WO2013170947A1 - Piston de moteur à combustion interne - Google Patents
Piston de moteur à combustion interne Download PDFInfo
- Publication number
- WO2013170947A1 WO2013170947A1 PCT/EP2013/001406 EP2013001406W WO2013170947A1 WO 2013170947 A1 WO2013170947 A1 WO 2013170947A1 EP 2013001406 W EP2013001406 W EP 2013001406W WO 2013170947 A1 WO2013170947 A1 WO 2013170947A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- connecting rod
- spring element
- sliding shoe
- shoe
- 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
- 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
- F01P3/10—Cooling by flow of coolant through pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
-
- 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
- F02F3/225—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid the liquid being directed into blind holes
-
- 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
Definitions
- the invention relates to a piston of an internal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a sliding block for such a piston of an internal combustion engine according to the preamble of claim 8.
- a piston of an internal combustion engine which comprises a piston upper part and a lower piston part, which are preferably screwed together.
- a piston pin is mounted, wherein the piston pin is used to connect the piston to a connecting rod of the internal combustion engine.
- the piston according to DE 35 18 721 C2 is oil-cooled, wherein on the one hand an inner cooling space for cooling oil and on the other hand an outer cooling space for cooling oil is formed between the piston upper part and the piston lower part, and wherein the inner cooling space is connected to the outer cooling space via at least one Matterleitbohrung.
- a feed bore for cooling oil is integrated into the connecting rod according to this prior art, wherein the cooling oil, starting from the connecting rod in the inner cooling space can be converted using a two-piece cooling oil supply.
- a first, neck-like part of the two-part cooling oil guide sleeve is fixed immovably in the lower piston part of the piston according to DE 35 18 721 C2.
- a bore 7 is introduced into the sliding block 4, which penetrates both the neck-like end 5 and the funnel-like end 6 of the sliding shoe 7 and widens like a funnel in the funnel-like end 6.
- a guide surface 8 for the sliding shoe 4 is formed between the sliding shoe 4 and the piston lower part 2, namely in the region of the neck-like end 5 of the sliding shoe 4 adjacent to the funnel-like end 6 thereof.
- a spring element 9, which can be pressed the sliding shoe 4 in a connecting rod, not shown in Fig. 1, is supported on the one hand on the shoe 4 and on the other hand on the lower housing part 2, wherein seen in the axial direction of the piston or the shoe 4 this spring element 9 in series to the guide surface 8 is arranged.
- the so-called compression height is a characteristic parameter, wherein the compression height corresponds to the distance between the axis of the piston pin and an upper edge of the piston.
- the overall height of an internal combustion engine is determined inter alia by this compression height of the or each piston of the internal combustion engine.
- Another characteristic parameter of a piston of an internal combustion engine which has an influence on the overall height of the internal combustion engine, is a so-called piston-chamber depth of a piston recess formed in the region of the piston upper part. Relatively deep piston recesses can improve the combustion in the cylinder of the respective internal combustion engine in which the respective piston is used. The deeper a piston recess is made, the higher, however, the compression height and thus height of the engine. Proceeding from this, the present invention has the object to provide a novel piston of an internal combustion engine and a novel sliding block for such a piston.
- the spring element extends in the axial direction of the piston or sliding shoe at least in sections parallel to the guide surface for the one-piece sliding shoe.
- the guide surface for the one-piece sliding shoe surrounds the spring element radially outside at least in sections.
- the one-piece shoe has a neck-like end and a funnel-like end, wherein the funnel-like end is pressed by the spring element against the connecting rod of the connecting rod, and wherein starting from the funnel-like end at least in sections radially outward around the neck-like end a projection with Radial distance to the neck-like end extends.
- the guide surface for the sliding block is formed between the projection and the piston lower part.
- the spring element extends into a space formed between the projection and the neck-like end.
- Fig. 1 a section of a known from the prior art
- FIG. 2 shows a first section of a piston according to the invention in the region of a one-piece sliding shoe
- FIG. 3 shows a second detail of a piston according to the invention in FIG.
- Fig. 4 the shoe of Fig. 2 in solo view.
- the present invention relates to an oil-cooled piston of an internal combustion engine, in particular designed as a diesel engine or gas engine or diesel-gas engine engine, such as a marine diesel engine.
- a piston is also referred to as a plunger.
- FIGS. 2 and 3 each show a detail of a piston according to the invention of an internal combustion engine, wherein the piston comprises a piston upper part 10 and a piston lower part 11.
- the upper piston part 10 and the lower piston part 11 are preferably made of a light metal, steel or nodular cast iron.
