EP2213851B1 - Dispositif d'alimentation en huile pour lubrifier un cylindre et/ou refroidir un piston - Google Patents

Dispositif d'alimentation en huile pour lubrifier un cylindre et/ou refroidir un piston Download PDF

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Publication number
EP2213851B1
EP2213851B1 EP20090012608 EP09012608A EP2213851B1 EP 2213851 B1 EP2213851 B1 EP 2213851B1 EP 20090012608 EP20090012608 EP 20090012608 EP 09012608 A EP09012608 A EP 09012608A EP 2213851 B1 EP2213851 B1 EP 2213851B1
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EP
European Patent Office
Prior art keywords
oil
piston
supply device
oil supply
cylinder
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.)
Active
Application number
EP20090012608
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German (de)
English (en)
Other versions
EP2213851A2 (fr
EP2213851A3 (fr
Inventor
Frank Maier
Johann-Georg Ulrich
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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.)
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Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP2213851A2 publication Critical patent/EP2213851A2/fr
Publication of EP2213851A3 publication Critical patent/EP2213851A3/fr
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Publication of EP2213851B1 publication Critical patent/EP2213851B1/fr
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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
    • F01M1/08—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 present invention relates to an oil supply device for lubricating a cylinder and / or for cooling a piston according to the preamble of claim 1.
  • the invention also relates to a combustion engine equipped with such an oil supply device.
  • a generic oil supply device for lubricating and / or cooling pistons and cylinders during various engine operating conditions.
  • the oil supply device comprises a substantially tubular distributor of an oil supply with an inlet which is connected to a pressurized engine oil source, and at least one outlet which is connected to at least one oil supply rail.
  • the oil supply rail includes a longitudinal manifold with integral nozzles of an oil sprayer and mounting brackets.
  • an oil supply device for lubricating a cylinder wall and for cooling a piston in which a valve piston is provided which releases an oil line for the cylinder lubrication at a low oil pressure, wherein at an increased oil pressure another line is released for piston cooling.
  • a valve piston is provided which releases an oil line for the cylinder lubrication at a low oil pressure, wherein at an increased oil pressure another line is released for piston cooling.
  • an internal combustion engine is described, in which a nozzle is provided with a plurality of outputs, with a cylinder wall lubrication and a piston cooling is effected.
  • An oil supply device is known in which two nozzle exits are provided, which intersect in such a way that, depending on the oil pressure, different amounts emerge from the respective nozzle.
  • a retaining pin is provided, with which a valve piston is held in its open position.
  • a temperature-controlled oil spray nozzle for piston cooling which comprises a control valve with a, a control opening associated control member.
  • the latter is biased via a first actuating part into a closing position closing the control opening and biased oppositely via a second actuating part and can be brought into an open position. Due to the fact that the pressure force acting on the control member by the lubricant via the control opening acts perpendicular to the movement of the control member, the first and the second control part can be made correspondingly small.
  • a device for cooling the piston of an internal combustion engine by means of a lubricating oil pump is known, the oil from the lubricating oil circuit each piston via one, an outlet opening having feed line at least at the bottom supplies.
  • the oil is supplied via at least a valve which is designed as a check valve.
  • the present invention is concerned with the problem of providing for a generic oil supply device an improved or at least one alternative embodiment, with which the above disadvantages can be at least reduced.
  • the invention is based on the general idea, an oil supply device for lubricating a cylinder and / or for cooling a piston of an internal combustion engine in such a way that the lubrication of the cylinder is constantly, while the cooling of the piston can be activated and thereby can be activated as needed.
  • panschlag and oil foaming are avoided or at least reduced the risk of these phenomena, especially on a cold start of the engine and / or in low-load operating conditions, which on the one hand optimal lubrication of the Pistons in the cylinder liners and on the other hand give a particularly economical operation of the internal combustion engine.
  • the oil supply device has at least one nozzle device, which has an oil inlet and two oil nozzles, one of which is directed to the cylinder and the other to the piston.
  • the latter is preceded by a valve device which opens from a predefined oil pressure.
  • a piston-cylinder unit 1 in each case has a piston 3, which can be displaced in a translatory manner in a cylinder 2.
  • the piston-cylinder unit 1 can be designed as an internal combustion engine, in particular in a motor vehicle.
  • so-called piston rings 6, which are embedded in an outwardly open annular groove on the piston skirt and slide in the cylinder 2 are usually arranged on the piston 3.
