EP1490589A1 - Oil inlet for an internal combustion engine piston that is provided with a cooling duct - Google Patents
Oil inlet for an internal combustion engine piston that is provided with a cooling ductInfo
- Publication number
- EP1490589A1 EP1490589A1 EP03745747A EP03745747A EP1490589A1 EP 1490589 A1 EP1490589 A1 EP 1490589A1 EP 03745747 A EP03745747 A EP 03745747A EP 03745747 A EP03745747 A EP 03745747A EP 1490589 A1 EP1490589 A1 EP 1490589A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil inlet
- oil
- cooling
- cross
- jet
- 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.)
- Granted
Links
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
Definitions
- Oil inlet for a piston of an internal combustion engine provided with a cooling channel
- the invention relates to an oil inlet for a piston provided with a cooling channel of an internal combustion engine, with an approximately circular cover of the cooling channel to which the oil inlet is attached and the cooling channel via the oil inlet by means of an oil spray nozzle which is fixedly connected to the engine housing from the crank chamber through the free interior of the A free cooling oil jet can be applied through the piston skirt.
- Pistons cooled in this way with an oil inlet are known, for example, from US Pat. Nos. 3,221,718, Jp 59-27109, PCT / DE94 / 01375 and DE 37 33 964 C2.
- the oil inlets used as catch funnels for cooling oil which is emitted from an oil spray nozzle connected to the engine housing, have inner walls that are funnel-shaped, cylindrical, oval or in the form of a venturi nozzle when viewed from the free interior of the piston towards the cooling channel.
- additional beam splitters are sometimes inserted into the wall of the cooling channel, which is opposite the exit surface of the oil inlet.
- Such designs are intended to ensure that the oil jet widening from the oil spray nozzle is captured and fed to the cooling channel, these designs not only relating to vertical oil jet layers, i.e. perpendicular to the inlet surface of the oil inlet, but also include inclined oil jet layers, in which the amount of oil entering the cooling channel is determined as a function of the stroke height of the piston.
- the last-mentioned embodiment shows deficiencies in the achievement of a continuous degree of oil filling of the cooling channel, which is due to unfavorable flow and friction conditions when the cooling oil enters the inlet.
- the object of the invention is to design an oil inlet for a piston with a cooling channel in such a way that better bundling of the cooling oil jet when entering the oil inlet and better distribution at the outlet into the cooling channel is made possible.
- the solution according to the invention makes it possible to completely introduce a free jet of cooling oil into the cooling channel with an approximately perpendicular impact on the cross-sectional opening area of the oil inlet.
- a free jet of cooling oil jet With an oblique jet position of the free cooling oil jet, it is advantageously achieved that the largest part is introduced into the cooling channel, since a lower frictional resistance arises as a result of a tangential deflection of the oil jet hitting the wall of the inlet.
- Oblique cooling oil jets are used in engines in which, for design reasons, the oil spray nozzle must be arranged at a certain angle to the surface normal of the cross-sectional opening area of the inlet or to the piston longitudinal axis. Due to the oblique orientation of the cooling oil jet, it hits the inner wall of the inlet at different locations due to the stroke movement of the piston.
- Fig. 1 shows a piston according to the invention in partial cross section, cut into
- Fig. 2 is a representation of the inner wall surface in a first
- Fig. 3 shows the inner wall surface in a second
- a piston 1 with a combustion bowl 9 has a cooling channel 4, which is closed at the bottom by a cover 5 in the form of a two-part plate spring.
- an oil inlet 2 designed as a collecting funnel for a cooling oil jet 7 is provided, which can be made of metal or plastic and by means of soldering, welding, gluing, or by means of a securing ring, a tensioning element or a snap connection on the cooling duct cover, as from DE 19960 913 A1 known, oil-tight attached.
- the cooling duct 4 is supplied with the free cooling oil jet 7 via the oil inlet 2 through an oil spray nozzle 6, which is firmly connected to the engine housing, from the crank chamber through the free interior of the piston skirt, as shown in FIG. 1, the cross-sectional entry surfaces B or after as the oil inlet Fig. 3, D serve.
- the oil inlet 2 has an inner wall 3, the shape of which depends on the
- Oil spray nozzle 6 generated jet position of the cooling oil jet 7 with respect to
- Cross-sectional entry surface B and D of the oil inlet is determined.
- the inner wall surface 2 of the oil inlet 3 has a shape that is rectangular
- the dimensions of the oil inlet ensure that the volume from the cross-sectional entry areas B and D to the cross-sectional areas A and B is so large that the oil supply for the time cross section fits from 0 to 360 crank angle into the oil inlet. Furthermore, the cross-sectional area A determined by the functional constant a approximately corresponds to the oil jet cross-section at the top dead center TDC of the piston, with the aforementioned measures achieving a very effective oil distribution when exiting into the cooling channel.
