DE10007360A1 - Production method for cylinder head of internal combustion engine, particularly for petrol engine with direct injection for motor vehicle, involves cylinder head on crankcase side produced with excess - Google Patents
Production method for cylinder head of internal combustion engine, particularly for petrol engine with direct injection for motor vehicle, involves cylinder head on crankcase side produced with excessInfo
- Publication number
- DE10007360A1 DE10007360A1 DE2000107360 DE10007360A DE10007360A1 DE 10007360 A1 DE10007360 A1 DE 10007360A1 DE 2000107360 DE2000107360 DE 2000107360 DE 10007360 A DE10007360 A DE 10007360A DE 10007360 A1 DE10007360 A1 DE 10007360A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- volume
- excess
- combustion chamber
- crankcase side
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
-
- 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
-
- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
- F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Zylinderkopfes für eine Brennkraftmaschine, insbesondere für einen Ottomotor mit Direkteinspritzung, insbesondere eines Kraftfahrzeuges, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing a cylinder head for a Internal combustion engine, especially for a gasoline engine with direct injection, in particular a motor vehicle, according to the preamble of claim 1.
Bei der Herstellung von Hubkolbenbrennkraftmaschinen ergeben sich aufgrund von Toleranzen im Gießverfahren Abweichungen im Volumen der jeweiligen Zylindern zugeordneten Brennräume des Zylinderkopfes. Dies führt zu entsprechenden Abweichung im gewünschten Volumen bzw. Hubvolumen und des Verdichtungsverhältnisses ε. Beispielsweise bei ε = 11 sind Toleranzen von 0,5 üblich. Bzgl. einer Brennraumtiefe sind hierbei Toleranzen im Bereich von ±0,2 mm hinzunehmen. Dies beeinflußt jedoch die Motorfunktion ungünstig. So steigt ggf. eine Abgastemperatur, eine Emission von Schadstoffen und ein Kraftstoffverbrauch.In the manufacture of reciprocating piston internal combustion engines result from Tolerances in the casting process Deviations in the volume of the respective cylinders assigned combustion chambers of the cylinder head. This leads to corresponding Deviation in the desired volume or stroke volume and the Compression ratio ε. For example, with ε = 11, tolerances of 0.5 are common. Concerning. a combustion chamber depth are tolerances in the range of ± 0.2 mm to accept. However, this adversely affects the engine function. So one may rise Exhaust gas temperature, emission of pollutants and fuel consumption.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren der obengenannten Art zur Verfügung zu stellen, wobei die obengenannten Nachteile überwunden werden und eine möglichst geringe Toleranz für Hubraum, Brennraumtiefe bzw. Verdichtungsverhältnis erzielt wird.The present invention is therefore based on the object of a method of to provide the above type, the above disadvantages be overcome and the lowest possible tolerance for displacement, combustion chamber depth or compression ratio is achieved.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention by a method of the above. Kind of with the in Characteristics characterized claim 1 solved. Advantageous embodiments of the Invention are specified in the dependent claims.
Dazu ist es erfindungsgemäß vorgesehen, daß der Zylinderkopf kurbelgehäuseseitig mit einem Übermaß hergestellt wird, daß das Volumen aller jeweiligen Zylindern zugeordneter Brennräume des Zylinderkopfes und daraus ein Mittelwert VIST bestimmt wird, daß dieses so bestimmte Volumen VIST mit einem gewünschten Volumen für den Brennraum VSOLL verglichen wird und in Abhängigkeit von diesem Vergleich am Zylinderkopf kurbelgehäuseseitig Material mechanisch mehr oder weniger derart abgetragen wird, daß sich in der Summe für alle Zylinder ein Brennraumvolumen ergibt, welches einem gewünschten Brennraumvolumen möglichst nahe kommt.For this purpose, it is provided according to the invention that the cylinder head is produced on the crankcase side with an oversize, that the volume of all the combustion chambers of the cylinder head assigned to the respective cylinders and an average value V IST is determined from this, that this volume V IST determined in this way has a desired volume for the combustion chamber V SHOULD be compared and, depending on this comparison, material is removed more or less mechanically on the cylinder head side of the crankcase in such a way that the sum of all cylinders results in a combustion chamber volume which comes as close as possible to a desired combustion chamber volume.
