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WO1995027577A1 - Device for casting a cylinder head - Google Patents

Device for casting a cylinder head Download PDF

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Publication number
WO1995027577A1
WO1995027577A1 PCT/EP1995/000516 EP9500516W WO9527577A1 WO 1995027577 A1 WO1995027577 A1 WO 1995027577A1 EP 9500516 W EP9500516 W EP 9500516W WO 9527577 A1 WO9527577 A1 WO 9527577A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
casting
cylinder head
tangential
cylinder
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.)
Ceased
Application number
PCT/EP1995/000516
Other languages
German (de)
French (fr)
Inventor
Salvador Ribes-Navarro
Manfred Bach
Udo Ertingshausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of WO1995027577A1 publication Critical patent/WO1995027577A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • F02B31/042—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors induction channel having a helical shape around the intake valve axis
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/08—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets
    • F02B31/085—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets having two inlet valves
    • 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
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a device for casting a cylinder head according to the preamble of claim 1.
  • a cylinder head is shown, for example, in EP-214 251.
  • the object of the invention is to provide a device for casting a cylinder head of the generic type, with which it is ensured that the swirl channels and the tangential channels of all cylinders are absolutely identical to one another.
  • this object is achieved in that the two casting cores are connected to one another at their rear ends in order to produce the swirl channel and the tangential channel.
  • the casting cores for the swirl channel and the tangential channel of each cylinder are therefore combined to form a unit which is inserted into the casting mold and is identical for all cylinders. This ensures that the same flow and filling conditions prevail in each cylinder without the need to fix and adjust individual cores for the swirl channel and the tangential channel. is borrowed.
  • the two casting cores for the inlet channels of each cylinder can be produced as individual cores and connected to one another before insertion into the casting mold. However, it is more advantageous to manufacture the two casting cores as a one-piece unit in the core molding machine.
  • FIG. 2 shows a top view of the casting cores combined to form a unit for producing the swirl channel and the tangential channel of a cylinder.
  • the cylinder head shown in Fig. 1 has two intake valves 1, 2 and two exhaust valves 3, 4 per cylinder.
  • the inlet valves 1, 2 are each assigned their own inlet channel 5 or 6, which starts from a flange surface 7 of the cylinder head.
  • the inlet channel 5 is designed as a tangential channel and the inlet channel 6 is designed as a swirl channel.
  • casting cores 8 and 9 (FIG. 2) are used, which are connected to one another at their rear ends by a web 10 and are preferably produced as a one-piece unit in a core molding machine. This ensures that the tangential channel 5 and the swirl channel 6 run identically relative to one another in all the cylinders, which ensures that the same flow and filling conditions are present in all the cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention concerns a diesel engine whose cylinder head has two inlet valves and two inlet ducts per cylinder, i.e. a spiral duct and a tangential duct. In order to ensure that the same gas-flow and filling conditions prevail in each cylinder, the casting cores (8 and 9, respectively) for the tangential duct and the spiral duct are combined in a single unit.

Description

Beschreibung description

Vorrichtung zum Gießen eines ZylinderkopfesDevice for casting a cylinder head

Die Erfindung betrifft eine Vorrichtung zum Gießen eines Zy¬ linderkopfes entsprechend dem Oberbegriff des Anspruchs 1. Ein derartiger Zylinderkopf ist beispielsweise in der EP-214 251 dargestellt.The invention relates to a device for casting a cylinder head according to the preamble of claim 1. Such a cylinder head is shown, for example, in EP-214 251.

Um für alle Zylinder die gleichen Füllungs- und Strömungs¬ verhältnisse zu erreichen, müssen die Gießkerne für den Drallkanal und den Tangentialkanal jedes Zylinders sehr ex¬ akt in der Gießform positioniert werden. Dies bereitet in der Praxis erhebliche Probleme.In order to achieve the same filling and flow conditions for all cylinders, the casting cores for the swirl channel and the tangential channel of each cylinder must be positioned very precisely in the casting mold. In practice, this creates considerable problems.

