EP0146731A2 - Corps céramique creux tubulaire - Google Patents
Corps céramique creux tubulaire Download PDFInfo
- Publication number
- EP0146731A2 EP0146731A2 EP84113210A EP84113210A EP0146731A2 EP 0146731 A2 EP0146731 A2 EP 0146731A2 EP 84113210 A EP84113210 A EP 84113210A EP 84113210 A EP84113210 A EP 84113210A EP 0146731 A2 EP0146731 A2 EP 0146731A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic body
- thickening
- hollow
- body according
- tubular ceramic
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 41
- 230000008719 thickening Effects 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 5
- 238000005266 casting Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
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
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
- F02F1/4271—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels with an exhaust liner
-
- 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
- F02B77/02—Surface coverings of combustion-gas-swept parts
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
-
- 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
Definitions
- the invention relates to a hollow, tubular ceramic body for gas-carrying channels, preferably exhaust channels in a cylinder head of an internal combustion engine.
- Ceramic bodies of the type mentioned at the outset are cast into a cylinder head made, for example, of an aluminum alloy.
- this ceramic body is subjected to relatively high loads - casting, shrinking, solidification pressures - which require a rigid cross-sectional shape - circular, oval.
- Such a cross-sectional shape can hardly be realized over the entire length of, for example, a hot gas-carrying channel of the cylinder head, because the channel is constricted locally in the area of a bore for a valve guide (DE-AS 27 50 290).
- Such a constriction must be compensated for by the cross-sectional design of the channel in order to avoid a reduction in cross-section that would impair the gas flow.
- the object of the invention is therefore to take such precautions on a tubular, hollow ceramic body that on the one hand it can be adapted to the structural conditions in a channel and on the other hand withstands the loads occurring during casting.
- the ceramic body has such a strength that it withstands the stresses that occur when casting with the cylinder head.
- Zirconium oxide is suitable as the material for the thickening, the entire outer surface of the ceramic body also being coated with this zirconium oxide, for example applied by plasma spraying.
- This coating which has a roughened surface, ensures good pouring behavior of the ceramic body, and it also supports its thermal insulation with respect to the cylinder head. If the ceramic body has two pipe sections which merge into a single piece of pipe - pants shape - and if the thickening is provided as a support between the pipe sections, it is ensured that this ceramic body can withstand the pressures that occur when the cylinder head is cast without damage.
- a hollow, tubular ceramic body 1 (Tialit ceramic) is shown, which is inserted into an outlet channel 2, that is, a hot gas-carrying channel of a cylinder head 3 shown only in regions and made of a cast aluminum alloy.
- the ceramic body 1 has an essentially constant wall thickness, which is produced by the manufacturing process.
- the cylinder head 3 has a vertical bore 4, which is provided with a sleeve-like extension 5 projecting into the exhaust port 2.
- a guide device 6 for a valve 7, which controls the gas flow in the ceramic body 1, is pressed into the bore 4.
- the ceramic body 1 In the region of the bore 4 or adjacent to it, the ceramic body 1 has a constriction 8, which results from the connection of the ceramic body to the bore 4 or the extension 5 and its flow-optimized cross-sectional shape.
- the constriction 8 is filled with a thickening 9 for reasons of strength, the outside 10 of which is raised or convex.
- the thickening 9 is adapted outside the constriction 8 at B and C to the shape of the ceramic body 1.
- the ceramic body 1 has a convex shape in the region of the thickening 9, which is similar to the design of the ceramic body 1 on the opposite side 11.
- the thickening 9 consists of the material zirconium oxide, which is applied by plasma spraying; the ceramic body 1 is provided on the outside with a coating 12 made of said material.