- the cross-sectional areas A, C of the oil inlet 3, that is to say the smallest cross-sectional areas of the oil inlet 2, are arranged approximately in the plane of the annular cover 5 of the cooling duct 4, so that a protrusion is formed in the interior of the cooling duct, which is relative to the size of the outlet (protrusion and Size of the drain opening - not shown) leaves a defined portion of cooling oil in the cooling channel for circulation until it flows away.
- the oil inlets 2 are produced as a turned part by means of a computer-controlled program.
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)
- Lubrication Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10214830A DE10214830A1 (en) | 2002-04-04 | 2002-04-04 | Oil inlet for a piston of an internal combustion engine provided with a cooling channel |
DE10214830 | 2002-04-04 | ||
PCT/DE2003/001076 WO2003085251A1 (en) | 2002-04-04 | 2003-04-02 | Oil inlet for an internal combustion engine piston that is provided with a cooling duct |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1490589A1 true EP1490589A1 (en) | 2004-12-29 |
EP1490589B1 EP1490589B1 (en) | 2008-04-02 |
Family
ID=28684743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03745747A Expired - Fee Related EP1490589B1 (en) | 2002-04-04 | 2003-04-02 | Oil inlet for an internal combustion engine piston that is provided with a cooling duct |
Country Status (6)
Country | Link |
---|---|
US (1) | US7051684B2 (en) |
EP (1) | EP1490589B1 (en) |
JP (1) | JP2005521833A (en) |
KR (1) | KR20040101387A (en) |
DE (2) | DE10214830A1 (en) |
WO (1) | WO2003085251A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10346822A1 (en) * | 2003-10-06 | 2005-04-21 | Mahle Gmbh | Piston for an internal combustion engine |
DE102004043733A1 (en) * | 2004-09-10 | 2006-03-16 | Ina-Schaeffler Kg | Housing of a clamping system with integrated spray nozzle |
DE102005061059A1 (en) | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Piston for internal combustion engine has piston head side regions of gudgeon-pin hub reinforced radially inward, and oil outflow borings directed to these regions |
JP4586747B2 (en) * | 2006-03-06 | 2010-11-24 | 日産自動車株式会社 | Reciprocating engine |
DE102006013884A1 (en) | 2006-03-25 | 2007-09-27 | Mahle International Gmbh | Internal combustion engine`s piston, has head with piston base exposed to focal ray and skirt, and circular partition wall arranged in cooling channel formed by skirt and arranged parallel to head, where wall has nozzle-like openings |
CN102076936A (en) * | 2008-07-03 | 2011-05-25 | 沃尔沃拉斯特瓦格纳公司 | Piston for an internal combustion engine |
DE102009039217A1 (en) * | 2009-08-28 | 2011-03-03 | Mahle International Gmbh | Piston for internal combustion engine, has piston head and hub bore holes with piston shaft, where cooling channel is arranged in piston head |
DE102011013113A1 (en) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
DE102011106379A1 (en) * | 2011-07-04 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine |
DE202012001105U1 (en) | 2012-02-03 | 2012-04-10 | Schaeffler Technologies AG & Co. KG | Radiation crosslinked Ölanspritzdüse |
FI124930B (en) * | 2012-02-15 | 2015-03-31 | Wärtsilä Finland Oy | The piston cooling arrangement |
US9470136B2 (en) * | 2014-03-06 | 2016-10-18 | Achates Power, Inc. | Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine |
DE102014015946A1 (en) * | 2014-10-30 | 2016-05-19 | Mahle International Gmbh | Cooling duct cover and piston provided with a cooling channel cover |
DE102014015947A1 (en) * | 2014-10-30 | 2016-05-19 | Mahle International Gmbh | Cooling duct cover and piston provided with a cooling channel cover |
CN104475277A (en) * | 2014-11-12 | 2015-04-01 | 宁夏嘉翔自控技术有限公司 | Water mist outlet of Venturi water bath dust removal spray head of dust removal system of carbon electrode paste conveying system |
KR20170095297A (en) | 2014-12-19 | 2017-08-22 | 페더럴-모걸 엘엘씨 | Piston with cooling gallery having enhaced oil inlet and method of construction thereof |
GB201519640D0 (en) * | 2015-11-06 | 2015-12-23 | Gm Global Tech Operations Inc | Piston cooling jet for an internal combustion engine |
US10294887B2 (en) | 2015-11-18 | 2019-05-21 | Tenneco Inc. | Piston providing for reduced heat loss using cooling media |