Dies hat den Vorteil, daß eine geringe Streuung bzgl. des Verdichtungsverhältnisses bzw. des Hubraumes erzielt wird. In überraschender Weise läßt sich eine Abweichung einer Brennraumtiefe vom Sollwert in einem Bereich von lediglich ±0,05 mm erreichen.This has the advantage that there is little variation in the compression ratio or the displacement is achieved. Surprisingly, a deviation can be found reach a combustion chamber depth of the setpoint in a range of only ± 0.05 mm.
Zweckmäßigerweise werden die Volumen der einzelnen Zylindern zugeordneten Brennräume des Zylinderkopfes mit einem optischen Verfahren bestimmt. Dies erfolgt bevorzugt in einer Produktionslinie des Zylinderkopfes, wobei ein kurbelgehäuseseitig mechanisch abzutragendes Maß eines jeden Zylinderkopfes an eine entsprechend nachgeordnete Bearbeitungsstation übertragen wird.The volumes of the individual cylinders are expediently assigned Combustion chambers of the cylinder head are determined using an optical method. this happens preferably in a production line of the cylinder head, with a crankcase side dimension of each cylinder head to be mechanically ablated to a corresponding one downstream processing station is transmitted.
In einer bevorzugten Ausführung des Verfahrens wird der Zylinderkopf vor Messung der Brennraumvolumina kurbelgehäuseseitig mit einem Übermaß von 0,5 mm hergestellt. Zweckmäßigerweise wird als Volumen VSOLL ein gewünschtes Brennraumvolumen unter Berücksichtigung des kurbelgehäuseseitigen Übermaßes des Zylinderkopfes gewählt. Es wird dann lediglich das Übermaß mechanisch abgetragen, wenn die Abweichung des Volumens VIST vom Volumen VSOLL kleiner als ein vorbestimmter Wert ist. Sofern VIST wesentlich größer bzw. kleiner als VSOLL ist, wird an der Brennraumseite des Zylinderkopfes mehr bzw. weniger als das Übermaß mechanisch abgetragen.In a preferred embodiment of the method, the cylinder head is manufactured with an oversize of 0.5 mm on the crankcase side before measuring the combustion chamber volumes. Conveniently, a desired internal space volume of the cylinder head is selected in consideration of the crankcase side as excess volume V SOLL. Only the oversize is then removed mechanically when the deviation of the volume V ACTUAL from the volume V SET is smaller than a predetermined value. If V ACT is significantly larger or smaller than V TARGET , more or less than the excess is mechanically removed on the combustion chamber side of the cylinder head.
Weitere Merkmale, Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen, sowie aus der nachstehenden Beschreibung der Erfindung anhand der beigefügten Zeichnung. Diese zeigt in der einzigen Figur einen Zylinderkopf für eine Hubkolbenbrennkraftmaschine in schematischer Schnittansicht.Further features, advantages and advantageous configurations of the invention result from the dependent claims, as well as from the following description of the Invention with reference to the accompanying drawings. This shows one in the single figure Cylinder head for a reciprocating piston internal combustion engine in a schematic sectional view.
Der in der einzigen Figur dargestellte Zylinderkopf 10 umfaßt zylinderindividuelle Ansaugkanäle 12, zylinderindividuelle Auslaßkanäle 14 und eine kurbelgehäuseseitige Brennraumseite 16. Die Brennraumseite 16 bildet jeweils einem Zylinder eines nicht dargestellten Kurbelgehäuses zugeordnete Brennräume 18 aus, von denen im Schnitt der einzigen Figur nur einer sichtbar ist. Eine Zylinderkopfhöhe 20 bestimmt dabei eine Brennraumtiefe 22.The cylinder head 10 shown in the single figure comprises cylinder-specific intake ducts 12 , cylinder-specific exhaust ducts 14 and a combustion chamber side 16 on the crankcase side. The combustion chamber side 16 in each case forms combustion chambers 18 associated with a cylinder of a crankcase, not shown, of which only one is visible in the section of the single figure. A cylinder head height 20 determines a combustion chamber depth 22 .