- a ceramic body 13 has two mutually spaced pipe sections 14, 15, which merge at 16 into a single piece of pipe 17 (pants shape). Both pipe sections 14, 15 run within outlet channels of a cylinder, not shown, i. that is, there are two exhaust valves per ZyLinder. So that the forces occurring during casting at D and E on the ceramic body 13 do not cause any damaging moments, a thickening 18 is provided between the pipe sections 14, 15, which performs a supporting function. According to FIG. 5, the thickening 18 fills the space between the pipe sections 14, 15, the borders 19, 20 of the thickening also being raised and passing into the shape of the pipe sections 14, 15. The thickening extends over the height and the length of the pipe sections 14, 15.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust Silencers (AREA)
- Ceramic Products (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3346394 | 1983-12-22 | ||
DE3346394A DE3346394C2 (de) | 1983-12-22 | 1983-12-22 | Hohler, rohrartiger Keramikkörper |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0146731A2 true EP0146731A2 (fr) | 1985-07-03 |
EP0146731A3 EP0146731A3 (en) | 1986-08-20 |
EP0146731B1 EP0146731B1 (fr) | 1989-01-11 |
Family
ID=6217691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84113210A Expired EP0146731B1 (fr) | 1983-12-22 | 1984-11-02 | Corps céramique creux tubulaire |
Country Status (4)
Country | Link |
---|---|
US (1) | US4648243A (fr) |
EP (1) | EP0146731B1 (fr) |
JP (1) | JPS60169655A (fr) |
DE (2) | DE3346394C2 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3536804A1 (de) * | 1985-10-16 | 1987-04-16 | Audi Ag | Abblaseventil |
EP0285312A2 (fr) * | 1987-03-24 | 1988-10-05 | Ngk Insulators, Ltd. | Insert en matériau céramique pour coulage et revêtement céramique de tuyaux d'échappement |
EP0292040A2 (fr) * | 1987-05-16 | 1988-11-23 | Ae Plc | Chemise de cylindre |
US5260116A (en) * | 1987-03-24 | 1993-11-09 | Ngk Insulators, Ltd. | Ceramicm port liners |
GB2288210B (en) * | 1994-04-08 | 1998-09-09 | Ford Motor Co | Internal combustion engine |
WO2013045018A3 (fr) * | 2011-10-01 | 2014-01-23 | Volkswagen Aktiengesellschaft | Culasse munie d'un collecteur d'échappement intégré, destinée à un moteur à combustion interne, et procédé de fabrication d'une pièce coulée, en particulier d'une culasse pour un moteur à combustion interne |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706208C1 (de) * | 1987-02-26 | 1987-10-22 | Feldmuehle Ag | Rohrfoermig ausgebildeter Keramikkoerper |
DE3706207C1 (en) * | 1987-02-26 | 1988-10-06 | Feldmuehle Ag | Tubular ceramic body of aluminium titanate having an oxide-ceramic coating |
DE3706206C1 (en) * | 1987-02-26 | 1988-10-06 | Feldmuehle Ag | Tubular ceramic body of aluminium titanate having an oxide-containing coating and process for the production thereof |
JPS63268963A (ja) * | 1987-04-27 | 1988-11-07 | Ngk Insulators Ltd | セラミツクポ−トライナ− |
JPH01142547U (fr) * | 1988-03-24 | 1989-09-29 | ||
US5142863A (en) * | 1989-05-18 | 1992-09-01 | Honda Giken Kogyo Kabushiki Kaisha | Engine part provided with manifold type exhaust passage |
JP2790866B2 (ja) * | 1989-08-24 | 1998-08-27 | 日産自動車株式会社 | 燃焼装置の排気通路 |
US5137789A (en) * | 1990-12-03 | 1992-08-11 | Caterpillar Inc. | Composite ceramic and metal article |
US6125891A (en) * | 1996-03-15 | 2000-10-03 | Silicon Carbide Products, Inc. | Refractory u-bends and methods of manufacture |
CN106762194A (zh) * | 2017-01-24 | 2017-05-31 | 李斯特技术中心(上海)有限公司 | 一种自然吸气发动机的排气通道 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2308787A1 (fr) * | 1975-04-22 | 1976-11-19 | Honda Motor Co Ltd | Perfectionnements aux moteurs a combustion interne |