- the piston upper part 10 and the lower piston part 11 are supported on one another and are preferably fastened to one another via fastening means designed as expansion screws.
- a piston pin 12 is mounted, wherein the piston pin 12 of the connection of the piston to a connecting rod 13 of the internal combustion engine is used.
- a so-called Pleuelkopf 14 is shown in Fig. 2.
- an inner cooling chamber 15 and, on the other hand, an outer cooling chamber 16 for cooling oil are formed, wherein the inner cooling chamber 15 is connected to the outer cooling chamber 16 according to FIG. 2 via transfer bores 17.
- the cooling oil is the inner cooling chamber 15 via a bore 18 can be fed, which extends through the connecting rod 13 and also by the connecting rod 14, wherein the cooling oil from the connecting rod 13 in the inner cooling chamber 15 by means of a shoe 19 can be transferred, in the lower piston part 11 is movably mounted.
- the sliding shoe 19 movably mounted in the lower piston part 11 is designed as a one-piece sliding shoe 19 and is pressed against the connecting rod 14 of the connecting rod 13 by a spring element 20 for sealing purposes.
- a guide surface 21 is formed, which serves to guide the piston base 11 movably mounted, one-piece slide shoe 19.
- the spring element 20 extends in the axial direction of the piston and the sliding block 19 at least in sections parallel to the guide surface 21 for the one-piece sliding shoe 19.
- a reduced overall height of the sliding shoe 19 can be used to reduce the so-called compression height of the piston, ie the distance between the axis of the piston pin 12 and an upper edge of the piston.
- a depth of a piston recess 22, which is provided by the piston upper part 10 can thereby be increased at a constant compression height in order to positively influence the combustion of the internal combustion engine.
- the guide surface 21 for the one-piece sliding shoe 19 surrounds, at least in sections, the spring element 20 radially outward. Accordingly, the spring element 20 is positioned radially within the guide surface 21 for the sliding shoe 19 as viewed in the radial direction of the piston or of the sliding shoe 19.
- the sliding shoe 19 is used to transfer cooling oil starting from the connecting rod 13 into the inner cooling space 15, with a bore 22 extending in the axial direction through the sliding shoe 19 for this purpose.
- the one-piece slide shoe 19 has a first, neck-like end 23 and a second funnel-like end 24, wherein the funnel-like end 24 of the slide shoe 19 is pressed by the spring element 20 sealingly against the connecting rod 14 of the connecting rod 13.
- the second, funnel-like end 24 extends at least partially radially outward around the neck-like end 23 around a projection 25 having a radial distance from the neck-like end 23, so that between the radially inner, neck-like end 23 and the radially outer projection 25th a free space 26 is formed.
- the guide surface 21 for the sliding shoe 19 is formed between this projection 25 and the lower piston part 11.
- the present invention further relates to the shown in Fig. 4 in solo view shoe 19 for a piston of an internal combustion engine. To avoid unnecessary repetition, reference is made to the above statements with regard to details of the one-piece sliding shoe 9.
- a piston recess 22 can be made deeper. Furthermore, with the same depth of the piston recess 22, the compression height of the piston can be reduced. In addition, both effects can be used combinatorial, so on the one hand an increase in the piston bowl depth and on the other hand, a reduction in the compression height of the piston.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380025298.5A CN104302902B (zh) | 2012-05-15 | 2013-05-14 | 内燃机的活塞 |
KR1020147034959A KR101687090B1 (ko) | 2012-05-15 | 2013-05-14 | 내연기관의 피스톤 |
JP2015503787A JP5964497B2 (ja) | 2012-05-15 | 2013-05-14 | 内燃機関のピストン |
FI20145895A FI126961B (fi) | 2012-05-15 | 2014-10-14 | Polttomoottorikoneen mäntä |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012208090.2A DE102012208090B4 (de) | 2012-05-15 | 2012-05-15 | Kolben einer Brennkraftmaschine |
