EP0931925B1 - Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmschine - Google Patents
Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmschine Download PDFInfo
- Publication number
- EP0931925B1 EP0931925B1 EP98123345A EP98123345A EP0931925B1 EP 0931925 B1 EP0931925 B1 EP 0931925B1 EP 98123345 A EP98123345 A EP 98123345A EP 98123345 A EP98123345 A EP 98123345A EP 0931925 B1 EP0931925 B1 EP 0931925B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- duct
- gas
- change
- coolant
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 title 1
- 239000002826 coolant Substances 0.000 claims description 51
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
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
- F02F1/4214—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
- 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
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- 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
-
- 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
- F02F2001/246—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis and orientated radially from the combustion chamber surface
-
- 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
Definitions
- the invention relates to a liquid-cooled cylinder head of a multi-cylinder, multi-valve per cylinder Internal combustion engine, with one between the outer walls of a cylinder head floor and a spaced top wall limited coolant space that for Cross-flow of coolant by means of a cylinder head screw connection between screw pipes provided transverse walls is divided into sections, with between Adjacent transverse walls are combined to form a collecting channel Gas exchange ducts are arranged directed to the respective outer wall, and in the middle of the gas exchange channels ending on the cylinder head, the top wall penetrating dome provided for a spark plug and / or an injection nozzle is.
- Such a cylinder head is known for example from DE-C 38 38 953.
- a disadvantage of this known cylinder head is the relatively large coolant space, being the velocity of the cross flow in each coolant compartment section via projections arranged on the transverse walls facing the central dome is determined, the flow edges arranged offset with respect to their height exhibit. These projections face the dome relatively close to the cathedral spaced flow edges on the other hand, on the cylinder head bottom side of the dome flow edges arranged far away to achieve a relatively large Flow cross section at moderate flow speed.
- DE-C 196 08 576 shows and describes an exclusively crosswise flowed through cylinder head with each combustion chamber area assigned Coolant chamber section, the respective coolant chamber section for achieving a relatively high, turbulent flow rate relatively low is.
- the invention has for its object to provide a generic cylinder head To design coolant chamber sections for cross flow so that the coolant guide serving elements for a turbulent flow in coolant compartment sections of medium height additionally increased rigidity of the cylinder head serve.
- the cylinder head at least one from an inward to the cylinder head longitudinal center plane Section of the outer wall has limited longitudinal channel, which is further from a adjacent cylinder head bottom section and one with the outer wall section connecting longitudinal wall is formed, which of a gas exchange manifold interspersed longitudinal wall one upper and one below this collecting channel arranged opening and the respective cylinder head bottom lower, in cross-section depending on the distance from one single coolant inlet of the longitudinal channel selected opening with on free valve land area between separate, similar gas exchange channels
- Directional guide ribs is connected, each with a bottom connection area of the respective gas exchange channel form a coolant passage, and that the upper opening above the collecting channel of the coolant supply formed between the respective gas exchange channel and the top wall Valve guides serves.
- the cylinder head further contributes significantly to that Screw whistles between the top wall and the cylinder head floor about V-shaped walls with the longitudinal wall of the longitudinal channel in one piece Connected to form an oil return channel with one in the Cover wall provided inlet opening, the longitudinal wall bottom of the oil return channel adjacent overflow openings for the coolant the longitudinal channel.
- overflow openings it is further ensured that coolant fractions of the neighboring, from a guide rib and the respective Gas exchange channel limited coolant passage are supplied with the advantage a partial flow around this gas exchange channel.
- the longitudinal channel of a respective Gas exchange manifold so spaced from the cylinder head bottom portion is that the flow cross-section of the longitudinal channel over the Collective channel to the upper opening for cooling the valve guides relative to the flow cross section under the collecting duct to the lower opening as Throttle cross section serves.
- the advantage of this configuration is that for the Guide ribs assigned an opening to the needs of the respective coolant compartment section corresponding amount of coolant over the slotted to rectangular designed opening can be fed.
- One for influencing the flow speed in the transverse direction of the cylinder head advantageous embodiment is further achieved in that the separate gas exchange ducts of each longitudinal exchange gas exchange duct opposite gas exchange channels beyond the cathedral via a connected arrangement close to the floor on both sides to the transverse walls form directed coolant guide, and provided on the transverse walls Projections of the further coolant guide for cross-flow through the coolant chamber section serve, the free cross-sections between the connected Gas exchange channels and the transverse walls as well as the top wall as an outlet side Serve throttle.
