EP1767751B1 - Cylinder lubricating device for an engine - Google Patents

Cylinder lubricating device for an engine Download PDF

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Publication number
EP1767751B1
EP1767751B1 EP06120296A EP06120296A EP1767751B1 EP 1767751 B1 EP1767751 B1 EP 1767751B1 EP 06120296 A EP06120296 A EP 06120296A EP 06120296 A EP06120296 A EP 06120296A EP 1767751 B1 EP1767751 B1 EP 1767751B1
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EP
European Patent Office
Prior art keywords
lubricant
cylinder
oil
accordance
control system
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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.)
Not-in-force
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EP06120296A
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German (de)
French (fr)
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EP1767751A1 (en
Inventor
Stefan Aschwanden
Daniel Schmid
Priska Stiefenhofer
Norman Wijeyratne
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Wartsila NSD Schweiz AG
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Wartsila NSD Schweiz AG
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Priority to PL06120296T priority Critical patent/PL1767751T3/en
Priority to EP06120296A priority patent/EP1767751B1/en
Publication of EP1767751A1 publication Critical patent/EP1767751A1/en
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Publication of EP1767751B1 publication Critical patent/EP1767751B1/en
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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
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/14—Timed lubrication
    • 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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00

Definitions

  • the drive components comprise a pressure booster and a device with which the pumped lubricant is uniformly distributed to individual supply lines 12 and thus to the individual lubricant nozzles of an associated cylinder 8.
  • Fig. 3 shows the lubrication module 1 after assembly of the components or organs 3, 4, 5.
  • the pressure sensor 4 is inserted into a recess 24 of the base body 2, the controllable valve 5 in a recess 25 (see Fig. 2 ).
  • Said organs 3, 4, 5 have different functions, so that by their integration in the lubrication module 1 and the integration of the T-shaped branch for the servo oil present a functional combination. Through this functional association, there are savings in costs and space requirements.
  • the assembly is also simplified. In case of a defect will a lubrication module 1 simply replaced by an intact (new or revised) module 1. This allows an acceleration of a repair, which in turn reduces costs.
  • the main body 2 in which the lubricant pump, not shown, is contained, has two connection points 6a and 6b for the servo oil.
  • the central tube 161 of the double-walled pipe 16 is connected (with jacket tube 162) to a pipe end 60 of the base body 2, for example with a screw connection.
  • Flanges 163 at the ends of the jacket tube 162 are screwed onto the base body 2.
  • a channel 61 is integrated with a T-shaped branch and a branch 62 for the servo oil. This channel 61 connects the connection points 6a and 6b, while the branch 62 establishes a closable by the valve 5 lockable connection to the drive components of the lubricant pump.
  • the controller 10 of the higher-level control system 100 is freely programmable, so that the lubricant pump can be controlled or regulated in such a way that the quantity and / or the time of the delivered lubricant can be set as a function of the already mentioned operating parameters.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The system has a module attached with a lubricant pump, so that the pump provides a mechanically stable base plate (2), through which integration of a control device (3), pressure sensor (4) and control valve (5) in the module is made. A duct (61) with a T-shaped intersection (62) and a branch connection for servo oil are integrated within the plate. The sensor is arranged between the pump and a lubricant nozzle to monitor intermittent supply of the lubricant. An independent claim is also included for a method for lubricating a contact surface of a piston using the cylinder lubricating system.

Description

Die Erfindung betrifft ein Zylinderschmiersystem für eine Hubkolbenbrennkraftmaschine gemäss dem Oberbegriff des Anspruchs 1 sowie eine Hubkolbenbrennkraftmaschine mit einem solchen Schmiersystem. Die Erfindung bezieht sich auch auf ein Verfahren zum Schmieren einer Kolbenlauffläche mit einem erfindungsgemässen Zylinderschmiersystem.The invention relates to a cylinder lubrication system for a reciprocating internal combustion engine according to the preamble of claim 1 and a reciprocating internal combustion engine with such a lubrication system. The invention also relates to a method for lubricating a piston running surface with a cylinder lubrication system according to the invention.

