WO2014154616A1 - Kolben mit durch spritzöl gekühltem kolbenboden - Google Patents
Kolben mit durch spritzöl gekühltem kolbenboden Download PDFInfo
- Publication number
- WO2014154616A1 WO2014154616A1 PCT/EP2014/055807 EP2014055807W WO2014154616A1 WO 2014154616 A1 WO2014154616 A1 WO 2014154616A1 EP 2014055807 W EP2014055807 W EP 2014055807W WO 2014154616 A1 WO2014154616 A1 WO 2014154616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- connecting rod
- spray
- oil
- shell part
- Prior art date
Links
Classifications
-
- 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
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- 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
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/0069—Multi-part pistons the crown and skirt being interconnected by the gudgeon pin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
Definitions
- the invention relates to a piston, in particular an internal combustion engine, with piston bottom cooled by spray oil.
- DE 25 39 470 A1 shows such a piston with associated spray nozzle, wherein the ejected spray oil is injected into the downwardly open piston interior, so that the piston interior facing the bottom of the piston crown is constantly cooled.
- DE 25 39 470 A1 proposes to arrange at the combustion chamber distal lower end of the piston a connecting rod passage annularly enclosing Olauffangwanne, which absorbs at least a portion of the sprayed against the underside of the piston head oil and acts as a shaker space in the course of the movements of the piston and the Trapped oil again thrown against the piston crown.
- the invention is based on the general idea of applying cooling oil to the piston head from a connecting rod-side shaker space, which ensures effective and uniform cooling of the piston crown.
- the reservoir may be formed as a semi-tubular shell part, which is disposed on a piston surface to be cooled end surface of the connecting rod, wherein the open half pipe side of the shell part arranged pleuel Material and the longitudinal axis of the schrohrformigen shell part to the axis of the connecting joint of connecting rod and piston centered U-bend can form.
- This shell part may be formed, for example, as a sheet metal part. Instead, a plastic shell part is possible because the thermal load of the reservoir remains low.
- Fig. 1 shows an axial section of a piston with associated connecting rod, wherein the cutting plane containing the axis of the connecting joint between the connecting rod and piston
- Fig. 2 is an axial section of this piston according to the section line
- the piston 1 has a piston head 2 with a combustion bowl 3.
- the piston crown is peripherally limited by a circumferential land land 4, to which in the axial downward direction of the piston, a circumferential ring section 5 with circumferential grooves for receiving not connected piston rings connects.
- piston bosses 6 are arranged with hub bores 7 for receiving a piston pin, not shown.
- a circumferential cooling channel 9 is provided radially within the firing bar 4, in which oil is injected for cooling during engine operation in a manner further below.
- the underside of the piston crown 2 is acted upon during engine operation with cooling spray oil.
- the present invention could also be used on a only cooled by Anspritzkühlung piston.
- an oil reservoir 10 is arranged on the piston crown 2 facing side of the piston-side end of the connecting rod 8, which can be formed for example by a half-tubular sheet metal shell 1 1.
- This sheet metal shell 1 1 has an arcuate longitudinal axis, such that the shell 1 1 forms a centered to the axis A of the piston pin, not shown, U-bend and connect as closely as possible to the the piston crown 2 facing outside of the piston end of the connecting rod 8.
- bumps 12 are impressed in the sheet metal shell, which protrude inwards to the connecting rod 8 out.
- the bumps 12 are adapted to abut against the outer surface of the connecting rod 8, wherein the height of the bumps 12 relative to the sheet metal shell 1 1 determines the distance of the sheet metal shell 1 1 from the connecting rod 8.
- the arranged on the inside of the sheet metal shell 1 1 contact surfaces of the bumps 12 may be spot welded to the connecting rod.
- the sheet metal shell 1 1 is formed as a funnel-like mouth 13, while the other longitudinal end of the sheet metal shell 1 1 is completed.
- a plurality of injection holes 14 are provided on the piston crown 2 facing side of the sheet metal shell 1 1 or preferably a plurality of injection holes 14 are provided.
- the formed by the sheet metal shell 1 1 oil reservoir 10 cooperates with a stationary in the crank chamber of an internal combustion engine arranged spray nozzle 15 which injects oil during a predetermined phase of the working cycle of the piston 1 into the mouth 13 of the sheet metal shell 1 1 and thus into the oil reservoir 10 , Then, when the piston 1 passes through its top dead center during the working cycle and due to the change in direction of the piston motion very large accelerations occur, the previously recorded in the oil reservoir 10 oil is ejected from the spray holes 14 on the facing bottom of the piston crown 2.