- This configuration advantageously enables in combination with a Another feature, according to which the longitudinal channel is connected at one end on the pump outlet side is, on the one hand, a supply of cold coolant at a relatively high speed and on the other hand an outflow of the cross flow at a higher temperature with turbulent flow.
- the longitudinal channel is for a quick equalization of the temperature in the cylinder head advantageously interspersed on the outlet side with gas exchange outlet collecting ducts Cylinder head arranged.
- the invention has been broken down on the basis of a section shown in the drawing described cylinder head described.
- a liquid-cooled cylinder head 1 of a multi-cylinder, multi-valve per cylinder, Internal combustion engine, not shown, has a between outer walls 2 bounded by a cylinder head base 3 and a spaced top wall 4 Coolant chamber 5, the cross-flow of coolant by means of screw pipes 6 of a cylinder head screw connection provided transverse walls 7, 7 'in sections 8 is subdivided, each between adjacent transverse walls 7, 7 ' a collecting channel 9, 9 'combined similar gas exchange channels 10, 10' and 11, 11 'are arranged to run in the direction of the respective outer wall 2 and in the middle the gas exchange channels 10, 10 'or 11, 11' ending on the cylinder head side Top wall 4 penetrating dome 12 for a spark plug and / or an injection nozzle is provided.
- the cylinder head 1 at least one of an inward limited to the cylinder head longitudinal center plane section 2 'of the outer wall 2 Longitudinal channel 13, which further from an adjacent cylinder head bottom portion 3 'and one connecting this to the outer wall section 2' Longitudinal wall 14 is formed, wherein the gas exchange manifold 9th interspersed longitudinal wall 14 one upper and one arranged below this collecting channel 9 Opening 15 and 16 has.
- the cylinder head side lower, in cross-section depending on the distance from a single, selected coolant inlet of the longitudinal channel 13 on the pump outlet side Opening 16 with a free valve web area 17 between separate, Similar gas exchange channels 10, 10 'of the collecting channel 9 directed guide ribs 18, 18 'in connection, each with a bottom-side connection area of the respective gas exchange channel 10, 10 'form a coolant passage 19, 19'.
- the upper opening 15 in the longitudinal wall 14 above the collecting channel 9 is used Applying coolant between the respective gas exchange duct 10, 10 'and the top wall 4 formed valve guides 20, 20 '.
- Triangular to trapezoidal shaped longitudinal channel 13 is used for further stiffening of the cylinder head 1 further that the screw pipes 6 between the top wall 4 and the cylinder head base 3 arranged approximately V-shaped Walls 21 in one piece with the longitudinal wall 14 of the longitudinal channel 13 are to form an oil return channel 22 with one in the top wall 4 provided inlet opening 22 ', the longitudinal wall 14 on the bottom of the oil return channel 22 has adjacent overflow openings 23.
- These overflow openings 23 serve on the one hand a partial coolant supply to the Coolant passages 19 and 19 'of the guide ribs 18 and 18' and the other one Cooling the oil return channel 22.
- each coolant space section 8 For the targeted coolant distribution for each coolant space section 8 is the Longitudinal channel 13 of a respective gas exchange manifold 9 such from the cylinder head bottom section 3 'spaced through that the flow cross-section of the longitudinal channel 13 above the gas exchange manifold 9 to the upper opening 15 relative to the flow cross section under this collecting duct 9 lower opening 16 serves as a throttle cross section.
- a throttle cross section With this configuration is ensures that relatively cool coolant is connected from the pump outlet side Longitudinal channel 13 targeted and hot in a corresponding amount Valve land area 17 between separate, similar gas exchange channels 10 and 10 'is supplied by means of the guide ribs 18 and 18'.
- the upper opening 15 the longitudinal wall 14 is used to restrict the coolant Collecting channel 9 or the gas exchange channels 10, 10 'connected to them and in particular their valve guides 20, 20 '.
- each coolant compartment section 8 the separate gas exchange channels 10, 10 'each arranged along the side channel gas exchange manifold 9 opposite Gas exchange channels 11, 11 'beyond the dome 12 via a connected arrangement at least one near the floor to both sides towards the transverse walls 7 and 7 ' Coolant guidance, with projections 24 provided on the transverse walls 7, 7 ' the further coolant guide for transverse flow through the coolant chamber section 8 serve and the free cross sections between the connected Gas exchange channels 11, 11 'and the transverse walls 7, 7' and the top wall 4 on the outlet side Form throttling points.