Aus der CH-A- 673506 (= P.6140) ist eine Einrichtung zum Schmieren der Zylinder einer Hubkolbenbrennkraftmaschine bekannt. Es wird eine Pumpe offenbart, mit der sich das Schmiermittel, auch Zylinderöl genannt, intermittierend in den Zylinder einspritzen lässt. Die EP-A-1350929 (= P.7190) beschreibt eine Weiterentwicklung mit besonders ausgebildeten Schmiermitteldüsen. Mit dieser Düse lässt sich das Schmiermittel fächerartig über einen breiten Bereich auf der Kolbenlauffläche verteilen, ohne es dabei zu zerstäuben.From the CH-A-673506 (= P.6140) is a device for lubricating the cylinder of a reciprocating internal combustion engine known. A pump is disclosed with which the lubricant, also called cylinder oil, can be injected intermittently into the cylinder. The EP-A-1350929 (= P.7190) describes a further development with specially designed lubricant nozzles. With this nozzle, the lubricant can fan-like over a wide range on the piston tread distribute without atomizing it.

Aufgabe der Erfindung ist es, ein weiteres Zylinderschmiersystem zu schaffen, das hinsichtlich Kosten und hinsichtlich Aufwand bei einer Montage des Systems sowie bei einem Austausch von defekten Komponenten verbessert ist. Diese Aufgabe wird durch das im Anspruch 1 definierte Schmiersystem gelöstThe object of the invention is to provide a further cylinder lubrication system which improves in terms of cost and in terms of effort in a mounting of the system and in an exchange of defective components is. This object is achieved by the defined in claim 1 lubrication system

Das Zylinderschmiersystem für eine Mehrzahl von Zylindern in einer Hubkolbenbrennkraftmaschine dient zum Aufbringen von Schmiermittel in den Zylindern auf Kolbenlaufflächen mit jeweils einer Mehrzahl von Schmiermitteldüsen. Schmiermittel wird mit intermittierend fördernden Schmiermittelpumpen dosiert und pulsartig den Schmiermitteldüsen zugeführt. Antriebskomponenten der Schmiermittelpumpen sind an ein Öl leitendes Rohr angeschlossen. Jedem Zylinder ist ein Schmiermodul mit einer Schmiermittelpumpe zugeordnet. Die Schmiermittelpumpe bildet einen mechanisch stabilen Grundkörper, durch den eine Integration von diversen Organen hergestellt ist. Diese Organe sind a) eine lokale Steuerungseinheit, b) ein zwischen Schmiermittelpumpe und Schmiermitteldüse angeordneter Drucksensor für die Überwachung der intermittierenden Förderung des Schmiermittels, c) ein steuerbares Ventil für das Öl und d) optional weitere Organe, wie beispielsweise ein Akkumulator. Zwei Anschlussstellen für das Öl leitende Rohr sind am Grundkörper vorgesehen. Ein Kanal mit T-förmiger Abzweigung für das Öl ist im Grundkörper integriert. Dieser Kanal verbindet die Anschlussstellen während die Abzweigung eine durch das Ventil gesteuert verschliessbare Verbindung zu den Antriebskomponenten der Schmiermittelpumpe herstellt.The cylinder lubrication system for a plurality of cylinders in a reciprocating internal combustion engine is for applying lubricant in the cylinders to piston running surfaces each having a plurality of lubricant nozzles. Lubricant is dosed with intermittently pumping lubricant pumps and fed in pulses to the lubricant nozzles. Drive components of the lubricant pumps are connected to an oil-conducting pipe. Each cylinder is assigned a lubrication module with a lubricant pump. The lubricant pump forms a mechanically stable body, through which an integration of various organs is made. These organs are a) a local control unit, b) a pressure sensor arranged between lubricant pump and lubricant nozzle for monitoring the intermittent delivery of the lubricant, c) a controllable valve for the oil and d) optionally other organs, such as an accumulator. Two connection points for the oil-conducting pipe are provided on the main body. A channel with a T-shaped branch for the oil is integrated in the body. This channel connects the connection points while the branching establishes a connection which can be closed by the valve and is lockable to the drive components of the lubricant pump.

Die abhängigen Ansprüche 2 bis 6 betreffen vorteilhafte Ausführungsformen des erfindungsgemässen Zylinderschmiersystems. Der Anspruch 7 bezieht sich auf die Hubkolbenbrennkraftmaschine. Gegenstand der Ansprüche 8 und 9 sind Verfahren zum Schmieren einer Kolbenlauffläche mit dem erfindungsgemässen Zylinderschmiersystem.The dependent claims 2 to 6 relate to advantageous embodiments of the inventive cylinder lubrication system. The claim 7 relates to the reciprocating internal combustion engine. Subject matter of claims 8 and 9 are methods for lubricating a piston running surface with the inventive cylinder lubrication system.

