EP1629182A1 - Spritzdüse zur kolbenkühlung bei einer brennkraftmaschine - Google Patents
Spritzdüse zur kolbenkühlung bei einer brennkraftmaschineInfo
- Publication number
- EP1629182A1 EP1629182A1 EP04731186A EP04731186A EP1629182A1 EP 1629182 A1 EP1629182 A1 EP 1629182A1 EP 04731186 A EP04731186 A EP 04731186A EP 04731186 A EP04731186 A EP 04731186A EP 1629182 A1 EP1629182 A1 EP 1629182A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray nozzle
- webs
- cooling fluid
- nozzle
- cross
- 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
- 239000007921 spray Substances 0.000 title claims abstract description 34
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 239000012809 cooling fluid Substances 0.000 claims abstract description 34
- 238000013467 fragmentation Methods 0.000 claims description 13
- 238000006062 fragmentation reaction Methods 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 20
- 239000002826 coolant Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- 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
- F01P3/10—Cooling by flow of coolant through pistons
-
- 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
- the invention relates to a spray nozzle for piston cooling of an internal combustion engine, in particular an internal combustion engine.
- the 5 outlet orifice for cooling fluid is designed with an outlet geometry or an outlet cross section, which prevents the outlet of cooling fluid into an inner region which lies within an imaginary extension of the outlet mouth and is surrounded by the otherwise sprayed-out cooling fluid.
- Cooling water or engine oil are used as cooling media and passed through channels.
- the internal combustion engine components are also wetted with cooling medium on their surfaces. In the case of the internal combustion engine, this applies in particular to the piston crown.
- the 5 wetting can take place with engine oil via a cooling channel of the piston.
- the applied oil absorbs the heat and flows back into the oil circuit, which is constantly cooled.
- a large diameter spray tube is required to apply oil.
- a bundled cooling medium jet with common nozzle shapes cannot be realized with these.
- the cross-shaped surfaces of the guide piece standing transversely in the oil flow would restrict the passage of the feed bore in the nozzle for dirt particles so considerably that the nozzle could easily become completely blocked.
- the oil jet outlet end of this nozzle is realized at the front by a simple, cylindrical muzzle.
- the bundling of the cooling oil jet is only promoted by the physical effect of the cohesion between the individual oil particles in the jet.
- EP-B-0 825 335 also addresses the problem of achieving a targeted, concentrated action on the piston and thus effective cooling by preventing the oil jet from fanning out prematurely.
- PORSCHE use is made of a plurality of outlet channels which run in a nozzle end piece and which run parallel to one another.
- the promotion of the bundling should serve a targeted dimensioning of the mouth channel diameters and the distances of the mouth channels from one another.
- one is dependent on the physical effect of cohesion in order to bundle the emerging partial beams into a full beam.
- the proposed, relatively small distance between the mouth channels also serves this purpose.
- EP-B-0 057 790 (CATERPILLAR) is based on a similar principle of action, according to which, in the case of a coolant nozzle, a first cooling oil outlet of larger diameter is surrounded by a ring of 5 rows of cooling oil outlets of smaller diameter.
- a vacuum zone is created which is curved by the curved beam cross-sectional profile.
- a dome for the plastic deformation of a tube-like blank is proposed.
- the tube walls have to be pressed against the mandrel in order to adapt to the cross section of the dome. After that, it may be difficult to separate the mandrel and the plastically deformed nozzle tube piece.
- the invention has for its object to avoid and eliminate the disadvantages arising from the prior art in a generic 5 spray nozzle to simplify and simplify the manufacture and to further optimize the beam.
- To solve the spray nozzle specified in claim 1 is proposed.
- Optional, advantageous embodiments of this invention result from the dependent claims.
- the cooling fluid flow inside the nozzle is broken down into a plurality of individual partial jets by means of the webs, these can be grouped in a common row around the (vacuum) zone kept free of cooling fluid and thus shield the vacuum zone even better from ambient pressure , As a result, an even greater reduction 5 in the (negative) pressure compared to ambient atmospheric pressure is achieved in the negative pressure zone, with the further consequence that the individual jets are “sucked” even more strongly into the negative pressure inner region and thus converge.
- the invention opens up the further advantageous embodiment that the thickness of the 5 webs can be minimized in relation to the thickness or the “diameter” of the individual partial beams, as a result of which the distances between adjacent partial beams are also minimized.