FR2365705A1 (fr) * | 1976-09-22 | 1978-04-21 | Audi Ag | Procede de fabrication d'un carter de moteur a combustion interne |
FR2408557A1 (fr) * | 1977-11-10 | 1979-06-08 | Rosenthal Technik Ag | Article refractaire et corps composite metal-ceramique en titanate d'aluminium silicate |
EP0119499A1 (fr) * | 1983-03-18 | 1984-09-26 | Feldmühle Aktiengesellschaft | Culasse de cylindre et procédé de fabrication |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1954638A (en) * | 1932-02-18 | 1934-04-10 | Rudolph W Loeffler | Method of making enameled radiators |
US2635329A (en) * | 1950-05-16 | 1953-04-21 | Magnaflux Corp | Method of detecting cracks in porous surfaces |
DE2549256C2 (de) * | 1975-11-04 | 1983-12-29 | Volkswagenwerk Ag, 3180 Wolfsburg | Wärmeisolierte Anordnung zur Durchleitung von unter hohen Temperaturen stehenden Gasen |
US4346556A (en) * | 1980-05-12 | 1982-08-31 | General Motors Corporation | Insulating engine exhaust port liner |
-
1983
- 1983-12-22 DE DE3346394A patent/DE3346394C2/de not_active Expired
-
1984
- 1984-11-02 EP EP84113210A patent/EP0146731B1/fr not_active Expired
- 1984-11-02 DE DE8484113210T patent/DE3476100D1/de not_active Expired
- 1984-12-20 JP JP59267607A patent/JPS60169655A/ja active Pending
- 1984-12-21 US US06/684,866 patent/US4648243A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2308787A1 (fr) * | 1975-04-22 | 1976-11-19 | Honda Motor Co Ltd | Perfectionnements aux moteurs a combustion interne |
FR2365705A1 (fr) * | 1976-09-22 | 1978-04-21 | Audi Ag | Procede de fabrication d'un carter de moteur a combustion interne |
FR2408557A1 (fr) * | 1977-11-10 | 1979-06-08 | Rosenthal Technik Ag | Article refractaire et corps composite metal-ceramique en titanate d'aluminium silicate |
EP0119499A1 (fr) * | 1983-03-18 | 1984-09-26 | Feldmühle Aktiengesellschaft | Culasse de cylindre et procédé de fabrication |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3536804A1 (de) * | 1985-10-16 | 1987-04-16 | Audi Ag | Abblaseventil |
EP0285312A2 (fr) * | 1987-03-24 | 1988-10-05 | Ngk Insulators, Ltd. | Insert en matériau céramique pour coulage et revêtement céramique de tuyaux d'échappement |
EP0285312A3 (en) * | 1987-03-24 | 1989-03-22 | Ngk Insulators, Ltd. | Ceramic materials to be insert-cast and ceramic port liners |
EP0437302A2 (fr) * | 1987-03-24 | 1991-07-17 | Ngk Insulators, Ltd. | Revêtement céramique pour des conduits |
EP0437302A3 (en) * | 1987-03-24 | 1991-08-07 | Ngk Insulators, Ltd. | Ceramic port liners |
US5055435A (en) * | 1987-03-24 | 1991-10-08 | Ngk Insulators, Ltd. | Ceramic materials to be insert-cast |
US5260116A (en) * | 1987-03-24 | 1993-11-09 | Ngk Insulators, Ltd. | Ceramicm port liners |
EP0292040A2 (fr) * | 1987-05-16 | 1988-11-23 | Ae Plc | Chemise de cylindre |
EP0292040A3 (en) * | 1987-05-16 | 1989-09-20 | Ae Plc | Cylinder liners |
GB2288210B (en) * | 1994-04-08 | 1998-09-09 | Ford Motor Co | Internal combustion engine |
WO2013045018A3 (fr) * | 2011-10-01 | 2014-01-23 | Volkswagen Aktiengesellschaft | Culasse munie d'un collecteur d'échappement intégré, destinée à un moteur à combustion interne, et procédé de fabrication d'une pièce coulée, en particulier d'une culasse pour un moteur à combustion interne |
EP2761157A2 (fr) * | 2011-10-01 | 2014-08-06 | Volkswagen Aktiengesellschaft | Culasse munie d'un collecteur d'échappement intégré, destinée à un moteur à combustion interne, et procédé de fabrication d'une pièce coulée, en particulier d'une culasse pour un moteur à combustion interne |