- the oil reservoir 10 forms a shaker space, the shaking movements are used for the ejection of the oil.
- the size of two or more spray openings (14) in the shell part (11) along a U-shaped longitudinal axis increase with increasing distance from the inlet opening (13).
- the shell part (1 1) at least a first and a second injection opening (14), wherein the second is greater than the first and further than the first of the input opening (1 1) is removed.
- both measures the most oil is ejected through the spray openings 14 where it is needed most urgently for cooling, namely on the spray jet side facing away from the connecting rod.
- the cooling of the spray nozzle 15 facing away from the part of the piston crown 2 is specifically improved. Since the remote areas always receive less cooling oil with pure Anspritzkühlung with increasing distance from the spray jet, both measures contribute to a more uniform cooling of the piston crown 2 at.
- the cooling oil is thus passed around in the reservoir 10 around the connecting rod and then released especially there, where the cooling of the piston crown would be weakest only by spraying. Inadequately cooled and thereby excessively hot areas, in which impinging oil can coke and form unwanted carbon can be avoided.
- the connecting rod 8 performs pivoting movements relative to the piston 1, which lead to a wobbling movement of the mouth 13, wherein at the same time the distance to the spray nozzle 15 changes.
- These wobbling movements and distance changes can serve to control the spray jet generated by the nozzle 15.
- the spray jet or the spray nozzle 15 and the mouth 13 can be aligned with one another such that the injection molding beam is directed into the mouth 13 only during a first phase of the working cycle of the piston, whereas in a subsequent or preceding second phase it misses the mouth 13 and either directly injects the piston head 2 or preferably penetrates into a piston-side opening 16 which is in communication with the piston annular cooling channel 9 communicates, so that it is supplied with cooling oil, which can subsequently leak through the opening 16 or another opening, not shown again.
- the oil reservoir 10 according to the invention can alternately be filled with a single oil nozzle 15 and a conventional injection or duct cooling can be effected.
- each piston in the crank chamber of the engine two spray nozzles, wherein a spray nozzle for filling the oil reservoir 10 and the other spray nozzle for injecting the piston crown 2 or for introducing oil into the opening 16 and serve the cooling channel 9.
- crankshaft Depending on the direction of rotation of the drive connected to the piston 1 via the connecting rod 8 crankshaft performs the mouth 13 of the oil reservoir 10 relative to the spray nozzle 15 wobbling in opposite directions, wherein the mouth 13 can move on the one hand in the direction of the spray jet or against the spray direction. In the former case, when filling the reservoir
- a sheet metal shell 1 1 can also be a shell part made of a different material, such as plastic or the like, can be provided, with thermally relatively little resilient materials are possible because the shell part
- the shell part 1 1 should be relatively flat, such that a relatively small distance between the piston head and hinge axis of the articulated connection of piston 1 and connecting rod 8 and, accordingly, a low compression height of the piston are made possible.
- the invention is not limited to the forms of the pistons shown in FIGS. 1 and 2. Rather, the spray cooling of the piston crowns according to the invention is suitable for any piston shapes, e.g. Also in pistons with combustion chamber side convex spherical piston bottoms, possible and advantageous.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480017764.XA CN105051358B (zh) | 2013-03-26 | 2014-03-24 | 包括由飞溅润滑进行冷却的活塞头的活塞 |
US14/780,148 US9828939B2 (en) | 2013-03-26 | 2014-03-24 | Piston comprising a piston head cooled by splash lubrication |
BR112015024223A BR112015024223A2 (pt) | 2013-03-26 | 2014-03-24 | pistão com cabeçote de pistão arrefecido por vaporização de óleo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013205298.7A DE102013205298B4 (de) | 2013-03-26 | 2013-03-26 | Kolben mit durch Spritzöl gekühltem Kolbenboden |
