EP3821116A1 - Kolben für einen verbrennungsmotor - Google Patents
Kolben für einen verbrennungsmotorInfo
- Publication number
- EP3821116A1 EP3821116A1 EP19737736.9A EP19737736A EP3821116A1 EP 3821116 A1 EP3821116 A1 EP 3821116A1 EP 19737736 A EP19737736 A EP 19737736A EP 3821116 A1 EP3821116 A1 EP 3821116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- recess
- piston
- lower edge
- piston according
- 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- Withdrawn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
- F16J9/20—Rings with special cross-section; Oil-scraping rings
- F16J9/206—One-piece oil-scraping rings
-
- 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
- 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
- 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
- the invention relates to a piston for a
- Pistons for internal combustion engines usually have
- an oil scraper ring which is located on the cylinder wall
- DE 10 2005 041 908 A1 describes and has an upper, that is closer to the piston head edge, which is provided with a smaller diameter than the lower edge of the recess. This reduction in diameter at the
- the invention has for its object to a piston for an internal combustion engine
- Oil scraper ring is guaranteed.
- this has a groove for one
- Oil scraper ring and a recess between this groove and at least one shaft wall is characterized in that the lower flank or edge of the groove closer to the shaft wall has a larger diameter than a lower edge of the recess.
- groove for the oil control ring that is located closer to the piston crown, has at least one, typically two ring grooves for a compression ring.
- such grooves are subordinate to the present invention and the groove for the oil control ring, typically the lowest ring groove, is therefore made for simplicity
- the depression mentioned can also be referred to as a backward rotation or also as a groove and is cylindrical in the region of at least one shaft wall, preferably both shaft walls, in other words essentially constant over the circumference. This can also in
- the lower groove flank has a comparatively large diameter with respect to the piston stroke axis, in particular a diameter that is larger than that the lower edge of the depression. Furthermore, the diameter of the lower edge of the groove can be essentially the same to all edges of the compression ring grooves.
- the geometry according to the invention also ensures good lubrication in the area of the piston skirt.
- the upper edge of the recess has a substantially same diameter as the lower edge of the annular groove. There is thus an essentially cylindrical surface between the depression and the groove
- a deepest point of the depression can be closer to the upper than to the lower edge of the depression.
- At least one hole is provided, both the lower edge of the groove and the upper edge of the recess
- this extends at least to the bottom of the annular groove in order to always ensure that there is a free flow cross section for the oil to be removed.
- Depression is made deeper than the grooves, so that in this case it would be preferred that the bore extends at least to the bottom of the depression, it is preferred that the groove is made deeper than the depression. This ensures good guidance of the oil control ring, and even a less deep recess can do the above
- the preferred embodiment of the bore goes at least to the bottom of the groove.
- Fig. 1 shows a partial section through the invention
- Fig. 2 is a perspective view of part of the
- the piston 10 has an annular field 12 with two compression ring grooves 14 and a groove 16 for an oil control ring, which is not shown. Underneath, that is to say further from the piston crown (in the figure above), there is a recess 18 which is less distant from the groove 16 in the direction of the piston stroke axis than the groove 16 from the lowest
- Compression ring groove 14 Furthermore, the recess is made less deep than the groove 16 for the oil control ring.
- the depression 18 has less than half the depth of the groove 16.
- the recess 18 has a larger dimension in the direction of the piston stroke axis than the groove 16 for the oil control ring.
- the depression 18 in the case shown has the shape of a rounded notch, the deepest point being closer to the groove 16.
- the diameter in the region of the lower edge of the groove 18 is made smaller than that
- Diameter at the lower edge of the groove 16 in order to achieve the largest possible contact surface for the oil control ring is
- two bores 22 can be seen, which serve as oil drains and cut both the lower edge of the groove 16 and the upper edge of the depression 18. Furthermore, they extend up to in the case shown the bottom of the groove, which is deeper than that
- depression 18 so that an oil flow from the groove 16 to the depression 18 can be ensured here.
