EP0538660B1 - Einrichtung zur automatischen Nachfüllung mit Schmieröl - Google Patents

Einrichtung zur automatischen Nachfüllung mit Schmieröl Download PDF

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Publication number
EP0538660B1
EP0538660B1 EP92116855A EP92116855A EP0538660B1 EP 0538660 B1 EP0538660 B1 EP 0538660B1 EP 92116855 A EP92116855 A EP 92116855A EP 92116855 A EP92116855 A EP 92116855A EP 0538660 B1 EP0538660 B1 EP 0538660B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
liquid
sump
container
piston
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.)
Expired - Lifetime
Application number
EP92116855A
Other languages
English (en)
French (fr)
Other versions
EP0538660A1 (de
Inventor
Carlo Benedetto
Mauro Chicarella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Irisbus Italia SpA
Original Assignee
Iveco Fiat SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iveco Fiat SpA filed Critical Iveco Fiat SpA
Publication of EP0538660A1 publication Critical patent/EP0538660A1/de
Application granted granted Critical
Publication of EP0538660B1 publication Critical patent/EP0538660B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01M11/04—Filling or draining lubricant of or from machines or engines

Definitions

  • the present invention relates to an automatic device for topping up the liquid in a container.
  • the invention relates in particular to an automatic device for topping up lubricating oil in the sump of an internal combustion engine.
  • automatic top-up devices comprise a system with containers which communicate with float-chambers, or systems in which the oil level in the sump or in the communicating container is detected electronically and topped up by means of an electric pump.
  • An example of the automatic top-up devices of this second type is disclosed in document EP-0 416 688 and comprises an electronic control device, e.g. a processor, which is programmed for metering and topping up the oil level in the sump of an engine.
  • an electronic control device e.g. a processor, which is programmed for metering and topping up the oil level in the sump of an engine.
  • the device includes a sensor cylinder having a piston slidable sealingly in a chamber and being disposed substantially at the desired level for the liquid in the container, the chamber having at least one hole for the passage of the liquid, an actuator cylinder having a piston and inlet and outlet connectors connected to a supplementary reservoir and to the container, respectively, with the interposition of non-return valves, mechanical connection means between the pistons of the sensor cylinder and the actuator cylinder, and programmed operating means for moving the pistons of the sensor and actuator cylinders, the presence or absence of liquid in the chamber of the sensor cylinder preventing or enabling the sliding of the pistons, and the piston of the actuator cylinder thus supplying to the container a quantity of liquid which is correlated with the level of the liquid in the container.
  • the operation of the sensor cylinder is based substantially on the non-compressibility of liquids.
  • the quantity of liquid in the chamber of the sensor cylinder is proportional to the level of the liquid in the container; the actuator cylinder can therefore deliver a certain quantity of liquid only when there is a certain quantity of compressible air in the chamber.
  • the mechanical connection between the pistons of the sensor and actuator cylinders makes the device particularly compact and reliable and its electronics are considerably simplified and are limited to a timer associated with the operating means.
  • the sensor cylinder comprises a blind cylinder disposed with its axis substantially parallel to the surface of the liquid in the container, the arrangement of its axis being such that, in the configuration in which the level in the container is at its maximum, the cylinder is almost completely covered by the liquid.
  • the maximum level of the oil in the oil sump, indicated C, of a commercial vehicle engine is indicated L in Figure 1.
  • the axis of a blind cylinder 10 fixed in the sump C is substantially parallel to the surface of the oil and is disposed so that, in the configuration shown in Figure 1, in which the level is at its maximum, the surface L laps over the wall of the cylinder 10.
  • the cylinder 10 defines a chamber 12 in which a piston 14 is sealingly slidable.
  • the cylindrical surface of the cylinder 10 has holes 16 adjacent an end opposite its blind end, indicated 10a, through which the oil can pass and the function of which will become clear from the following description.
  • the centre of the piston 14 is fixed to a rod 18 which is slidable sealingly in a through-hole 20 in a side wall P of the sump C.
  • the actuator cylinder 24 has a cylindrical chamber 26 in which the piston 22 is sealingly slidable and has an end 24a with two connectors 28, 30 which are connected to a supplementary oil reservoir 32 and to the sump C, respectively, by means of pipes 28a and 30a.
  • Non-return valves 34 and 36 are fitted in the pipes 28a and 30a, respectively.
  • the level in the chamber 12 of the blind cylinder 10 When the level L in the sump falls, for example, to a level L1, as shown in Figure 2, the level in the chamber 12 of the blind cylinder 10 also falls simultaneously, by virtue of the presence of the through-holes 16.
  • the operation of the pneumatic cylinder 42 thus enables the piston 14 to travel a distance proportional to the volume of air initially present in the chamber 12 of the cylinder 10 ( Figure 2).
  • the stroke of the piston 14 corresponds to the stroke of the piston 22 of the actuator 24 which delivers a quantity of oil such as to top up the level L1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Basic Packing Technique (AREA)