Im Folgenden wird die Erfindung anhand von Zeichnungen näher erläutert. Es zeigen in teils stark vereinfachender Darstellung:

Fig. 1
eine bekannte Schmiermitteldüse, die in eine Zylinderwand eingebaut ist,
Fig. 2
einen zerlegten Schmiermodul des erfindungsgemässen Zylinderschmiersystems,
Fig. 3
den Schmiermodul gemäss Fig. 2 nach Zusammenbau der Komponenten und
Fig. 4
ein Schaltungsschema des erfindungsgemässen Zylinderschmiersystems.
In the following the invention will be explained in more detail with reference to drawings. It shows in partly strongly simplifying representation:
Fig. 1
a known lubricant nozzle which is installed in a cylinder wall,
Fig. 2
a disassembled lubrication module of the inventive cylinder lubrication system,
Fig. 3
according to the lubrication module Fig. 2 after assembling the components and
Fig. 4
a circuit diagram of the inventive cylinder lubrication system.

Das Zylinderschmiersystem dient dazu, für eine Mehrzahl von Zylindern 8 in einer Hubkolbenbrennkraftmaschine, insbesondere Zweitakt-Grossdieselmotor mit Längsspülung, Schmiermittel (oder Zylinderöl) in den Zylindern 8 auf Kolbenlaufflächen 80 mit jeweils einer Mehrzahl von Schmiermitteldüsen 7 aufzubringen. In der eingangs genannten EP-A-1350929 wird die in Fig. 1 als Schnitt gezeigte Schmiermitteldüse 7 beschrieben. Das Schmiermittel kann auch mittels anderer Düsentypen auf die Kolbenlaufflächen 80 aufgebracht werden, beispielsweise mit Düsen, die das Schmiermittel in Tropfenform und nicht fächerartig abgeben.The cylinder lubrication system serves for a plurality of cylinders 8 in a reciprocating internal combustion engine, in particular two-stroke large diesel engine with longitudinal rinse, apply lubricant (or cylinder oil) in the cylinders 8 on piston treads 80 each having a plurality of lubricant nozzles 7. In the aforementioned EP-A-1350929 will the in Fig. 1 Lubricating nozzle 7 shown as a section described. The lubricant can also be applied to the piston running surfaces 80 by means of other types of nozzles, for example with nozzles which deliver the lubricant in the form of drops and not fan-like.

Das Schmiersystem umfasst ausser den Schmiermitteldüsen eine Dosiereinheit und eine Ansteuereinrichtung (hier nicht dargestellt). Die Dosiereinheit ist eine intermittierend fördernde Schmiermittelpumpe, mit der das Schmiermittel dosiert und pulsartig den Schmiermitteldüsen zugeführt wird. Antriebskomponenten der Schmiermittelpumpe sind an ein Servo- oder Zylinderöl leitendes Rohr angeschlossen. Dieses Öl leitende Rohr kann einwandig oder als Doppelwandrohr ausgebildet sein. Nachfolgend wird die Ausführungsform mit dem Doppelwandrohr und dem Servoöl beschrieben. Diese Beschreibung gilt aber auch weitgehend, d.h. entsprechend angepasst, wenn das Öl leitende Rohr einwandig ist und anstelle des Servoöls das Zylinderöl, also das Schmiermittel verwendet wird. Die Antriebskomponenten umfassen einen Druckübersetzer und eine Einrichtung, mit der das gepumpte Schmiermittel gleichmässig auf einzelne Zuleitungen 12 und somit auf die einzelnen Schmiermitteldüsen eines zugeordneten Zylinders 8 verteilt wird.The lubrication system comprises, in addition to the lubricant nozzles, a metering unit and a drive device (not shown here). The dosing unit is an intermittently pumping lubricant pump, with which the lubricant is metered and fed in pulses to the lubricant nozzles. Drive components of the lubricant pump are connected to a servo or cylinder oil conducting pipe. This oil-conducting pipe can be formed single-walled or as a double wall pipe. Hereinafter, the embodiment with the double-wall pipe and the servo oil will be described. However, this description also applies largely, ie adapted accordingly, when the oil-conducting pipe is single-walled and instead of the servo oil the Cylinder oil, so the lubricant is used. The drive components comprise a pressure booster and a device with which the pumped lubricant is uniformly distributed to individual supply lines 12 and thus to the individual lubricant nozzles of an associated cylinder 8.

