EP0627547A1 - Culasse pour un moteur à combustion interne avec soupapes commandées - Google Patents

Culasse pour un moteur à combustion interne avec soupapes commandées Download PDF

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Publication number
EP0627547A1
EP0627547A1 EP94108022A EP94108022A EP0627547A1 EP 0627547 A1 EP0627547 A1 EP 0627547A1 EP 94108022 A EP94108022 A EP 94108022A EP 94108022 A EP94108022 A EP 94108022A EP 0627547 A1 EP0627547 A1 EP 0627547A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
insert
valve
gas exchange
fuselage
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
Application number
EP94108022A
Other languages
German (de)
English (en)
Other versions
EP0627547B1 (fr
Inventor
Uwe Dieter Dipl.-Ing. Grebe
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.)
Adam Opel GmbH
Opel Espana SLU
Original Assignee
Adam Opel GmbH
General Motors Espana SL
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 Adam Opel GmbH, General Motors Espana SL filed Critical Adam Opel GmbH
Publication of EP0627547A1 publication Critical patent/EP0627547A1/fr
Application granted granted Critical
Publication of EP0627547B1 publication Critical patent/EP0627547B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
    • F01L3/085—Valve cages
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • F02F2001/241—Cylinder heads specially adapted to pent roof shape of the 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

