WO2001018375A1 - Culasse de cylindre pour un moteur a combustion interne a pistons - Google Patents
Culasse de cylindre pour un moteur a combustion interne a pistonsInfo
- Publication number
- WO2001018375A1 WO2001018375A1 PCT/EP2000/007868 EP0007868W WO0118375A1 WO 2001018375 A1 WO2001018375 A1 WO 2001018375A1 EP 0007868 W EP0007868 W EP 0007868W WO 0118375 A1 WO0118375 A1 WO 0118375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder head
- cast iron
- cylinder
- gas
- internal combustion
- Prior art date
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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
-
- 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
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0436—Iron
- F05C2201/0439—Cast iron
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
- F05C2203/0808—Carbon, e.g. graphite
Definitions
- the cylinder blocks are made of cast iron with lamellar graphite, both with regard to the costs and with regard to the particular advantages of the material.
- the high damping capacity and, if the cast skin is preserved, the corrosion resistance also play a major role.
- a disadvantage of cast iron with lamellar graphite is that the branched graphite lamella interrupt the metallic matrix, so that the tensile strength is limited and the material has no ductility.
- the invention is based on the object of Piston internal combustion engine to create a cylinder head that corresponds to the material properties of the material of the engine block.
- a cylinder head for a piston internal combustion engine made of cast iron with Ver ikulargraphit with each cylinder at least one gas inlet channel with at least one assigned inlet valve and at least one gas outlet channel with at least one assigned outlet valve.
- vermicular graphite offers the advantage that on the one hand both the cylinder block and the cylinder head consist of practically one material and are therefore approximately identical in terms of their thermal properties.
- the particular advantage of a cylinder head made of cast iron with vermicular graphite is that on the one hand this cast iron has approximately the ductility and tensile strength of a cast iron with spheroidal graphite and can therefore be exposed to dynamic and pulsating loads.
- the graphite lamellae at vermicular graphite are no longer tapering at their ends, but rather thickened at the ends as a result of a special melt treatment. This avoids the notch effect in cast iron with laminar graphite due to the tapering graphite flakes, so that a cast iron with vermicular graphite exhibits measurable elongation and thus the good properties of a cast iron with flake graphite, such as high damping capacity, with those of spheroidal graphite cast iron. namely improvement of ductility, is united.
- a cast iron with vermicular graphite retains the good castability of a high-carbon cast iron material, it is possible to cast a casting as complex as a cylinder head, even in a thin-walled version. This creates ideal conditions for casting a large series in sand casting, since the use of stable cores is possible. Since vermicular graphite cast iron has a low thermal conductivity, the heat exchange between the hot exhaust gas of the piston internal combustion engine and the
- Engine coolant coolant lower than when using an aluminum cylinder head. This means that at higher exhaust gas temperatures there is also a higher energy supply for a downstream turbocharger, so that the efficiency of the piston internal combustion engine can be improved.
- a cylinder head of the type according to the invention is therefore particularly suitable for piston internal combustion engines with high hem combustion pressure, ie supercharged piston internal combustion engines with spark ignition and spark ignition.
- a particular advantage of the design of a cylinder head for a piston internal combustion engine from a cast iron with vermicular graphite is further that in view of the strength properties of this material on the one hand and the special design of the iron matrix in connection with the graphite deposits on the other hand, the need for guide sleeves for the cylinder head is eliminated to use the gas exchange valves made of a different material. Rather, it is possible, according to the invention, to incorporate the guides for the gas exchange valves directly into the cast iron material, since the wear resistance of a cast iron with vermicular graphite in connection with the self-lubricating properties via the graphite deposits in connection with the engine oil lubrication fulfills the required service life.
- valve seats of the gas exchange valves are incorporated directly into the cylinder head material.
- the favorable material properties of a cast iron with vermicular graphite offer the possibility that valve seat rings made of a different material can be omitted and the valve seats can be worked directly into the material of the cylinder head.
- the cylinder head is formed by pearlitic cast iron with vermicular graphite. This offers the possibility of inductively hardening the guides for the gas exchange valves and / or the areas of the valve seats.
