9 is advantageous.
  • a further advantageous embodiment of the mounting device results from claim 10, wherein the shells are connected to one another on the side facing away from the mounting tube and have a support flange for attaching a stretching tool.
  • a stretching tool can be an inserted probe, for example, which is supported on the support flanges and is used to stretch the labyrinth device in the longitudinal direction of the mounting tube.
  • Other suitable stretching tools are screwdrivers, pipe wrenches and the like.
  • the mounting tube can be designed in any way and fastened in a bore in a chamber.
  • the embodiment according to claim 11 is very particularly preferred, as a result of which the assembly of the assembly device is made considerably easier since there is no screw connection between the assembly tube and the wall of the chamber.
  • Figure 1 shows a mounting device on a
  • FIG. 1 shows the mounting device of Figure 1 in
  • FIGS 1 and 2 show a mounting device for mounting a probe 2 in a chamber 4 of an object, the interior of which requires special monitoring.
  • a chamber can be, for example, the housing of a transmission or, in particular, the interior of an internal combustion engine, as described, for example, in W098 / 11331.
  • the mounting device has a mounting tube 6 which is arranged in a bore 8 in a chamber wall 10 of the chamber 4.
  • the mounting tube 6 contains a head part 12, on which a labyrinth device 14 is arranged, which surrounds a probe 2, which is inserted through the mounting tube 6 into the labyrinth device 14.
  • the labyrinth device 14 is formed by at least two shells arranged coaxially around the head part 12 in the present example 3, specifically by an inner shell 18 which is surrounded by a middle shell 20, to which the outer shell 22 is connected on the outside.
  • the shells contain mutually offset openings 24, 26, 28 which are designed as elongated holes and extend practically over the entire length of the shells in the direction of the longitudinal axis 30 of the mounting tube 6.
  • the openings 24, 26, 28 are offset from one another from shell to shell, so that no direct connection between the atmosphere of the chamber 4 and the probe 2 is possible.
  • the labyrinth device is preferably designed in the manner of an onion, the shells 18, 20, 22 being connected to one another at the end 32 facing the head part 12 and at the opposite end 34 and each pointing outwards.
  • the openings 28 of the outer shell 24 are provided with outward-pointing deflection lips 36 in order to prevent any liquid that may strike the outer shell 22 from entering the opening 28.
  • an opening 28a of the outer shell 22 is arranged at the lowest point of the labyrinth device 14.
  • the shell part 20a of the middle shell 20, which lies above the lower opening 28a of the outer shell 22, is designed in such a way that no liquid can collect there, ie this shell part is at least horizontally or, if appropriate, curved inwards.
  • the shells 18, 20, 22 are fastened to the mounting end part 32 on the mounting tube 6, preferably vulcanized.
  • the free end part 34 of the labyrinth device 14 is preferably provided with a passage opening 28 which widens outwards.
  • the passage opening 38 is equipped with a support flange 40 which is suitable for attaching a stretching tool.
  • the probe 2 is supported on this support flange 40.
  • the shells 18, 20, 22 consist of elastic material, such as natural or artificial rubber, and are designed such that they can be tapered by longitudinal stretching in the direction of the longitudinal axis 30 of the mounting tube 6 in such a way that the outside diameter of the labyrinth device 14 essentially corresponds to the outside diameter corresponds to the mounting tube 6, so that the labyrinth device can be inserted into the chamber 4 from the outside through the bore 8 in the chamber wall 10 in the stretched state.
  • this can optionally be provided with wall parts 44 arranged in the central plane 42, which connects the shells 28, 22 in the manner of a membrane.
  • the wall part 44 must be bendable in such a way that the aforementioned stretching of the labyrinth device and the reduction in diameter to the outside diameter of the mounting tube is possible.
  • the mounting tube consists of a metallic inner tube 46, which has an external thread on the side facing away from the labyrinth device 14 48 is provided, on which a fastening nut 50 is screwed.
  • the latter is against the end face 52 of a jacket 54 surrounding the inner tube, which is made of elastic material in order to preload it radially against the inside of the bore 8 in the chamber wall 10 when it is fastened.
  • the inner tube is provided with circumferential ribs 56 which engage in a form-fitting manner in the surrounding jacket in order to prevent displacement of the jacket 54 relative to the inner tube 46 when the jacket 54 is compressed by means of the fastening nut 50.
  • the fastening nut 50 is also provided with a conical section 58 in order to center the mounting tube 6 in the bore 8.
  • the bore 8 is preferably also provided with a bevel 60.
  • the fastening nut 50 also contains an internal thread 62 into which a fastening screw of a probe 2 can be screwed in order to fix it in the assembly device.
  • the mounting device is particularly suitable for receiving an oil mist detector, which is only indicated by dashed lines, as is used for monitoring the engine compartment of an internal combustion engine.
  • the labyrinth seal 14 allows the oil mist atmosphere to penetrate into the probe 2, but prevents it from being contaminated by spray oil, as a result of which the measurement results of the oil mist detector are either falsified or even made impossible by contamination.
  • Other probes can also be used in the mounting device, which can be used, for example, to determine the temperature or pressure of the atmosphere in the chamber. Probes are also conceivable, which can be arranged in the mounting device for suction or for taking samples. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Le dispositif de montage selon l'invention présente un tube de montage (6) à fixer dans un trou (8) d'une paroi de chambre (10). Ce tube présente une partie tête (12) en communication avec l'atmosphère de la chambre, servant à recevoir une sonde (2), et un système de labyrinthe (14) entourant la partie tête (12). Ce système de labyrinthe (14) contient au moins deux placées de manière coaxiale autour de la partie tête (12) et présentant des ouvertures (24, 26, 28, 28a). Les ouvertures des deux coques (18, 20, 24) sont décalées les unes par rapport aux autres. Les coques (18, 20, 24) sont fixées sur le tube de montage (6) et sont constituées d'un matériau élastique, de sorte que le diamètre extérieur des coques (18, 20, 24) puisse être réduit de manière à correspondre pratiquement au diamètre extérieur du tube de montage (6), par étirage dans le sens longitudinal du tube de montage (6), afin d'introduire le système de labyrinthe de l'extérieur, à travers le trou (8), dans la chambre (4) où il est ensuite fixé.
PCT/CH1999/000408 1998-09-24 1999-09-03 Dispositif de montage d'une sonde dans une chambre, notamment dans un compartiment prevu pour un moteur a combustion interne WO2000019068A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54042/99A AU5404299A (en) 1998-09-24 1999-09-03 Mounting device for mounting a sensor in a chamber, especially in the engine compartment of an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1947/98 1998-09-24
CH194798 1998-09-24

