EP1070836A2 - Device for cooling and / or lubricating an internal combustion piston engine - Google Patents

Device for cooling and / or lubricating an internal combustion piston engine Download PDF

Info

Publication number
EP1070836A2
EP1070836A2 EP00112449A EP00112449A EP1070836A2 EP 1070836 A2 EP1070836 A2 EP 1070836A2 EP 00112449 A EP00112449 A EP 00112449A EP 00112449 A EP00112449 A EP 00112449A EP 1070836 A2 EP1070836 A2 EP 1070836A2
Authority
EP
European Patent Office
Prior art keywords
piston
oil
valve
outlet opening
engine
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.)
Withdrawn
Application number
EP00112449A
Other languages
German (de)
French (fr)
Other versions
EP1070836A3 (en
Inventor
Rüdiger Pfaff
Harald Pfeffinger
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1070836A2 publication Critical patent/EP1070836A2/en
Publication of EP1070836A3 publication Critical patent/EP1070836A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F01M1/16—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
    • F01M1/08—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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets

Definitions

  • the invention relates to a device for cooling the pistons of an internal combustion engine by means of a pump, which supplies oil to the piston from the lubricating oil circuit by means of a pump via an inlet line having an outlet opening, the oil inlet being regulated via a valve controlled as a function of engine parameters and the oil at least is sprayed against the underside of the piston.
  • a device of the type mentioned at the outset is already known (DE 42 43 571 C2), in which the piston cooling is inserted directly into the crankcase in the area of the bearing seats and is connected to a lubricant supply, so that oil is discharged from the piston underside via oil spray nozzles can.
  • the oil spray nozzles are designed in connection with the upstream pressure valves so that the oil spray nozzles are switched off from the lubrication supply when the machine is idling.
  • the oil spray nozzles are also inserted into the recesses provided in the bearing bracket. This should save additional lubricating oil channels for the other oil spray valves.
  • the object of the invention is to design and arrange a device for cooling the pistons of an internal combustion engine with a lubricating oil circuit so that the internal combustion engine is cooled only with certain parameters.
  • the lubricating oil circuit includes at least one main supply line to which a plurality of supply lines, each with an outlet opening, are connected, only one valve being provided in the main supply line.
  • valve as a pressure-independent, switchable valve designed and in the area of a End of the main supply line is provided.
  • valve as an electromagnetic Valve designed and engine parameters such as oil temperature, Water temperature or oil pressure, is controllable. Since that Valve is designed as an electromagnetic valve, leave it easily about the engine parameters, such as Switch oil temperature, water temperature or oil pressure, see above that it opens very specifically at the desired operating state and ensures the coolant supply to the piston.
  • valve with sensors of the engine and / or with the engine control unit is effectively linked in which the individual engine parameters are filed.
  • the supply line with their outlet opening designed as oil splashes at a distance arranged to at least one inlet opening provided in the piston and is in flow connection.
  • the feed line with its outlet opening concentric to the inlet opening provided in the piston is arranged. Due to the advantageous placement the outlet of the oil syringe in the area of the piston Optimal coolant supply in any position of the piston of the piston, as it also lasts for a long time Distance between the outlet opening of the feed lines and the inlet opening in the piston ensures transport to the piston is so that the coolant is targeted into the inlet opening enter the piston and at another point in the piston can exit again.
  • the feed line with its outlet opening in a certain position of the piston in the Intake opening of the piston protrudes. This ensures that no damage in any position of the piston the supply line can enter because even in the lowest Position of the piston (UT) the outlet opening or the outlet end the oil supply line into the opening of the piston can enter.
  • one or more oil channels in the piston are provided, at least one of which with the outlet opening the supply line of the oil circuit in flow connection stands, at least partially in an engine block or cylinder housing.
  • a device for cooling or for Lubrication of a reciprocating internal combustion engine with a cross section cylinder 2 shown and a crankcase 12 illustrated to which a combustion chamber 1 is assigned.
  • a piston 18 is above a piston pin 16 by means of a Connecting rod 15 mounted in the crankcase 12.
  • the piston 18 has a piston crown 20 and a piston skirt 21 and in upper area numerous ring grooves 22 for receiving piston rings 23 on.
  • the piston 18 is supported by the piston crown 20 and an upper piston surface or piston bowl 24 and a piston skirt 25 limited.
  • Oil channel 19 there is a circumferential one in the area of the piston outer surface 25 Oil channel 19, the one with an inlet opening 6, 6 'and on the other hand, be connected to an outlet opening 7, 7 ' can.
  • the oil channel 19 is in dashed lines indicated.
  • the oil channel 19 belongs to an oil circuit, which also includes an in belongs to an engine block 10 provided feed line 4.
  • the feed line 4 is connected to a main supply line 27.
  • the main supply line 27 also serves to supply pressure medium further not shown in the drawing Feed lines for further cylinders of the internal combustion engine and is supplied by a pump 11.
  • the feed line or the feed channel 4 each with the corresponding crankcase 12 in connection.
  • the feed line 4 points in the area an oil spray nozzle 26 at its outlet opening 5 arranged at a sufficient distance from the piston crown 20 is, so that when the piston 18 is in the UT position no damage to the feed line 4 can occur.
  • the supply line 4 or the oil spray nozzle 26 concentric to that provided in the piston 18 Inlet opening 6 of the oil channel 19 arranged so that in the position UT of the piston 18 part of the oil spray nozzle 26 or the associated supply line 4 into which the inlet opening 6, 6 'subsequent drilling can occur briefly.
  • the pump 11 switchable valve 17 which is designed as an electromagnetic valve and engine parameters, such as oil temperature, Water temperature or oil pressure can be controlled can.
  • engine parameters such as oil temperature, Water temperature or oil pressure can be controlled can.
  • a coolant supply when cold starting or when Overrun can have a negative impact on running behavior, noise, Emissions and fuel consumption of the internal combustion engine.
  • targeted cooling and / or clocked cooling becomes a major improvement in the engine's metrics or the overall efficiency.
  • the switchable valve 17 is not shown in the drawing Sensors of the engine and / or one in the drawing also not shown engine control unit in terms of effectiveness connected in which the individual motor parameters are stored. With this arrangement it is also possible to have valves inside the area of the oil syringe. Besides, it's after another embodiment possible instead of a separate one Oil channel or a separate feed line 4 the flow of each individual oil spray nozzle 26 depending on the operating parameters controlled by a separate valve.
  • the device for cooling and / or Lubrication of the piston 18 or the reciprocating piston internal combustion engine can the lubrication or cooling only after the cold start of the Motors are used, so that rapid combustion chamber heating can take place, which is delayed by early cooling would.
  • To counteract cooling of the combustion chamber it is advantageous, especially in the partial load range or overrun to avoid or reduce cooling channel loading.
  • FIG. 2 there are a plurality of supply lines to the main supply line 27 or feed channels 4 connected with oil spray nozzles 26, have the outlet openings 5 through which the Cooling oil is supplied to the piston 18.
  • An engine control unit 28 2, 3 can be operatively connected to the valve 17 be, the valve 17 between the pump 11 and the first Feed channel 4 or the oil spray nozzle 26 (Fig. 3) or between an oil pan 30 of the crankcase 12 and an oil spray nozzle 26 or a feed channel 4 is provided (Fig. 3).