- the invention is preferably used in a cylinder head 1 with an exhaust side of gas exchange outlet collecting channels 9 traversed longitudinal channel 13 with the essential Advantages of a uniform cylinder head temperature on the one hand and a high rigidity of the cylinder head 1 on the other hand.
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)
Description
Claims (7)
- Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmaschine,dadurch gekennzeichnet,mit einem zwischen Außenwänden (2) von einem Zylinderkopfboden (3) und einer beabstandeten Deckwand (4) begrenzten Kühlmittelraum (5), derzur Kühlmittel-Querströmung mittels zwischen Schraubenpfeifen (6) einer Zylinderkopfverschraubung vorgesehenen Querwänden (7, 7') in Abschnitte (8) unterteilt ist, wobeizwischen benachbarten Querwänden (7, 7') jeweils zu einem Gaswechsel-Sammelkanal (9, 9') vereinigte, gleichartige Gaswechselkanäle (10, 10'; 11, 11') zur jeweiligen Außenwand (2) gerichtet verlaufend angeordnet sind undinmitten der zylinderkopfseitig endenden Gaswechselkanäle (10, 10'; 11, 11') ein die Deckwand (4) durchsetzender Dom (12) für eine Zündkerze und/oder eine Einspritzdüse vorgesehen ist,daß der Zylinderkopf (1) zumindest einen von einem einwärts zur Zylinderkopf-Längsmittelebene geneigten Abschnitt (2') einer Außenwand (2) begrenzten Längskanal (13) aufweist, derferner von einem angrenzenden Zylinderkopf-Bodenabschnitt (3') und einer diesen mit dem Außenwand-Abschnitt (2') verbindenden Längswand (14) gebildet ist, wobeidie von dem Gaswechsel-Sammelkanal (9) durchsetzte Längswand (14) je eine ober und eine unter diesem Gaswechsel-Sammelkanal (9) angeordnete Durchbrechung (15, 16) aufweist, unddie jeweilige zylinderkopfbodenseitig untere, in ihrem Querschnitt in Abhängigkeit der Entfernung von einem einzigen Kühlmittelzulauf des Längskanals (13) gewählte Durchbrechung (16) mit auf einen freien Ventilstegbereich (17) zwischen gesonderten, gleichartigen Gaswechselkanälen (10, 10') gerichteten Leitrippen (18, 18') in Verbindung steht, diejeweils mit einem bodenseitigen Anschlußbereich des jeweiligen Gaswechselkanals (10, 10') eine Kühlmittelpassage (19, 19') bilden, unddaß die obere Durchbrechung (15) über dem Gaswechsel-Sammelkanal (9) der Kühlmittelbeaufschlagung von zwischen jeweiligen Gaswechselkanal (10, 10') und der Deckwand (4) ausgebildeten Ventilführungen (20, 20') dient.
- Zylinderkopf nach Anspruch 1, dadurch gekennzeichnet,daß die Schraubenpfeifen (6) zwischen der Deckwand (4) und dem Zylinderkopfboden (3) über etwa V-förmig angeordnete Wandungen (21) mit der Längswand (14) des Längskanals (13) in einstückiger Verbindung stehen zur Bildung eines Ölrücklaufkanals (22) mit einer in der Deckwand (4) vorgesehenen Zulauföffnung (22'), wobeidie Längswand (14) bodenseitig des Ölrückkanals (22) benachbart angeordnete Überströmöffnungen (23) aufweist.
- Zylinderkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet,daß der Längskanal (13) von einem jeweiligen Gaswechsel-Sammelkanal (9) derart vom Zylinderkopfbodenabschnitt (3') beabstandet durchsetzt ist, daßder Strömungsquerschnitt des Längskanals (13) über dem Gaswechsel-Sammelkanal (9) zur oberen Durchbrechung (15) relativ zu dem Strömungsquerschnitt unter diesem Gaswechsel-Sammelkanal (9) zur unteren Durchbrechung (16) als Drosselquerschnitt dient.
- Zylinderkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,daß die den gesonderten Gaswechselkanälen (10, 10') jedes längskanalseitigen Gaswechsel-Sammelkanals (9) gegenüberliegend angeordneten Gaswechselkanäle (11, 11') jenseits des Domes (12) über eine verbundene Anordnung eine bodennah nach beiden Seiten zu den Querwänden(7, 7') gerichtete Kühlmittelführung bilden, undan den Querwänden (7, 7') vorgesehene Vorsprünge (24) der weiteren Kühlmittelführung zur Querdurchströmung des Kühlmittelraum-Abschnittes (8) dienen, wobeidie freien Querschnitte zwischen dem Gaswechsel-Sammelkanal (9') der verbundenen Gaswechselkanäle (11, 11') und den Querwänden (7, 7') sowie der Deckwand (4) ablaufseitig Drosselstellen bilden.
- Zylinderkopf nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Leitrippen (18, 18') mit dem Zylinderkopfboden (3) und dem Gaswechsel-Sammelkanal (9) sowie den anschließenden, gesonderten Gaswechselkanälen (10, 10') jeweils in einstückiger Verbindung stehen.
- Zylinderkopf nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Längskanal (13) auslaßseitig von Gaswechselauslaß-Sammelkanälen (9) durchsetzt im Zylinderkopf (1) angeordnet ist.
- Zylinderkopf nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Längskanal (13) in einem Endbereich mit seinem einzigen Kühlmittelzulauf pumpenablaufseitig angeschlossen ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19802060A DE19802060A1 (de) | 1998-01-21 | 1998-01-21 | Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmaschine |
| DE19802060 | 1998-01-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0931925A2 EP0931925A2 (de) | 1999-07-28 |
| EP0931925A3 EP0931925A3 (de) | 2000-03-15 |
| EP0931925B1 true EP0931925B1 (de) | 2003-11-05 |
Family
ID=7855189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98123345A Expired - Lifetime EP0931925B1 (de) | 1998-01-21 | 1998-12-08 | Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0931925B1 (de) |
| DE (2) | DE19802060A1 (de) |
| ES (1) | ES2210649T3 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19934667B4 (de) * | 1999-07-23 | 2014-03-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Flüssigkeitsgekühlte Brennkraftmaschine |
| DE10048582B4 (de) * | 2000-09-30 | 2013-06-06 | Volkswagen Ag | Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine |
| DE10251360B4 (de) * | 2002-11-05 | 2005-01-20 | Daimlerchrysler Ag | Flüssigkeitsgekühlter Zylinderkopf |
| DE10257064A1 (de) * | 2002-12-06 | 2004-06-24 | Bayerische Motoren Werke Ag | Flüssigkeitsgekühlter, gegossener Zylinderkopf einer mehrzylindrigen Brennkraftmaschine |
| DE102004005749B4 (de) * | 2004-02-05 | 2014-01-02 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Kühlflüssigkeitsummantelter Zylinderkopf mit optimiertem Kühlflüssigkeitsraum |
| DE102006021175A1 (de) * | 2006-05-06 | 2007-11-08 | Bayerische Motoren Werke Ag | Zylinderkopf für eine Brennkraftmaschine |
| DE102006036422A1 (de) * | 2006-08-04 | 2008-02-21 | Bayerische Motoren Werke Ag | Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1838436A (en) * | 1929-12-20 | 1931-12-29 | Int Harvester Co | Internal combustion engine |
| US2368080A (en) * | 1942-07-22 | 1945-01-23 | Continental Motors Corp | Engine |
| JPH07103828B2 (ja) | 1987-11-17 | 1995-11-08 | 本田技研工業株式会社 | 水冷式多気筒エンジンのシリンダヘッド |
| DE3836941C1 (de) * | 1988-10-29 | 1989-06-15 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | |
| DE19608576C1 (de) | 1996-03-06 | 1997-06-19 | Daimler Benz Ag | Flüssigkeitsgekühlter Zylinderkopf für eine mehrzylindrige Brennkraftmaschine |
-
1998
- 1998-01-21 DE DE19802060A patent/DE19802060A1/de not_active Withdrawn
- 1998-12-08 EP EP98123345A patent/EP0931925B1/de not_active Expired - Lifetime
- 1998-12-08 DE DE59810082T patent/DE59810082D1/de not_active Expired - Lifetime
- 1998-12-08 ES ES98123345T patent/ES2210649T3/es not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0931925A2 (de) | 1999-07-28 |
| DE19802060A1 (de) | 1999-07-22 |
| EP0931925A3 (de) | 2000-03-15 |
| DE59810082D1 (de) | 2003-12-11 |
| ES2210649T3 (es) | 2004-07-01 |
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