DK144835B - CYLINDER INJECTION WITH FLUID COOLING FOR STAMP COMBUSTION ENGINES - Google Patents
CYLINDER INJECTION WITH FLUID COOLING FOR STAMP COMBUSTION ENGINES Download PDFInfo
- Publication number
- DK144835B DK144835B DK158279AA DK158279A DK144835B DK 144835 B DK144835 B DK 144835B DK 158279A A DK158279A A DK 158279AA DK 158279 A DK158279 A DK 158279A DK 144835 B DK144835 B DK 144835B
- Authority
- DK
- Denmark
- Prior art keywords
- cylinder
- combustion engines
- stamp
- cylinder injection
- fluid cooling
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title description 6
- 238000001816 cooling Methods 0.000 title description 4
- 239000012530 fluid Substances 0.000 title 1
- 238000002347 injection Methods 0.000 title 1
- 239000007924 injection Substances 0.000 title 1
- 238000009413 insulation Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Description
i 144836 1 Opfindelsen angår en cylinderindsats til stempelforbrændingsmotorer og af den i krav l's indledning angivne art.The invention relates to a cylinder insert for piston combustion engines and of the kind specified in the preamble of claim 1.
5 Ved stempelforbrændingsmotorer kan det forekomme, at temperaturen på cylinderens løbeflade på grund af kølevirkningen fra kølemediet bliver nedsat så meget, at den kommer ned under dugpunktet for forbrændingsgasserne. Når der anvendes stærkt svovlholdige brænd-10 stoffer, kan dette på grund af svovlsyredannelse føre til korrosioner, hvad der sammen med friktionspåvirkningen på grund af stempelringene, navnlig i området for de øverste stempelringe ved stemplets øverste dødpunkt, kan bevirke et stærkt slid på løbefladen i cy-15 linderindsatsen.5 With piston combustion engines it may occur that the temperature of the cylinder's running surface due to the cooling effect of the refrigerant is reduced so much that it falls below the dew point of the combustion gases. When highly sulfur-containing fuels are used, this can result in corrosion due to sulfuric acid formation, which, together with the frictional action due to the piston rings, especially in the region of the upper piston rings at the piston's top dead center, can cause a strong wear on the tread surface. the cylindrical insert.
Fra dansk patent nr. 67.844 er det kendt at anbringe en lokal varmeisolering på en våd cylinderforings yderside for at undgå overdreven køling, der i visse til-20 fælde kan bevirke dugdannelser i cylinderens indre og med deraf følgende korrosionsskader. Den herfra kendte teknik kan ikke umiddelbart anvendes til cylinderindsatse til stempelforbrændingsmotorer der køles med et strømmende kølemiddel der ledes gennem boringer i cy-25 linderindsatsen.From Danish Patent No. 67,844, it is known to place a local heat insulation on the outside of a wet cylinder liner to avoid excessive cooling, which can in some cases cause dew formation in the interior of the cylinder and consequent corrosion damage. The prior art cannot immediately be used for cylinder inserts for piston combustion engines cooled with a flowing refrigerant passed through bores in the cylinder insert.
Den foreliggende opfindelse tager sigte på at angive en cylinderindsats af den omhandlede art, hvor man på særlig simpel og enkel måde foretager isoleringen mod dug-30 punktskondens, og dette opnås ifølge opfindelsen ved at indsatsen er udformet som angivet i krav l's kendetegnende del.The present invention aims to provide a cylinder insert of the kind in which insulation is performed in a particularly simple and simple manner against the dew point condenser, and this is achieved according to the invention in that the insert is designed as defined in the characterizing part of claim 1.
Ved på simpel måde at anbringe et kunststofrør i køle-35 boringerne får man nedsat varmestrømmen fra cylinder- 2By simply placing a plastic tube in the cooling bores, the heat flow from the cylinder 2 is reduced.
U483SU483S
1 rummet til kølemidlet. Man kan vælge forskellig isole-ringsgrad, alt efter om man anvender kunststofrør eller en luftspalte som isoleringsmiddel.1 room for the refrigerant. Different insulation degrees can be chosen depending on whether plastic tubing or an air gap is used as an insulating agent.
5 Med denne teknik får man desuden et isoleringsmiddel, der på simpel måde kan udskiftes.5 This technique also provides an insulating agent which can be replaced in a simple manner.
Opfindelsen forklares nærmere under henvisning til tegningen, på hvilken 10 fig, 1 viser et aksialsnit gennem den øverste del af en udførelsesform for cylinder-indsatsen, og 15 fig. 2 og 3 hver sit aksialsnit gennem en en boring med forskellige varmeisoleringslag.The invention is further explained with reference to the drawing, in which 10 fig. 1 shows an axial section through the upper part of an embodiment of the cylinder insert, and 15 fig. 2 and 3 each have their axial section through a bore with different heat insulation layers.