- the good castability of high-carbon types of cast iron which also includes a cast iron with vermicular graphite, also offers the advantage that the wall thicknesses of the inlet channels and the outlet channels and predominantly all web-shaped and / or - have wall-shaped areas of a cylinder head continuously about 3 mm. Without changing the structural strength, it is possible to create cylinder heads that can withstand the required mechanical and / or thermal stresses, but still have a low weight.
- the cylinder head of the type according to the invention is particularly advantageous for piston internal combustion engines in which two intake valves and two exhaust valves are provided per cylinder.
- a very complicated design is required, in particular for the geometry of the gas inlet with two separate gas inlet channels.
- Fig. 1 shows a partial horizontal section through a cylinder head at the height of the gas inlet and gas outlet channels. the line I-I in Fig. 2,
- Fig. 2 is a vertical section along the line II-II in
- Fig. 1 on a larger scale.
- FIG. 1 The partial horizontal section shown in FIG. 1 through a cylinder head of a piston internal combustion engine with auto-ignition, which represents the area above an indicated cylinder 1, shows that cylinder 1 is assigned two gas inlet openings 2.1, 2.2, and two gas outlet openings 3.1, 3.2, respectively, are provided for the corresponding gas exchange valves. An opening 5 is then provided in the region of the cylinder axis 4 for the introduction of an injection nozzle.
- Separate gas inlet channels 6.1 and 6.2 are correspondingly assigned to the two gas inlet openings 2.1 and 2.2, the gas inlet channel 6.1 being designed in the transition to the gas inlet opening 2.1 as a so-called spiral inlet in order to impart a swirl to the gas flowing into the cylinder 1 during the intake stroke, which leads to an improved Mixing of the fuel-air mixture in the cylinder causes.
- the gas outlet openings 3.1 and 3.2 open into a common gas outlet channel 7.
- Both the gas inlet ducts 6.1 and 6.2 and the gas outlet duct 7 are each provided at the end with a flange region 8 or 9, to which the air intake tract on the one hand and the gas outlet tract on the other hand can be flanged.
- the cylinder head in the region of a cylinder is provided with four through holes 10 which are each guided through so-called columns 11.
- a vertical section along the line II-II in Fig. 1 is shown on a larger scale.
- the sectional view shows that the gas inlet openings, here the gas inlet opening 2.1 and the gas outlet openings, here the gas outlet opening 3.1, are designed as valve seats 16 in their transition region into the cylinder space 15.
- the exemplary embodiment shown here consists of pearlitic gray cast iron with Verimikulargraphit, so that the valve seats 16 for the intake valve 17 and the exhaust valve 18, which are only indicated schematically by dash-dotted lines, are incorporated directly into the material of the cylinder head. The introduction of separate valve seat rings can thus be omitted.
- the area of the cylinder head material that delimits the valve seats 16 is inductively hardened.
- sleeve-shaped guides 19 for the stems of the gas exchange valves 17 and 18 are formed in the cylinder head. Due to the special material properties of cast iron with vermicular graphite, the use of special guide sleeves, for example made of bronze or steel, can also be omitted here, so that the stems of the gas exchange valves 17 and 18 can be guided directly over the molded sleeves 19 of the cylinder head.
- the cylinder head provided for a piston internal combustion engine with auto-ignition is flat on its side facing the schematically indicated engine block 20, with the lower surface 21 of the cylinder head forming a flat combustion chamber roof.
- the area of the gas inlet and gas outlet openings would have to be designed in such a way that they each run into a roof of the combustion chamber which rises in a roof-shaped manner to the cylinder axis 14.
- the necessary spark plug would then have to be arranged in the opening 5 to be designed accordingly.
- the injection nozzle between the two gas inlet channels 6.1 and 6.2 would have to be arranged obliquely into the cylinder space, as indicated by the opening 22 in FIG. 1.