Bei der Herstellung des Zylinderkopfes 10 wird dieser nach dem Gießvorgang nachbearbeitet und behält an der Brennraumseite 16 ein Übermaß von beispielsweise 0,5 mm. Nun wird das Volumen eines jeden Brennraumes 18 V1, V2, . . . Vn beispielsweise mit einem optischen Verfahren, wie beispielsweise einer digitalen Streifenprojektion auf Mikrospiegelbasis, bestimmt. Nach einem festgelegten Verfahren wird für die Volumenwerte V1, V2, . . . Vn der Brennräume 18 des Zylinderkopfes ein Mittelwert VIST gebildet. Dieser Mittelwert VIST wird mit einem Sollwert für das Gesamtvolumen aller Brennräume VSOLL, welches das brennraumseitige Übermaß berücksichtigt, verglichen. Stimmen VIST und VSOLL exakt überein oder liegt die Abweichung innerhalb eines vorbestimmten Bereiches, so wird an der Brennraumseite 16 des Zylinderkopfes 10 exakt das Übermaß weggefräst. Stimmt jedoch das ermittelte Volumen VIST nicht mit dem Sollwert VSOLL überein, so wird je nach Lage mehr oder weniger als das Übermaß derart weggefräst, daß nach dem Fräsen der Mittelwert des Volumens der Brennräume einem Sollwert für das Volumen der Brennräume ohne Übermaß möglichst genau entspricht. Erfindungsgemäß wird somit das Maß "Zylinderkopfhöhe" 20 zur Einhaltung eines vorgegebenen Brennraumvolumens innerhalb enger Grenzen gewollt abweichend von einem Normmaß bearbeitet.In the manufacture of the cylinder head 10 , it is reworked after the casting process and retains an excess of, for example, 0.5 mm on the combustion chamber side 16 . Now the volume of each combustion chamber is 18 V 1 , V 2 ,. , , V n is determined, for example, using an optical method, such as a digital fringe projection based on a micromirror. According to a defined procedure, the volume values V 1 , V 2 ,. , , V n of the combustion chambers 18 of the cylinder head forms an average value V IST . This mean value V ACTUAL is compared with a target value for the total volume of all combustion chambers V DES , which takes into account the excess on the combustion chamber side. If V ACTUAL and V SHOULD match exactly or if the deviation lies within a predetermined range, then exactly the excess is milled away on the combustion chamber side 16 of the cylinder head 10 . However, the determined volume V does not coincide with the target value V TARGET, so depending on the situation is more or less milled away as the excess such that after milling the average value of the volume of the combustion chambers a desired value for the volume of the combustion chambers without excessive precisely as possible corresponds. According to the invention, the dimension "cylinder head height" 20 is deliberately machined to maintain a predetermined combustion chamber volume within narrow limits, deviating from a standard dimension.