Das Servoöl ist ein hydraulisches Arbeitsmittel, das beispielsweise mit einem Druck von 50 bar in einem zentralen Rohr des Doppelwandrohrs gefördert wird. Mit dem Ringraum zwischen dem zentralen Rohr und einem Mantelrohr, der leer ist, kann das zentrale Rohr bezüglich Leckage überwacht werden.The servo oil is a hydraulic working fluid, which is conveyed, for example, with a pressure of 50 bar in a central tube of the double wall pipe. With the annulus between the central tube and a jacket tube that is empty, the central tube can be monitored for leakage.

Das Schmiermittel wird in die Schmiermitteldüse 7 mittels der Dosiereinheit und jeweils durch die separate Zuleitung 12 eingespeist. Die Zufuhr von Schmiermittel wird bei einem Arbeitsdruck durchgeführt, der auf den Betrieb der Hubkolbenbrennkraftmaschine angepasst ist. Die Zufuhr kann nach einem vorgebbaren Schema erfolgen; oder sie kann in Abhängigkeit von verschiedenen Betriebsparametern, wie z.B. der Drehzahl, der Last, der Zylindertemperatur, der Dicke des Schmierfilms im Zylinder 8 oder anderer Betriebsparametern eingestellt werden. Die Schmiermitteldüse 7 des beschriebenen Ausführungsbeispiels weist ein Ventil 72 auf, das ein in bekannter Weise federbelastetes Ventil 72 ist. Dabei ist das Ventil 72 so einstellbar, dass es unter Einwirkung des Arbeitsdrucks des in der Zuleitung 12 anstehenden Schmiermittels spontan öffnet, so dass das Schmiermittel aus der Zuleitung 12 in die Schmiermitteldüse 7 stossartig einströmt und durch die Austrittsöffnung 73 fächerartig auf die Kolbenlauffläche 80 austritt (oder bei einem anderen Düsentyp beispielsweise in Tropfenform abgegeben wird). Das Ventil 72 wirkt auch als Rückschlagventil, das gegen ein Rückströmen des Schmiermittels aufgrund eines zylinderseitigen Überdrucks schützt. Rückschlagventile können auch zwischen der Schmiermittelpumpe und den Zuleitungen 12 angeordnet sein, insbesondere bei Düsentypen, die nicht selbst die Funktion eines Rückschlagventils aufweisen.The lubricant is fed into the lubricant nozzle 7 by means of the metering unit and in each case by the separate supply line 12. The supply of lubricant is performed at a working pressure adapted to the operation of the reciprocating internal combustion engine. The supply can take place according to a predeterminable scheme; or it may be adjusted depending on various operating parameters such as speed, load, cylinder temperature, thickness of lubricating film in cylinder 8, or other operating parameters. The lubricant nozzle 7 of the described embodiment has a valve 72 which is a spring-loaded valve 72 in a known manner. In this case, the valve 72 is adjustable so that it spontaneously opens under the action of the working pressure of the lubricant 12 in the supply line, so that the lubricant flows from the supply line 12 into the lubricant nozzle 7 jerkily and exits through the outlet opening 73 fan-like manner on the piston tread 80 ( or in another type of nozzle, for example, in the form of drops). The valve 72 also acts as a check valve, which protects against backflow of the lubricant due to a cylinder-side overpressure. Check valves may also be arranged between the lubricant pump and the supply lines 12, in particular for nozzle types which do not themselves have the function of a check valve.

Neben den bereits genannten Betriebsparametern kann auch beispielsweise die Qualität des Schmiermittels und/oder die Qualität des Treibstoffs oder anderer Betriebsstoffe sowohl den Zeitpunkt, als auch die Menge des zugeführten Schmiermittels mitbestimmen. Die Betriebsparameter können von nicht gezeigten Sensoren eingelesen und über Datenleitungen der Ansteuereinrichtung, die frei programmierbar ist, zugeführt werden, so dass die Dosiereinrichtung entsprechend gesteuert oder geregelt wird.In addition to the operating parameters already mentioned, for example, the quality of the lubricant and / or the quality of the fuel or other fuels can also determine the time as well as the amount of lubricant supplied. The operating parameters can be read by sensors, not shown, and supplied via data lines of the drive device, which is freely programmable, so that the metering device is controlled or regulated accordingly.