- the advantage achieved in this way is an even denser shielding of the negative pressure inner region from atmospheric pressure, with the resultant further lowering of the inner region pressure.
- a simplification of the construction and manufacturing method can usually be achieved by means of structures that are as uniform or symmetrical as possible.
- An advantageous embodiment consists in the fact that the webs - starting from the transformation surrounding the outlet mouth - extend towards the center of the outlet cross-section, in particular with a cylindrical basic shape, extend radially o and meet or intersect there. Alternatively, the webs can meet a particularly pronounced, for example disc-like inner part, via which the webs are connected. This creates an easily manageable or mountable fragmentation insert, which can be inserted quickly into the nozzle outlet mouth, preferably in a cross or star shape.
- the inner part sufficiently large with a diameter or an extension which exceed the thickness of the webs and at least one fifth of the thickness, of the Diameter or the otherwise cross-sectional extent that the outer contour or 0 conversion of the nozzle outlet mouth takes.
- a particularly inexpensive method of manufacture results when the beam fragmentation insert is produced as a single piece, for example in plastic injection molding or the like and / or from sintered steel or from an otherwise heat and / or Oil-resistant and abrasion-resistant material is produced, the inner part and the webs being connected to one another in one piece or otherwise integrated.
- the webs do not need, or at least not all, to run to the inside of the cross section of the exit mouth;
- the webs it is also conceivable for the webs to run like straight or curved chords of a circular or other round arc and thus to delimit circular segments or other round segments.
- the vacuum inner region / intrinsic zone is delimited by a series of partial beams lying next to one another in a circular segment shape in the form of a circle. Since the associated tendons formed by the webs can meet in their concave corners, this special design makes it possible to achieve a particularly effective shielding of the vacuum inner zone / inner region.
- the invention is not only limited to supporting the possible inner part by means of the webs against the inner wall of the nozzle.
- the inner part in particular in an elongated mandrel or stem shape, could be held from the inside of the nozzle, for example from the inlet of the nozzle, by means of a soldered-in wire or the like.
- Figure 1 schematically shows an arrangement of a spray nozzle for wetting a
- An internal combustion engine piston connected to a crankshaft or the like via a connecting rod;
- Figure 2 shows an embodiment of the spray nozzle according to the invention in
- Figure 3 shows the spray nozzle in longitudinal section along line III-III in Figure 2;
- FIG. 4 shows a representation corresponding to FIG. 3 with a radiation
- FIG. 5 shows a longitudinal view of the spray nozzle according to FIGS. 2-4.
- a piston 2 is linearly guided in an engine block 1 for carrying out lifting movements.
- the piston strokes are coupled out to a crankshaft or the like via connecting rod devices 3 or the like.
- an inlet pipe 4 for cooling fluid for example motor oil, extends from the engine block 1 and runs in alignment with the reciprocating piston 2.
- the inlet pipe 4 has in its end facing the piston 2 the spray nozzle 5 according to the invention, of which a composite total cooling fluid jet 6 is injected directly to the nozzle outlet vacuum region 7.
- the spray nozzle 5 is realized in the free end region of the feed pipe 4 with a tapered pipe section 8, in which a cross-shaped fragmentation insert 9 is located.
- this can be structured according to the cross shape into four radial webs 10 and a central inner part 11, into which the webs 10 merge.
- the outer contour of the inner part 11 between two respective webs 10 is designed with a radius of, for example, 0.2 mm, whereby the inner part 11 is approximately given a disk shape.
- the rounded inner part 11 has a diameter of approximately 2 mm, while the inner diameter of the tapered tube section 8 is approximately 4.3 mm. This results in an exit area for the remainder of the tapered • pipe section 8 by flowing in the direction of flow 12 cooling medium of from about 7.63 mm 2.
- FIGS. 2 and 3 Further, purely exemplary dimensions are given in FIGS. 2 and 3.
- a tube section taper 8 in the cooling fluid flow direction 12 to an inner diameter of approximately 4.2 mm results in a conversion of the potential pressure energy in the tube section with a larger diameter into additional kinetic energy.
- the outlet sectors 13 are delimited by the rounded outer contour of the inner part 11, respective adjacent webs 10 and the hollow cylindrical inner wall 14 of the nozzle outlet mouth 15.