Claims (6)

  1. Automatische Vorrichtung zum Nachfüllen der Flüssigkeit in einem Behälter, insbesondere zum Nachfüllen von Schmieröl in der Wanne eines Verbrennungsmotors, dadurch gekennzeichnet, daß diese umfaßt:
    - einen Prüfzylinder (10) mit einem Kolben (14), der in einer Kammer (12) dichtend bewegbar und im wesentlichen auf der für die Flüssigkeit im Behälter (C) gewünschten Höhe (L) angeordnet ist, wobei die Kammer (12) zumindest eine Öffnung (16) für den Durchtritt der Flüssigkeit aufweist,
    - einen Stellzylinder (24) mit einem Kolben (22) und Einlaß- und Auslaßverbindern (28, 30), die mit einem Zusatzbehälter (32) bzw. mit dem Behälter (C) verbunden sind, wobei Rückschlagventile (34, 36) eingesetzt sind,
    - mechanische Verbindungsmittel (18) zwischen den Kolben (14, 22) des Prüfzylinders (10) und des Stellzylinders (24), und
    - programmierte Betätigungsmittel (42, 48, 44) zum Bewegen der Kolben (14, 22) des Prüfzylinders und des Stellzylinders (10, 24), wobei das Vorhandensein oder Fehlen von Flüssigkeit in der Kammer (12) des Prüfzylinders (10) die Bewegung der Kolben (14, 22) verhindert oder ermöglicht, und der Kolben (22) des Stellzylinders (24) somit eine Flüssigkeitsmenge dem Behälter (C) zuführt, die vom Flüssigkeitsstand im Behälter (C) abhängig ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Prüfzylinder einen Blindzylinder (10) umfaßt, der mit seiner Achse im wesentlichen parallel zur Oberfläche (L, L₁) der Flüssigkeit im Behälter (C) angeordnet ist, wobei seine Achse so liegt, daß der Zylinder (10) bei maximalem Flüssigkeitsstand (L) im Behälter fast vollständig von der Flüssigkeit bedeckt ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die mechanischen Verbindungsmittel eine einzige Stange (18) zum Betätigen der Kolben (14, 22) umfassen.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die programmierten Betätigungsmittel einen Druckmittelzylinder (42) zum Bewegen der Stange (18) und Zeitgebermittel (48) umfassen, die dem Druckmittelzylinder (42) zugeordnet sind und sein periodisches Arbeiten bewirken.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Blindzylinder (10) in der Wanne (C) eines Motors angeordnet ist, wobei die Betätigungsstange (18) dichtend durch eine Öffnung (20) in der Wanne (C) bewegbar ist.
  6. Vorrichtung nach Anspruch 1 zum automatischen Nachfüllen von Schmieröl in der Wanne einer Verbrennungsmotors, dadurch gekennzeichnet, daß:
    - der Prüfzylinder einen Blindzylinder (10) umfaßt, der die zumindest eine Öffnung (16) für den Durchtritt der Flüssigkeit aufweist und in der Wanne (C) parallel zur Oberfläche (L, L₁) der Flüssigkeit und im wesentlichen fluchtend mit der Oberfläche (L) ist, wenn er sich bei maximalem Flüssigkeitsstand in untergetauchtem Zustand befindet, wobei der Kolben (14) des Prüfzylinders im Blindzylinder (10) bewegbar und mit Hilfe einer Stange (18) betätigbar ist, die dichtend durch eine Öffnung (20) in der Seite der Wanne (C) verschiebbar ist,
    - der Stellzylinder (24) den an der Stange (18) koaxial befestigten Kolben (22) und eine Kammer (27) aufweist, die mit dem Zusatzbehälter (32) bzw. der Wanne (C) des Motors verbunden ist, wobei Rückschlagventile (34, 36) eingesetzt sind, und
    - die programmierten Betätigungsmittel einen pneumatischen Arbeitszylinder (42) umfassen, der einen koaxial an der Stange (18) befestigten Kolben (40) aufweist und Zeitgebermitteln (48) zugeordnet ist, die ihn periodisch mit einer Druckluftquelle (44) in Verbindung setzen.
EP92116855A 1991-10-24 1992-10-01 Einrichtung zur automatischen Nachfüllung mit Schmieröl Expired - Lifetime EP0538660B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO910803 1991-10-24
ITTO910803A IT1250322B (it) 1991-10-24 1991-10-24 Dispositivo automatico di rabbocco olio motore.