Abstract

The cooling device cools the pistons (16) by means of a pump (11) taking oil from the lubrication circuit via a branch line (4) with an exit aperture (5) to the piston. The oil supply is regulated by a valve in the main supply line (27) controlled dependent on the engine parameters. Oil is sprayed at least against the underside of the piston.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Kühlung der Kolben einer Brennkraftmaschine mittels einer Pumpe, die Öl aus dem Schmierölkreis mittels einer Pumpe über eine Austrittsöffnung aufweisende Zuführleitung dem Kolben zuführt, wobei die Ölzufuhr über ein in Abhängigkeit von Motorparametern gesteuertes Ventil geregelt und das Öl zumindest gegen die Unterseite des Kolbens gespritzt wird. The invention relates to a device for cooling the pistons of an internal combustion engine by means of a pump, which supplies oil to the piston from the lubricating oil circuit by means of a pump via an inlet line having an outlet opening, the oil inlet being regulated via a valve controlled as a function of engine parameters and the oil at least is sprayed against the underside of the piston.

Es ist bereits eine Vorrichtung der eingangs aufgeführten Art bekannt (DE 42 43 571 C2), bei der die Kolbenkühlung unmittelbar in das Kurbelgehäuse im Bereich der Lagerstühle eingesetzt ist und mit einer Schmiermittelversorgung in Verbindung steht, so daß auf der Kolbenunterseite Öl über Ölspritzdüsen ausgetragen werden kann. Die Ölspritzdüsen sind in Verbindung mit den vorgeschalteten Druckventilen so ausgelegt, daß im Leerlaufbetrieb der Maschine die Ölspritzdüsen von der Schmierversorgung abgeschaltet sind. Ferner sind die Ölspritzdüsen in die im Lagerstuhl vorgesehenen Ausnehmungen eingesetzt. Hierdurch sollen zusätzliche Schmierölkanäle für die übrigen Ölspritzventile eingespart werden. A device of the type mentioned at the outset is already known (DE 42 43 571 C2), in which the piston cooling is inserted directly into the crankcase in the area of the bearing seats and is connected to a lubricant supply, so that oil is discharged from the piston underside via oil spray nozzles can. The oil spray nozzles are designed in connection with the upstream pressure valves so that the oil spray nozzles are switched off from the lubrication supply when the machine is idling. The oil spray nozzles are also inserted into the recesses provided in the bearing bracket. This should save additional lubricating oil channels for the other oil spray valves.

Demgemäß besteht die Erfindungsaufgabe darin, eine Vorrichtung zur Kühlung der Kolben einer Brennkraftmaschine mit einem Schmierölkreis so auszubilden und anzuordnen, daß nur bei bestimmten Parametern eine Kühlung der Brennkraftmaschine erfolgt. Accordingly, the object of the invention is to design and arrange a device for cooling the pistons of an internal combustion engine with a lubricating oil circuit so that the internal combustion engine is cooled only with certain parameters.

Gelöst wird die Aufgabe erfindungsgemäß dadurch, daß zum Schmierölkreis zumindest eine Hauptversorgungsleitung gehört, an die mehrere Zuführleitungen mit je einer Austrittsöffnung angeschlossen sind, wobei nur ein Ventil in der Hauptversorgungsleitung vorgesehen ist. Hierdurch wird auf einfache, bauliche Weise erreicht, daß die Kolbenkühlung der Brennkraftmaschine nur dann erfolgt, wenn bestimmte Temperaturwerte in der Verbrennungskraftmaschine erreicht werden, so daß insbesondere bei Kaltstartbetrieb eine Kolbenkühlung unterbleibt, da diese in diesem Betriebszustand nicht erforderlich ist. Eine Kolbenkühlung wirkt sich insbesondere beim Kaltstart sowie im Teillastbereich negativ auf Emissionen, Geräuschverhalten und Brenastoffverhalten aus. Durch die erfindungsgemäße Vorrichtung und für das gezielte Zuschalten der Kolbenkühlung wird eine deutliche Verbesserung geschaffen.The object is achieved according to the invention in that the lubricating oil circuit includes at least one main supply line to which a plurality of supply lines, each with an outlet opening, are connected, only one valve being provided in the main supply line. In this way it is achieved in a simple, structural manner that the piston cooling of the internal combustion engine takes place only when certain temperature values are reached in the internal combustion engine, so that piston cooling is omitted, in particular during cold start operation, since this is not necessary in this operating state. Piston cooling has a negative effect on emissions, noise behavior and fuel consumption, particularly during cold starts and in the partial load range. A significant improvement is created by the device according to the invention and for the targeted activation of the piston cooling.

