EP2329126A2 - Kühlkanal eines kolbens für einen verbrennungsmotor - Google Patents
Kühlkanal eines kolbens für einen verbrennungsmotorInfo
- Publication number
- EP2329126A2 EP2329126A2 EP09776100A EP09776100A EP2329126A2 EP 2329126 A2 EP2329126 A2 EP 2329126A2 EP 09776100 A EP09776100 A EP 09776100A EP 09776100 A EP09776100 A EP 09776100A EP 2329126 A2 EP2329126 A2 EP 2329126A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cooling channel
- cooling duct
- oil
- openings
- 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- Withdrawn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
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
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
Definitions
- the invention relates to a cooling channel of a piston for an internal combustion engine according to the preamble of claim.
- EP 1 063 409 B1 discloses a cooling channel for a piston of an internal combustion engine which has two openings arranged side by side and mutually to be used as inlet openings and a drain opening on the side of the cooling channel opposite these openings.
- the disadvantage here is that the introduced into the cooling channel oil flows at a very high flow rate through the cooling channel, with only a small portion of the oil flows through the drain opening and the rest with high flow rate to the second, mutually used as an inlet opening opening continues to hereby to flow out of the cooling channel.
- a piston 1 for an internal combustion engine with a ring section 2, a piston head 3, a side facing away from the piston crown on the side of the ring 2 piston shaft 4 and a pin bore 5 for a piston pin, not shown in the figure.
- an annular cooling channel 6 is arranged radially outside, which has two openings 7 and 8 on one side, which are each connected via a quarter-circular channel bend 9 and 10 with the annular part of the cooling channel 6 and in the direction away from the piston crown point.
- the openings 7 and 8 serve mutually as an inlet opening or as a drain opening for an oil nozzle 11 in the direction of the openings 7 and 8 injected oil 12th
- the piston 1 is shown in a position corresponding to the top dead center of the piston 1.
- the piston axis 13 obliquely aligned oil jet 12 hits the opening 8, which thus acts as an inlet opening. If the piston 1 moves downwards in the direction of the arrow 14 as part of the combustion or intake stroke, the opening 7 is hit by the oil jet 12 from a certain piston position, so that then this opening 7 acts as an inlet opening for the oil 12.
- cooling channel 6 On the openings 7 and 8 radially opposite side of the cooling channel 6 has two facing away from the piston bottom direction discharge openings 15 and 16. Between the discharge openings 15 and 16, the cooling channel 6 acts as a throttling cross-sectional constriction 17.
- the throttle 17, causes a portion of the oil 12 injected into the opening 8 at the position of the piston 1 shown in the figure to be discharged from the discharge opening 16 and, secondly, that the flow continues through the left half of the cooling channel Is slowed down, which has the effect that in the downward movement of the piston 1 in the direction of the arrow 14, wherein the opening 7 in the beam path of the oil 12 is then to act as an inlet opening, in the left half of the cooling channel 6 do not form eddies in the oil that would hinder the flow of oil through the opening 7 in the left half of the cooling channel 6.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008038324A DE102008038324A1 (de) | 2008-08-19 | 2008-08-19 | Kühlkanal eines Kolbens für einen Verbrennungsmotor |
| PCT/DE2009/001162 WO2010020231A2 (de) | 2008-08-19 | 2009-08-19 | Kühlkanal eines kolbens für einen verbrennungsmotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2329126A2 true EP2329126A2 (de) | 2011-06-08 |
Family
ID=41566554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09776100A Withdrawn EP2329126A2 (de) | 2008-08-19 | 2009-08-19 | Kühlkanal eines kolbens für einen verbrennungsmotor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110174245A1 (de) |
| EP (1) | EP2329126A2 (de) |
| JP (1) | JP5349596B2 (de) |
| DE (1) | DE102008038324A1 (de) |
| WO (1) | WO2010020231A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011076455A1 (de) | 2011-05-25 | 2012-11-29 | Mahle International Gmbh | Gießkern zur Bildung eines Kühlkanals in einem Kolben |
| WO2013052182A2 (en) * | 2011-06-21 | 2013-04-11 | Bayer Materialscience Llc | Polycarbonate laminate for close-proximity blast events |
| DE102012213558A1 (de) | 2012-08-01 | 2014-02-06 | Mahle International Gmbh | Kolben |
| JP2014185522A (ja) * | 2013-03-21 | 2014-10-02 | Hitachi Automotive Systems Ltd | 内燃機関のピストン |
| JP2018508691A (ja) * | 2015-01-30 | 2018-03-29 | フェデラル−モーグル・リミテッド・ライアビリティ・カンパニーFederal−Mogul Llc | 冷却空洞冷却インサートを有するピストン、およびその構成方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742418U (ja) * | 1993-12-25 | 1995-08-04 | 株式会社ユニシアジェックス | 内燃機関用ピストン |
| US5595145A (en) * | 1995-05-31 | 1997-01-21 | Kabushiki Kaisha Komatsu Seisakusho | Cooling structure of diesel engine piston |
| DE19618625C1 (de) * | 1996-05-09 | 1997-10-23 | Daimler Benz Ag | Flüssigkeitsgekühlter Kolben für Verbrennungsmotoren |
| DE19703001C2 (de) * | 1997-01-28 | 1998-12-03 | Alcan Gmbh | Flüssigkeitsgekühlter Kolben |
| DE19929102A1 (de) | 1999-06-24 | 2000-12-28 | Ks Kolbenschmidt Gmbh | Kolben für einen Verbrennungsmotor |
| JP2003301744A (ja) * | 2002-04-08 | 2003-10-24 | Toyota Motor Corp | ピストン冷却装置及び方法 |
| DE102004043720A1 (de) * | 2004-09-09 | 2006-03-30 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor sowie Verbrennungsmotor |
| JP2007278220A (ja) * | 2006-04-10 | 2007-10-25 | Toyota Motor Corp | 内燃機関のピストン冷却構造 |
| DE102006056012A1 (de) * | 2006-11-28 | 2008-05-29 | Ks Kolbenschmidt Gmbh | Variabel gestalteter Kühlkanal für einen Kolben |
| DE102006056011A1 (de) * | 2006-11-28 | 2008-05-29 | Ks Kolbenschmidt Gmbh | Kühlkanalvarianten für Kolben |
| DE102006056013A1 (de) * | 2006-11-28 | 2008-05-29 | Ks Kolbenschmidt Gmbh | Kühlkanalkolben |
-
2008
- 2008-08-19 DE DE102008038324A patent/DE102008038324A1/de not_active Withdrawn
-
2009
- 2009-08-19 US US12/737,824 patent/US20110174245A1/en not_active Abandoned
- 2009-08-19 JP JP2011523301A patent/JP5349596B2/ja not_active Expired - Fee Related
- 2009-08-19 EP EP09776100A patent/EP2329126A2/de not_active Withdrawn
- 2009-08-19 WO PCT/DE2009/001162 patent/WO2010020231A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010020231A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5349596B2 (ja) | 2013-11-20 |
| WO2010020231A2 (de) | 2010-02-25 |
| JP2012500354A (ja) | 2012-01-05 |
| WO2010020231A3 (de) | 2010-04-15 |
| US20110174245A1 (en) | 2011-07-21 |
| DE102008038324A1 (de) | 2010-02-25 |
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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: 20110311 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20160927 |
|
| 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: 20170208 |