EP2005040A1 - Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrier - Google Patents
Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrierInfo
- Publication number
- EP2005040A1 EP2005040A1 EP07724037A EP07724037A EP2005040A1 EP 2005040 A1 EP2005040 A1 EP 2005040A1 EP 07724037 A EP07724037 A EP 07724037A EP 07724037 A EP07724037 A EP 07724037A EP 2005040 A1 EP2005040 A1 EP 2005040A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- ring
- ring carrier
- internal combustion
- carrier
- 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- Withdrawn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
- 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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/22—Rings for preventing wear of grooves or like seatings
Definitions
- Piston for an internal combustion engine with two annular grooves, wherein an annular groove has a ring carrier
- the invention relates to a piston for an internal combustion engine, comprising a piston upper part having a ring field with a plurality of annular grooves and a piston lower part, according to the features of the preamble of claim 1.
- the invention is therefore based on the object to provide a piston for an internal combustion engine, which is improved over the prior art and in particular leads to a friction loss, optimized fatigue strength and to a weight and cost savings.
- the ring field has exactly two annular grooves and at least the upper annular groove comprises a ring carrier. Due to the presence of only two annular grooves and the gas sealing or oil scraper rings used there, the friction loss is reduced, since less surface of the oil scraper rings runs on the cylinder inner wall of the internal combustion engine. In addition, the weight of the entire piston is reduced, as compared to the known prior art, a piston ring is missing.
- the upper, the combustion chamber of the engine facing annular groove has a ring carrier, which may consist of the same or a different material as the material of the piston upper part.
- a ring carrier which may consist of the same or a different material as the material of the piston upper part.
- the ring carrier is made of a steel material or Niresist, if the upper piston part consists of a lightweight material.
- the lower annular groove comprises a ring carrier.
- the two annular grooves each comprise a ring carrier, whereby the Increased strength and the production cost is reduced, further can also account for a machining for introducing the annular grooves.
- At least one annular carrier of the upper annular groove but in particular both ring carriers are completely surrounded by the material of the piston upper part.
- This has the advantage of increased strength, since the ring carrier completely (with the exception of the outwardly facing surface in which the grooves are arranged, are surrounded by the material of the piston upper part and thus can sufficiently support.
- the at least one ring carrier is alfiniert.
- This Alfin für on the ring carrier in those areas in which the ring carrier is surrounded by the material of the piston upper part has the advantage that thereby the connection between the ring carrier and the surrounding material of the piston upper part is improved, whereby the strength is additionally increased.
- at least the upper piston part, but in particular the entire piston consists of a light metal material and the ring carrier made of a steel material.
- At least the piston top, in particular the entire piston is made of a light metal material (such as aluminum), while the ring carrier is made of a steel material.
- the same material pairings upper piston part and ring carrier made of steel or piston upper part and ring carrier made of aluminum are not excluded.
- the invention provides a piston with only two annular grooves, preferably made of a light metal material for diesel or gasoline internal combustion engines available, wherein at least the upper annular groove is provided with a ring carrier, thereby advantageously friction reduction, weight savings, cost savings due to material and manufacturing costs, fatigue increase and reduced space requirements are given.
- An embodiment of the invention is shown in two views in Figures 1 and 2, wherein a piston is designated by the reference numeral 1.
- the piston 1 consists of a piston upper part 2 and a lower piston part 3, which can be manufactured separately from one another and subsequently joined together or which together form an integral component (piston blank).
- the piston upper part 2 has a ring field 4, wherein depending on the design of the piston 1 coaxially within the ring field 4, a combustion bowl can be present, but not necessarily.
- the piston lower part 3 has, in a manner known per se, piston stems with which the piston 1 is guided in the cylinder of the internal combustion engine.
- the piston shafts comprise bolt holes, in which a piston pin can be used for connection to a connecting rod.
- the ring field 4 exactly two annular grooves, ie a lower annular groove 5 and an upper annular groove 6, on, wherein at least the upper annular groove 6 comprises a ring carrier 7.