Ferner ist es vorteilhaft, daß das Ventil als druckunabhängiges, schaltbares Ventil ausgebildet und im Bereich eines Endes der Hauptversorgungsleitung vorgesehen ist.It is also advantageous that the valve as a pressure-independent, switchable valve designed and in the area of a End of the main supply line is provided.

Eine zusätzliche Möglichkeit ist gemäß einer Weiterbildung der erfindungsgemäßen Vorrichtung, daß das Ventil als elektromagnetisches Ventil ausgebildet und von Motorparametern, wie Öltemperatur, Wassertemperatur oder Öldruck, steuerbar ist. Da das Ventil als elektromagnetisches Ventil ausgebildet ist, laßt es sich ohne weiteres über die Motorparameter, wie beispielsweise Öltemperatur, Wassertemperatur oder auch Öldruck, schalten, so daß es ganz gezielt bei dem gewünschten Betriebszustand öffnet und die Kühlmittelversorgung des Kolbens sicherstellt. According to a further development, an additional possibility is the Device according to the invention that the valve as an electromagnetic Valve designed and engine parameters such as oil temperature, Water temperature or oil pressure, is controllable. Since that Valve is designed as an electromagnetic valve, leave it easily about the engine parameters, such as Switch oil temperature, water temperature or oil pressure, see above that it opens very specifically at the desired operating state and ensures the coolant supply to the piston.

In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, daß das Ventil mit Sensoren des Motors und/oder mit dem Motorsteuergerät wirkungsmäßig verbunden ist, in dem die einzelnen Motorparameter abgelegt sind.In a further embodiment of the invention, it is advantageous that the valve with sensors of the engine and / or with the engine control unit is effectively linked in which the individual engine parameters are filed.

Gemäß einer bevorzugten Ausführungsform der erfindungsgemäßen Lösung ist schließlich vorgesehen, daß die Zuführleitung mit ihrer als Ölspritzen ausgebildeten Austrittsöffnung mit Abstand zu mindestens einer im Kolben vorgesehenen Einlaßöffnung angeordnet ist und in Durchflußverbindung steht.According to a preferred embodiment of the invention Solution is finally provided that the supply line with their outlet opening designed as oil splashes at a distance arranged to at least one inlet opening provided in the piston and is in flow connection.

Ferner ist es vorteilhaft, daß die Zuführleitung mit ihrer Austrittsöffnung konzentrisch zu der im Kolben vorgesehenen Einlaßöffnung angeordnet ist. Durch die vorteilhafte Plazierung der Austrittsöffnung der Ölspritze im Bereich des Kolbens wird in jeder beliebigen Stellung des Kolbens eine optimale Kühlmittelversorgung des Kolbens gewährleistet, da auch über eine lange Wegstrecke zwischen der Austrittsöffnung der Zuführleitungen und der Einlaßöffnung im Kolben ein Transport zum Kolben sichergestellt wird, so daß das Kühlmittel gezielt in die Einlaßöffnung im Kolben eintreten und an einer anderen Stelle im Kolben wieder austreten kann.It is also advantageous that the feed line with its outlet opening concentric to the inlet opening provided in the piston is arranged. Due to the advantageous placement the outlet of the oil syringe in the area of the piston Optimal coolant supply in any position of the piston of the piston, as it also lasts for a long time Distance between the outlet opening of the feed lines and the inlet opening in the piston ensures transport to the piston is so that the coolant is targeted into the inlet opening enter the piston and at another point in the piston can exit again.

Im Zusammenhang mit der erfindungsgemäßen Ausbildung und Anordnung ist es von Vorteil, daß die Zuführleitung mit ihrer Austrittsöffnung in einer bestimmten Stellung des Kolbens in die Einlaßöffnung des Kolbens hineinragt. Hierdurch wird erreicht, daß in jeder beliebigen Stellung des Kolbens keine Beschädigung der Zuführleitung eintreten kann, da selbst in der untersten Stellung des Kolbens (UT) die Austrittsöffnung bzw. das Auslaßende der Zuführleitung der Ölmittelversorgung in die Öffnung des Kolbens eintreten kann. In connection with the training and arrangement according to the invention it is advantageous that the feed line with its outlet opening in a certain position of the piston in the Intake opening of the piston protrudes. This ensures that no damage in any position of the piston the supply line can enter because even in the lowest Position of the piston (UT) the outlet opening or the outlet end the oil supply line into the opening of the piston can enter.

Vorteilhaft ist es ferner, daß im Kolben ein oder mehrere Ölkanäle vorgesehen sind, wobei zumindest einer davon mit der Austrittsöffnung der Zuführleitung des Ölkreislaufs in Durchflußverbindung steht, die zumindest teilweise in einem Motorblock bzw. Zylindergehäuse verläuft.It is also advantageous that one or more oil channels in the piston are provided, at least one of which with the outlet opening the supply line of the oil circuit in flow connection stands, at least partially in an engine block or cylinder housing.