Aufgabe der Erfindung ist es, eine Vorrichtung zum Gießen eines Zylinderkopfes der gattungsgemäßen Art zu schaffen, mit der sichergestellt ist, daß die Drallkanäle und die Tan- gentialkanäle aller Zylinder absolut identisch zueinander liegen.The object of the invention is to provide a device for casting a cylinder head of the generic type, with which it is ensured that the swirl channels and the tangential channels of all cylinders are absolutely identical to one another.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die beiden Gießkerne zur Erzeugung des Drallkanals und des Tan- gentialkanals an ihren hinteren Enden miteinander verbunden sind. Die Gießkerne für den Drallkanal und den Tangentialka¬ nal jedes Zylinders werden also zu einer Einheit zusammenge- fasεt, die in die Gießform eingelegt wird und für alle Zy¬ linder identisch ist. Damit ist sichergestellt, daß in jedem Zylinder die gleichen Strömungs- und Füllungsverhältnisse herrschen, ohne daß eine Fixierung und Justierung einzelner Kerne für den Drallkanal und den Tangentialkanal erforder- lieh ist .According to the invention, this object is achieved in that the two casting cores are connected to one another at their rear ends in order to produce the swirl channel and the tangential channel. The casting cores for the swirl channel and the tangential channel of each cylinder are therefore combined to form a unit which is inserted into the casting mold and is identical for all cylinders. This ensures that the same flow and filling conditions prevail in each cylinder without the need to fix and adjust individual cores for the swirl channel and the tangential channel. is borrowed.

Die beiden Gießkerne für die Einlaßkanäle jedes Zylinders können als Einzelkerne hergestellt und vor dem Einlegen in die Gießform miteinander verbunden werden. Vorteilhafter ist es jedoch, die beiden Gießkerne als einstückige Einheit in der Kernformmaschine herzustellen.The two casting cores for the inlet channels of each cylinder can be produced as individual cores and connected to one another before insertion into the casting mold. However, it is more advantageous to manufacture the two casting cores as a one-piece unit in the core molding machine.

Ein Ausführungsbeispiel der Erfindung wird im folgenden un¬ ter Bezugnahme auf die Zeichnungen beschrieben.An embodiment of the invention is described below with reference to the drawings.

Fig. 1 zeigt einen Schnitt durch einen Zylinderkopf,1 shows a section through a cylinder head,

Fig. 2 zeigt in Draufsicht die zu einer Einheit zusammenge- fassten Gießkerne für die Erzeugung des Drallkanals und des Tangentialkanals eines Zylinders.2 shows a top view of the casting cores combined to form a unit for producing the swirl channel and the tangential channel of a cylinder.

Der in Fig. 1 dargestellte Zylinderkopf weist pro Zylinder zwei Einlaßventile 1, 2 und zwei Auslaßventile 3, 4 auf. Den Einlaßventilen 1, 2 ist jeweils ein eigener Einlaßkanal 5 bzw. 6 zugeordnet, der von einer Flanschfläche 7 des Zylin¬ derkopfes ausgeht. Der Einlaßkanal 5 ist als Tangentialkanal und der Einlaßkanal 6 ist als Drallkanal ausgebildet.The cylinder head shown in Fig. 1 has two intake valves 1, 2 and two exhaust valves 3, 4 per cylinder. The inlet valves 1, 2 are each assigned their own inlet channel 5 or 6, which starts from a flange surface 7 of the cylinder head. The inlet channel 5 is designed as a tangential channel and the inlet channel 6 is designed as a swirl channel.

Zur Erzeugung der Einlaßkanäle 5 und 6 werden Gießkerne 8 und 9 (Fig. 2) verwendet, die an ihren hinteren Enden durch einen Steg 10 miteinander verbunden sind und vorzugsweise als einstückige Einheit in einer Kernformmaschine herge¬ stellt werden. Damit ist gewährleistet, daß bei allen Zylin¬ dern der Tangentialkanal 5 und der Drallkanal 6 identisch relativ zueinander verlaufen, wodurch gewährleistet ist, daß in allen Zylindern die gleichen Strömungs- und Füllungsver¬ hältnisse vorliegen. To produce the inlet channels 5 and 6, casting cores 8 and 9 (FIG. 2) are used, which are connected to one another at their rear ends by a web 10 and are preferably produced as a one-piece unit in a core molding machine. This ensures that the tangential channel 5 and the swirl channel 6 run identically relative to one another in all the cylinders, which ensures that the same flow and filling conditions are present in all the cylinders.