US10227948B2 (en) * | 2015-12-18 | 2019-03-12 | Mahle International Gmbh | Piston for an internal combustion engine |
USD886155S1 (en) | 2015-12-18 | 2020-06-02 | Mahle International Gmbh | Piston for an internal combustion engine |
DE102016221353A1 (en) * | 2016-10-28 | 2018-05-03 | Mahle International Gmbh | Internal combustion engine |
DE102017205716A1 (en) | 2017-04-04 | 2018-10-04 | Mahle International Gmbh | Piston of an internal combustion engine |
US20220205408A1 (en) * | 2019-04-09 | 2022-06-30 | Ks Kolbenschmidt Gmbh | Gallery-cooled piston with a funnel-shaped inlet into the cooling gallery |
DE102019213358A1 (en) * | 2019-09-03 | 2021-03-04 | Mahle International Gmbh | piston |
DE102019133115A1 (en) | 2019-12-05 | 2021-06-10 | Ford Global Technologies Llc | Air intake device of a reciprocating internal combustion engine |
US11326549B2 (en) | 2020-01-21 | 2022-05-10 | Ford Global Technologies, Llc | 218-0266 volcano-shaped inlet of piston oil-cooling gallery |
US11959412B2 (en) | 2021-05-04 | 2024-04-16 | Cummins Inc. | Pistons and piston assemblies for internal combustion engines |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT1919B (en) | 1899-05-29 | 1900-08-10 | Edward Hibberd Johnson | |
DE1228234B (en) * | 1963-01-14 | 1966-11-10 | Union Oil Co | Process for concentrating phosphoric acid and apparatus for carrying out the process |
US3221718A (en) * | 1964-01-09 | 1965-12-07 | Continental Aviat & Eng Corp | Piston construction |
FR2079873A5 (en) * | 1970-02-16 | 1971-11-12 | Semt | |
FR2125687A5 (en) * | 1971-02-16 | 1972-09-29 | Semt | |
JPS5927109A (en) | 1982-08-02 | 1984-02-13 | Sanyo Electric Co Ltd | Combustion apparatus |
JPS5927119A (en) | 1982-08-04 | 1984-02-13 | Osaka Gas Co Ltd | Re-burning construction of combustion furnace |
DE3702272A1 (en) | 1986-04-18 | 1987-10-22 | Mahle Gmbh | Trunk piston for internal combustion engines with a hollow space through which cooling oil flows |
DE3733964A1 (en) | 1987-10-08 | 1989-04-20 | Mahle Gmbh | Coolable trunk piston for internal combustion engines |
DE4039754A1 (en) * | 1990-12-13 | 1992-06-17 | Mahle Gmbh | Multi-part cooled piston for IC engine - has hollow ring-shaped chamber in head part for cooling oil, closed at based |
DE4039752A1 (en) * | 1990-12-13 | 1992-06-17 | Mahle Gmbh | Multi-part oil-cooled piston for IC engine - has ring-shaped hollow chamber in head part for cooling oil |
DE4340891A1 (en) | 1993-12-01 | 1995-06-08 | Mahle Gmbh | Reciprocating pistons for internal combustion engines made in particular of light metal |
AT1919U1 (en) * | 1996-08-06 | 1998-01-26 | Avl Verbrennungskraft Messtech | INTERNAL COMBUSTION ENGINE |
KR100208752B1 (en) * | 1996-10-16 | 1999-07-15 | 정몽규 | Oil jet apparatus |
US5881684A (en) * | 1997-07-21 | 1999-03-16 | Bontaz Centre, Societe Anonyme | Interference fit cooling spray nozzle |
DE19927931A1 (en) * | 1999-06-18 | 2001-01-04 | Daimler Chrysler Ag | Internal combustion engine with crankshaft, in which piston-end connecting rod bearing is fitted in piston cavity to leave clearance between rod and piston head |
EP1108476B1 (en) * | 1999-06-30 | 2005-12-14 | Anest Iwata Corporation | Low-pressure atomizing spray gun |
SE9902968L (en) * | 1999-08-23 | 2000-06-19 | Scania Cv Ab | Apparatus for piston cooling and a method for making a nozzle thereto |
DE19960913A1 (en) * | 1999-12-17 | 2001-06-21 | Mahle Gmbh | Bottom cover of a cold room for pistons of internal combustion engines |
DE10024207A1 (en) * | 2000-05-17 | 2002-01-24 | Man Nutzfahrzeuge Ag | A method for oil cooling the pistons in a combustion engine has additional passages in the spray jets to inject oil to the underside of the piston. |
US6401595B1 (en) * | 2000-10-18 | 2002-06-11 | Caterpillar Inc. | Piston for an internal combustion engine and method of assembly |
US6494170B2 (en) * | 2000-12-01 | 2002-12-17 | Caterpillar Inc | Two-piece piston assembly with skirt having pin bore oil ducts |
FR2827009B1 (en) * | 2001-07-04 | 2003-12-12 | Bontaz Centre Sa | PISTON COOLING JET |
US6701875B2 (en) * | 2002-05-31 | 2004-03-09 | Cummins Inc. | Internal combustion engine with piston cooling system and piston therefor |
-
2002
- 2002-04-04 DE DE10214830A patent/DE10214830A1/en not_active Withdrawn