Weitere Vorteile und Einzelheiten der Erfindung sind in den Patentansprüchen und in der Beschreibung erläutert und in den Figuren dargestellt. Es zeigt:

  • Fig. 1 eine Brennkraftmaschine mit einer Kühlmittelversorgung für einen Kolben,
  • Fig. 2 einen Ölkühlkreislauf zur Kühlmittelversorgung des Kolbens,
  • Fig. 3 ein weiteres Ausführungsbeispiel einer Kühlmittelversorgung für einen Kolben.
    • Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures. It shows:
  • 1 shows an internal combustion engine with a coolant supply for a piston,
  • 2 shows an oil cooling circuit for supplying coolant to the piston,
  • Fig. 3 shows another embodiment of a coolant supply for a piston.

    • In der Zeichnung ist eine Vorrichtung zur Kühlung oder auch zur Schmierung einer Hubkolbenbrennkraftmaschine mit einem im Querschnitt dargestellten Zylinder 2 und einem Kurbelgehäuse 12 veranschaulicht, dem ein Brennraum 1 zugeordnet ist.In the drawing, a device for cooling or for Lubrication of a reciprocating internal combustion engine with a cross section cylinder 2 shown and a crankcase 12 illustrated to which a combustion chamber 1 is assigned.

    Ein Kolben 18 ist über einem Kolbenbolzen 16 mittels einer Pleuelstange 15 im Kurbelgehäuse 12 gelagert. Der Kolben 18 weist einen Kolbenboden 20 und einen Kolbenschaft 21 sowie im oberen Bereich zahlreiche Ringnuten 22 zur Aufnahme von Kolbenringen 23 auf.A piston 18 is above a piston pin 16 by means of a Connecting rod 15 mounted in the crankcase 12. The piston 18 has a piston crown 20 and a piston skirt 21 and in upper area numerous ring grooves 22 for receiving piston rings 23 on.

    Der Kolben 18 wird von dem Kolbenboden 20 und einer oberen Kolbenoberfläche bzw. Kolbenmulde 24 sowie einer Kolbenmantelfläche 25 begrenzt. The piston 18 is supported by the piston crown 20 and an upper piston surface or piston bowl 24 and a piston skirt 25 limited.

    Im Bereich der Kolbenmantelfläche 25 befindet sich ein umlaufender Ölkanal 19, der einmal mit einer Einlaßöffnung 6, 6' und andererseits mit einer Austrittsöffnung 7, 7' verbunden sein kann. In der Zeichnung ist der Ölkanal 19 in gestrichelten Linien angedeutet.There is a circumferential one in the area of the piston outer surface 25 Oil channel 19, the one with an inlet opening 6, 6 'and on the other hand, be connected to an outlet opening 7, 7 ' can. In the drawing, the oil channel 19 is in dashed lines indicated.

    Der Ölkanal 19 gehört zu einen Ölkreislauf, zu dem auch eine in einem Motorblock 10 vorgesehene Zuführleitung 4 gehört. Die Zuführleitung 4 ist an eine Hauptversorgungsleitung 27 angeschlossen. Die Hauptversorgungsleitung 27 dient auch zur Druckmittelversorgung weiterer in der Zeichnung nicht dargestellter Zuführleitungen für weitere Zylinder der Brennkraftmaschine und wird über eine Pumpe 11 versorgt.The oil channel 19 belongs to an oil circuit, which also includes an in belongs to an engine block 10 provided feed line 4. The feed line 4 is connected to a main supply line 27. The main supply line 27 also serves to supply pressure medium further not shown in the drawing Feed lines for further cylinders of the internal combustion engine and is supplied by a pump 11.

    Wie aus der Zeichnung hervorgeht, steht die Zuführleitung bzw. der Zuführkanal 4 jeweils mit dem entsprechenden Kurbelgehäuse 12 in Verbindung. Hierzu weist die Zuführleitung 4 im Bereich ihrer Austrittsöffnung 5 eine Ölspritzdüse 26 auf, die mit einem ausreichenden Abstand zum Kolbenboden 20 angeordnet ist, so daß bei der Stellung des Kolbens 18 in der Position UT keine Beschädigung der Zuführleitung 4 eintreten kann. Hierzu ist in vorteilhafter Weise die Zuführleitung 4 bzw. die Ölspritzdüse 26 konzentrisch zu der im Kolben 18 vorgesehenen Einlaßöffnung 6 des Ölkanals 19 angeordnet, so daß in der Stellung UT des Kolbens 18 ein Teil der Ölspritzdüse 26 bzw. die zugehörige Zuführleitung 4 in die sich an die Einlaßöffnung 6, 6' anschließende Bohrung kurzfristig eintreten kann.As can be seen from the drawing, the feed line or the feed channel 4 each with the corresponding crankcase 12 in connection. For this purpose, the feed line 4 points in the area an oil spray nozzle 26 at its outlet opening 5 arranged at a sufficient distance from the piston crown 20 is, so that when the piston 18 is in the UT position no damage to the feed line 4 can occur. For this is advantageously the supply line 4 or the oil spray nozzle 26 concentric to that provided in the piston 18 Inlet opening 6 of the oil channel 19 arranged so that in the position UT of the piston 18 part of the oil spray nozzle 26 or the associated supply line 4 into which the inlet opening 6, 6 'subsequent drilling can occur briefly.

    In der Stellung UT des Kolbens 18 weist jedoch die Ölspritzdüse 26 eine freie Wegstrecke L auf, so daß das aus der Ölspritzdüse 26 austretende Öl über diese Wegstrecke L in die Einlaßöffnung 6 gelangt. Je nach Ausgestaltung der Ölspritzdüse 26 kann auch ein Teil des Kühlmittels an die Kolbenwände bzw. den Kolbenboden 20 aufgespritzt werden und somit auch eine Kühlung des Kolbens 18 von außen gewährleisten. Durch diese Anordnung wird auf jeden Fall sichergestellt, daß in jeder beliebigen Stellung des Kolbens 18 eine Ölversorgung des Ölkanals 19 sichergestellt ist. Ferner kann der Kolben auch ohne Ölkanal ausgestattet sein.In the position UT of the piston 18, however, the oil spray nozzle 26 on a free path L, so that from the oil spray nozzle 26 escaping oil over this distance L into the inlet opening 6 arrives. Depending on the design of the oil spray nozzle 26 can also a part of the coolant to the piston walls or Piston plate 20 are sprayed on and thus also cooling ensure the piston 18 from the outside. By this arrangement will definitely ensure that in any Position of the piston 18 ensures an oil supply to the oil channel 19 is. The piston can also be equipped without an oil channel his.