Publications (1)

Publication Number Publication Date
WO2000019068A1 true WO2000019068A1 (fr) 2000-04-06

Family

ID=4222318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1999/000408 WO2000019068A1 (fr) 1998-09-24 1999-09-03 Dispositif de montage d'une sonde dans une chambre, notamment dans un compartiment prevu pour un moteur a combustion interne

Country Status (2)

Country Link
AU (1) AU5404299A (fr)
WO (1) WO2000019068A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249082A (en) * 1977-09-20 1981-02-03 Cybernet Electronics Corporation Photoelectric smoke sensor box
GB2166232A (en) * 1984-10-10 1986-04-30 Lee Dickens Limited Monitoring oil mist level
US4666019A (en) * 1984-09-24 1987-05-19 Schaller-Automation Industrielle Automationstechnik Kg Device for monitoring lubrication in large diesel engines
GB2309076A (en) * 1996-01-10 1997-07-16 Kidde Fire Protection Ltd Detecting and separating particles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249082A (en) * 1977-09-20 1981-02-03 Cybernet Electronics Corporation Photoelectric smoke sensor box
US4666019A (en) * 1984-09-24 1987-05-19 Schaller-Automation Industrielle Automationstechnik Kg Device for monitoring lubrication in large diesel engines
GB2166232A (en) * 1984-10-10 1986-04-30 Lee Dickens Limited Monitoring oil mist level
GB2309076A (en) * 1996-01-10 1997-07-16 Kidde Fire Protection Ltd Detecting and separating particles

Also Published As

Publication number Publication date
AU5404299A (en) 2000-04-17

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