WO2014195288A1 - Kolben einer brennkraftmaschine - Google Patents
Kolben einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2014195288A1 WO2014195288A1 PCT/EP2014/061441 EP2014061441W WO2014195288A1 WO 2014195288 A1 WO2014195288 A1 WO 2014195288A1 EP 2014061441 W EP2014061441 W EP 2014061441W WO 2014195288 A1 WO2014195288 A1 WO 2014195288A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- outer diameter
- piston body
- crown
- combustion engine
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 description 5
- 238000013021 overheating Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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
- F02F3/28—Other pistons with specially-shaped head
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F2001/006—Cylinders; Cylinder heads having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers
Definitions
- the invention relates to a piston of an internal combustion engine according to the preamble of claim 1.
- Pistons of an internal combustion engine can be configured as so-called built-in pistons, which are composed of a piston upper part and of a piston lower part, or as so-called monoblock pistons.
- DE 35 18 721 C2 and DE 10 2005 013 087 B3 each known pistons are known, which are composed of a piston upper part and a piston lower part, wherein the piston upper part has an axially forward piston crown and a cylindrical outer wall.
- a so-called combustion chamber depression can be formed in a radially inner region of the piston crown.
- the cylindrical outer wall has grooves for receiving piston rings.
- FIG. 1 shows a known from the prior art piston 10 of an internal combustion engine together with a cylinder liner 1 1 associated flame ring 12, wherein the piston 10 in the axial direction forward a piston head 13 which defines a combustion chamber 14 of the respective cylinder sections, and wherein on a cylindrical outer wall 15 of the piston 10 grooves 16 are formed for receiving not shown piston rings.
- the piston 10 shown in FIG. 1 has a cooling space 17 for cooling the piston 10. 1, an axially forward portion 18 of the piston 10, which extends between the piston head 13 and the axially foremost groove 16 for receiving a piston ring, guided in the flame ring 12 of the cylinder liner 1 1, wherein the distance Z between the piston head 13 and the foremost groove 16 is referred to as Feuersteg Bank.
- the present invention has the object to provide a novel piston of an internal combustion engine.
- This object is achieved by a piston according to claim 1.
- the piston head at the radially outer edge of the piston body is pulled axially reducing the wall thickness.
- FIG. 2 shows a cross section through a first piston according to the invention together with a flame ring assigned to a cylinder liner;
- FIG. 4 shows a cross section through a second piston according to the invention together with a flame ring assigned to a cylinder liner; 5 shows a cross section through a third piston according to the invention together with a cylinder ring associated with a flame ring.
- the present invention relates to a piston of an internal combustion engine, in particular a 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 show details of a piston 20 according to the invention according to a first embodiment of the invention.
- the piston 20 may be a piston composed of a piston upper part and a piston lower part or alternatively a so-called monoblock piston.
- the piston body 21 shown in FIGS. 2 and 3 is the piston top of the built piston 20.
- the piston 20 includes a cooling space 26 for oil cooling thereof.
- the piston head 22 is pulled axially rearward on the radially outer edge or on the cylindrical outer wall 24 of the piston body 21 while reducing the wall thickness of the piston body 21, preferably with the formation of a circumferential material recess 30 in the circumferential direction.
- the wall thickness of the piston body 21 is reduced at the outer edge of the piston head 22, whereby on the one hand the piston 20 can be effectively cooled in this section and on the other hand, a Schadvolumen 31 between the Piston 20 and the flame ring 28 reduced.
- a local overheating of the piston can be avoided and the efficiency of the internal combustion engine can be increased.
- the material recess 30 extends from the outer edge or the cylindrical outer wall 24 of the piston body 21 by a first dimension Y in the radial direction inward, further comprising this material recess 30, starting from a not drawn axially rearward section of the axially front piston crown 22 extends rearwardly by a second amount X in the axial direction.
- These two dimensions X and Y may be identical, but these dimensions X and Y are preferably different from each other.
- the first dimension Y which extends in the radial direction, at least 2% of the outer diameter of the piston 20 and the piston body 21, preferably, this dimension Y is between 2% and 10% of this outer diameter.