Beim erfindungsgemässen Schmiersystem ist jedem Zylinder 8 ein Schmiermodul mit einer Schmiermittelpumpe (inklusive Verteilereinrichtung) zugeordnet. Dabei wird die Schmiermittelpumpe als ein mechanisch stabiler Grundkörper genutzt, durch den eine Integration von diversen Organen hergestellt werden kann. Dies wird anhand der Figuren 2 und 3 erläutert. Fig. 2 zeigt einen zerlegten Schmiermodul 1', dessen Komponenten zum Teil die genannten Organe sind. Diese Organe sind

  1. a) eine lokale Steuerungseinheit 3,
  2. b) ein zwischen Schmiermittelpumpe und Schmiermitteldüse 7 angeordneter Drucksensor 4 für die Überwachung der intermittierenden Förderung des Schmiermittels,
  3. c) ein steuerbares Ventil 5 für das Öl und
  4. d) optional weitere, nicht dargestellte Organe, wie beispielsweise ein Akkumulator.
In the lubrication system according to the invention, each cylinder 8 is assigned a lubrication module with a lubricant pump (including distributor device). The lubricant pump is used as a mechanically stable base body, through which an integration of various organs can be produced. This is based on the Figures 2 and 3 explained. Fig. 2 shows a disassembled lubricating module 1 ', whose components are part of the said organs. These organs are
  1. a) a local control unit 3,
  2. b) a pressure sensor 4 arranged between lubricant pump and lubricant nozzle 7 for monitoring the intermittent delivery of the lubricant,
  3. c) a controllable valve 5 for the oil and
  4. d) optionally further, not shown, such as an accumulator organs.

Fig. 3 zeigt den Schmiermodul 1 nach Zusammenbau der Komponenten oder Organe 3, 4, 5. Der Drucksensor 4 ist dabei in eine Ausnehmung 24 des Grundkörpers 2 eingefügt, das steuerbare Ventil 5 in eine Ausnehmung 25 (siehe Fig. 2). Die genannten Organe 3, 4, 5 haben verschiedene Funktionen, so dass durch deren Integration im Schmiermodul 1 und der Integration der T-förmigen Verzweigung für das Servoöl eine Funktionsvereinigung vorliegt. Durch diese Funktionsvereinigung gibt es Einsparungen bei den Kosten und beim Raumbedarf. Die Montage wird auch vereinfacht. Bei einem Defekt wird ein Schmiermodul 1 einfach durch einen intakten (neuen oder revidierten) Modul 1 ersetzt. Dies erlaubt eine Beschleunigung einer Reparatur, was wiederum Kosten reduziert. Fig. 3 shows the lubrication module 1 after assembly of the components or organs 3, 4, 5. The pressure sensor 4 is inserted into a recess 24 of the base body 2, the controllable valve 5 in a recess 25 (see Fig. 2 ). Said organs 3, 4, 5 have different functions, so that by their integration in the lubrication module 1 and the integration of the T-shaped branch for the servo oil present a functional combination. Through this functional association, there are savings in costs and space requirements. The assembly is also simplified. In case of a defect will a lubrication module 1 simply replaced by an intact (new or revised) module 1. This allows an acceleration of a repair, which in turn reduces costs.