Definitions

  • the invention relates to a cylinder head for a valve-controlled internal combustion engine, in which at least one of the gas exchange channels near its mouth region is formed by an insert located in the cylinder head and the channel opening can be closed by means of a poppet valve.
  • Such a cylinder head is described in DE-OS 33 27 948.
  • a wedge-shaped compression chamber is formed in that the valve plates form an essential part of the side surfaces of this compression chamber. Since this means that the valves can no longer be used from the compression chamber, at least one opening is provided in the cylinder head, which leads from the outside through the side wall of the compression chamber.
  • a sealed housing is inserted from the outside into the opening, in which a controllable valve is guided and in which the inlet and outlet channels are incorporated.
  • the object of the present invention is to provide a cylinder head for a valve-controlled internal combustion engine, in which at least the mouth areas of the gas exchange channels can be produced outside the cylinder head and inserted into the cylinder head, but the fuselage of the cylinder head can remain a unit, so that the coolant channels and the Oil channels run in the usual way within a block.
  • the invention sets itself the task of making such a cylinder head easier and cheaper to manufacture.
  • this object is achieved in that the area near the mouth of one or more gas exchange channels in a cylindrical or conical or prismatic or pyramidal shape with its longitudinal axis in a plane parallel or congruent with the longitudinal axis of the gas exchange valve or in a corresponding bore of the
  • the fuselage of the cylinder head insert runs, with each area of these gas exchange channels near the mouth entering the insert laterally, exiting at the end facing the combustion chamber, and the plate of the gas exchange valve being arranged centrally to this outlet opening.
  • the insert can be arranged in a tubular manner above the region of the gas exchange duct close to the mouth, around a valve guide connected to the fuselage of the cylinder head.
  • the insert can also form a valve guide above the region of the gas exchange duct close to the mouth, the insert being supported against a base in the fuselage of the cylinder head which supports the valve spring.
  • valve stem guide is integrated in the insert.
  • an optimal friction pairing on the valve stem guide can be achieved.
  • the valve stem seal can also be connected to the insert in such a way that there are advantages due to the better mounting option outside the cylinder head.
  • the insert can form a valve guide above the region of the gas exchange duct close to the mouth and carry the valve springs with its upper end face, the insert being supported on a circumferential step of the bore in the fuselage of the cylinder head.
  • Such an embodiment of the invention makes it possible to pre-assemble the insert and thus the precisely machined opening area of the gas exchange channel together with the associated gas exchange valve and its valve springs including the valve stem guide and valve stem seal outside the cylinder head to form a valve module.
  • This valve module can be prepared in a specialized production, so that it can then be mounted with great efficiency when assembling the cylinder head with the fuselage of the cylinder head.
  • a valve seat ring known per se can be arranged between the sealing surfaces of the plate of the gas exchange valve and the insert and held in the fuselage of the cylinder head.
  • valve seat ring Due to the arrangement of a valve seat ring known per se, which is included in a pre-assembled valve module between the valve and the insert in the module, a stable sealing behavior of the valves can be achieved even with difficult engine operation. By selecting suitable materials for the application, however, a special valve seat ring can also be dispensed with.
  • the regions near the mouth of a plurality of gas exchange channels located in a row are arranged in a common insert.
  • the gas exchange valves controlling these gas exchange channels can also be guided in the insert.
  • Such an insert can also be preassembled with the gas exchange valves as a module, in which case the central axes of the valves can then be arranged independently of the central axis of the insert.
  • both intake valves surrounded by an insert.
  • These two inlet valves can be arranged parallel to one another, but they can also form an angle with one another.
  • the fuselage 1 of the cylinder head is cut in the area of two gas exchange channels 2 and 3.
  • the gas exchange channel 2 is formed in the usual way over the entire length of the fuselage 1, that is to say it is subject to the usual casting tolerances.
  • the gas exchange duct 3, is formed only in its upper straight region 4 by the casting of the fuselage 1, while the lower region 5 near the mouth runs in an insert 6, which is provided as a cylindrical part in a cylindrical part in the fuselage 1 of the cylinder head, coaxial to the longitudinal axis of a the gas exchange channel 3 controlling gas exchange valve 7 extending bore is arranged.
  • the gas exchange duct 3 enters the insert 6 laterally and exits again on the end face 9 of the insert 6 facing the combustion chamber 8 of the internal combustion engine.
  • the insert 6 is tubular above the part of the gas exchange duct 3 running in it.
  • This tubular part 10 encloses the receptacle 11 of the valve stem guide bush 12 formed by the fuselage 1 of the cylinder head.
  • An upper edge 13 of the insert 6 lies against a bottom 14 between the bore 6 receiving the insert 6 and the oil space 15 of the cylinder head.
  • the outer edge 16 of the end face 9 of the insert 6 is covered by a valve seat ring 17, against which the valve disk rests when the gas exchange valve 7 is closed.
  • the valve seat ring 17 is shrunk in the usual manner in the fuselage 1 of the cylinder head.
  • the gas exchange duct 3 can be produced in its straight region 4 by a simply shaped cast core. If necessary, this can Area 4 can also be reworked relatively easily.
  • the area 5 of the gas exchange channel 3 near the mouth can be manufactured together with the insert 6 outside the cylinder head by, for. B. the insert 6 is designed as a metal sintered part or ceramic part. In this way, the area 5 of the gas exchange channel 3 close to the mouth can also be precisely manufactured in a cost-effective manner.
  • the bore for receiving the insert 6 in the fuselage 1 of the cylinder head can be machined relatively easily from the side of the combustion chamber 8 together with the receptacle for the valve seat ring 17.
  • the insert 6 ' also forms the valve stem guide 12', so that the casting forming the fuselage 1 of the cylinder head can be made simpler and the assembly of the cylinder head is also simplified.
  • the insert 6 ' also forms the valve seat, so that a separate valve seat ring can be dispensed with.
  • a further simplification is achieved in particular for the assembly of the cylinder head.
  • the insert 6 ′′ projects with its upper end face 18 up to the oil space 15, while an upper edge 13 ′ is supported on a step 19 of the bore for receiving the insert 6 ′′.
  • the valve spring 20 can thus be supported directly on the insert 6 ′′ and the insert 6 ′′ can be preassembled together with the gas exchange valve 7, the valve spring 20, the spring plate 21 with the spring plate wedges 22 and a valve stem seal (not shown) in the bore in the fuselage 1 of the cylinder head.
  • valve module it is thus possible to provide a preassembled valve module together with the region 5 of a gas exchange duct 3 close to the mouth, which further reduces the manufacturing outlay when assembling the cylinder head compared to the previously described embodiments.
  • a separate valve seat ring can also be provided, which is then inserted between gas exchange valve 7 and insert 6 '' during the pre-assembly.
  • the valve seat can also be formed by the insert 6 ′′.
  • An insert 6, 6 ', 6' 'according to the invention will be used in particular with inlet ducts; but it is also applicable to exhaust ports, so that a cylinder head according to the invention, each with an insert 6, 6 ', 6' 'on one or more intake ports, on one or more exhaust ports or on both intake and exhaust ports is executable.
  • a large number of further exemplary embodiments are conceivable for the invention, for example by B.
  • two mouth areas of separate inlet channels of a cylinder are arranged in a prismatic insert, in which the associated two gas exchange valves can then be pre-assembled with their valve springs.
  • the invention creates the prerequisites to manufacture a cylinder head with relatively simple means so that the charge interaction efficiency as a factor of the overall efficiency of an internal combustion engine achieves a good value due to the high fluidic quality of the charge exchange channels even in the difficult transition between the straight channel section and the valve seat.
  • Primary molding processes can be used for the production of the entire channel course, ie production can be carried out at low cost, since no manual mechanical reworking in the channel course is required.
  • the Insert 6, 6 ', 6'' can be manufactured as a sintered part, whereby a gradient material can be used in a manner known per se with which high hardness can be achieved in the area of the valve seat and good bearing properties in the area of the valve guide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lift Valve (AREA)
EP94108022A 1993-06-03 1994-05-25 Culasse pour un moteur à combustion interne avec soupapes commandées Expired - Lifetime EP0627547B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4318462 1993-06-03
DE4318462A DE4318462A1 (de) 1993-06-03 1993-06-03 Zylinderkopf für eine ventilgesteuerte Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0627547A1 true EP0627547A1 (fr) 1994-12-07
EP0627547B1 EP0627547B1 (fr) 1997-08-06