- the second dimension X which extends in the axial direction, is also preferably at least 2% of the outer diameter of the piston 20 and the piston body 21, preferably, this second dimension X is between 2% and 6% of this outer diameter.
- the material recess 30 at the outer edge of the piston head 22 is to be distinguished from a combustion bowl, which may be additionally formed on a radially inner portion of the piston head 22.
- the material recess 30 may be accompanied by different contours of the piston crown 22 at the outer edge thereof.
- the piston head 22 is contoured curved in the region of the material recess 30, wherein the curvature changes in a turning point 32.
- the piston head 22 is contoured in the area of the material recess 30, but different radii of curvature are provided.
- the piston head 22 is contoured in the region of the material recess 30 ramp-like.
- Fig. 5 is a ramp-like contouring radially inward to form a rounding in the not drawn axially rearward portion of the piston head 22 via.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016517266A JP6381053B2 (ja) | 2013-06-05 | 2014-06-03 | 内燃機関のピストン |
KR1020167000194A KR101793848B1 (ko) | 2013-06-05 | 2014-06-03 | 연소엔진용 피스톤 |
CN201480032218.3A CN105247197B (zh) | 2013-06-05 | 2014-06-03 | 内燃机的活塞 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013009415.1A DE102013009415A1 (de) | 2013-06-05 | 2013-06-05 | Kolben einer Brennkraftmaschine |
DE102013009415.1 | 2013-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014195288A1 true WO2014195288A1 (de) | 2014-12-11 |
Family
ID=50877316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/061441 WO2014195288A1 (de) | 2013-06-05 | 2014-06-03 | Kolben einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6381053B2 (de) |
KR (1) | KR101793848B1 (de) |
CN (1) | CN105247197B (de) |
DE (1) | DE102013009415A1 (de) |
WO (1) | WO2014195288A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2913330A1 (de) * | 2014-02-27 | 2015-09-02 | Laboratoire Biodim | Als Arzneimittel geeignete kondensierte Derivate von Imidazol |
JP7545795B2 (ja) | 2019-07-05 | 2024-09-05 | 三菱重工エンジン&ターボチャージャ株式会社 | 内燃機関のピストンおよび内燃機関 |
DE102019122878A1 (de) * | 2019-08-27 | 2021-03-04 | Man Energy Solutions Se | Kolben und Zylinder einer Brennkraftmaschine und Brennkraftmaschine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5666045U (de) * | 1979-10-26 | 1981-06-02 | ||
DE3518721C2 (de) | 1985-05-24 | 1990-10-18 | Man B & W Diesel Ag, 8900 Augsburg, De | |
DE4342183A1 (de) * | 1993-12-10 | 1995-06-14 | Kloeckner Humboldt Deutz Ag | Brennkraftmaschine mit einer Zylinderrohreinlage |
DE10121852C2 (de) | 2001-05-04 | 2003-04-17 | Man B & W Diesel Ag | Hubkolbenbrennkraftmaschine |
DE102005013087B3 (de) | 2005-03-18 | 2006-08-31 | Man B & W Diesel Ag | Kolben für eine Hubkolbenbrennkraftmaschine mit gehärteten Kolbenringnuten |
EP2243940A1 (de) * | 2009-04-06 | 2010-10-27 | Wärtsilä Schweiz AG | Reduziereinrichtung zur Reduzierung eines Gasdrucks auf ein Kolbenringpaket einer Hubkolbenbrennkraftmaschine |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1974969U (de) * | 1967-10-14 | 1967-12-14 | Daimler Benz Ag | Kolben von brennkraftmaschinen. |