Der Grundkörper 2, in dem die nicht dargestellte Schmiermittelpumpe enthalten ist, hat zwei Anschlussstellen 6a und 6b für das Servoöl. An diesen wird das zentrale Rohr 161 des Doppelwandrohrs 16 (mit Mantelrohr 162) an ein Rohrende 60 des Grundkörpers 2 beispielsweise mit einer Schraubverbindung angeschlossen. Flansche 163 an den Enden des Mantelrohrs 162 werden auf den Grundkörper 2 aufgeschraubt. Im Innern des Grundkörpers 2 ist ein Kanal 61 mit einer T-förmigen Verzweigung und einer Abzweigung 62 für das Servoöl integriert. Dieser Kanal 61 verbindet die Anschlussstellen 6a und 6b, während die Abzweigung 62 eine durch das Ventil 5 gesteuert verschliessbare Verbindung zu den Antriebskomponenten der Schmiermittelpumpe herstellt. Dank diesem Kanal 61 mit Abzweigung 62 wird kein T-Stück in der externen Servoöl-Leitung (dem "Rail") benötigt, wie es bei vorbekannten Schmiersystemen der Fall ist. Dank dieser Lösung verringert sich die Anzahl der erforderlichen Flanschverbindungen von vier auf zwei, was eine namhafte Kosteneinsparung bedeutet. Die Doppelpfeile 6 in Fig. 3 deuten an, dass das Servoöl in beiden Richtungen fliessen kann.The main body 2, in which the lubricant pump, not shown, is contained, has two connection points 6a and 6b for the servo oil. At this, the central tube 161 of the double-walled pipe 16 is connected (with jacket tube 162) to a pipe end 60 of the base body 2, for example with a screw connection. Flanges 163 at the ends of the jacket tube 162 are screwed onto the base body 2. In the interior of the main body 2, a channel 61 is integrated with a T-shaped branch and a branch 62 for the servo oil. This channel 61 connects the connection points 6a and 6b, while the branch 62 establishes a closable by the valve 5 lockable connection to the drive components of the lubricant pump. Thanks to this channel 61 with branch 62 no T-piece in the external servo oil line (the "rail") is required, as is the case with previously known lubrication systems. Thanks to this solution, the number of required flange connections is reduced from four to two, which means considerable cost savings. The double arrows 6 in Fig. 3 indicate that the servo oil can flow in both directions.

Jede lokale Steuerungseinheit 3 bildet einen intelligenten Knotenpunkt eines übergeordneten Steuerungssystems 100, das anhand der Fig. 4 erläutert wird. Fig. 4 zeigt ein Schaltungsschema des erfindungsgemässen Schmiersystems, bei dem nur ein Teil des Gesamtsystems dargestellt ist. Die Darstellung umfasst zwei von beispielsweise vier Zylindern 8. Die beiden Blöcke 70 symbolisieren die Schmierung der Zylinder 8.Each local control unit 3 forms an intelligent node of a higher-level control system 100, which is based on the Fig. 4 is explained. Fig. 4 shows a circuit diagram of the inventive lubrication system, in which only a part of the overall system is shown. The representation comprises two of, for example, four cylinders 8. The two blocks 70 symbolize the lubrication of the cylinders 8.

Das übergeordnete Steuerungssystems 100 umfasst mindestens eine globale Steuerung 10, Speisungsleitungen 102 für den Energiebedarf und mindestens einen Feldbus 101, insbesondere einen CAN-Bus. Die lokalen Steuerungseinheiten 3 der Module 1 sind an die Speisungsleitungen 102 (Verbindungen 21, 22) und an den Feldbus (Verbindungen 31, 32) angeschlossen. Mit dem übergeordneten Steuerungssystem 100 stellt der Feldbus eine Verbindung her, über die ein Datenaustausch zwischen den lokalen Steuerungseinheiten 3 und der globalen Steuerung 10 erfolgen kann. Mit Vorteil sind aus Gründen der Redundanz die Speisungsleitungen und der Feldbus doppelt ausgeführt. Ebenso sind zwei globale Steuerungen 10 vorgesehen. Der Feldbus verknüpft auch die einzelnen Steuerungseinheiten 3, zwischen denen auch ein Datenaustausch stattfinden kann. In Fig. 4 ist auch der "Rail" mit Doppelwandrohren 16 eingezeichnet. Mit einem zusätzlichen Kanal im Grundkörper 2 können die Ringräume der einzelnen Abschnitte der Doppelwandrohre 16 zu einem kommunizierenden Raum verbunden werden.The higher-level control system 100 comprises at least one global controller 10, energy supply supply lines 102 and at least one fieldbus 101, in particular a CAN bus. The local Control units 3 of the modules 1 are connected to the supply lines 102 (connections 21, 22) and to the fieldbus (connections 31, 32). With the higher-level control system 100, the fieldbus establishes a connection via which data can be exchanged between the local control units 3 and the global controller 10. For reasons of redundancy, the supply lines and the field bus are advantageously designed in duplicate. Likewise, two global controllers 10 are provided. The fieldbus also links the individual control units 3, between which a data exchange can take place. In Fig. 4 is also the "rail" with double wall pipes 16 located. With an additional channel in the base body 2, the annular spaces of the individual sections of the double wall pipes 16 can be connected to a communicating space.