Publications (2)

Publication Number Publication Date
EP0538660A1 EP0538660A1 (de) 1993-04-28
EP0538660B1 true EP0538660B1 (de) 1995-12-06

Family

ID=11409665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116855A Expired - Lifetime EP0538660B1 (de) 1991-10-24 1992-10-01 Einrichtung zur automatischen Nachfüllung mit Schmieröl

Country Status (4)

Country Link
EP (1) EP0538660B1 (de)
DE (1) DE69206576T2 (de)
ES (1) ES2080407T3 (de)
IT (1) IT1250322B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295015B (en) * 1994-11-11 1998-06-24 Ravary Abdolmehdy Baghai Vehicle systems
DE19529733C1 (de) * 1995-08-12 1996-12-05 Mtu Friedrichshafen Gmbh Schmiermittelversorgungssystem für Brennkraftmaschinen
IT1281065B1 (it) * 1995-12-12 1998-02-11 Iveco Fiat Dispositivo per il rabbocco automatico di liquido in un contenitore e metodo di controllo di tale dispositivo.
IT1281064B1 (it) * 1995-12-12 1998-02-11 Iveco Fiat Dispositivo per il rabbocco automatico di liquido in un contenitore.
CN107606123B (zh) * 2017-11-08 2023-07-25 白城吉电绿电能源有限公司 用于风力发电机齿轮箱的润滑油供给装置
CN107588185B (zh) * 2017-11-08 2023-09-08 大唐桦川风力发电有限公司 风力发电机齿轮箱的润滑油供给装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575533A (en) * 1969-03-20 1971-04-20 Caterpillar Tractor Co Liquid level sensing device
GB2084667B (en) * 1980-09-29 1984-08-08 Hurner Erwin Edward Oil cleaning system
NL8902235A (nl) * 1989-09-06 1991-04-02 Groeneveld Transport Effic Olieniveau-regelaar.

Also Published As

Publication number Publication date
EP0538660A1 (de) 1993-04-28
IT1250322B (it) 1995-04-07
ITTO910803A0 (it) 1991-10-24
ITTO910803A1 (it) 1993-04-25
DE69206576T2 (de) 1996-05-02
ES2080407T3 (es) 1996-02-01
DE69206576D1 (de) 1996-01-18

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