EP1819922A1 - Piston en deux parties d'un moteur a combustion interne - Google Patents
Piston en deux parties d'un moteur a combustion interneInfo
- Publication number
- EP1819922A1 EP1819922A1 EP05816541A EP05816541A EP1819922A1 EP 1819922 A1 EP1819922 A1 EP 1819922A1 EP 05816541 A EP05816541 A EP 05816541A EP 05816541 A EP05816541 A EP 05816541A EP 1819922 A1 EP1819922 A1 EP 1819922A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- combustion chamber
- base body
- combustion engine
- internal combustion
- 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- Withdrawn
Links
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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
-
- 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
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
-
- 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
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
-
- 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
- F02F3/26—Pistons having combustion chamber in piston head
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to a two-part piston for an internal combustion engine according to the preamble of claim 1.
- a two-part piston with a combustion chamber in the piston crown which consists of an upper part and a base body, the upper part being screwed to the base body.
- the combustion chamber is formed exclusively by the upper part, which is very thin-walled in the area of the combustion chamber, so that the upper part cannot withstand the mechanical stress that is exerted on the piston crown by the pressure prevailing in the combustion chamber.
- the object of the present invention is to avoid this disadvantage of the prior art.
- a mechanically and thermally highly resilient piston is achieved in that the combustion chamber is largely molded into the base body and in that the upper part is designed in a ring shape, so that the combustion pressure essentially acts on the base body, which has great mechanical strength, which means that the mechanical Resilience of the piston is increased.
- the thermal load-bearing capacity of the piston is increased by the fact that the parts of the piston with the highest thermal load, the bowl rim and the top land, are formed by the upper part, which is made of forged aluminum or forged steel.
- a two-part piston for an internal combustion engine in a section along the bent line AA in Fig. 2 and Fig. 2 is a plan view of the bottom of the piston.
- Fig. 1 shows a piston 1 for an internal combustion engine in section along a bent line AA in Fig. 2, resulting in a sectional view consisting of two halves, the left half of which shows a sectional view of the piston 1, which is perpendicular to the longitudinal axis 2 of the Hub bore 3 and lying on the axis 4 of the piston 1 cutting plane, and the right half of which represents a sectional view of the piston 1, which is in a cutting plane offset by 45 °, so that here a second hub bore 3 1 is shown in an oblique section.
- the piston 1 consists of a base body 5 and an upper part 6, the base body 5 and the upper part 6 being connected to one another by means of screws 7 to 12 arranged radially on the outside and evenly distributed over the circumference. See also Fig. 2.
- the base body 5 has, on the underside facing away from the piston crown 13, pin hubs 14 and 14 ', each with a hub bore 3, 3' and shaft elements 15, 15 'connecting the pin hubs 14, 14' to one another.
- a combustion chamber 16 is formed in the piston crown 13.
- the base body 5 of the piston 1 has 13 annular grooves 17 and 18 on its radial outer side near the piston head 13.
- the upper part 6 is essentially ring-shaped and is arranged on the base body 5 such that it enlarges the combustion chamber 16 formed in the base body 5 in the manner of a collar 19 on the piston bottom side and limits it radially outward, the inner radius of the collar 19 toward the top of the piston decreases so that there is an undercut 20 in the combustion chamber 16.
- a sealing element 32 can be arranged between the upper part 6 and the base body 5.
- the cooling channel 21 is connected to the piston interior 22 via oil inlet and oil outlet openings 27.
- the screws 7 to 12 connecting the upper part 6 to the base body 5 are guided through the cone-shaped bores 23, 23 'of the upper part 6 on the piston head side and are partly screwed into blind holes with an internal thread 24 and partly into through holes 25 with an internal thread.
- the screws 7 to 12 are guided through the cooling channel 21, which saves space, particularly in the case of smaller pistons.