Claims (8)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000107360 DE10007360B4 (en) | 2000-02-18 | 2000-02-18 | Method for producing a cylinder head for an internal combustion engine |
PCT/EP2001/000925 WO2001061178A1 (en) | 2000-02-18 | 2001-01-29 | Method for producing a cylinder head for an internal combustion engine |
EP01902360A EP1259721A1 (en) | 2000-02-18 | 2001-01-29 | Method for producing a cylinder head for an internal combustion engine |
AU2001230212A AU2001230212A1 (en) | 2000-02-18 | 2001-01-29 | Method for producing a cylinder head for an internal combustion engine |
JP2001560003A JP2003522902A (en) | 2000-02-18 | 2001-01-29 | Method for manufacturing a cylinder head for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000107360 DE10007360B4 (en) | 2000-02-18 | 2000-02-18 | Method for producing a cylinder head for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10007360A1 true DE10007360A1 (en) | 2001-08-23 |
DE10007360B4 DE10007360B4 (en) | 2008-07-31 |
Family
ID=7631380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2000107360 Expired - Fee Related DE10007360B4 (en) | 2000-02-18 | 2000-02-18 | Method for producing a cylinder head for an internal combustion engine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1259721A1 (en) |
JP (1) | JP2003522902A (en) |
AU (1) | AU2001230212A1 (en) |
DE (1) | DE10007360B4 (en) |
WO (1) | WO2001061178A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005037735B4 (en) * | 2005-08-05 | 2010-07-01 | Nemak Linz Gmbh | Cylinder head casting blank, cast cylinder head for diesel internal combustion engines and method of making a cylinder head casting blank |
JP6361538B2 (en) * | 2015-03-18 | 2018-07-25 | マツダ株式会社 | Method for adjusting engine combustion chamber volume with thermal barrier film |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4029881A1 (en) * | 1990-09-21 | 1992-04-02 | Porsche Ag | IC engine valve seat ring - avoids projecting into combustion chamber by mounting ring in cylinder head above chamber |
DE19734053A1 (en) * | 1997-08-06 | 1999-02-11 | Alcan Gmbh | Piston or cylinder head coating for IC engine |
DE19813745A1 (en) * | 1997-09-29 | 1999-04-01 | Nissan Diesel Motor Co | Internal combustion engine cylinder head making process |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4559684A (en) * | 1981-02-27 | 1985-12-24 | Pryor Timothy R | Controlled machining of combustion chambers, gears and other surfaces |
DE3143516C2 (en) * | 1981-11-03 | 1983-10-27 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Method for testing and setting a defined distance between the end-face outer surface of a piston in a reciprocating piston machine and an opposite wall |
DE4040938A1 (en) * | 1990-12-20 | 1992-06-25 | Kloeckner Humboldt Deutz Ag | Machining the connecting surface between cylinder head and block - by using two stages with intermediate heat treatment to prestress surface and thereby avoid distortion during actual working of engine |
DE4436031C2 (en) * | 1994-10-08 | 1998-02-12 | Ford Werke Ag | Method and device for minimizing the shape and tolerance position deviations when machining the combustion chamber of cylinder heads |
US5864777A (en) * | 1997-01-21 | 1999-01-26 | Ford Global Technologies, Inc. | Method of predicting volume of finished combustion chambers from a raw cylinder head casting |
IT1293668B1 (en) * | 1997-08-01 | 1999-03-08 | Fiat Ricerche | INTERNAL COMBUSTION ENGINE WITH COMMANDED IGNITION WITH COMBUSTION CHAMBER EQUIPPED WITH THREE VALVES AND CENTRAL SPARK PLUG. |
-
2000
- 2000-02-18 DE DE2000107360 patent/DE10007360B4/en not_active Expired - Fee Related
-
2001
- 2001-01-29 JP JP2001560003A patent/JP2003522902A/en not_active Withdrawn
- 2001-01-29 AU AU2001230212A patent/AU2001230212A1/en not_active Abandoned
- 2001-01-29 WO PCT/EP2001/000925 patent/WO2001061178A1/en not_active Application Discontinuation
- 2001-01-29 EP EP01902360A patent/EP1259721A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4029881A1 (en) * | 1990-09-21 | 1992-04-02 | Porsche Ag | IC engine valve seat ring - avoids projecting into combustion chamber by mounting ring in cylinder head above chamber |
DE19734053A1 (en) * | 1997-08-06 | 1999-02-11 | Alcan Gmbh | Piston or cylinder head coating for IC engine |
DE19813745A1 (en) * | 1997-09-29 | 1999-04-01 | Nissan Diesel Motor Co | Internal combustion engine cylinder head making process |
Non-Patent Citations (1)
Title |
---|
STEIDLE,Hermann: Moderne Konzepte zur Zylinderkopfbearbeitung. In: Maschinenmarkt, Würzburg 102, 1996, 50, S.26-28 * |
Also Published As
Publication number | Publication date |
---|---|
EP1259721A1 (en) | 2002-11-27 |
WO2001061178A1 (en) | 2001-08-23 |
JP2003522902A (en) | 2003-07-29 |
DE10007360B4 (en) | 2008-07-31 |
AU2001230212A1 (en) | 2001-08-27 |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8120 | Willingness to grant licenses paragraph 23 | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130903 |