Claims

Patentansprüche claims 1. Vorrichtung zum Gießen eineε Zylinderkopfes insbesondere für eine Diesel-Brennkraftmaschine, der zwei Einlaßventi¬ le (1, 2) aufweist, denen jeweils ein eigener, von einer Flanschfläche (7) des Zylinderkopfes ausgehender Einla߬ kanal zugeordnet ist, von denen einer als Drallkanal (6) und der andere als Tangentialkanal (5) ausgebildet ist, d a d u r c h g e k e n n z e i c h n e t , daß die beiden Gießkerne (8, 9) zur Erzeugung des Tangen- tialkanals (5) und des Drallkanals (6) an ihren hinteren Enden miteinander verbunden sind.1. Device for casting a cylinder head, in particular for a diesel internal combustion engine, which has two inlet valves (1, 2), each of which is assigned its own inlet channel emanating from a flange surface (7) of the cylinder head, one of which as Swirl channel (6) and the other is designed as a tangential channel (5), characterized in that the two casting cores (8, 9) for producing the tangential channel (5) and the swirl channel (6) are connected to one another at their rear ends. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Gießkerne (8, 9) zu einer einstückigen Einheit zusammengefaßt sind. 2. Device according to claim 1, characterized in that the two casting cores (8, 9) are combined to form a one-piece unit.
PCT/EP1995/000516 1994-04-08 1995-02-13 Device for casting a cylinder head Ceased WO1995027577A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4412133.4 1994-04-08
DE4412133A DE4412133C1 (en) 1994-04-08 1994-04-08 Diesel engine cylinder head casting method

Publications (1)

Publication Number Publication Date
WO1995027577A1 true WO1995027577A1 (en) 1995-10-19

Family

ID=6514920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000516 Ceased WO1995027577A1 (en) 1994-04-08 1995-02-13 Device for casting a cylinder head

Country Status (2)

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DE (1) DE4412133C1 (en)
WO (1) WO1995027577A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501172A1 (en) * 2005-01-13 2006-07-15 Avl List Gmbh Air-cooled internal combustion engine has cylinder, ventilator housing which partially surrounds cylinder housing whereby means is provided for deviating semi-axial flow of cooling flow emerging from blower wheel
CN108457765A (en) * 2018-02-07 2018-08-28 广西玉柴机器股份有限公司 Gas machine air intake duct

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820267A (en) * 1953-12-17 1958-01-21 Gen Motors Corp Cylinder head coring
WO1986005237A1 (en) * 1985-03-05 1986-09-12 Motoren-Werke Mannheim Ag Vorm. Benz Abt. Stat. Mo Intake spiral and/or turbulence device for combustion engines
EP0445355A2 (en) * 1990-03-07 1991-09-11 Navistar International Transportation Corp. Cylinder head casting apparatus and method
WO1992022736A2 (en) * 1991-06-07 1992-12-23 Detroit Diesel Corporation Improved internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820267A (en) * 1953-12-17 1958-01-21 Gen Motors Corp Cylinder head coring
WO1986005237A1 (en) * 1985-03-05 1986-09-12 Motoren-Werke Mannheim Ag Vorm. Benz Abt. Stat. Mo Intake spiral and/or turbulence device for combustion engines
EP0445355A2 (en) * 1990-03-07 1991-09-11 Navistar International Transportation Corp. Cylinder head casting apparatus and method
WO1992022736A2 (en) * 1991-06-07 1992-12-23 Detroit Diesel Corporation Improved internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501172A1 (en) * 2005-01-13 2006-07-15 Avl List Gmbh Air-cooled internal combustion engine has cylinder, ventilator housing which partially surrounds cylinder housing whereby means is provided for deviating semi-axial flow of cooling flow emerging from blower wheel
CN108457765A (en) * 2018-02-07 2018-08-28 广西玉柴机器股份有限公司 Gas machine air intake duct
CN108457765B (en) * 2018-02-07 2020-06-26 广西玉柴机器股份有限公司 Air inlet channel of gas engine

Also Published As

Publication number Publication date
DE4412133C1 (en) 1995-08-03

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