    In vorteilhafter Weise befindet sich hinter der Pumpe 11 ein schaltbares Ventil 17, das als elektromagnetisches Ventil ausgebildet ist und von Motorparametern, wie beispielsweise Öltemperatur, Wassertemperatur oder auch Öldruck, gesteuert werden kann. Auf diese Weise ist es möglich, gezielt die Kühlkanäle bzw. Ölkanäle 19 mit dem gewünschten Kühlmittel bzw. dem Motoröl zu beaufschlagen, wenn ein bestimmter Betriebszustand erreicht ist. Eine Kühlmittelversorgung beim Kaltstart bzw. beim Schubbetrieb kann sich negativ auf Laufverhalten, Geräusche, Emissionen und Kraftstoffverbrauch des Verbrennungsmotors auswirken. Durch die gezielte Kühlung und/oder auch getaktete Kühlung wird eine wesentliche Verbesserung der Kennzahlen des Motors bzw. des Gesamtwirkungsgrads erreicht.It is advantageously located behind the pump 11 switchable valve 17, which is designed as an electromagnetic valve and engine parameters, such as oil temperature, Water temperature or oil pressure can be controlled can. In this way it is possible to target the cooling channels or oil channels 19 with the desired coolant or engine oil to be applied when a certain operating state is reached is. A coolant supply when cold starting or when Overrun can have a negative impact on running behavior, noise, Emissions and fuel consumption of the internal combustion engine. Through targeted cooling and / or clocked cooling becomes a major improvement in the engine's metrics or the overall efficiency.

    Das schaltbare Ventil 17 ist mit in der Zeichnung nicht dargestellten Sensoren des Motors und/oder eines in der Zeichnung ebenfalls nicht dargestellten Motorsteuergeräts wirkungsmäßig verbunden, in dem die einzelnen Motorparameter abgelegt sind. Mit dieser Anordnung ist es ferner möglich, Ventile innerhalb des Bereichs der Ölspritze einzusparen. Außerdem ist es nach einer anderen Ausführungsform möglich, anstelle eines separaten Ölkanals bzw. einer separaten Zuführleitung 4 den Durchfluß jeder einzelnen Ölspritzdüse 26 in Abhängigkeit der Betriebsparameter durch jeweils ein gesondertes Ventil zu steuern.The switchable valve 17 is not shown in the drawing Sensors of the engine and / or one in the drawing also not shown engine control unit in terms of effectiveness connected in which the individual motor parameters are stored. With this arrangement it is also possible to have valves inside the area of the oil syringe. Besides, it's after another embodiment possible instead of a separate one Oil channel or a separate feed line 4 the flow of each individual oil spray nozzle 26 depending on the operating parameters controlled by a separate valve.

    Mit der erfindungsgemäßen Vorrichtung zur Kühlung und/oder Schmierung des Kolbens 18 bzw. der Hubkolbenbrennkraftmaschine kann die Schmierung bzw. Kühlung erst nach dem Kaltstart des Motors eingesetzt werden, so daß auch eine schnelle Brennraumerwärmung erfolgen kann, die durch eine zu frühe Kühlung verzögert würde. Um einer Abkühlung des Brennraums entgegenzuwirken, ist es vorteilhaft, insbesondere im Teillastbereich oder Schubbetrieb eine Kühlkanalbeaufschlagung zu vermeiden bzw. zu reduzieren.With the device for cooling and / or Lubrication of the piston 18 or the reciprocating piston internal combustion engine can the lubrication or cooling only after the cold start of the Motors are used, so that rapid combustion chamber heating can take place, which is delayed by early cooling would. To counteract cooling of the combustion chamber, it is advantageous, especially in the partial load range or overrun to avoid or reduce cooling channel loading.

    In Fig. 2 sind an die Hauptversorgungsleitung 27 mehrere Zuführleitungen bzw. Zuführkanäle 4 mit Ölspritzdüsen 26 angeschlossen, die Austrittsöffnungen 5 aufweisen, über die das Kühlöl dem Kolben 18 zugeführt wird. Ein Motorsteuergerät 28 kann gemäß Fig. 2, 3 mit dem Ventil 17 wirkungsmäßig verbunden sein, wobei das Ventil 17 zwischen der Pumpe 11 und dem ersten Zuführkanal 4 oder der Ölspritzdüse 26 (Fig. 3) oder zwischen einer Ölwanne 30 des Kurbelgehäuses 12 und einer Ölspritzdüse 26 bzw. einem Zuführkanal 4 vorgesehen ist (Fig. 3).In FIG. 2 there are a plurality of supply lines to the main supply line 27 or feed channels 4 connected with oil spray nozzles 26, have the outlet openings 5 through which the Cooling oil is supplied to the piston 18. An engine control unit 28 2, 3 can be operatively connected to the valve 17 be, the valve 17 between the pump 11 and the first Feed channel 4 or the oil spray nozzle 26 (Fig. 3) or between an oil pan 30 of the crankcase 12 and an oil spray nozzle 26 or a feed channel 4 is provided (Fig. 3).