Family

ID=6489555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108022A Expired - Lifetime EP0627547B1 (fr) 1993-06-03 1994-05-25 Culasse pour un moteur à combustion interne avec soupapes commandées

Country Status (3)

Country Link
EP (1) EP0627547B1 (fr)
DE (2) DE4318462A1 (fr)
ES (1) ES2105418T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744542A1 (fr) 1995-05-22 1996-11-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Culasse pour moteur multicylindrique à explosiv à refroidissement liquide
FR2761403A1 (fr) * 1997-03-21 1998-10-02 Peugeot Culasse pour moteur a combustion interne
US20170058823A1 (en) * 2015-08-24 2017-03-02 GM Global Technology Operations LLC Cylinder head with blended inlet valve seat for high tumble inlet port

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808051A1 (de) * 1998-02-26 1999-09-02 Reitz Zylinderkopf einer Brennkraftmaschine
DE10029508B4 (de) * 2000-06-21 2008-11-20 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Kanaleinheit für den Ladungswechsel von Kolbenmaschinen und Verfahren zu ihrer Herstellung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745862A (fr) * 1932-05-11 1933-05-17 Ingersoll Rand Co Corps de soupape pour moteur à combustion interne
GB406815A (en) * 1932-11-10 1934-03-08 Oliver Danson North Improvements in connection with valves and valve guides for internal combustion engines
GB436559A (en) * 1933-09-28 1935-10-14 Binem Perlmutter Improvements in or relating to internal-combustion engines of the liquid-fuel injection type
FR70548E (fr) * 1956-09-24 1959-05-29 Lanova Ag Moteur à combustion interne, à injection de combustible avec culasse à refroidissement par air ou par eau, à chambre de combustion rapportée

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308805A1 (de) * 1993-03-19 1994-09-22 Opel Adam Ag Einlaßkanalsystem für eine Brennkraftmaschine mit mindestens zwei im Zylinderkopf angeordneten Einlaßventilen pro Zylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745862A (fr) * 1932-05-11 1933-05-17 Ingersoll Rand Co Corps de soupape pour moteur à combustion interne
GB406815A (en) * 1932-11-10 1934-03-08 Oliver Danson North Improvements in connection with valves and valve guides for internal combustion engines
GB436559A (en) * 1933-09-28 1935-10-14 Binem Perlmutter Improvements in or relating to internal-combustion engines of the liquid-fuel injection type
FR70548E (fr) * 1956-09-24 1959-05-29 Lanova Ag Moteur à combustion interne, à injection de combustible avec culasse à refroidissement par air ou par eau, à chambre de combustion rapportée

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744542A1 (fr) 1995-05-22 1996-11-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Culasse pour moteur multicylindrique à explosiv à refroidissement liquide
FR2761403A1 (fr) * 1997-03-21 1998-10-02 Peugeot Culasse pour moteur a combustion interne
US20170058823A1 (en) * 2015-08-24 2017-03-02 GM Global Technology Operations LLC Cylinder head with blended inlet valve seat for high tumble inlet port
CN106481476A (zh) * 2015-08-24 2017-03-08 通用汽车环球科技运作有限责任公司 用于强滚流进气口的带混合式进气阀座的汽缸盖

Also Published As

Publication number Publication date
ES2105418T3 (es) 1997-10-16
DE4318462A1 (de) 1994-12-08
DE59403608D1 (de) 1997-09-11
EP0627547B1 (fr) 1997-08-06

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