- the base body 5 is made of steel or aluminum, with a blank first being produced by forging or casting. Subsequently, the base body 5 is finished from the blank by means of a machining manufacturing process (turning, milling).
- the upper part 6 is made of steel or aluminum in the forging process, whereby a blank is also first produced, which is finished by means of a machining production process. This ensures that the upper part 6 has sufficient strength so that it can perform the function of a wear-resistant ring carrier after a groove 26 has been worked into its radial outside for a compression ring (not shown in the figures).
- the piston 1 according to the invention with the annular upper part 6 and with the combustion chamber 16 largely molded into the base body 5 has the advantage, on the one hand, that the combustion pressure essentially acts on the base body 5, which has great mechanical strength and resilience compared to that prevailing in the combustion chamber Has pressure.
- the upper part 6 is inexpensive to manufacture because of its simple ring shape.
- the trough edge and the top land, which are the parts of the piston 1 which are subjected to the greatest thermal stress are formed by the upper part 6, which is produced in the forging process and is thus highly resilient, so that the result is an overall thermally highly resilient piston.
- Fig. 2 shows a plan view of the piston crown 13, which illustrates the distribution of the screws 7 to 12.
- the combustion chamber 16 and valve pockets 28 to 31 incorporated into the piston crown 13 can also be seen,
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
L'invention concerne un piston en deux parties (1 ) destiné à un moteur à combustion interne et pourvu d'une chambre à combustion (16) dans le fond de piston (13). Ce piston comprend un corps de base (5) et un élément supérieur (6) vissé au corps de base (5). La partie inférieure de la chambre de combustion (16) est formée dans le corps de base (5). La partie supérieure (6) est annulaire et la partie supérieure (6) agrandit la chambre de combustion (16) à la manière d'un col (19) côté fond de piston et la limite radialement vers l'extérieur. En conséquence, la pression de combustion agit principalement sur le corps de base (5) qui a une grande résistance mécanique et une grande charge admissible vis-à-vis de la pression régnant dans la chambre de combustion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004057625A DE102004057625A1 (de) | 2004-11-30 | 2004-11-30 | Zweiteiliger Kolben für einen Verbrennungsmotor |
PCT/DE2005/002144 WO2006058525A1 (fr) | 2004-11-30 | 2005-11-28 | Piston en deux parties d'un moteur a combustion interne |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1819922A1 true EP1819922A1 (fr) | 2007-08-22 |
Family
ID=35945807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05816541A Withdrawn EP1819922A1 (fr) | 2004-11-30 | 2005-11-28 | Piston en deux parties d'un moteur a combustion interne |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080121102A1 (fr) |
EP (1) | EP1819922A1 (fr) |
JP (1) | JP2008522089A (fr) |
KR (1) | KR20070085580A (fr) |
CN (1) | CN101189424A (fr) |
BR (1) | BRPI0518684A2 (fr) |
DE (1) | DE102004057625A1 (fr) |
WO (1) | WO2006058525A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007050213A1 (de) * | 2007-10-20 | 2009-04-23 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102007061601A1 (de) * | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
US8807109B2 (en) * | 2009-11-06 | 2014-08-19 | Federal-Mogul Corporation | Steel piston with cooling gallery and method of construction thereof |