    Claims (8)

    Vorrichtung zur Kühlung der Kolben (18) einer Brennkraftmaschine mittels einer Pumpe (11), die Öl aus dem Schmierölkreis mittels einer Pumpe über eine Austrittsöffnung (5) aufweisende Zuführleitung (4) dem Kolben zuführt, wobei die Ölzufuhr über ein in Abhängigkeit von Motorparametern gesteuertes Ventil (17) geregelt und das Öl zumindest gegen die Unterseite des Kolbens (18) gespritzt wird,
    dadurch gekennzeichnet,
    daß zum Schmierölkreis zumindest eine Hauptversorgungsleitung (27) gehört, an die mehrere Zuführleitungen (4) mit je einer Austrittsöffnung (5) angeschlossen sind, wobei nur ein Ventil (17) in der Hauptversorgungsleitung vorgesehen ist.    Device for cooling the pistons (18) of an internal combustion engine by means of a pump (11), which supplies oil from the lubricating oil circuit to the piston by means of a pump via an inlet line (4) having an outlet opening (5), the oil inlet being controlled by a function of engine parameters Valve (17) is regulated and the oil is sprayed at least against the underside of the piston (18),
    characterized,
    that at least one main supply line (27) belongs to the lubricating oil circuit, to which a plurality of supply lines (4) each having an outlet opening (5) are connected, only one valve (17) being provided in the main supply line.         Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    daß das Ventil (17) als druckunabhängiges, schaltbares Ventil ausgebildet und im Bereich eines Endes der Hauptversorgungsleitung (27) vorgesehen ist.     Device according to claim 1,
    characterized,
    that the valve (17) is designed as a pressure-independent, switchable valve and is provided in the region of one end of the main supply line (27).         Vorrichtung nach Anspruch 1 oder 2,
    dadurch gekennzeichnet,
    daß das Ventil (17) als elektromagnetisches Ventil ausgebildet und von Motorparametern, wie Öltemperatur, Wassertemperatur oder Öldruck, steuerbar ist.    Device according to claim 1 or 2,
    characterized,
    that the valve (17) is designed as an electromagnetic valve and can be controlled by engine parameters such as oil temperature, water temperature or oil pressure.         Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    daß das Ventil (17) mit Sensoren des Motors und/oder mit dem Motorsteuergerät wirkungsmäßig verbunden ist, in dem die einzelnen Motorparameter abgelegt sind.    Device according to claim 1,
    characterized,
    that the valve (17) is operatively connected to sensors of the engine and / or to the engine control unit in which the individual engine parameters are stored.         Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    daß die Zuführleitung (4) mit ihrer als Ölspritzen ausgebildeten Austrittsöffnung (5) mit Abstand zu mindestens einer im Kolben (18) vorgesehenen Einlaßöffnung (6) angeordnet ist und in Durchflußverbindung steht.    Device according to one of the preceding claims,
    characterized,
    that the feed line (4), with its outlet opening (5) designed as an oil spray, is arranged at a distance from at least one inlet opening (6) provided in the piston (18) and is in flow connection.         Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    daß die Zuführleitung (4) mit ihrer Austrittsöffnung (5) konzentrisch zu der im Kolben (18) vorgesehenen Einlaßöffnung (6) angeordnet ist.     Device according to one of the preceding claims,
    characterized,
    that the supply line (4) with its outlet opening (5) is arranged concentrically with the inlet opening (6) provided in the piston (18).         Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    daß die Zuführleitung (4) mit ihrer Austrittsöffnung (5) in einer bestimmten Stellung des Kolbens (18) in die Einlaßöffnung (6) des Kolbens hineinragt.    Device according to one of the preceding claims,
    characterized,
    that the feed line (4) projects with its outlet opening (5) into the inlet opening (6) of the piston in a certain position of the piston (18).         Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    daß im Kolben (18) ein oder mehrere Ölkanäle (19) vorgesehen sind, wobei zumindest einer davon mit der Austrittsöffnung (5) der Zuführleitung (4) des Ölkreislaufs in Durchflußverbindung steht, die zumindest teilweise in einem Motorblock bzw. Zylindergehäuse (10) verläuft.    Device according to one of the preceding claims,
    characterized,
    that one or more oil channels (19) are provided in the piston (18), at least one of which is in flow connection with the outlet opening (5) of the feed line (4) of the oil circuit, which at least partially runs in an engine block or cylinder housing (10) .
    EP00112449A 1999-07-20 2000-06-10 Device for cooling and / or lubricating an internal combustion piston engine Withdrawn EP1070836A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE1999133363 DE19933363A1 (en) 1999-07-20 1999-07-20 Device for cooling and / or lubricating a reciprocating piston internal combustion engine
    DE19933363 1999-07-20

    Publications (2)

    Publication Number Publication Date
    EP1070836A2 true EP1070836A2 (en) 2001-01-24
    EP1070836A3 EP1070836A3 (en) 2003-02-12

    Family

    ID=7915004

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00112449A Withdrawn EP1070836A3 (en) 1999-07-20 2000-06-10 Device for cooling and / or lubricating an internal combustion piston engine

    Country Status (2)

    Country Link
    EP (1) EP1070836A3 (en)
    DE (1) DE19933363A1 (en)