DE102013205298.7 | 2013-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014154616A1 true WO2014154616A1 (de) | 2014-10-02 |
Family
ID=50389420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/055807 WO2014154616A1 (de) | 2013-03-26 | 2014-03-24 | Kolben mit durch spritzöl gekühltem kolbenboden |
Country Status (5)
Country | Link |
---|---|
US (1) | US9828939B2 (de) |
CN (1) | CN105051358B (de) |
BR (1) | BR112015024223A2 (de) |
DE (1) | DE102013205298B4 (de) |
WO (1) | WO2014154616A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110285143B (zh) * | 2019-06-28 | 2021-04-16 | 潍柴动力股份有限公司 | 一种主轴承轴瓦及安装结构 |
DE202020100567U1 (de) | 2020-02-03 | 2020-04-15 | Mahle International Gmbh | Pleuel und Pleuel-Kolben-Anordnung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1097110A (en) * | 1965-11-15 | 1967-12-29 | Specialloid Ltd | Liquid-cooled piston |
GB1136833A (en) * | 1967-01-07 | 1968-12-18 | Ifa Motorenwerke | Oil spray cooling arrangements for internal combustion engines |
DE2539470A1 (de) * | 1975-09-05 | 1977-03-10 | Daimler Benz Ag | Brennkraftmaschinenkolben |
GB2261717A (en) * | 1991-11-22 | 1993-05-26 | Ford Motor Co | Piston cooling |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE79636C (de) | ||||
DD79636A (de) * | ||||
US1513272A (en) * | 1922-04-06 | 1924-10-28 | Armand V Pourroy | Sheet-metal piston |
US2108194A (en) * | 1935-01-09 | 1938-02-15 | Gen Motors Corp | Piston |
DE1063862B (de) | 1957-04-09 | 1959-08-20 | Heinkel Ag Ernst | Vorrichtung zum Durchschmieren des oberen Pleuelauges bei Schleuderschmierungen |
US4506632A (en) * | 1983-07-28 | 1985-03-26 | Toyota Jidosha Kabushiki Kaisha | Piston assembly with cooling lubricant reservoir defining member engaged to piston pin mounting bosses |
DE3739899A1 (de) * | 1987-11-25 | 1989-06-08 | Elsbett L | Verbesserung des motorischen waermehaushaltes einer verbrennungskraftmaschine und dazugehoeriger zylinderkopf |
DE4135237A1 (de) * | 1991-10-25 | 1993-04-29 | Mak Maschinenbau Krupp | Kolben-pleuel-anordnung |
US6701875B2 (en) * | 2002-05-31 | 2004-03-09 | Cummins Inc. | Internal combustion engine with piston cooling system and piston therefor |
DE10346822A1 (de) * | 2003-10-06 | 2005-04-21 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
DE102004029926B4 (de) * | 2004-06-21 | 2007-09-20 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor |
US20070074695A1 (en) * | 2005-10-04 | 2007-04-05 | Mahle Technology, Inc. | Piston having improved cooling characteristics |
DE102008055911A1 (de) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
US8161934B2 (en) * | 2008-11-05 | 2012-04-24 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
US8146560B2 (en) | 2008-11-05 | 2012-04-03 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
US8065985B2 (en) * | 2009-05-04 | 2011-11-29 | Federal-Mogul Corporation | Piston having a central cooling gallery with a contoured flange |
-
2013
- 2013-03-26 DE DE102013205298.7A patent/DE102013205298B4/de not_active Expired - Fee Related
-
2014
- 2014-03-24 US US14/780,148 patent/US9828939B2/en active Active
- 2014-03-24 WO PCT/EP2014/055807 patent/WO2014154616A1/de active Application Filing
- 2014-03-24 BR BR112015024223A patent/BR112015024223A2/pt not_active Application Discontinuation
- 2014-03-24 CN CN201480017764.XA patent/CN105051358B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1097110A (en) * | 1965-11-15 | 1967-12-29 | Specialloid Ltd | Liquid-cooled piston |
GB1136833A (en) * | 1967-01-07 | 1968-12-18 | Ifa Motorenwerke | Oil spray cooling arrangements for internal combustion engines |
DE2539470A1 (de) * | 1975-09-05 | 1977-03-10 | Daimler Benz Ag | Brennkraftmaschinenkolben |
GB2261717A (en) * | 1991-11-22 | 1993-05-26 | Ford Motor Co | Piston cooling |
Also Published As
Publication number | Publication date |
---|---|
US20160208733A1 (en) | 2016-07-21 |
CN105051358A (zh) | 2015-11-11 |
US9828939B2 (en) | 2017-11-28 |
DE102013205298B4 (de) | 2021-05-12 |
CN105051358B (zh) | 2018-04-27 |
DE102013205298A1 (de) | 2014-10-02 |
BR112015024223A2 (pt) | 2017-07-18 |
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