- the region of the cylinder head which is arranged above the lower surface 21 and surrounds the gas inlet channels 6 and the gas outlet channels 7 is designed as a coolant passage 12, so that the coolant both below the gas inlet channels 6 and the gas outlet channels 7 and above the
- Gas inlet channels 6 and the gas outlet channels 7 can be passed through accordingly.
- the wall thicknesses of the gas inlet channels 6 and the gas outlet channels 7 and predominantly all other web-shaped and / or wall-shaped parts are essentially of the same wall thickness, a wall thickness of 3 mm being maintained here can.
- the coolant of the piston internal combustion engine flows around the gas outlet channels 7. Since cast iron with vermicular graphite has a reduced thermal conductivity compared to other cylinder head materials, for example aluminum, a correspondingly smaller amount of heat is extracted from the exhaust gas in this area, so that a higher energy supply is available for an exhaust gas turbine of a downstream turbocharger.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Culasse de cylindre, pour un moteur à combustion interne à pistons, qui est constituée de fonte avec du graphite vermiculaire. Par cylindre (1), ladite culasse comporte au moins un canal d'admission (6) de gaz doté d'au moins une soupape d'admission (17) associée et au moins un canal d'échappement (7) de gaz doté d'au moins une soupape d'échappement (18) associée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999142780 DE19942780A1 (de) | 1999-09-08 | 1999-09-08 | Zylinderkopf für eine Kolbenbrennkraftmaschine |
DE19942780.1 | 1999-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001018375A1 true WO2001018375A1 (fr) | 2001-03-15 |
Family
ID=7921153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/007868 WO2001018375A1 (fr) | 1999-09-08 | 2000-08-11 | Culasse de cylindre pour un moteur a combustion interne a pistons |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19942780A1 (fr) |
WO (1) | WO2001018375A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004030555B4 (de) * | 2003-07-10 | 2008-05-08 | Hyundai Motor Co. | Einlasskanal eines Motors mit magerer Verbrennung und Kern zur Herstellung desselben |
US11473521B1 (en) | 2021-07-15 | 2022-10-18 | Deere & Company | Methods of forming a thermally isolated exhaust port |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060785A1 (de) * | 2010-11-25 | 2012-05-31 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Zylinderkopf einer Brennkraftmaschine |
US20170211508A1 (en) * | 2014-06-30 | 2017-07-27 | Cummins Inc. | System and method for valve size ratio and igniter placement |
DE102021210268A1 (de) | 2021-09-16 | 2023-03-16 | Mahle International Gmbh | Schichtgesinterter Ventilsitzring, Verfahren zu dessen Herstellung, Kombinationen damit und deren Verwendung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL84224C (fr) * | ||||
CH199276A (de) * | 1937-08-07 | 1938-08-15 | Sulzer Ag | Brennkraftmaschine mit Auspuffventil, insbesondere mit Leistungssteigerung durch Aufladung. |
US4544407A (en) * | 1981-03-03 | 1985-10-01 | George Fischer Aktiengesellschaft | Process for producing cast iron castings with a vermicular graphite structure |
EP0551805A1 (fr) * | 1991-12-18 | 1993-07-21 | AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List | Moteur à combustion interne à multiples cylindres avec une culasse |
WO1996024451A1 (fr) * | 1995-02-07 | 1996-08-15 | Sintercast Ab | Procede de fabrication de produits de fonte coules d'un seul tenant et presentant des variations controlees de fer au graphite compacte et de fonte grise |
WO1999050467A1 (fr) * | 1998-03-27 | 1999-10-07 | Cgi-Promotion Ab | Procede de production de fer graphitique compacte (cgi) |
-
1999
- 1999-09-08 DE DE1999142780 patent/DE19942780A1/de not_active Withdrawn
-
2000