Wie in Fig. 3 zu sehen, ist der Drucksensor 4 mit dem lokalen Steuerungssystem 3 durch eine signalübertragende Leitung 43 verbunden. Das steuerbare Ventil 5 für das Servoöl ist ebenfalls mit dem lokalen Steuerungssystem 3 durch eine signalübertragende Leitung 35 verbunden.As in Fig. 3 can be seen, the pressure sensor 4 is connected to the local control system 3 by a signal transmitting line 43. The controllable valve 5 for the servo oil is also connected to the local control system 3 through a signal transmitting line 35.

Die Steuerung 10 des übergeordneten Steuerungssystems 100 ist frei programmierbar, so dass die Schmiermittelpumpe derart steuer- oder regelbar ist, dass die Menge und/oder der Zeitpunkt des geförderten Schmiermittels in Abhängigkeit von den bereits genannten Betriebsparametern einstellbar ist.The controller 10 of the higher-level control system 100 is freely programmable, so that the lubricant pump can be controlled or regulated in such a way that the quantity and / or the time of the delivered lubricant can be set as a function of the already mentioned operating parameters.

Mit dem Drucksensor 4 wird die intermittierende Förderung des Schmiermittels hinsichtlich Zeitpunkt der Abgabe und erzeugtem Druckstoss überwacht. In Bezug auf Sollwerte, die vorgegeben sind oder die von weiteren Parameteren abhängen können, wird das übergeordnete Steuerungssystem geregelt. Mit dem Drucksensor 4 gemessenen Grössen werden zumindest teilweise über die lokale Steuerungseinheit als Daten 310 an das übergeordnete Steuerungssystem 100 zur Überwachung weiter geleitet, so dass gegebenenfalls erforderliche Abhilfemassnahmen aktiviert und/oder ein Alarm ausgelöst werden kann. In der Gegenrichtung empfangen die lokalen Steuerungssysteme 3 Daten 103 von der übergeordneten Steuerung 10.With the pressure sensor 4, the intermittent delivery of the lubricant is monitored in terms of timing of delivery and generated pressure surge. With respect to setpoints which are predetermined or which may depend on other parameters, the higher-level control system is regulated. Sizes measured with the pressure sensor 4 are at least partially forwarded via the local control unit as data 310 to the higher-level control system 100 for monitoring purposes that any necessary corrective measures can be activated and / or an alarm can be triggered. In the opposite direction, the local control systems 3 receive data 103 from the higher-level controller 10.

Claims (9)