DE102012208090.2 | 2012-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013170947A1 true WO2013170947A1 (fr) | 2013-11-21 |
Family
ID=48463918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/001406 WO2013170947A1 (fr) | 2012-05-15 | 2013-05-14 | Piston de moteur à combustion interne |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP5964497B2 (fr) |
KR (1) | KR101687090B1 (fr) |
CN (1) | CN104302902B (fr) |
DE (1) | DE102012208090B4 (fr) |
FI (1) | FI126961B (fr) |
WO (1) | WO2013170947A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016202643A1 (de) | 2016-02-22 | 2017-08-24 | Mahle International Gmbh | Kolben einer Brennkraftmaschine |
DE102018203417A1 (de) | 2018-03-07 | 2019-09-12 | Mahle Lnternational Gmbh | Kolbenanordnung einer Brennkraftmaschine |
DE102019122877B4 (de) * | 2019-08-27 | 2021-08-19 | Man Energy Solutions Se | Kolben einer Brennkraftmaschine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2241629A (en) * | 1940-04-20 | 1941-05-13 | Gen Motors Corp | Oil cooled piston |
FR1524454A (fr) * | 1967-04-19 | 1968-05-10 | Moteur Moderne Le | Piston refroidi de moteur diesel |
DE3518721C2 (fr) | 1985-05-24 | 1990-10-18 | Man B & W Diesel Ag, 8900 Augsburg, De | |
US20030154855A1 (en) * | 2000-05-05 | 2003-08-21 | Dieter Messmer | Combustion engine with a built-up piston |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1669290A (en) * | 1927-03-04 | 1928-05-08 | Worthington Pump & Mach Corp | Piston |
GB702002A (en) * | 1951-06-27 | 1954-01-06 | Crossley Brothers Ltd | Improvements relating to the pistons of internal combustion engines |
GB737714A (en) | 1953-05-16 | 1955-09-28 | British Leyland Motor Corp | Cooling of internal combustion engine pistons |
GB1120206A (en) * | 1965-07-09 | 1968-07-17 | Wellworthy Ltd | Improvements in or relating to pistons for internal combustion engines |
US3450113A (en) * | 1967-12-08 | 1969-06-17 | Continental Aviat & Eng Corp | Valve construction for variable compression ratio piston |
SE7712947L (sv) * | 1976-11-18 | 1978-05-19 | Nat Res Dev | Anordning vid forbrenningsmotorer |
FR2575227B1 (fr) * | 1984-12-20 | 1988-12-23 | Semt | Piston a structure allegee, notamment pour un moteur a combustion interne |
DE3702694C1 (en) * | 1987-01-30 | 1988-04-21 | Mahle Gmbh | Oil-cooled piston for internal combustion engines, especially for diesel engines |
DE4018252A1 (de) * | 1990-06-07 | 1991-12-12 | Man B & W Diesel Ag | Oelgekuehlter kolben |
DE10063568A1 (de) * | 2000-12-20 | 2002-07-04 | Mahle Gmbh | Kühlkanalkolben für einen Dieselmotor mit Direkteinspritzung mit einem Kolbendurchmesser von 100 mm |
WO2007068222A1 (fr) * | 2005-12-17 | 2007-06-21 | Mahle International Gmbh | Piston en deux pieces pour moteur a combustion interne |
JP4624373B2 (ja) * | 2007-03-20 | 2011-02-02 | 三井造船株式会社 | 内燃機関のピストン冷却金物 |
-
2012
- 2012-05-15 DE DE102012208090.2A patent/DE102012208090B4/de active Active
-
2013
- 2013-05-14 KR KR1020147034959A patent/KR101687090B1/ko active IP Right Grant
- 2013-05-14 WO PCT/EP2013/001406 patent/WO2013170947A1/fr active Application Filing
- 2013-05-14 CN CN201380025298.5A patent/CN104302902B/zh active Active
- 2013-05-14 JP JP2015503787A patent/JP5964497B2/ja active Active
-
2014
- 2014-10-14 FI FI20145895A patent/FI126961B/fi active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2241629A (en) * | 1940-04-20 | 1941-05-13 | Gen Motors Corp | Oil cooled piston |
FR1524454A (fr) * | 1967-04-19 | 1968-05-10 | Moteur Moderne Le | Piston refroidi de moteur diesel |
DE3518721C2 (fr) | 1985-05-24 | 1990-10-18 | Man B & W Diesel Ag, 8900 Augsburg, De | |
US20030154855A1 (en) * | 2000-05-05 | 2003-08-21 | Dieter Messmer | Combustion engine with a built-up piston |
Also Published As
Publication number | Publication date |
---|---|
JP2015514182A (ja) | 2015-05-18 |
JP5964497B2 (ja) | 2016-08-03 |
DE102012208090A1 (de) | 2013-11-21 |
CN104302902A (zh) | 2015-01-21 |
DE102012208090B4 (de) | 2022-03-24 |
FI20145895A (fi) | 2014-10-14 |
FI126961B (fi) | 2017-08-31 |
KR20150013770A (ko) | 2015-02-05 |
CN104302902B (zh) | 2017-08-25 |
KR101687090B1 (ko) | 2016-12-15 |
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