- 2000-08-11 WO PCT/EP2000/007868 patent/WO2001018375A1/fr unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL84224C (fr) * | ||||
CH199276A (de) * | 1937-08-07 | 1938-08-15 | Sulzer Ag | Brennkraftmaschine mit Auspuffventil, insbesondere mit Leistungssteigerung durch Aufladung. |
US4544407A (en) * | 1981-03-03 | 1985-10-01 | George Fischer Aktiengesellschaft | Process for producing cast iron castings with a vermicular graphite structure |
EP0551805A1 (fr) * | 1991-12-18 | 1993-07-21 | AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List | Moteur à combustion interne à multiples cylindres avec une culasse |
WO1996024451A1 (fr) * | 1995-02-07 | 1996-08-15 | Sintercast Ab | Procede de fabrication de produits de fonte coules d'un seul tenant et presentant des variations controlees de fer au graphite compacte et de fonte grise |
WO1999050467A1 (fr) * | 1998-03-27 | 1999-10-07 | Cgi-Promotion Ab | Procede de production de fer graphitique compacte (cgi) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004030555B4 (de) * | 2003-07-10 | 2008-05-08 | Hyundai Motor Co. | Einlasskanal eines Motors mit magerer Verbrennung und Kern zur Herstellung desselben |
US11473521B1 (en) | 2021-07-15 | 2022-10-18 | Deere & Company | Methods of forming a thermally isolated exhaust port |
Also Published As
Publication number | Publication date |
---|---|
DE19942780A1 (de) | 2001-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0016204B1 (fr) | Culasse de cylindre obtenu par coullee sous pression pour moteurs a combustion interne refroidis a l'eau | |
DE10318436A1 (de) | Kraftstoffeinspritzventil | |
DE3838461A1 (de) | Pulvermetallurgischer werkstoff auf kupferbasis und dessen verwendung | |
DE102007062347B4 (de) | Kühlanordnung für einen Zylinderkopf einer Brennkraftmaschine | |
DE19960626A1 (de) | Kolbenbrennkraftmaschine mit unterteiltem Gaseinlaßkanal | |
WO2005093244A1 (fr) | Piston pour moteur a combustion interne, procede pour produire un piston et utilisation d'un alliage de cuivre pour produire un piston | |
DE4409750B4 (de) | Zylinderblock einer flüssigkeitsgekühlten Brennkraftmaschine mit einem Magnesium-Gehäuse | |
EP1412625B1 (fr) | Culasse de cylindre pour un moteur a combustion interne | |
WO2001018375A1 (fr) | Culasse de cylindre pour un moteur a combustion interne a pistons | |
AT402431B (de) | Zweitakt-brennkraftmaschine | |
EP3786437B1 (fr) | Piston et cylindre d'un moteur à combustion interne et moteur à combustion interne | |
EP1854966B1 (fr) | Tête de cylindre pour un moteur à combustion interne à allumage commandé | |
DE3040952A1 (de) | Ansaugsystem fuer eine brennkraftmaschine | |
EP3199770A1 (fr) | Soupape creuse métallique pour un moteur à combustion interne d'un véhicule utilitaire | |
DE19734007A1 (de) | Zylinderkopf zur Verwendung für Kurbelgehäuse mit unterschiedlichen Zylinderbohrungsdurchmessern | |
DE3935497C2 (fr) | ||
DE102015104591A1 (de) | Abgaskanal einer Brennkraftmaschine, insbesondere mit Abgasturbolader, sowie Brennkraftmaschine mit einem solchen Abgaskanal | |
DE2162397B2 (de) | Flüssigkeitsgekühlter Zylinderkopf einer Kolbenbrennkraftmaschine | |
DE4141063C2 (de) | Zylinderkopf für Verbrennungsmotoren | |
DE102011001231A1 (de) | Injektorhülsenform mit Kühlung | |
EP1034364B1 (fr) | Procede de verification et reglage de l'effet de canaux de turbulence dans des moteurs a combustion interne a cylindres multiples, notamment dans des moteurs a injection directe | |
DE102015201999A1 (de) | Hubkolbenmotor, Kraftfahrzeug | |
DE2952490A1 (de) | Zylinderkopf fuer kompressionsgezuendete brennkraftmaschinen mit vorbrennkammern | |
DE102021128790A1 (de) | Kolbenanordnung für einen Verbrennungsmotor | |
DE102020113626A1 (de) | Verbrennungsmotor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): BR JP MX US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |