WO2014180873A1 - Zylinderkopf für eine brennkraftmaschine - Google Patents
Zylinderkopf für eine brennkraftmaschine Download PDFInfo
- Publication number
- WO2014180873A1 WO2014180873A1 PCT/EP2014/059282 EP2014059282W WO2014180873A1 WO 2014180873 A1 WO2014180873 A1 WO 2014180873A1 EP 2014059282 W EP2014059282 W EP 2014059282W WO 2014180873 A1 WO2014180873 A1 WO 2014180873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inlet
- cylinder head
- cooling channel
- valve seat
- seat ring
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
-
- 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
- F01L3/12—Cooling of valves
-
- 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
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/01—Cooling
Definitions
- the invention relates to a cylinder head for an internal combustion engine having at least one cylinder, with at least one valve seat ring for a globe valve, wherein the valve seat ring is surrounded by a molded at least partially in the cylinder head annular cooling channel for a coolant, wherein the cooling channel surrounds the valve seat ring at least partially and extends between at least one inlet and at least one outlet.
- the publications GB 2 101 212 A, JP S59107009 U and JP S5935623 U show valve seat rings for globe valves of internal combustion engines, each with a cooling channel, in which open a plurality of entrances, and from which at least one branch branches off.
- the entries are each arranged symmetrically with respect to a meridian plane of the valve seat ring through the exit.
- WO 2010/145 940 A1 describes a cylinder head for an internal combustion engine with annular cooling passages around exhaust valve seat rings, with inlets and outlets of the annular cooling passages being arranged diametrically opposite with respect to the axis of the valve seat rings. Similar cooling channels to valve seats are known from DE 34 12 052 AI. However, these symmetrical cooling measures are not sufficient to effectively prevent thermal deformation of the exhaust valve bridges in high-performance engines.
- the CH 272 380 B or GB 668 962 A respectively describes a valve device of an internal combustion engine with inserted valve seat ring for a poppet valve, wherein the valve seat ring is surrounded by a circumferential cooling channel which extends between an inlet and an outlet. Between the inlet and the outlet, a separation region for the coolant is formed, which prevents a short-circuit flow between inlet and outlet.
- a similar cooling channel is also known from JP 57-015918 U l. Although this cooling channel arrangement allow asymmetric cooling of the valve seat rings, however, the heat dissipation due to the low flow rates is insufficient. adversely is also that the separation area between inlet and outlet forms an uncooled thermal bridge and this can lead to local overheating and thermal stresses, in particular when the separation region is positioned near the thermally highly stressed web between two outlet valves.
- the object of the invention is to avoid these disadvantages and to reduce valve wear.
- this is achieved in that several inlets open into the cooling channel, wherein preferably the inlets are arranged asymmetrically with respect to a meridian plane of the valve seat ring through the outlet.
- a meridian plane of the valve seat ring is here understood to mean a plane through a point of the curved surface of the valve seat ring, which contains its center of curvature.
- the meridian plane is thus spanned by a radial line and the ring axis of the valve seat ring.
- At least one inlet opens obliquely or tangentially into the cooling channel, so that the following applies: 0 ⁇ ⁇ 90 °, wherein the angle ⁇ between a center line of an inlet channel leading to this inlet and a tangent to the Cooling channel is clamped in the region of this entry, wherein preferably at least one entry of the angle ß ⁇ 80 °, preferably ⁇ 75 °.
- At least one inlet opens obliquely into the cooling channel, so that for the angle ⁇ : 0 ⁇ ⁇ 90 °.
- the outlet can be arranged diametrically in relation to the valve seat ring center, preferably opposite the inlet, preferably the radial one. lines of the inlet and the outlet can be arranged in a meridian plane of the valve seat ring.
- a preferably radial inlet can be arranged diametrically opposite the outlet with respect to the center of the valve seat ring, and wherein the cooling channel can have at least one further inlet, which preferably faces on a first side facing an outlet valve bridge a meridian plane of the valve seat ring is arranged through the outlet.
- the further inlet can be formed as a tangential inlet, which opens tangentially into the cooling channel, or as an oblique inlet, which opens obliquely into the cooling channel.
- a particularly preferred embodiment of the invention provides a radial inlet, an oblique inlet and a tangential entry, wherein the radial inlet diametrically to the outlet and the two other entries - oblique entry and tangential entry - on one side of a meridian plane of the valve seat ring through the outlet - In particular on the exhaust valve bridge side facing - can be arranged. This causes a good heat dissipation from the area of the exhaust valve bridge.
- At least two inlet channels are arranged so that their center lines passing through the respective entries at a point on a meridian plane of the valve seat ring or at a point in the region of a cooling jacket of a preferably centrally opening into a combustion chamber member, particularly preferably an injection device, cut.
- asymmetrical cooling with optimum heat dissipation from the outlet valve bridge can be achieved in a targeted manner.
- cooling channel - viewed in a section normal to the axis of the valve seat ring - in the region of at least one inlet and / or the outlet has at least one preferably substantially crescent-shaped bulge.
- a targeted heat removal from thermally highly stressed areas can be done if the bulge asymmetrical with respect to a meridian plane passing through the center of the entrance or exit.
- the eccentric arrangement of the bulge with respect to the center of the inlet or outlet leads to an asymmetrical distribution of the flow losses and thus the flow rates of the coolant in both branches of the annular cooling channel, so that the heat dissipation from both branches of the cooling channel is different.
- the radius r of the protrusion may be between 0.2 times and 0.8 times the outer radius R of the cooling channel, preferably between 0.4 times and 0.6 times the outer radius R of the cooling channel , This results in a favorable flow cross-sectional shape for the lowest possible flow losses and good cooling effect.
- Each entry stands in each case with a cast or drilled inlet channel, the outlet in fluid communication with a cast or drilled outlet channel of the cylinder head.
- the cooling channel of the valve seat ring is separated from the cooling system of the restlichten cylinder head. This makes it possible to use other pressures or cooling media for cooling the valve seat ring than, for example, for cooling the cylinder head.
- the inlet and the outlet can be connected to the lubricating oil system of the internal combustion engine.
- FIG. 1 shows a cylinder head according to the invention in a first embodiment in a section along the line I - I in Fig. 3,
- FIG. 2 shows a cylinder head according to the invention in a second embodiment in a section analogous to FIG. 1,
- FIG. 3 shows the cylinder head in a section along the line III-III in Fig. 1
- Fig. 4 shows the detail IV of Fig. 3
- FIG. 5 shows a cylinder head according to the invention in a third embodiment in a section analogous to FIG. 1,
- FIG. 6 shows a cylinder head according to the invention in a fourth embodiment in a section analogous to FIG. 1,
- FIG. 7 shows a cylinder head according to the invention in a fifth embodiment in a section analogous to FIG. 1, and 8 shows the cylinder head in a section along the line VIII - VIII in Fig. 7.
- the Fig. show a cylinder head 1 for at least one cylinder 11 of an internal combustion engine, with at least one formed by a non-illustrated lift valve exhaust valve 2, (of which only the exhaust valve opening is shown), wherein at least per outlet valve 2, a valve seat ring 3 arranged in the cylinder head 1, for example, pressed is.
- the axis of the valve seat ring 3 is designated by reference numeral 3a.
- the pressed into the cylinder head 1 or glued valve seat ring 3 is surrounded by a molded into the cylinder head 1, for example milled annular cooling channel 4 for a coolant, which between at least one inlet 5 and an outlet 6 over an angular range ⁇ of at least 180 ° to the Valve seat ring 3 extends.
- the inlet 5 stands with an inlet channel 5a, the outlet 6 with an outlet channel 6a in connection, wherein inlet channel 5a and outlet channel 6a may be formed by bores.
- the inlet channel 5a starts from a side surface la of the cylinder head 1 and is directed radially to the cylinder center I Ia.
- the outlet channel 6a opens.
- Fig. 1 shows a first embodiment of a cylinder head 1, wherein the cooling channel 4 in the mouth region of the inlet channel 5a in the cooling channel 4 - ie in the region of the inlet 5 - has a substantially sickle-shaped recess 10.
- the bulge 10 can essentially have a circular segment shape and be produced, for example, by a cutting tool, such as a milling cutter. But it is also a non-cutting production, for example by an electric discharge process conceivable.
- the radius r of the bulge is advantageously selected from the range 0.2 »R ⁇ r ⁇ 0.8» R, wherein preferably the radius r of the bulge 10 is between preferably 0.4 »R and 0.6» R.
- a bulge 10 formed in this way flow losses in the region of the inlet 5 can be substantially reduced.
- a similar bulge can be provided in an analogous manner in the region of the outlet 6 (not shown).
- the bulge 10 is arranged symmetrically to a through the center line 5 'extending plane ⁇ .
- FIG. 2 shows a second exemplary embodiment, which differs from FIG. 1 in that the bulge 10 is asymmetrical with respect to a meridian plane ⁇ passing through the center 5 "of the inlet 5 and / or through the meridian plane ⁇ Outlet 6 extending meridian plane ⁇ of the valve seat ring 3 is arranged.
- the flow losses when the coolant flows into the cooling channel 4 are reduced and, on the other hand, an asymmetrical quantity distribution of the coolant into the two annular sections 4a, 4b of the cooling channel 4 is effected.
- a higher heat dissipation can be achieved on one side of the meridional plane ⁇ or ⁇ than on the other side.