  1. Cylinder lubricating system for a plurality of cylinders (8) in a reciprocating piston combustion engine, in particular a two-stroke large diesel engine with longitudinal scavenging, for the application of lubricant in the cylinders onto piston running surfaces (80) using in each case a plurality of lubricant nozzles (7), wherein lubricant is metered with intermittently pumping lubricant pumps and can be supplied pulse-wise to the lubricant nozzles, and wherein drive components of the lubricant pumps are connected to an oil-conducting tube, namely a tube conducting servo oil or cylinder oil, in particular to a double wall tube (16),
    characterized in that
    a lubricating module (1) with a lubricant pump is associated with each cylinder, in that the lubricant pump forms a mechanically stable base body (2) by which an integration of diverse devices (3, 4, 5) is established, in that these devices are a) a local control unit (3), b) a pressure sensor (4) disposed between lubricant pump and lubricant nozzle for the monitoring of the intermittent pumping of the lubricant, c) a controllable valve (5) for the oil, and d) optionally further devices, such as for example an accumulator, wherein two connection points (6a, 6b) for the oil-conducting tube are provided at the base body and also a passage (61) with a T-shaped branch (62) for the oil is integrated into the base body and this passage connects the connection points, whereas the branch establishes a connection, which can be controllably closed by the valve, to the drive components of the lubricant pump.
  2. Lubricating system in accordance with claim 1, characterized in that each local control unit (3) forms an intelligent node point of a governing control system (100).
  3. Lubricating system in accordance with claim 2, characterized in that the governing control system (100) includes feed lines (102) and at least one field bus (101), in particular a CAN bus, and in that the local control units (3) are connected to the feed lines and also to the field bus in order to establish a data exchange (103, 310) with the governing control system, wherein the feed lines and the field bus are executed in duplicate with advantage for reasons of redundancy.
  4. Lubricating system in accordance with claim 2 or claim 3, characterized in that the pressure sensor (4) is connected to the local control system (3) by a signal transmitting line (43).
  5. Lubricating system in accordance with one of the claims 2 to 4, characterized in that the controllable valve (5) for the servo oil is connected to the local control system (3) by a signal transmitting line (35).
  6. Lubricating system in accordance with one of the claims 2 to 4, characterized in that the governing control system (100) is freely programmable so that the lubricant pump can be controlled or regulated such that the quantity and/or the point in time of the pumped lubricant can be set in dependence on various operating parameters, such as for example on the speed of rotation, the load, the cylinder temperature, the thickness of the lubricant film in the cylinder (8) or other operating parameters, or also in dependence on the quality of a fuel, of the lubricant (8) or of other operating materials.
  7. Reciprocating piston combustion engine, in particular a two-stroke large diesel engine with longitudinal scavenging, having a cylinder lubricating system in accordance with one of the claims 1 to 6.
  8. Method for the lubrication of a piston running surface (80) using a cylinder lubricating system in accordance with one of the claims 1 to 6, characterized in that the intermediate pumping of the lubricant is monitored with respect to the point in time of the dispensing and the pressure impulse generated using the pressure sensor (4), and in that regulation is effected by the governing control system (100) with respect to desired values which are preset or which can depend on further parameters.
  9. Method in accordance with claim 8, characterized in that parameters measured with the pressure sensor (4) are partly further conducted as data (310) to the governing control system (100) so that, if necessary, a required auxiliary measure can be activated and/or an alarm can be triggered.
EP06120296A 2005-09-23 2006-09-07 Cylinder lubricating device for an engine Not-in-force EP1767751B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL06120296T PL1767751T3 (en) 2005-09-23 2006-09-07 Cylinder lubricating device for an engine
EP06120296A EP1767751B1 (en) 2005-09-23 2006-09-07 Cylinder lubricating device for an engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05405555 2005-09-23
EP06120296A EP1767751B1 (en) 2005-09-23 2006-09-07 Cylinder lubricating device for an engine

Publications (2)

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EP1767751A1 EP1767751A1 (en) 2007-03-28
EP1767751B1 true EP1767751B1 (en) 2008-07-30

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EP06120296A Not-in-force EP1767751B1 (en) 2005-09-23 2006-09-07 Cylinder lubricating device for an engine

Country Status (8)

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EP (1) EP1767751B1 (en)
JP (1) JP4820254B2 (en)
KR (1) KR101256399B1 (en)
CN (1) CN1944966B (en)
AT (1) ATE403070T1 (en)
DE (1) DE502006001227D1 (en)
DK (1) DK1767751T3 (en)
PL (1) PL1767751T3 (en)

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KR101027536B1 (en) * 2009-10-14 2011-04-07 경상대학교산학협력단 The electronically controlled lubricator integrated with an accumulating distributor in a large two-stroke diesel engine
DK178033B1 (en) * 2010-06-04 2015-03-30 Hans Jensen Lubricators As Hydraulic system, preferably a central lubrication system for cylinder lubrication
EP2395208A1 (en) 2010-06-11 2011-12-14 Wärtsilä Schweiz AG Large motor with a cylinder lubrication device and method for lubricating a cylinder of a large motor
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WO2015144182A1 (en) 2014-03-25 2015-10-01 Hans Jensen Lubricators A/S Method and system for dosing lubrication oil into cylinders
US9556764B2 (en) * 2014-05-13 2017-01-31 GM Global Technology Operations LLC Individual piston squirter switching with crankangle resolved control
DK179484B1 (en) 2017-05-26 2018-12-17 Hans Jensen Lubricators A/S Method for lubricating large two-stroke engines using controlled cavitation in the injector nozzle
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KR20070034436A (en) 2007-03-28
ATE403070T1 (en) 2008-08-15
CN1944966A (en) 2007-04-11
JP4820254B2 (en) 2011-11-24
PL1767751T3 (en) 2009-01-30
JP2007085349A (en) 2007-04-05
DK1767751T3 (en) 2008-11-17
KR101256399B1 (en) 2013-04-25
CN1944966B (en) 2011-02-09
EP1767751A1 (en) 2007-03-28
DE502006001227D1 (en) 2008-09-11

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