- the ring carrier 7 is a preferably one-piece component, which is used in casting the piston blank in a mold, is fixed in position at the desired position, in which case then the mold is filled with casting melt, and the ring carrier 7 is completely surrounded by the casting melt. If the ring carrier 7 consists of a steel material and the casting melt of a light metal material, preferably the ring carrier 7 is alfiniert before insertion into the casting mold. In the same way, a ring carrier for the lower annular groove 5 can be used.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006016630 | 2006-04-08 | ||
PCT/EP2007/003096 WO2007115790A1 (en) | 2006-04-08 | 2007-04-05 | Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrier |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2005040A1 true EP2005040A1 (en) | 2008-12-24 |
Family
ID=38267572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07724037A Withdrawn EP2005040A1 (en) | 2006-04-08 | 2007-04-05 | Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrier |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090173309A1 (en) |
EP (1) | EP2005040A1 (en) |
JP (1) | JP2009533589A (en) |
KR (1) | KR20090005085A (en) |
CN (1) | CN101460769A (en) |
WO (1) | WO2007115790A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009153276A1 (en) | 2008-06-20 | 2009-12-23 | Basf Se | Cyclic phosphazene compounds and use thereof in organic light emitting diodes |
US10753310B2 (en) | 2012-02-10 | 2020-08-25 | Tenneco Inc. | Piston with enhanced cooling gallery |
BR202012009964U2 (en) * | 2012-04-27 | 2018-12-11 | Perci Erbe | improvement in internal combustion engine piston ring positioning |
KR102161869B1 (en) | 2013-03-13 | 2020-10-05 | 테네코 인코퍼레이티드 | Piston and method of construction thereof |
US20170057023A1 (en) * | 2015-08-26 | 2017-03-02 | Caterpillar Inc. | Piston and Method of Piston Remanufacturing |
CN114354423B (en) * | 2021-12-30 | 2024-04-16 | 大连海事大学 | Piston ring groove-piston ring friction and wear testing machine and testing method |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB460420A (en) * | 1935-07-29 | 1937-01-27 | Brandenburgische Motorenwerke | Improvements in and relating to lining rings for piston ring grooves |
US2396730A (en) * | 1941-10-24 | 1946-03-19 | Al Fin Corp | Coating metal |
US2716581A (en) * | 1951-10-13 | 1955-08-30 | Thompson Prod Inc | Piston |
US2849790A (en) * | 1954-02-08 | 1958-09-02 | Fairchild Engine & Airplane | Joints between iron and light metals |
CH375951A (en) * | 1958-05-19 | 1964-03-15 | California Research Corp | Iron metal piston with piston ring |
DE2743512A1 (en) * | 1977-08-27 | 1979-03-01 | Eugen Stump | IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer |
US4282837A (en) * | 1979-09-05 | 1981-08-11 | General Motors Corporation | Two-cycle diesel engine with piston ring stabilizing accumulator volume |
IT1183114B (en) * | 1985-01-11 | 1987-10-05 | Ass Eng Italia | ALUMINUM OR ALUMINUM ALLOY PISTON FOR INTERNAL COMBUSTION ENGINES |
JPH0378553A (en) * | 1989-08-22 | 1991-04-03 | Riken Corp | Aluminum alloy-made piston for internal combustion engine |
JP2659636B2 (en) * | 1991-09-10 | 1997-09-30 | 日野自動車工業株式会社 | Method of forming hollow ring bearing for piston for diesel engine |
JPH05306650A (en) * | 1992-04-30 | 1993-11-19 | Unisia Jecs Corp | Piston of aluminum alloy for internal combustion engine |
JPH07109953A (en) * | 1993-10-12 | 1995-04-25 | Yamaha Motor Co Ltd | Piston of intra-cylinder fuel injection type two-cycle engine |
JPH07301148A (en) * | 1994-04-30 | 1995-11-14 | Isuzu Motors Ltd | Piston for internal combustion engine |
DE19537848A1 (en) * | 1995-10-11 | 1997-04-17 | Mahle Gmbh | Reinforcement part, the base material of which is austenitic cast iron |
JPH09111365A (en) * | 1995-10-16 | 1997-04-28 | Toyota Motor Corp | Sliding material, piston, and their production |
JP2000202612A (en) * | 1999-01-14 | 2000-07-25 | Riken Corp | Aluminum alloy-made piston |
US6484790B1 (en) * | 1999-08-31 | 2002-11-26 | Cummins Inc. | Metallurgical bonding of coated inserts within metal castings |
DE10134293B4 (en) * | 2001-07-14 | 2009-06-04 | Mahle Gmbh | Cooled ring carrier for a piston |
JP4169740B2 (en) * | 2002-06-25 | 2008-10-22 | マーレ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Method for manufacturing a cooled ring support |
DE102005047035B3 (en) * | 2005-09-30 | 2007-04-19 | Federal-Mogul Nürnberg GmbH | A method of manufacturing a piston for an internal combustion engine and piston produced thereafter |
-
2007
- 2007-04-05 WO PCT/EP2007/003096 patent/WO2007115790A1/en active Application Filing
- 2007-04-05 EP EP07724037A patent/EP2005040A1/en not_active Withdrawn
- 2007-04-05 CN CNA2007800126756A patent/CN101460769A/en active Pending
- 2007-04-05 US US12/296,251 patent/US20090173309A1/en not_active Abandoned
- 2007-04-05 KR KR1020087026311A patent/KR20090005085A/en not_active Application Discontinuation
- 2007-04-05 JP JP2009504619A patent/JP2009533589A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2007115790A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20090173309A1 (en) | 2009-07-09 |
KR20090005085A (en) | 2009-01-12 |
CN101460769A (en) | 2009-06-17 |
WO2007115790A1 (en) | 2007-10-18 |
JP2009533589A (en) | 2009-09-17 |
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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: 20080827 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SIKORSKY, WILLI Inventor name: ROLOFF, ALBRECHT Inventor name: DIE ANDERE ERFINDER HABEN AUF IHRE NENNUNG VERZICH Inventor name: OTTLICZKY, EMMERICH |
|
17Q | First examination report despatched |
Effective date: 20090126 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROLOFF, ALBRECHT Inventor name: OTTLICZKY, EMMERICH Inventor name: SIKORSKY, WILLI Inventor name: DIE ANDERE ERFINDER HABEN AUF IHRE NENNUNG VERZICH |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20130112 |