I fig. 1 er en øverste flangeagtigt fortykket del 1 i 20 en cylinderindsats i en stempelforbrændingsmotor, f. eks. en firtaktsdieselmotor, forsynet med flere boringer 3, der på i og for sig kendt måde forløber retlinet og skråt i forhold til en flade, der står vinkelret på cylinderens akse. Som følge af denne anbringelse af 25 boringerne kan man i fig. 1 se to af dem i snit. Ved den øverste ende står hver af boringerne 3 over en radial boring 4 i forbindelse med en yderflade på flangen 1. I cylinderindsatsen 2 er et stempel 5 lejret bevægeligt op og ned, af hvilket stempel i fig. 1 kun den 30 øverste del med de tre øverste stempelringe 6 er vist.In FIG. 1, a top flange-like thickened part 1 of 20 is a cylinder insert in a piston-combustion engine, for example a four-stroke diesel engine, provided with a plurality of bores 3, which in a known manner extend rectilinear and oblique to a surface which is perpendicular on the axis of the cylinder. As a result of this arrangement of the 25 bores, FIG. 1 see two of them in section. At the upper end, each of the bores 3 faces a radial bore 4 in connection with an outer surface of the flange 1. In the cylinder insert 2 a piston 5 is movably mounted up and down, of which piston in FIG. 1 only the top 30 with the top three piston rings 6 are shown.
Et oven over stemplet 5 værende cylinderrum 8, i hvilket forbrændingen finder sted, er opefter begrænset af et ikke vist cylinderdæksel. Cylinderindsatsen 2 er på i og for sig kendt, ikke vist måde anbragt i et krum-35 taphus, i hvilket et flydende kølemiddel, f.eks. vand, 3 144835 1 cirkulerer. Kølevandet strømmer ind i de i fig. 1 ne-derste ender på boringerne 3 og forlader cylinderindsatsen 2 gennem boringerne 4, fra hvilke det over ikke viste ledninger strømmer til kølevandskanaler i eylin-5 derdækslet.A cylinder compartment 8 located above the piston 5, in which the combustion takes place, is subsequently limited by a cylinder cover not shown. The cylinder insert 2 is in a known manner, not shown, arranged in a crankcase, in which a liquid refrigerant, e.g. water, 3 144835 1 circulates. The cooling water flows into those of FIG. 1 at the bottom ends of the bores 3 and leaves the cylinder insert 2 through the bores 4, from which the wires shown above do not flow to cooling water ducts in the cylinder 5 cover.
Ifølge opfindelsen er der i hver af boringerne 3 anbragt et varmeisolerende lag, der ifølge fig. 1 og 2 er dannet af en luftspalte 10. Denne luftspalte er an-10 bragt mellem en begrænsningsflade på boringen 3 og et i boringen anbragt metalrør 11, der på sin største del af sin længde har noget mindre diameter end boringen. To fortykkede ender på røret 11 har omtrent samme diameter som boringen 3, så at luftspalten 10 på begge si-15 der er lukket af de fortykkede ender på røret 11, idet der i området for disse fortykkede ender kan anvendes i og for sig kendte tætningsmidler. På grund af luftspalten 10 opnås der en nedsættelse af varmestrømmen fra cylinderrummet 8 til det kølevand, der strømmer 20 gennem røret 11, således at temperaturen på løbefladen 9 i cylinderindsatsen ligger højere end ved de kendte kølede cylinderindsatser, så at der ikke kan ske nogen nedsættelse af temperaturen under dugpunktet ved denne flade.According to the invention, a heat-insulating layer is arranged in each of the bores 3, which according to FIG. 1 and 2 are formed by an air gap 10. This air gap is disposed between a restriction surface of the bore 3 and a metal tube 11 disposed in the bore, which at its largest part of its length has a somewhat smaller diameter than the bore. Two thickened ends of the pipe 11 have about the same diameter as the bore 3, so that the air gap 10 on both sides is closed by the thickened ends of the pipe 11, since in the region of these thickened ends sealing means known per se can be used. . Due to the air gap 10, a reduction of the heat flow from the cylinder compartment 8 to the cooling water flowing 20 through the pipe 11 is obtained, so that the temperature of the running surface 9 in the cylinder insert is higher than that of the known chilled cylinder inserts, so that no reduction can occur. of the temperature below the dew point at this surface.