US9970384B2 (en) | 2009-11-06 | 2018-05-15 | Federal-Mogul Llc | Steel piston with cooling gallery and method of construction thereof |
DE102010015568A1 (de) * | 2010-04-19 | 2011-10-20 | Ks Kolbenschmidt Gmbh | Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen |
DE102010053925A1 (de) * | 2010-12-09 | 2012-06-14 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102011101005A1 (de) * | 2011-04-20 | 2012-10-25 | Daimler Ag | Kolben für eine Hubkolben-Brennkraftmaschine |
US20130025561A1 (en) * | 2011-07-28 | 2013-01-31 | Dieter Gabriel | Bowl rim and root protection for aluminum pistons |
EP2971717B1 (fr) | 2013-03-13 | 2017-05-10 | Federal-Mogul Corporation | Piston et son procédé de construction |
US10151269B2 (en) * | 2016-06-16 | 2018-12-11 | GM Global Technology Operations LLC | Mass efficient piston |
ES2800154T3 (es) * | 2017-10-10 | 2020-12-28 | Lombardini Srl | Pistón y procedimiento de fabricación del mismo |
US20190136792A1 (en) * | 2017-11-09 | 2019-05-09 | GM Global Technology Operations LLC | Bimetallic piston heads including thermal insulation coatings |
CN110469421A (zh) * | 2018-05-11 | 2019-11-19 | 强莉莉 | 一种组合式活塞 |
CN113202654A (zh) * | 2021-05-18 | 2021-08-03 | 大昌汽车部件(苏州)有限公司 | 一种组合式发动机活塞及其锻造工艺 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7633479U1 (de) * | 1976-10-26 | 1983-10-27 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Isolierter kolbenboden |
DE3631279A1 (de) * | 1986-09-13 | 1988-03-24 | Kloeckner Humboldt Deutz Ag | Kolben fuer eine verbrennungskraftmaschine |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE133455C (fr) * | ||||
US2720193A (en) * | 1950-03-24 | 1955-10-11 | Maybach Karl | Oil cooled piston for high speed internal combustion engines |
FR2142146A5 (fr) * | 1971-06-14 | 1973-01-26 | Bechir Roger | |
US3923032A (en) * | 1974-04-22 | 1975-12-02 | Karl E Studenroth | Chambered piston for an internal combustion engine |
YU226580A (en) * | 1979-09-08 | 1983-09-30 | Massey Ferguson Perkins Ltd | Piston for an internal combustion engine |
US4548127A (en) * | 1981-05-08 | 1985-10-22 | Dunn Stephen J | Piston for internal combustion engine |
JPS60164648U (ja) * | 1984-04-09 | 1985-11-01 | 三菱重工業株式会社 | 組立型断熱ピストン |
GB8413800D0 (en) * | 1984-05-30 | 1984-07-04 | Ae Plc | Manufacture of pistons |
DE3625492A1 (de) * | 1986-07-28 | 1988-02-04 | Kloeckner Humboldt Deutz Ag | Mehrteiliger kolben fuer eine brennkraftmaschine |
JPS6357344U (fr) * | 1986-09-30 | 1988-04-16 | ||
DE3637196A1 (de) * | 1986-10-31 | 1988-05-19 | Mtu Friedrichshafen Gmbh | Oelgekuehlter kolben mit einer brennmulde fuer eine verbrennungskraftmaschine |
US4932314A (en) * | 1988-11-14 | 1990-06-12 | Baris Scott L | Segmented piston |
US4898135A (en) * | 1989-02-16 | 1990-02-06 | Sonex Research, Inc. | Piston and process for achieving controlled ignition and combustion of hydrocarbon fuels in internal combustion engines by generation and management of fuel radical species |
US5322042A (en) * | 1992-06-17 | 1994-06-21 | Sonex Research, Inc. | Combustion chamber for internal combustion engine and process of combustion using fuel radical species |
DE4446726A1 (de) * | 1994-12-24 | 1996-06-27 | Mahle Gmbh | Verfahren zur Herstellung eines einteiligen Kühlkanalkolbens |
JP2001107803A (ja) * | 1999-10-08 | 2001-04-17 | Riken Tanzou Kk | 内燃機関ピストンの製造方法 |
US6487773B2 (en) * | 2001-03-23 | 2002-12-03 | Mahle Gmbh | Method of making one-piece piston |
DE10244511A1 (de) * | 2002-09-25 | 2004-04-15 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
DE10244513A1 (de) * | 2002-09-25 | 2004-04-08 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung |
-
2004
- 2004-11-30 DE DE102004057625A patent/DE102004057625A1/de not_active Withdrawn
-
2005
- 2005-11-28 CN CNA2005800410467A patent/CN101189424A/zh active Pending
- 2005-11-28 KR KR1020077012229A patent/KR20070085580A/ko not_active Application Discontinuation
- 2005-11-28 US US11/791,807 patent/US20080121102A1/en not_active Abandoned
- 2005-11-28 EP EP05816541A patent/EP1819922A1/fr not_active Withdrawn
- 2005-11-28 BR BRPI0518684-6A patent/BRPI0518684A2/pt not_active IP Right Cessation
- 2005-11-28 WO PCT/DE2005/002144 patent/WO2006058525A1/fr active Application Filing
- 2005-11-28 JP JP2007543695A patent/JP2008522089A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7633479U1 (de) * | 1976-10-26 | 1983-10-27 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Isolierter kolbenboden |
DE3631279A1 (de) * | 1986-09-13 | 1988-03-24 | Kloeckner Humboldt Deutz Ag | Kolben fuer eine verbrennungskraftmaschine |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006058525A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004057625A1 (de) | 2006-06-01 |
JP2008522089A (ja) | 2008-06-26 |
KR20070085580A (ko) | 2007-08-27 |
WO2006058525A1 (fr) | 2006-06-08 |
CN101189424A (zh) | 2008-05-28 |
BRPI0518684A2 (pt) | 2008-12-02 |
US20080121102A1 (en) | 2008-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1819922A1 (fr) | Piston en deux parties d'un moteur a combustion interne | |
EP1920152B1 (fr) | Piston en deux parties pour moteur a combustion interne | |
EP2603686B1 (fr) | Piston pour un moteur à combustion interne | |
EP1761697A1 (fr) | Piston compose conçu pour un moteur a combustion interne | |
WO2007068222A1 (fr) | Piston en deux pieces pour moteur a combustion interne | |
EP1920151A1 (fr) | Piston de construction legere | |
EP1546536B1 (fr) | Piston monobloc a conduite de refroidissement pour moteur a combustion interne | |
WO2006058522A1 (fr) | Piston d'un moteur a combustion interne | |
EP1636475B1 (fr) | Piston de moteur a combustion interne | |
DE102005042003A1 (de) | Gebauter, flüssigkeitsgekühlter Kolben | |
EP2342441A1 (fr) | Piston avec canal de refroidissement pour un moteur à combustion interne, avec un élément de fermeture qui ferme le canal de refroidissement | |
EP1664515A1 (fr) | Piston pour un moteur a combustion interne | |
WO2004103634A2 (fr) | Procede de production d'un piston monobloc pour un moteur a combustion | |
DE10325914B4 (de) | Kolben für einen Verbrennungsmotor | |
WO2017025608A1 (fr) | Piston pour moteur à combustion interne | |
WO2005024217A1 (fr) | Piston pour moteur a combustion | |
DE102005037205A1 (de) | Zweiteiliger Ölabstreifring für Verbrennungsmotoren | |
WO2013004218A1 (fr) | Piston pour un moteur à combustion interne | |
DE102019132604A1 (de) | Kurbelwellenanordnung mit schmierungsschema | |
WO2016173690A1 (fr) | Piston pour un moteur à combustion interne à pistons alternatifs | |
DE102004019010A1 (de) | Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors | |
EP2002104B1 (fr) | Pièce supérieure d'un piston assemblé | |
EP2923122B1 (fr) | Piston pour moteur à combustion interne | |
DE102007031400A1 (de) | Einteiliger Kühlkanalkolben mit zwei miteinander verschraubten Kolbenteilen | |
WO2021018683A1 (fr) | Piston avec rainure annulaire de fixation dans l'alésage de broche pour un moteur à combustion interne |
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 |
|
17P | Request for examination filed |
Effective date: 20070618 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20160108 |
|
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: 20160519 |