EP0154939B1 - Piston en deux parties, refroidi à l'huile - Google Patents

Piston en deux parties, refroidi à l'huile Download PDF

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Publication number
EP0154939B1
EP0154939B1 EP85102582A EP85102582A EP0154939B1 EP 0154939 B1 EP0154939 B1 EP 0154939B1 EP 85102582 A EP85102582 A EP 85102582A EP 85102582 A EP85102582 A EP 85102582A EP 0154939 B1 EP0154939 B1 EP 0154939B1
Authority
EP
European Patent Office
Prior art keywords
piston
oil
cooling
cylinder
lower section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85102582A
Other languages
German (de)
English (en)
Other versions
EP0154939A2 (fr
EP0154939A3 (en
Inventor
Ludwig Elsbett
Günter Elsbett
Klaus Elsbett
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0154939A2 publication Critical patent/EP0154939A2/fr
Publication of EP0154939A3 publication Critical patent/EP0154939A3/de
Application granted granted Critical
Publication of EP0154939B1 publication Critical patent/EP0154939B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F01M2005/004—Oil-cooled engines
    • 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
    • F01P2003/006—Liquid cooling the liquid being oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • the proposal has already been made to equip the lower part of the piston with oil guide surfaces in a two-part piston (cf. DE-OS 25 434 78).
  • the heat can be dissipated from the cylinder via the lower piston part and the oil spray cooling to the inside of the oil, and heat can also be transferred from the upper cylinder part to the lower cylinder part, which brings about a standardization of the cylinder temperature (cf. DE-ES 33 14 543) .
  • the state of the art with regard to the internal oil spray cooling and the lower piston part of a two-part piston has the result that, although the cylinder temperature is standardized in the longitudinal direction of the cylinder, a uniform temperature level is not achieved in the cylinder circumference. However, it is precisely the internal oil spray cooling which is to be able to be aligned uniformly or comparatively to the temperature of the entire inner surface of the cylinder. Because only the thermal roundness of the cylinder enables the installation of completely round pistons and thus the sealing play between piston and cylinder is reduced to a minimum.
  • the newly developed proposal is to improve the internal oil cooling of the cylinder by staggering the backflow of the sprayed cooling oil in the lower part of the piston by 90 °.
  • the lower piston part should have several guide surfaces, with at least one inner guide surface (along the pin) aligning the cooling oil to the pin and past it towards the upper piston part in a known manner, while at least one outer guide surface ensures the return flow of the oil, specifically across the pin axis, so that the cooling oil (in the previously not cooled area) is drained off on the cylinder wall.
  • the oil spraying up from below cools indirectly via the inner oil guide surface (s) the cylinder areas, which are in the longitudinal position of the pin, while the returning oil, which is not steered on the upper part of the piston, cools the cylinder areas diagonally to the position of the pin.
  • thermal out-of-roundness of cast-in cylinder bushes can be compensated for by the proposed internal cooling and the piston lower part; stronger cooling across the pin axis results in an even tempering of the cylinder as a whole.
  • Fig. 1 In Fig. 1, the inner and outer oil flushing of the cylinder is shown, part (1) representing the motor housing with the oil channel (2). On the oil channel (2), which is fed with lubricating oil, one or more oil splashes (3) are arranged, which spray the interior of the cylinder (4) in the plane of motion of the connecting rod.
  • the spray oil (5) is controlled by guide vanes (6) in the direction of the upper piston part (7) and from there is conveyed back from above (5a) to the lower piston part (8).
  • the piston lower part (8) On the inside of the cylinder, better oil cooling is achieved over the entire circumference of the cylinder.
  • the piston lower part (8) has on its inside next to the mentioned guide vanes (6), which run in the direction of the piston pin (20), on its outside, guide surfaces (31) (Fig. 2), which are transverse to the piston pin (20) stand. Oil cooling thus reaches the entire cylinder circumference and approximately 80% of the cylinder length of the inner cylinder surface up to the level of the upper piston part.
  • the inner cooling oil does not reach the cylinder surface covered by the piston sealing jacket (22), which is why the sealing jacket is cooled on its inner surface with spray oil (5a).
  • An annular channel (10) is inserted approximately as deep as the length of the sealing jacket, so that good oil cooling is guaranteed on both sides of this important upper cylinder part.
  • a combustion process is provided in the piston combustion chamber (27), in which the excess air (29) rotates around the hot combustion zone (28), which provides good protection against high temperatures in the upper piston part (7).
  • Fig. 2 shows a section of the lower piston part (8) in the direction of the piston pin with the outer guide surfaces (31) which catch the spray oil (5a) (Fig. 1) thrown back by the upper piston part (7) (Fig. 1) .
  • the oil is held here briefly by the lower oil sealing edge (33) in order to achieve more intensive cooling of the cylinder wall in this plane. It then flows through the holes or a slot (34) into the lower part of the cylinder (4).
  • the arrows (5a) show the oil (5) previously sprayed up on the guide surfaces (6), which is deflected back by the piston top and transversely to the injection plane (offset by 90 °) through the new guide surfaces (31) its outflow to the lower part of the cylinder ( 4) takes place.
  • more or fewer guide surfaces including those that are divided or at an angle to one another can be used for other application examples; as well as the shape of the inner or outer guide surfaces should not be determined by this example and also not the type of bore or the dissipating slot.