  • a nozzle device 8 of an oil supply device 9 in a connecting rod 7, a nozzle device 8 of an oil supply device 9 (see. Fig. 4 and 5 ), which has at least one oil nozzle 10, which is directed to the cylinder 2 and the lubrication of the cylinder surface is used.
  • Another oil nozzle 10 ' may be directed to the piston 3, for example (see. Fig. 2 and 3 ) and to cool the same at least temporarily sprayed with oil.
  • the oil supply device 9 is now designed such that a lubrication of the cylinder 2 takes place continuously, while the cooling of the piston 3 is switchable, that is, only takes place temporarily.
  • the oil supply device 9 according to the invention thus reduces the supply of oil and in particular injects only oil via the oil nozzle 10 to the cylinder 2 for lubricating the piston 3, in particular in certain engine operating states, such as a cold start in which piston cooling is not required.
  • the oil supply device 9 has a nozzle device 8, which has an oil inlet 12 and two oil nozzles 10, 10 ', one of which is directed to the cylinder 2 and the other to the piston 3.
  • the oil supply device 9 according to the Fig. 3 has these two spatially separate oil nozzles 10 and 10 ', of which also one oil nozzle 10 is directed to the cylinder 2 and the other oil nozzle 10' on the piston 3. It is thus possible in principle to form the oil nozzles 10 and 10 'separately from each other or to combine them in a common nozzle device 8.
  • an oil supply device 9 is shown in which the nozzle device 8 has one of the piston 3 directed to the oil nozzle 10 'upstream valve device 13 which opens from a predefined oil pressure.
  • the valve device 13 has a housing 11 and a valve piston 14, which is biased by a spring 15 in its closing direction. With its open side while the valve piston 14 facing the oil inlet 12.
  • the valve piston 14 In its piston skirt, the valve piston 14 has a passage opening 16, via which from a predefined position of the valve piston 14 there is a connection between the oil inlet 12 and the nozzle 10 'directed onto the piston 3.
  • valve piston 14 has an outwardly open annular groove 17, in which a by means of a spring 15 'acted upon locking pin 18 engages, provided that the valve piston 14 in its closed position as is according to the Fig. 4 is shown.
  • valve piston 14 in its piston skirt on a radial opening 19, which opens on the one hand in the annular groove 17 and on the other hand communicates via a piston interior with the oil inlet 12 communicating.
  • the locking pin 18 biasing spring 15 ' is designed such that the locking pin 18 is adjusted from a predefined oil pressure against the spring force of the spring 15' in its release position and then the valve piston 14 can be moved upwards against the spring 15. As soon as the through-opening 16 reaches a control edge 20, the oil nozzle 10 'communicating with the oil inlet 12 is connected.
  • the cylinder 2 supplying the oil nozzle 10 is permanently connected to the oil inlet 12, so that lubrication of the cylinder 2 can be carried out continuously and independently of individual engine operating conditions.
  • the two oil nozzles 10 and 10 ' can be controlled in such a way that the oil nozzle 10 is always open or controlled as a function of the oil pressure or other map points so that it opens at least in front of the oil nozzle 10'.
  • the oil nozzle 10 is designed such that it can discharge a reduced volume flow with respect to the oil nozzle 10 'and usually impinges on another position in the region of the raceway and thereby can exploit scattering effects.
  • valve device 13 is only above a certain oil pressure limit of the oil pressure in the annular gap 17 so high that the locking pin 18 is pushed back against the spring 15 'and the valve piston 14 releases in its adjustment. Then the valve piston 14 is moved upwards, against the spring 15 to the passage opening 16 reaches the control edge 20 and thereby a communicating connection between the oil inlet 12 and the oil nozzle 10 'is given.
  • Both the valve device 13 for the control of the oil nozzle 10 'and a valve device, not shown, for controlling the oil nozzle 10 can also have electrically or mechanically controllable locking mechanisms.
  • valve piston 14 With a reduction of the oil pressure, the valve piston 14 by the spring 15 back into its seat, that is, in its closed position, adjusted and the locking pin 18 can dip into the annular groove 17, provided that a predefined limit pressure is exceeded.
  • the valve piston 14 thus remains in the control range, even in the case when the oil pressure is below a release pressure at which the locking pin 18 is transferred to its unlocked position.
  • the oil supply device 9, which is integrated, for example, in the connecting rod 7, can generally be supplied with oil of a connecting rod bearing oil supply in the crankshaft.
  • the supply of the oil supply device 9 can be done in principle via openings in the bearing shells 21 and 21 'of the connecting rod bearing.
  • an intermittent or continuous jet formation at the oil nozzle 10 for lubricating the cylinder 2 can be generated.
  • oil supply device 9 With the oil supply device 9 according to the invention, an improved, need-based, oil supply can be achieved and in particular the known from the prior art disadvantages in terms of oil foaming, panschbuchneres, oil aging and consumption disadvantages can be avoided. Also can be prevented that excess oil can pass through the piston rings 6 in the combustion chamber 5 and there leads to increased emissions.

Claims (9)

  1. Dispositif d'alimentation en huile (9) pour lubrifier un cylindre (2) et/ou refroidir un piston (3), dans lequel
    - le dispositif d'alimentation en huile (9) est conçu d'une telle manière qu'une lubrification du cylindre (2) soit effectuée en permanence, tandis que le refroidissement du piston (3) peut être interrompu, ou que la lubrification du cylindre (2) soit effectuée déjà à une pression d'huile plus basse, à laquelle il ne se produit encore aucun refroidissement du piston (3),
    - le dispositif d'alimentation en huile (9) présente au moins un dispositif d'injecteurs (8), qui comporte une arrivée d'huile (12) et au moins deux injecteurs d'huile (10, 10'), dont l'un est dirigé vers le cylindre (2) et dont l'autre est dirigé vers le piston (3), et
    - le dispositif d'injecteurs (8) présente un dispositif de soupape (13) en amont de l'injecteur d'huile (10') dirigé vers le piston (3), qui s'ouvre à partir d'une pression d'huile prédéterminée, caractérisé en ce que
    le dispositif de soupape (13) comporte un piston de soupape à ressort (14), qui présente une rainure annulaire ouverte vers l'extérieur (17), dans laquelle s'engage une broche de verrouillage à ressort (18), pour autant que le piston de soupape (14) se trouve dans sa position de fermeture.
  2. Dispositif d'alimentation en huile selon la revendication 1, caractérisé en ce que le piston de soupape (14) est tourné avec sa face ouverte vers l'arrivée d'huile (12) et présente dans sa jupe de piston une ouverture de passage (16), par laquelle il s'établit une communication entre l'arrivée d'huile (12) et l'injecteur d'huile (10') dirigé vers le piston (3) à partir d'une position prédéterminée du piston de soupape (14).
  3. Dispositif d'alimentation en huile selon la revendication 1 ou 2, caractérisé en ce que le piston de soupape (14) présente dans sa jupe de piston une ouverture radiale (19), qui débouche dans la rainure annulaire (17) d'une part et qui est en communication avec l'arrivée d'huile (12) par un espace intérieur du piston d'autre part.
  4. Dispositif d'alimentation en huile selon la revendication 3, caractérisé en ce qu'un ressort (15') précontraignant la broche de verrouillage (18) dans sa position de verrouillage est conçu de telle manière que la broche de verrouillage (18) soit déplacée dans sa position de libération, contre la force du ressort, à partir d'une pression d'huile prédéterminée.
  5. Dispositif d'alimentation en huile selon la revendication 1, caractérisé en ce que le dispositif d'alimentation en huile (9) comporte au moins deux injecteurs d'huile (10, 10') spatialement espacés l'un de l'autre, dont l'un est dirigé vers le cylindre (2) et dont l'autre est dirigé vers le piston (3).
  6. Dispositif d'alimentation en huile selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il est prévu un dispositif de soupape en amont de l'injecteur d'huile (10) dirigé vers le cylindre (2).
  7. Dispositif d'alimentation en huile selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'injecteur d'huile (10) dirigé vers le cylindre (2) et/ou l'injecteur d'huile (10') dirigé vers le piston (3) sont disposés dans un carter de vilebrequin et/ou dans une bielle (7).
  8. Dispositif d'alimentation en huile selon la revendication 1, caractérisé en ce que la broche de verrouillage (18) peut être déplacée électriquement ou mécaniquement.
  9. Moteur à combustion interne avec un dispositif d'alimentation en huile (9) selon l'une quelconque des revendications 1 à 8.
EP20090012608 2009-01-31 2009-10-06 Dispositif d'alimentation en huile pour lubrifier un cylindre et/ou refroidir un piston Active EP2213851B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009006963A DE102009006963A1 (de) 2009-01-31 2009-01-31 Ölversorgungseinrichtung