- the central axis 16 of the nozzle tube section 8 runs approximately congruently with the position
- the thickness of the web is approximately 0.8 mm and thus makes up less than one fifth of the diameter of the outlet cross section or the outlet mouth 15 of the spray nozzle 5.
- the distances between the individual cooling fluid outlet sectors 13 in the circumferential direction of the tube are kept sufficiently small by the
- the cooling fluid flow is thus initially divided into the individual partial jets 17 by means of the fragmentation insert 9 when the nozzle exits.
- a bulge 18 of the outer is also marked Radiation contour, which can be attributed to diverging beam spreading tendencies that exist per se. These are compensated for by the vacuum inner region 7, which gives rise to stronger forces on the cooling fluid jet directed into the jet interior.
- the individual partial beams are not drawn in the longitudinal view of FIG. 5 because they would also not be visible to the human eye in reality.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10320576 | 2003-05-07 | ||
PCT/EP2004/050711 WO2004099580A1 (de) | 2003-05-07 | 2004-05-05 | Spritzdüse zur kolbenkühlung bei einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1629182A1 true EP1629182A1 (de) | 2006-03-01 |
EP1629182B1 EP1629182B1 (de) | 2006-08-30 |
Family
ID=33426703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04731186A Expired - Lifetime EP1629182B1 (de) | 2003-05-07 | 2004-05-05 | Spritzdüse zur kolbenkühlung bei einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070108315A1 (de) |
EP (1) | EP1629182B1 (de) |
AT (1) | ATE338201T1 (de) |
DE (1) | DE502004001368D1 (de) |
WO (1) | WO2004099580A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004057626B4 (de) * | 2004-11-30 | 2014-02-06 | Mahle International Gmbh | Kolbenspritzdüse |
DE102007029993A1 (de) * | 2007-06-28 | 2009-01-08 | Mahle International Gmbh | Kolbenspritzdüse |
CN111120065A (zh) * | 2019-11-19 | 2020-05-08 | 潍柴动力股份有限公司 | 冷却喷嘴及提高打靶效率的方法 |
DE102021115936A1 (de) * | 2020-07-08 | 2022-01-13 | Transportation Ip Holdings, Llc | Kolbenkühldüse |
WO2023193885A1 (en) * | 2022-04-05 | 2023-10-12 | Wärtsilä Finland Oy | A nozzle for a cooling arrangement of a piston in an internal combustion piston engine and a cooling arrangement for a piston of an internal combustion piston engine |
WO2024205808A1 (en) * | 2023-03-27 | 2024-10-03 | Cummins Inc. | Piston cooling nozzle for an internal combustion engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US597842A (en) * | 1898-01-25 | Faucet | ||
US1744250A (en) * | 1927-06-13 | 1930-01-21 | Sulzer Ag | Cooling device for reciprocating pistons |
US3275248A (en) * | 1964-08-07 | 1966-09-27 | Spraying Systems Co | Modified full cone nozzle |
US3486700A (en) * | 1967-12-14 | 1969-12-30 | L N B Co | Nozzle |
US4043397A (en) * | 1975-09-22 | 1977-08-23 | Glowienke Richard A | Fire fighting equipment |
US4408575A (en) * | 1981-01-23 | 1983-10-11 | Caterpillar Tractor Co. | Nozzle assembly for controlled spray |
DE19634742A1 (de) * | 1996-08-28 | 1998-03-05 | Deutz Ag | Kolbenspritzdüse für eine Brennkraftmaschine |
US5887789A (en) * | 1997-06-12 | 1999-03-30 | The Butcher Company | Foam reduction system |
-
2004
- 2004-05-05 DE DE502004001368T patent/DE502004001368D1/de not_active Expired - Lifetime
- 2004-05-05 US US10/555,151 patent/US20070108315A1/en not_active Abandoned
- 2004-05-05 WO PCT/EP2004/050711 patent/WO2004099580A1/de active Application Filing
- 2004-05-05 EP EP04731186A patent/EP1629182B1/de not_active Expired - Lifetime
- 2004-05-05 AT AT04731186T patent/ATE338201T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004099580A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004099580A1 (de) | 2004-11-18 |
DE502004001368D1 (de) | 2006-10-12 |
US20070108315A1 (en) | 2007-05-17 |
EP1629182B1 (de) | 2006-08-30 |
ATE338201T1 (de) | 2006-09-15 |
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