Claims (4)

1. Piston articulé en deux pièces refroidi par l'huile, dont les pièces du piston sont assemblées par un système d'articulation sur un axe de piston (20), la partie supérieure (7) étant tournée vers la chambre à combustion absorbe la pression du gaz et le partie inférieure (8) la pression latérale, avec un refroidissement du fond du piston au moyen d'injection par l'huile de refroidissement (5) venant de la boîte de manivelle, et avec des surfaces conductrices en-dessous du fond de piston, caractérisé en ce que la jupe de piston (8) possède quatre surfaces conductrices, les aubes conductrices intérieures (6) conduisant (5a) l'huile injectée et haut dans l'espace entre la jupe de piston et le haut de piston (5a), d'où elle este à nouveau évacuée vers le bas, en passant par les surfaces conductrices extérieures (31) aux surfaces du cylindre situées transversalement à l'axe de l'axe de piston.
2. Piston articulé selon la revendication 1, caractérisé en ce que l'huile de refroidissement (5a) admise à la paroi du cylindre (4) est captée dans un espace intermédiaire entre la paroi latérale de la jupe de piston (8) et la paroi du cylindre (4) et est retenue par un bord étanche (33) à l'extrémité inférieure de la jupe de piston (8).
3. Piston articulé selon la revendication 2, caractérisé en ce que l'huile de refoidissement (5a) dans l'espace intermédiaire s'écoule par une fente ou un alésage (34) jusqu'à la boîte de manivelle.
4. Piston articulé selon l'une des revendications 1 à 3, caractérisé en ce que l'huile de refroidissement est injectée sur les deux côtés de l'axe de piston aux surfaces conductrices respectives (6).
EP85102582A 1984-03-13 1985-03-07 Piston en deux parties, refroidi à l'huile Expired - Lifetime EP0154939B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3409101 1984-03-13
DE3409101 1984-03-13

Publications (3)

Publication Number Publication Date
EP0154939A2 EP0154939A2 (fr) 1985-09-18
EP0154939A3 EP0154939A3 (en) 1987-11-04
EP0154939B1 true EP0154939B1 (fr) 1990-12-27

Family

ID=6230313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102582A Expired - Lifetime EP0154939B1 (fr) 1984-03-13 1985-03-07 Piston en deux parties, refroidi à l'huile

Country Status (4)

Country Link
US (1) US4715335A (fr)
EP (1) EP0154939B1 (fr)
JP (1) JPS618418A (fr)
DE (1) DE3581093D1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895111A (en) * 1984-03-13 1990-01-23 Elsbett L Engine cooling system
DE4206165C2 (de) * 1991-03-13 2000-03-30 Volkswagen Ag Kurbelgehäuse für eine Hubkolben-Brennkraftmaschine
GB2286014A (en) * 1994-01-28 1995-08-02 Perkins Ltd Engine rocker arm lubrication
US5595145A (en) * 1995-05-31 1997-01-21 Kabushiki Kaisha Komatsu Seisakusho Cooling structure of diesel engine piston
US5533472A (en) * 1995-07-31 1996-07-09 Chrysler Corporation Oil jet nozzle for an internal combustion with reciprocating pistons
US6257188B1 (en) * 1998-09-02 2001-07-10 Honda Giken Kogyo Kabushiki Kaisha Structure for mounting cylinder head cover of internal combustion engine
US6250275B1 (en) 1999-08-16 2001-06-26 Caterpillar Inc. Internal combustion engine piston pin lubrication
EP1268991B1 (fr) * 2000-03-28 2006-07-05 Federal-Mogul Corporation Piston a grande puissance pourvu d'un deflecteur d'huile
FR2844003B1 (fr) * 2002-09-02 2006-06-16 Bontaz Centre Sa Gicleur a projections multiples pour refroidissement de moteur, et moteurs equipes de tels gicleurs
US6866011B1 (en) * 2003-10-09 2005-03-15 General Motors Corporation Block-mounted piston squirter
JP4580328B2 (ja) 2005-11-29 2010-11-10 日野自動車株式会社 エンジンの潤滑構造
AP2009004853A0 (en) * 2006-10-05 2009-06-30 Hinderks M V Improved reciprocating devices
US20120031367A1 (en) * 2010-08-05 2012-02-09 Hyundai Motor Company Cylinder bore wall oil squirter, reciprocating engine embodying same and where the engine further embodies a rollerized cranktrain
JP2013130129A (ja) * 2011-12-21 2013-07-04 Kawasaki Heavy Ind Ltd エンジンのピストンの冷却構造
DE102012200279A1 (de) * 2012-01-11 2013-07-11 Ford Global Technologies, Llc Verfahren und Vorrichtung zum Betreiben eines Schmiersystems einesVerbrennungsmotors
US20150059678A1 (en) * 2013-09-03 2015-03-05 Delphi Technologies, Inc. Cylinder head assembly with oil reflector for lubrication of a rocker arm
US11248515B2 (en) * 2019-08-02 2022-02-15 Transportation Ip Holdings, Llc Piston cooling jet system

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2394675A1 (fr) * 1977-06-13 1979-01-12 Stabilimenti Meccanici Vm Spa Moteur a combustion interne refroidi par l'huile de lubrification

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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2394675A1 (fr) * 1977-06-13 1979-01-12 Stabilimenti Meccanici Vm Spa Moteur a combustion interne refroidi par l'huile de lubrification

Also Published As

Publication number Publication date
EP0154939A2 (fr) 1985-09-18
EP0154939A3 (en) 1987-11-04
JPS618418A (ja) 1986-01-16
JPH0262685B2 (fr) 1990-12-26
DE3581093D1 (de) 1991-02-07
US4715335A (en) 1987-12-29

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