Publications (3)

Publication Number Publication Date
EP2213851A2 EP2213851A2 (fr) 2010-08-04
EP2213851A3 EP2213851A3 (fr) 2011-04-27
EP2213851B1 true EP2213851B1 (fr) 2012-11-14

Family

ID=42116019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090012608 Active EP2213851B1 (fr) 2009-01-31 2009-10-06 Dispositif d'alimentation en huile pour lubrifier un cylindre et/ou refroidir un piston

Country Status (3)

Country Link
EP (1) EP2213851B1 (fr)
CN (1) CN101793178B (fr)
DE (1) DE102009006963A1 (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US8707927B2 (en) 2011-07-20 2014-04-29 GM Global Technology Operations LLC Oil squirter
US8387571B2 (en) * 2011-11-04 2013-03-05 Ford Global Technologies, Llc Oil delivery system
CN103470357B (zh) * 2013-06-24 2016-01-20 浙江吉利汽车研究院有限公司杭州分公司 一种发动机活塞冷却喷嘴结构及控制方法
JP6148111B2 (ja) * 2013-08-09 2017-06-14 トヨタ自動車株式会社 オイルジェット
DE102013014930A1 (de) * 2013-09-11 2015-03-12 Man Truck & Bus Ag Steuerventil für eine Schmiermitteldüse
DE102015015977A1 (de) 2015-12-10 2017-06-14 Daimler Ag Hubkolbenmaschine für einen Kraftwagen
DE102017206152A1 (de) 2017-04-11 2018-10-11 Bayerische Motoren Werke Aktiengesellschaft Hubkolben-Brennkraftmaschine
DE102017212547A1 (de) 2017-07-21 2019-01-24 Bayerische Motoren Werke Aktiengesellschaft Hubkolben-Brennkraftmaschine
DE102019101469A1 (de) 2019-01-22 2020-07-23 Bayerische Motoren Werke Aktiengesellschaft Hubkolben-Brennkraftmaschine mit einer Kolbenkühlung
CN116378810B (zh) * 2023-03-16 2024-03-26 中国空气动力研究与发展中心空天技术研究所 一种用于活塞发动机的冷却装置

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Also Published As

Publication number Publication date
DE102009006963A1 (de) 2010-08-05
EP2213851A2 (fr) 2010-08-04
EP2213851A3 (fr) 2011-04-27
CN101793178A (zh) 2010-08-04
CN101793178B (zh) 2013-06-12

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