Also Published As
Publication number | Publication date |
---|---|
DE3346394C2 (de) | 1986-09-04 |
US4648243A (en) | 1987-03-10 |
EP0146731B1 (fr) | 1989-01-11 |
JPS60169655A (ja) | 1985-09-03 |
DE3346394A1 (de) | 1985-07-11 |
DE3476100D1 (en) | 1989-02-16 |
EP0146731A3 (en) | 1986-08-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0146731B1 (fr) | Corps céramique creux tubulaire | |
DE2733611C2 (de) | Transportleitung mit keramischer Innenisolierung zur Führung heißer Fluide | |
DE3009453C2 (de) | Steuervorrichtung für Abblaseventile von Abgasturboladern | |
DE2706850A1 (de) | Walze mit innenkuehlung | |
EP0470113B1 (fr) | Support metallique pour catalyseur monte dans une paroi de separation | |
DE2916030C2 (de) | Thermisch beanspruchtes rohrähnliches Bauteil, insbesondere Auspuffkrümmer einer Verbrennungskraftmaschine | |
DE4438192A1 (de) | Luftfederbein mit einer Druckkammer für Kraftfahrzeuge | |
DE2303699A1 (de) | Fluessigkeitsgekuehltes auslassventil fuer eine brennkraftmaschine und herstellungsverfahren | |
EP0172401B1 (fr) | Raccord pour conduits à canaux multiples | |
DE3031606A1 (de) | Rekuperator. | |
DE2406650C2 (de) | Doppelwandiges Auspuffrohr | |
DE4128544C2 (de) | Verfahren zum Herstellen eines Zylinderkopfes mit einem Portliner | |
DE19803275A1 (de) | Abgaskrümmer | |
DE4203964A1 (de) | Ringmantel fuer eine walze zum kontinuierlichen giessen | |
CH671619A5 (fr) | ||
DE3917487A1 (de) | Giessbehaelter fuer warmkammer-druckgiessmaschinen | |
DE2549427C3 (de) | Abgaseinrichtung fur eine sauerstoffreiche Abgase abgebende Brennkraftmaschine | |
DE3323781A1 (de) | Einrichtung zur kuehlung dickwandiger bauteile, insbesondere zur kuehlung der rohrboeden von waermetauschern | |
WO1995003519A1 (fr) | Accumulateur de chaleur, en particulier accumulateur de chaleur latente | |
DE3804796A1 (de) | Zylinderkopf fuer kolbenmaschinen | |
DE2449628B2 (de) | Zweitakt-brennkraftmaschine | |
DE2737136A1 (de) | Manschette | |
DE1751396C (de) | Auspuffsammler | |
DE2443144B2 (de) | Kolbenring einer Kolbenbrennkraftmaschine | |
DE389114C (de) | Rohr aus armierter Kunststeinmasse |
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 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT NL SE |
|
RTI1 | Title (correction) | ||
17P | Request for examination filed |
Effective date: 19851127 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT NL SE |
|
17Q | First examination report despatched |
Effective date: 19870416 |
|
ITF | It: translation for a ep patent filed |
Owner name: DE DOMINICIS & MAYER S.R.L. |
|
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 NL SE |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3476100 Country of ref document: DE Date of ref document: 19890216 |
|
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 | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19901030 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19901031 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19901107 Year of fee payment: 7 |
|
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19901130 Year of fee payment: 7 Ref country code: FR Payment date: 19901130 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19911102 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19911103 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19920601 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19920731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19920801 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
EUG | Se: european patent has lapsed |
Ref document number: 84113210.3 Effective date: 19920604 |