- the bores 22 typically extend from the bottom of the groove 16 to the course of the depression 18.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018211361.0A DE102018211361B4 (de) | 2018-07-10 | 2018-07-10 | Kolben für einen Verbrennungsmotor |
PCT/EP2019/068359 WO2020011767A1 (de) | 2018-07-10 | 2019-07-09 | Kolben für einen verbrennungsmotor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3821116A1 true EP3821116A1 (de) | 2021-05-19 |
Family
ID=67226264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19737736.9A Withdrawn EP3821116A1 (de) | 2018-07-10 | 2019-07-09 | Kolben für einen verbrennungsmotor |
Country Status (5)
Country | Link |
---|---|
US (1) | US11408507B2 (de) |
EP (1) | EP3821116A1 (de) |
CN (1) | CN112262254B (de) |
DE (1) | DE102018211361B4 (de) |
WO (1) | WO2020011767A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019209248A1 (de) * | 2019-06-26 | 2020-12-31 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor |
EP3961023B1 (de) * | 2020-09-01 | 2023-10-25 | FCA Italy S.p.A. | Kolben für eine brennkraftmaschine und enstsprechende herstellungsverfahren |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2511458A (en) * | 1947-03-25 | 1950-06-13 | Sr Harry M Bramberry | Oil control piston |
JP2005226522A (ja) | 2004-02-12 | 2005-08-25 | Riken Corp | 内燃機関のピストン装置 |
US7406941B2 (en) * | 2004-07-21 | 2008-08-05 | Federal - Mogul World Wide, Inc. | One piece cast steel monobloc piston |
DE102004061777A1 (de) * | 2004-12-22 | 2006-08-17 | Ks Kolbenschmidt Gmbh | Kolbenfenster mit Scupperslots und Freiguss |
DE102005041908A1 (de) * | 2005-09-03 | 2007-03-08 | Ks Kolbenschmidt Gmbh | Kolben mit einer unterhalb einer Ringnut angeordneten umlaufenden radialen Vertiefung |
JP4333693B2 (ja) * | 2006-05-22 | 2009-09-16 | トヨタ自動車株式会社 | 内燃機関用ピストンおよび内燃機関 |
CN101092914A (zh) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | 带封闭内冷油腔的焊接式锻钢整体活塞及其制造方法 |
JP5063634B2 (ja) * | 2009-03-12 | 2012-10-31 | 日立オートモティブシステムズ株式会社 | 内燃機関のピストン |
CN201620966U (zh) * | 2010-02-11 | 2010-11-03 | 山东滨州渤海活塞股份有限公司 | 整体式锻钢结构活塞 |
DE102011075673A1 (de) * | 2011-05-11 | 2012-11-15 | Mahle International Gmbh | Kolben |
US9046053B2 (en) * | 2011-06-29 | 2015-06-02 | Federal-Mogul Corporation | Piston with an undercrown support feature |
KR20150056622A (ko) | 2012-09-18 | 2015-05-26 | 페더럴-모걸 코오포레이숀 | 카운터-보어 구조를 가진 스틸 피스톤 |
DE102013214738A1 (de) * | 2013-07-29 | 2015-01-29 | Federal-Mogul Nürnberg GmbH | Leichtbau eines Dieselkolbens |
US9303584B2 (en) * | 2013-09-16 | 2016-04-05 | Federal-Mogul Corporation | Pinless piston with gallery |
CN105422306A (zh) | 2014-07-11 | 2016-03-23 | 马勒技术投资(中国)有限公司 | 用于内燃机的活塞 |
US9816459B2 (en) | 2015-04-17 | 2017-11-14 | Industrial Parts Depot, Llc | Piston with multi-arcuate cross-section and lubricant exhaust aperture |
JP6394485B2 (ja) * | 2015-05-08 | 2018-09-26 | スズキ株式会社 | 内燃機関のピストン |
JP6587978B2 (ja) * | 2016-06-01 | 2019-10-09 | 株式会社クボタ | エンジンのピストン |
CN206830319U (zh) | 2017-05-25 | 2018-01-02 | 浙江东新动力有限公司 | 柴油发动机活塞 |
JP2020045795A (ja) * | 2018-09-18 | 2020-03-26 | スズキ株式会社 | 内燃機関のピストン |
-
2018
- 2018-07-10 DE DE102018211361.0A patent/DE102018211361B4/de active Active
-
2019
- 2019-07-09 WO PCT/EP2019/068359 patent/WO2020011767A1/de unknown
- 2019-07-09 EP EP19737736.9A patent/EP3821116A1/de not_active Withdrawn
- 2019-07-09 US US15/734,748 patent/US11408507B2/en active Active
- 2019-07-09 CN CN201980038643.6A patent/CN112262254B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN112262254A (zh) | 2021-01-22 |
DE102018211361A1 (de) | 2020-01-16 |
US11408507B2 (en) | 2022-08-09 |
CN112262254B (zh) | 2022-10-04 |
WO2020011767A1 (de) | 2020-01-16 |
US20210239214A1 (en) | 2021-08-05 |
DE102018211361B4 (de) | 2020-03-05 |
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Legal Events
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