- FIG. 3 and FIG. 4 show the arrangement in a section in the meridian plane ⁇ , ⁇ , wherein in FIG. 4 of the entrance 5 is shown in detail.
- Fig. 5 shows the cylinder head 1 in a third embodiment, wherein in addition to a radial inlet channel 5a having radial inlet 5, a tangential inlet 15 is provided with a tangential inlet channel 15a.
- the tangential inlet channel 15a opens tangentially into the annular cooling channel 4. This results in a highly asymmetric coolant flow in the cooling channel 4, wherein according to the arrows S A , S B through the Auslrawventil Hampshire 12 facing portion 4a of the cooling channel 4 flows a higher amount of coolant than by the other remote portion 4b, so that the Cylinder head 1 on the side A of the meridian plane ⁇ and ⁇ of the valve seat ring 3 is cooled more than on the side B.
- Fig. 6 shows a fourth embodiment of the cylinder head 1, wherein, in addition to the radial inlet 5, a further inlet 25 is provided with a further inlet channel 25a similar to FIG.
- the further - inclined - inlet channel 25a opens on one side A of the plane ⁇ or ⁇ at an acute angle ß in the annular cooling channel 4, wherein the angle ß between a tangent t on the annular cooling channel 4 in the region of the other - oblique - Entry 25 and the center line 25 'of the second inlet channel 25 is clamped.
- the angle ß is selected between 0 ° and 90 °.
- the center line 25 'of the oblique inlet channel 25a is arranged tangentially to a circle of curvature k with the radius of curvature r of a bulge 10 of the first inlet 5. This results in a pronounced asymmetric flow of coolant corresponding to the arrows S A , S B in the cooling channel 4, wherein through the outlet valve bridge 12 facing portion 4a of the cooling channel 4, a higher amount of coolant flows, as by the other remote portion 4b.
- the cylinder head 1 is also here on the side A of the level ⁇ or ⁇ more cooled than on the side B.
- Fig. 7 shows a fifth embodiment of the cylinder head 1 with a combination of the in FIG. 5 and Fig. 6 illustrated measures.
- two further entrances - namely a tangential inlet 15 and an oblique inlet 25 are provided, wherein the one tangential inlet 15 has a tangential opening into the cooling channel 4 tangential inlet channel 15a and the oblique inlet 25 has an acute angled into the cooling channel 4 opening oblique inlet channel 25a.
- the oblique inlet channel 25a opens on an A side of the plane ⁇ and ⁇ at an acute angle ß in the annular cooling channel 4, wherein the angle ß between a tangent t on the annular cooling channel 4 in the region of the oblique inlet 25 and the center line 25th 'of the oblique inlet channel 25 is clamped.
- the angle ß is selected between 0 ° and 90 °.
- Both second inlet channels 15a, 25a open on one side A of the plane ⁇ and ⁇ in the annular cooling channel 4, which faces the exhaust valve bridge 12.
- the inlet channels 5, 15, 25 can be designed such that their center lines 5 ', 15', 25 'extending through the respective inlets 5, 15, 25 pass through a point P on a meridian plane ⁇ of the valve seat ring 3 Cut outlet 6.
- the point P is favorably located in the region of the cooling jacket 8 of the component 7 which opens centrally into the combustion chamber 14. This allows a simple production with simultaneously very effective heat removal from the area of the outlet valve bridge 12.
- the holes for the first and second inlet channels 5a, 15a, 25a are subsequently closed in the region of the side surface la of the cylinder head 1 by plugs 9, 19, 29.
- the inlet channels 5a, 15a, 25a of the inlets 5, 15, 25 can be connected to a pressure source in the cylinder head 13 flanged to the cylinder head 1 and (indicated in FIGS. 3 and 8) via vertical bores 5b, 15b, 25b the coolant flow from the inlets 5, 15, 25 to the outlets 6 takes place.
- the outlet channel 6a of the outlet 6 can be fluidly connected via the cooling jacket 8 of the central component 7 with the cooling jacket 8 of the cylinder head 1.
- embodiments with reversed coolant flow from the outlets 6 to the inlets 5, 15, 25 are conceivable, in which therefore the outlets 6 are connected to a pressure source and the inlets 5, 15, 25 to a pressure sink.
- the scope of the present application covers all possible coolant flow directions.