    Cited By (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2005100758A1 (en) * 2004-04-13 2005-10-27 Bayerische Motoren Werke Device for cooling at least one piston of an internal combustion engine
    WO2005103456A3 (en) * 2004-04-22 2006-03-23 Wacker Construction Equipment Oil supply for an internal combustion engine
    EP1936135A1 (en) * 2005-10-14 2008-06-25 Toyota Jidosha Kabushiki Kaisha Hydraulic control device for engine
    DE102007060160A1 (en) 2007-12-13 2009-06-18 Ford Global Technologies, LLC, Dearborn Strategy for activating oil injection at an internal combustion motor, to cool the pistons, verifies four conditions for oil injection only when required
    EP1607599A3 (en) * 2004-06-02 2009-09-09 SchmitterGroup AG Piston liquid cooling with direct controlled pressure valve in engines.
    WO2010032118A1 (en) * 2008-09-18 2010-03-25 Toyota Jidosha Kabushiki Kaisha Oil supply control apparatus
    DE102009038676A1 (en) * 2009-08-24 2011-06-16 Audi Ag Oil circuit for internal combustion engine, has two partial circuits, which are decoupled from each other by valve, where one of partial circuits is permanently impinged with oil pressure
    WO2011154806A1 (en) * 2010-06-07 2011-12-15 Toyota Jidosha Kabushiki Kaisha Cooling system for piston of internal combustion engine
    WO2012120213A1 (en) * 2011-03-10 2012-09-13 Peugeot Citroen Automobiles Sa Combustion engine lubrication system comprising a variable-displacement oil pump
    EP2541004A1 (en) * 2010-02-23 2013-01-02 Honda Motor Co., Ltd. Piston cooling device
    EP2558694A1 (en) * 2010-04-15 2013-02-20 International Engine Intellectual Property Company, LLC Engine with electronically controlled piston cooling jets and method for controlling the same
    AT514089B1 (en) * 2013-09-04 2014-10-15 Avl List Gmbh Internal combustion engine with at least one cylinder
    WO2015049569A1 (en) * 2013-10-04 2015-04-09 Toyota Jidosha Kabushiki Kaisha Oil jet system for internal combustion engine, and control method for oil jet system
    DE102015217152A1 (en) 2015-09-08 2017-02-23 Fev Gmbh Cooling device for cooling a reciprocating piston with integrated position detection sensor

    Families Citing this family (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10323734B4 (en) * 2003-05-24 2009-01-29 Daimler Ag Internal combustion engine with several cylinders
    DE102008028474A1 (en) 2008-06-14 2009-12-17 Bayerische Motoren Werke Aktiengesellschaft Device for cooling or lubricating piston-internal combustion engine, has lubricant pump for supplying lubricant in lubricant line in crank case of internal-combustion engine
    DE102009057549A1 (en) 2009-12-09 2011-06-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for cooling or lubricating piston or path in cylinder of internal-combustion engine, involves feeding piston by nozzle device under pressure standing oil
    DE102010019757A1 (en) 2010-05-07 2011-11-10 Daimler Ag Reciprocating engine for motor vehicle, comprises housing portion, through which cylinder of reciprocating engine is formed, and bearing unit, at which crankshaft of reciprocating engine is supported
    DE102010025370A1 (en) 2010-06-28 2011-12-29 Schaeffler Technologies Gmbh & Co. Kg Fluid switching valve, in particular seat valve
    AT514804B1 (en) * 2013-12-10 2015-04-15 Steyr Motors Gmbh Internal combustion engine with oil channels
    AT515904B1 (en) * 2014-07-24 2016-01-15 Avl List Gmbh INTERNAL COMBUSTION ENGINE WITH START-STOP-FUNCTION
    DE102014219995A1 (en) * 2014-10-02 2016-04-07 Volkswagen Aktiengesellschaft Method for cooling a piston of an internal combustion engine and control unit

    Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE4243571C2 (en) 1992-12-22 1997-05-28 Opel Adam Ag Oil supply for the piston of a reciprocating piston internal combustion engine

    Family Cites Families (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE7420247U (en) * 1974-10-03 Motoren Und Turbinen Union Friedrichshafen Gmbh Flange connection for adjustable fastening of a spray nozzle for piston cooling of an internal combustion engine
    IT1018796B (en) * 1973-08-30 1977-10-20 Motoren Turbinen Union FREE JET NOZZLE
    DE2428451A1 (en) * 1974-06-12 1976-01-02 Motoren Turbinen Union Spray nozzle adjustment for combustion engines with piston cooling - has plano-convex intermediate flange to allow accurate nozzle positioning
    GB1567240A (en) * 1977-04-28 1980-05-14 Brown Tractors Ltd Internal combustion engines
    JPS57131817A (en) * 1981-02-10 1982-08-14 Kawasaki Heavy Ind Ltd Supercharged engine piston cooler
    DD237868A1 (en) * 1985-05-30 1986-07-30 Cunewalde Motoren DEVICE FOR CONTROLLING PISTON COOLING OF CHARGED INTERNAL COMBUSTION ENGINES
    JP2537373B2 (en) * 1987-09-18 1996-09-25 本田技研工業株式会社 Piston cooling device for internal combustion engine
    JPH01273821A (en) * 1988-04-23 1989-11-01 Toyota Autom Loom Works Ltd Cooling device for piston of internal combustion engine
    JPH04318215A (en) * 1991-04-16 1992-11-09 Mitsubishi Motors Corp Oil-cooled multiple cylinder engine
    JPH06280559A (en) * 1993-03-29 1994-10-04 Mazda Motor Corp Control device for cooling device of engine

    Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE4243571C2 (en) 1992-12-22 1997-05-28 Opel Adam Ag Oil supply for the piston of a reciprocating piston internal combustion engine