US4083292A (en) * | 1976-06-16 | 1978-04-11 | Caterpillar Tractor Co. | Piston with high top ring location |
JPS6218676Y2 (de) * | 1979-07-07 | 1987-05-13 | ||
JPS57103340U (de) * | 1980-12-18 | 1982-06-25 | ||
JPS60190650A (ja) * | 1984-03-13 | 1985-09-28 | Ngk Insulators Ltd | エンジン用ピストンおよびその製造法 |
DE3425203C1 (de) * | 1984-07-09 | 1986-01-16 | Mahle Gmbh, 7000 Stuttgart | Tauchkolben für Verbrennungsmotoren |
JPS62179346U (de) * | 1986-05-02 | 1987-11-14 | ||
JPH01166247U (de) * | 1988-05-10 | 1989-11-21 | ||
JP2669126B2 (ja) * | 1990-08-27 | 1997-10-27 | トヨタ自動車株式会社 | 内燃機関用ピストン |
JPH0618644U (ja) * | 1992-08-06 | 1994-03-11 | 本田技研工業株式会社 | 内燃機関のピストン装置 |
JP3222379B2 (ja) * | 1996-04-11 | 2001-10-29 | トヨタ自動車株式会社 | 内燃機関の燃焼室構造 |
DE19740065A1 (de) * | 1997-09-12 | 1999-03-18 | Ks Kolbenschmidt Gmbh | Leichtmetallkolben für Brennkraftmaschinen |
JP3644228B2 (ja) * | 1998-01-07 | 2005-04-27 | 日産自動車株式会社 | 筒内噴射式火花点火機関 |
JP2001132536A (ja) * | 1999-11-10 | 2001-05-15 | Aisin Seiki Co Ltd | 内燃機関用ピストン |
WO2005045222A1 (ja) * | 2003-10-16 | 2005-05-19 | Kabushiki Kaisha Riken | 内燃機関およびライナー装着リング |
JP2006152904A (ja) * | 2004-11-29 | 2006-06-15 | Mitsubishi Motors Corp | 内燃機関の燃焼室構造 |
JP2007064133A (ja) * | 2005-09-01 | 2007-03-15 | Nissan Diesel Motor Co Ltd | ピストン構造 |
JP4283271B2 (ja) * | 2005-12-28 | 2009-06-24 | 本田技研工業株式会社 | 内燃機関の圧縮比可変装置 |
JP5537110B2 (ja) * | 2009-09-30 | 2014-07-02 | ダイハツ工業株式会社 | 内燃機関 |
JP2011085109A (ja) * | 2009-10-19 | 2011-04-28 | Niigata Power Systems Co Ltd | ピストン及びエンジン |
-
2013
- 2013-06-05 DE DE102013009415.1A patent/DE102013009415A1/de active Pending
-
2014
- 2014-06-03 KR KR1020167000194A patent/KR101793848B1/ko active IP Right Grant
- 2014-06-03 JP JP2016517266A patent/JP6381053B2/ja active Active
- 2014-06-03 CN CN201480032218.3A patent/CN105247197B/zh active Active
- 2014-06-03 WO PCT/EP2014/061441 patent/WO2014195288A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5666045U (de) * | 1979-10-26 | 1981-06-02 | ||
DE3518721C2 (de) | 1985-05-24 | 1990-10-18 | Man B & W Diesel Ag, 8900 Augsburg, De | |
DE4342183A1 (de) * | 1993-12-10 | 1995-06-14 | Kloeckner Humboldt Deutz Ag | Brennkraftmaschine mit einer Zylinderrohreinlage |
DE10121852C2 (de) | 2001-05-04 | 2003-04-17 | Man B & W Diesel Ag | Hubkolbenbrennkraftmaschine |
DE102005013087B3 (de) | 2005-03-18 | 2006-08-31 | Man B & W Diesel Ag | Kolben für eine Hubkolbenbrennkraftmaschine mit gehärteten Kolbenringnuten |
EP2243940A1 (de) * | 2009-04-06 | 2010-10-27 | Wärtsilä Schweiz AG | Reduziereinrichtung zur Reduzierung eines Gasdrucks auf ein Kolbenringpaket einer Hubkolbenbrennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
KR101793848B1 (ko) | 2017-11-03 |
CN105247197B (zh) | 2018-11-30 |
JP6381053B2 (ja) | 2018-08-29 |
DE102013009415A1 (de) | 2014-12-11 |
JP2016520759A (ja) | 2016-07-14 |
KR20160017053A (ko) | 2016-02-15 |
CN105247197A (zh) | 2016-01-13 |
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