-
2003
- 2003-04-02 US US10/509,663 patent/US7051684B2/en not_active Expired - Lifetime
- 2003-04-02 EP EP03745747A patent/EP1490589B1/en not_active Expired - Fee Related
- 2003-04-02 WO PCT/DE2003/001076 patent/WO2003085251A1/en active IP Right Grant
- 2003-04-02 KR KR10-2004-7015721A patent/KR20040101387A/en not_active Application Discontinuation
- 2003-04-02 DE DE50309534T patent/DE50309534D1/en not_active Expired - Lifetime
- 2003-04-02 JP JP2003582408A patent/JP2005521833A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO03085251A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1490589B1 (en) | 2008-04-02 |
KR20040101387A (en) | 2004-12-02 |
JP2005521833A (en) | 2005-07-21 |
US20050115523A1 (en) | 2005-06-02 |
WO2003085251A1 (en) | 2003-10-16 |
US7051684B2 (en) | 2006-05-30 |
DE10214830A1 (en) | 2004-01-08 |
DE50309534D1 (en) | 2008-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2003085251A1 (en) | Oil inlet for an internal combustion engine piston that is provided with a cooling duct | |
DE2831566C2 (en) | ||
DE2905056A1 (en) | VALVE CONTROLLED PISTON ENGINE | |
EP0731877B1 (en) | Internal combustion engine | |
DE4219955B4 (en) | Two-stroke internal combustion engine for engine chainsaws | |
DE19835563A1 (en) | Four-stroke internal combustion engine with direct injection | |
DE3107826A1 (en) | FUEL INJECTION DEVICE OPERATED BY THE COMPRESSION PRESSURE FOR INTERNAL COMBUSTION ENGINES | |
DE112016005765T5 (en) | Piston for an internal combustion engine | |
EP3129618A1 (en) | Assembly of a piston and an oil spray nozzle for an internal combustion engine | |
DE3732925C1 (en) | Cooled plunger for internal combustion engines | |
EP1063409B1 (en) | Piston for an internal combustion engine | |
WO2010020231A2 (en) | Cooling duct for a piston of a combustion engine | |
EP0838586A1 (en) | Cylinder head for a multi-cylinder internal combustion engine | |
DE60002533T2 (en) | Spark-ignition internal combustion engine with direct injection and method for injecting fuel | |
DE19600448C1 (en) | Liquid-cooled cylinder head for multicylinder engine | |
DE10217626A1 (en) | Device for recycling the exhaust gas of an internal combustion engine | |
DE102004037494A1 (en) | Two-stroke internal combustion engine | |
DE202018006795U1 (en) | Cylinder head for an internal combustion engine | |
DE3733964C2 (en) | ||
DE19508113C2 (en) | Liquid-cooled four-valve cylinder head for a multi-cylinder internal combustion engine | |
EP0930427B1 (en) | Internal combustion engine and method for its mixture preparation | |
DE10326054A1 (en) | Operating method for reciprocating piston engine for motor vehicles with screening parts around cylinder head intakes interrupted in fuel jet area to subject fuel jet to incoming combustion air flow | |
DE102004057559A1 (en) | Piston for a combustion engine comprises a peripheral collar arranged a low axial distance from the piston base and having a bend in the hub direction and a radial width sufficient for elasticity in the axial direction | |
DE102007012508A1 (en) | Cylinder head for internal combustion engines and internal combustion engines with such a cylinder head | |
DE102004017084B4 (en) | reciprocating internal combustion engine |
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: 20041007 |
|
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 IT LI LU MC NL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20070629 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 50309534 Country of ref document: DE Date of ref document: 20080515 Kind code of ref document: P |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20090106 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20190419 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20190429 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20190429 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20200629 Year of fee payment: 18 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200430 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20200402 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200402 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200402 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50309534 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20211103 |