    Cited By (26)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2005100758A1 (en) * 2004-04-13 2005-10-27 Bayerische Motoren Werke Device for cooling at least one piston of an internal combustion engine
    US7753024B2 (en) 2004-04-22 2010-07-13 Wacker Neuson Se Oil supply for an internal combustion engine
    WO2005103456A3 (en) * 2004-04-22 2006-03-23 Wacker Construction Equipment Oil supply for an internal combustion engine
    CN101023246B (en) * 2004-04-22 2012-01-11 威克纽森欧洲公司 Oil supply for an internal combustion engine
    EP1607599A3 (en) * 2004-06-02 2009-09-09 SchmitterGroup AG Piston liquid cooling with direct controlled pressure valve in engines.
    EP1936135B1 (en) * 2005-10-14 2012-12-26 Toyota Jidosha Kabushiki Kaisha Hydraulic control device for engine
    EP1936135A1 (en) * 2005-10-14 2008-06-25 Toyota Jidosha Kabushiki Kaisha Hydraulic control device for engine
    DE102007060160A1 (en) 2007-12-13 2009-06-18 Ford Global Technologies, LLC, Dearborn Strategy for activating oil injection at an internal combustion motor, to cool the pistons, verifies four conditions for oil injection only when required
    DE102007060160B4 (en) * 2007-12-13 2014-03-27 Ford Global Technologies, Llc Strategy for activating oil spray nozzles
    WO2010032118A1 (en) * 2008-09-18 2010-03-25 Toyota Jidosha Kabushiki Kaisha Oil supply control apparatus
    DE102009038676A1 (en) * 2009-08-24 2011-06-16 Audi Ag Oil circuit for internal combustion engine, has two partial circuits, which are decoupled from each other by valve, where one of partial circuits is permanently impinged with oil pressure
    DE102009038676B4 (en) * 2009-08-24 2015-11-19 Audi Ag Oil circuit for an internal combustion engine
    EP2541004A1 (en) * 2010-02-23 2013-01-02 Honda Motor Co., Ltd. Piston cooling device
    EP2541004A4 (en) * 2010-02-23 2013-07-24 Honda Motor Co Ltd Piston cooling device
    EP2558694A4 (en) * 2010-04-15 2014-08-27 Int Engine Intellectual Prop Engine with electronically controlled piston cooling jets and method for controlling the same
    EP2558694A1 (en) * 2010-04-15 2013-02-20 International Engine Intellectual Property Company, LLC Engine with electronically controlled piston cooling jets and method for controlling the same
    WO2011154806A1 (en) * 2010-06-07 2011-12-15 Toyota Jidosha Kabushiki Kaisha Cooling system for piston of internal combustion engine
    CN102933812A (en) * 2010-06-07 2013-02-13 丰田自动车株式会社 Cooling system for piston of internal combustion engine
    FR2972488A1 (en) * 2011-03-10 2012-09-14 Peugeot Citroen Automobiles Sa THERMAL ENGINE LUBRICATING SYSTEM COMPRISING A VARIABLE CYLINDER OIL PUMP
    WO2012120213A1 (en) * 2011-03-10 2012-09-13 Peugeot Citroen Automobiles Sa Combustion engine lubrication system comprising a variable-displacement oil pump
    AT514089B1 (en) * 2013-09-04 2014-10-15 Avl List Gmbh Internal combustion engine with at least one cylinder
    AT514089A4 (en) * 2013-09-04 2014-10-15 Avl List Gmbh Internal combustion engine with at least one cylinder
    DE102014112008A1 (en) 2013-09-04 2015-03-05 Avl List Gmbh Internal combustion engine with at least one cylinder
    US9303547B2 (en) 2013-09-04 2016-04-05 Avl List Gmbh Internal combustion engine with at least one cylinder
    WO2015049569A1 (en) * 2013-10-04 2015-04-09 Toyota Jidosha Kabushiki Kaisha Oil jet system for internal combustion engine, and control method for oil jet system
    DE102015217152A1 (en) 2015-09-08 2017-02-23 Fev Gmbh Cooling device for cooling a reciprocating piston with integrated position detection sensor

    Also Published As

    Publication number Publication date
    EP1070836A3 (en) 2003-02-12
    DE19933363A1 (en) 2001-02-01

    Similar Documents

    Publication Publication Date Title
    EP1070836A2 (en) Device for cooling and / or lubricating an internal combustion piston engine
    DE3633136C2 (en)
    DE19515191B4 (en) High-pressure fuel pump
    DE69630019T2 (en) V-DESIGN DIESEL ENGINE
    DE102005006808B4 (en) Oil injection system for pistons and cylinders
    EP0636772B1 (en) Internal combustion engine
    DE19544533A1 (en) Dry=sump lubrication system for four=stroke engine
    WO2005103456A2 (en) Oil supply for an internal combustion engine
    WO2006037515A1 (en) Device for regulating piston cooling of a reciprocating internal combustion engine
    DE19819431B4 (en) Oil channel structure for an engine
    DE4243571C2 (en) Oil supply for the piston of a reciprocating piston internal combustion engine
    DE10323734B4 (en) Internal combustion engine with several cylinders
    DE102004048672B4 (en) Block-mounted piston injection device
    DE102017130691A1 (en) Device for lubricating a connecting rod bearing
    DE4116942C1 (en) Cylinder head for multicylinder IC engine - has accessory cover bolts with oil bores for guiding oil to bearing points and valve tappets
    EP0251159B1 (en) Return line for leak gas from a crank case
    DE102010051761A1 (en) Method for cooling a high pressure ram
    EP0347580B1 (en) Lubrication system with jet cooling of the pistons of an internal-combustion engine
    DE102004019853A1 (en) Cylinder head structure for vehicle engine, includes accumulation barricade which is built on floor space of valve chamber at lower side of oil collecting channel
    EP1722075B1 (en) Cylinder head
    EP0439995B1 (en) Piston for a four-stroke internal combustion engine
    DE102018102528A1 (en) Lubricating structure for internal combustion engine
    DE2511451C3 (en) Liquid-cooled rotary piston internal combustion engine
    DE4012475A1 (en) Cooling system for piston of IC engine - by nozzle which directs jet of oil upwards onto undersurface of piston crown
    DE60113781T2 (en) Outboard motor

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Extension state: AL LT LV MK RO SI

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

    18D Application deemed to be withdrawn

    Effective date: 20030103