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)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112014001808.2T DE112014001808A5 (de) | 2013-05-08 | 2014-05-07 | Zylinderkopf für eine Brennkraftmaschine |
| CN201480036277.8A CN105556088B (zh) | 2013-05-08 | 2014-05-07 | 用于内燃机的缸盖 |
| US14/889,651 US9890738B2 (en) | 2013-05-08 | 2014-05-07 | Cylinder head for an internal combustion engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50314/2013A AT513746B1 (de) | 2013-05-08 | 2013-05-08 | Zylinderkopf für eine Brennkraftmaschine |
| ATA50314/2013 | 2013-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014180873A1 true WO2014180873A1 (de) | 2014-11-13 |
Family
ID=50792415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/059282 Ceased WO2014180873A1 (de) | 2013-05-08 | 2014-05-07 | Zylinderkopf für eine brennkraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9890738B2 (de) |
| CN (1) | CN105556088B (de) |
| AT (1) | AT513746B1 (de) |
| DE (1) | DE112014001808A5 (de) |
| WO (1) | WO2014180873A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3585990B1 (de) | 2017-02-24 | 2026-04-08 | Cummins Inc. | Motorkühlsystem mit gekühlten abgassitzen |
| AT519991B1 (de) | 2017-06-02 | 2019-07-15 | Avl List Gmbh | Zylinderkopf mit Ventilsitzringkühlung |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101212A (en) * | 1981-07-03 | 1983-01-12 | Sulzer Ag | A reciprocating piston internal combustion engine having a liquid- cooled exhaust valve seat |
| JPS5935623U (ja) * | 1982-08-31 | 1984-03-06 | ヤンマーディーゼル株式会社 | 排気弁座の冷却装置 |
| JPS59107009U (ja) * | 1983-01-07 | 1984-07-19 | 川崎重工業株式会社 | 弁座冷却型排気弁 |
| JPS59107008U (ja) * | 1983-01-07 | 1984-07-19 | 川崎重工業株式会社 | 弁座冷却型排気弁 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB668962A (en) * | 1949-03-09 | 1952-03-26 | Sulzer Ag | Improvements relating to machine parts with inserted valve seats |
| CH272380A (de) | 1949-03-09 | 1950-12-15 | Sulzer Ag | Ventileinrichtung an Brennkraftmaschinen. |
| JPS5935623B2 (ja) | 1979-04-05 | 1984-08-29 | 行雄 榊原 | 指圧医療器における押子駆動機構 |
| JPS56112269A (en) | 1980-02-08 | 1981-09-04 | Takuyo Kuchitsu | Got ball receiving apparatus in pinball machine |
| JPS59107009A (ja) | 1982-12-11 | 1984-06-21 | Nisshin Steel Co Ltd | 高炉のオ−ルコ−クス操業における高出銑比操業法 |
| DE3412052C2 (de) * | 1984-03-31 | 1987-02-26 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Kühlvorrichtung |
| DE4344696A1 (de) * | 1993-12-27 | 1995-06-29 | Tam Razvojno Tehnicni Inst Zna | Kühlung eines an einen Verbrennungskolbenmotorkopf angrenzenden Motorzylinderabschnitts |
| FI124071B (fi) * | 2006-11-14 | 2014-02-28 | Waertsilae Finland Oy | Mäntämoottorin venttiilin istukkarengas |
| AT506474B1 (de) * | 2009-06-15 | 2010-12-15 | Avl List Gmbh | Zylinderkopf für eine brennkraftmaschine |
| JP5715918B2 (ja) | 2011-09-22 | 2015-05-13 | 東京応化工業株式会社 | レジスト組成物、レジストパターン形成方法 |
| JP5935623B2 (ja) | 2012-09-18 | 2016-06-15 | 王子ホールディングス株式会社 | 展示機能付き包装箱 |
-
2013
- 2013-05-08 AT ATA50314/2013A patent/AT513746B1/de active
-
2014
- 2014-05-07 WO PCT/EP2014/059282 patent/WO2014180873A1/de not_active Ceased
- 2014-05-07 US US14/889,651 patent/US9890738B2/en not_active Expired - Fee Related
- 2014-05-07 DE DE112014001808.2T patent/DE112014001808A5/de active Pending
- 2014-05-07 CN CN201480036277.8A patent/CN105556088B/zh active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101212A (en) * | 1981-07-03 | 1983-01-12 | Sulzer Ag | A reciprocating piston internal combustion engine having a liquid- cooled exhaust valve seat |
| JPS5935623U (ja) * | 1982-08-31 | 1984-03-06 | ヤンマーディーゼル株式会社 | 排気弁座の冷却装置 |
| JPS59107009U (ja) * | 1983-01-07 | 1984-07-19 | 川崎重工業株式会社 | 弁座冷却型排気弁 |
| JPS59107008U (ja) * | 1983-01-07 | 1984-07-19 | 川崎重工業株式会社 | 弁座冷却型排気弁 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105556088B (zh) | 2018-08-31 |
| US20160108850A1 (en) | 2016-04-21 |
| AT513746A4 (de) | 2014-07-15 |
| AT513746B1 (de) | 2014-07-15 |
| US9890738B2 (en) | 2018-02-13 |
| CN105556088A (zh) | 2016-05-04 |
| DE112014001808A5 (de) | 2015-12-17 |
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