2525
Samme virkning opnås ved den i fig. 3 viste udførelsesform, ved hvilken det varmeisolerende lag i hver boring 3 består af et kunststofrør 15, der fortrinsvis ligger an mod en begrænsningsflade på boringen 3. I aksial 30 retning er kunststofrøret 15 fastholdt ved hjælp af fjedrende ringe 16 og 17, der ved en spredevirkning lægger sig an mod boringen. Kunststofrøret 15 støder med sine to endeflader mod ringene 16 og 17. Som materiale for kunststofrøret 15 har f.eks. polyvinyliden-35 fluorid (PVDF) vist sig særligt godt egent.The same effect is obtained from the one shown in FIG. 3, in which the heat-insulating layer in each bore 3 consists of a plastic tube 15, which preferably abuts on a limiting surface of the bore 3. In axial 30 direction, the plastic tube 15 is secured by resilient rings 16 and 17, which spreading effect rests on the bore. The plastic tube 15 abuts with its two end faces against the rings 16 and 17. As material for the plastic tube 15, e.g. polyvinylidene fluoride (PVDF) proved particularly well suited.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH444478 | 1978-04-25 | ||
| CH444478A CH627523A5 (en) | 1978-04-25 | 1978-04-25 | CYLINDER INSERT OF A RECIPROCATING ENGINE. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK158279A DK158279A (en) | 1979-10-26 |
| DK144835B true DK144835B (en) | 1982-06-14 |
| DK144835C DK144835C (en) | 1982-11-08 |
Family
ID=4276238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK158279A DK144835C (en) | 1978-04-25 | 1979-04-18 | CYLINDER INJECTION WITH FLUID COOLING FOR STAMP COMBUSTION ENGINES |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS54142413A (en) |
| AT (1) | AT378040B (en) |
| CH (1) | CH627523A5 (en) |
| DE (1) | DE7911903U1 (en) |
| DK (1) | DK144835C (en) |
| FR (1) | FR2424416A1 (en) |
| GB (1) | GB2019490B (en) |
| IT (1) | IT1112853B (en) |
| NL (1) | NL186334C (en) |
| SE (1) | SE441612B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570439B1 (en) * | 1984-09-20 | 1989-03-31 | Semt | METHOD AND DEVICE FOR REGULATING THE TEMPERATURE OF THE INTERNAL SURFACE OF THE CYLINDER LINERS OF AN INTERNAL COMBUSTION ENGINE |
| DK277690D0 (en) * | 1990-11-22 | 1990-11-22 | Man B & W Diesel Gmbh | CYLINDER LINING FOR A WATER-COOLED COMBUSTION ENGINE |
| DK170447B1 (en) * | 1993-05-26 | 1995-09-04 | Man B & W Diesel Gmbh | Process and internal combustion engine |
| KR20010054470A (en) * | 1999-12-07 | 2001-07-02 | 이계안 | Cylinder bore structure to prevent carbon daposit on topland of piston |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1616941A (en) * | 1925-01-14 | 1927-02-08 | Packard Motor Car Co | Internal-combustion engine |
| FR1062865A (en) * | 1951-09-12 | 1954-04-28 | Gallimberti & Co | Improvements to liquid fuel engines, in particular self-ignition |
| GB769254A (en) * | 1954-07-30 | 1957-03-06 | Goetzewerke | Improvements relating to cooling chamber walls |
| CH545914A (en) * | 1971-12-15 | 1974-02-15 | ||
| GB1561638A (en) * | 1975-12-30 | 1980-02-27 | Shell Int Research | Liquidcooling system of internal combustion engines |
-
1978
- 1978-04-25 CH CH444478A patent/CH627523A5/en not_active IP Right Cessation
- 1978-05-05 AT AT0325878A patent/AT378040B/en not_active IP Right Cessation
-
1979
- 1979-03-28 NL NL7902424A patent/NL186334C/en not_active IP Right Cessation
- 1979-04-18 DK DK158279A patent/DK144835C/en not_active IP Right Cessation
- 1979-04-20 GB GB7913755A patent/GB2019490B/en not_active Expired
- 1979-04-23 IT IT22045/79A patent/IT1112853B/en active
- 1979-04-23 SE SE7903549A patent/SE441612B/en not_active IP Right Cessation
- 1979-04-24 FR FR7910303A patent/FR2424416A1/en active Granted
- 1979-04-24 DE DE19797911903U patent/DE7911903U1/en not_active Expired
- 1979-04-24 JP JP5080179A patent/JPS54142413A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DK144835C (en) | 1982-11-08 |
| FR2424416A1 (en) | 1979-11-23 |
| DE7911903U1 (en) | 1979-10-04 |
| IT7922045A0 (en) | 1979-04-23 |
| NL7902424A (en) | 1979-10-29 |
| SE441612B (en) | 1985-10-21 |
| NL186334C (en) | 1995-01-16 |
| GB2019490A (en) | 1979-10-31 |
| GB2019490B (en) | 1982-10-06 |
| SE7903549L (en) | 1979-10-26 |
| FR2424416B1 (en) | 1985-03-29 |
| ATA325878A (en) | 1984-10-15 |
| NL186334B (en) | 1990-06-01 |
| JPS54142413A (en) | 1979-11-06 |
| DK158279A (en) | 1979-10-26 |
| CH627523A5 (en) | 1982-01-15 |
| IT1112853B (en) | 1986-01-20 |
| AT378040B (en) | 1985-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUP | Patent expired |