WO2018218268A1 - Culasse à refroidissement de la bague de siège de soupape - Google Patents

Culasse à refroidissement de la bague de siège de soupape Download PDF

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Publication number
WO2018218268A1
WO2018218268A1 PCT/AT2018/060112 AT2018060112W WO2018218268A1 WO 2018218268 A1 WO2018218268 A1 WO 2018218268A1 AT 2018060112 W AT2018060112 W AT 2018060112W WO 2018218268 A1 WO2018218268 A1 WO 2018218268A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
inlet
valve seat
cylinder head
outlet
Prior art date
Application number
PCT/AT2018/060112
Other languages
German (de)
English (en)
Inventor
Andreas Zurk
Robert Pöschl
Original Assignee
Avl List Gmbh
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 Avl List Gmbh filed Critical Avl List Gmbh
Priority to JP2019566696A priority Critical patent/JP2020521914A/ja
Priority to CN201880036379.8A priority patent/CN110709596B/zh
Publication of WO2018218268A1 publication Critical patent/WO2018218268A1/fr

Links

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
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • 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
    • F01L3/12—Cooling of valves
    • F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
    • F01L3/18—Liquid cooling of valve
    • 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
    • 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
    • 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
    • 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 

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 associated with an annular cooling channel, at least between at least one inlet opening of an inlet channel and at least one
  • Outlet opening of an outlet channel extends at least partially around the valve seat, wherein the inlet and outlet channel are arranged on the same side of the cylinder.
  • Applicant's AT 513 262 B1 shows a solution in which inlet and outlet are made on the same cylinder side and the valve seat flows around in an angle range of at least 280 °.
  • the short-circuit flow resulting between inlet and outlet is restricted by a restrictor - this prevents the formation of an uncooled thermal bridge in the area of the short-circuit flow, local overheating and thermal stresses and, on the other hand, the majority of the coolant over the long term flows around.
  • Disadvantage of this solution is in particular the execution of the inlet and outlet channels, which are designed to run parallel and impinge in the radial direction on the valve seat ring cooling, resulting in traffic jams and a faulty inflow.
  • the design of the throttle during production also means additional effort.
  • the entrances are arranged asymmetrically with respect to a meridian plane of the valve seat ring.
  • the inlet channel preferably opens substantially tangentially through the inlet opening into the annular cooling channel, that a
  • Outlet channel in over the outlet opening in an angular range between
  • the annular cooling passage of a valve seat ring is charged by the same cylinder side with coolant as well as the coolant is discharged, wherein the inlet channel and the outlet channel flow around the valve seat ring over an angular range between 195 ° and 345 °.
  • the specified angle range is the absolute value, regardless of whether the valve seat ring is flowed through in a clockwise or counterclockwise direction.
  • the annular cooling channel extends completely around the valve seat ring and in the flow direction the Umströmungsweg between the inlet and outlet openings and a short-circuit path between the outlet and the inlet opening extends. This allows complete flow and cooling of the valve seat ring. Thanks to the invention, an even more efficient cooling of the thermally highly stressed areas of a valve seat ring is possible because the inflow and outflow takes place with a low pressure loss. For this reason, only a small forms
  • the invention thus allows optimum cooling of valve seats with minimal manufacturing effort.
  • the inlet and the outlet channel extend in a common first plane. This must be e.g. when drilling the drill are not laboriously moved and readjusted. At the same time, only a minimal material thickness is influenced by the channels in the direction along the cylinder longitudinal axis.
  • the inlet channel extends in a first plane and the outlet channel in a second plane.
  • the first level is different than the second level.
  • the first plane runs parallel to the second plane.
  • a comparatively simple production can also be ensured since, for example, fewer adjustment steps are necessary during drilling.
  • At least the outlet channel is connected to a cylinder head cooling jacket.
  • Valve openings are provided a particularly good cooling thermally highly loaded areas is ensured when the inlet channel is arranged on the valve of a valve bridge between the valve openings side facing the valve seat. The same can be achieved if two exhaust valves with associated
  • Intake valve openings are provided and at least the inlet channels are arranged in annular cooling channels of the valve seat rings of the exhaust valve openings on the exhaust valve bridge side facing the valve seat rings.
  • Figure 1 is a plan view of a horizontal section through the cylinder head along line l-l in Fig. 7.
  • Fig. 2 is a fragmentary side view of the cylinder head of Fig. 1;
  • Fig. 3 shows a detail of a combustion chamber side view of a
  • FIG. 4 shows a detail of a vertical section through the cylinder head along the line IV-IV in Fig. 1.
  • 5 shows a detail of a vertical section through the cylinder head along the line VV in FIG. 1;
  • FIG. 6 shows a section of a vertical section through the cylinder head along the line Vl-Vl in Fig. 1.
  • FIG. 7 shows a detail of a vertical section through the cylinder head along the line VII-VII in FIG. 1;
  • FIG. 8 is a schematic representation of a section of a combustion chamber side plan view of a horizontal section through the cylinder head of FIG. 3rd
  • FIG. 1 The figures show in the illustrated embodiment fragmentary a cylinder head 1 for at least one cylinder of an internal combustion engine. As shown in Fig. 1, the cylinder head is provided with two designed as a lift valves inlet and two exhaust valves - in the figures are the
  • a further opening for example as a central opening 4 for an injection device is provided.
  • a valve seat ring 5 is arranged in the cylinder head 1, for example, pressed or glued, as shown in FIGS. 4-7 is apparent.
  • the pressed into the cylinder head 1 or glued valve seat ring 5 is surrounded by an annular cooling channel 6, 6 'for a coolant which at least between a (valve side) inlet opening 70, 70' of an inlet channel 7, 7 'and a (valve side) outlet opening 80th '80' of an outlet channel 8, 8 'extends at least partially around the valve seat.
  • the cooling channel 6, 6 'can thereby run completely in the valve seat ring 5 or - as in the illustrated embodiment - partly formed in the cylinder head 1, partly executed in the valve seat ring 5.
  • the cooling channel 6, 6 ' can also be completely formed in the cylinder head 1. Coolant is supplied from outside the cylinder / cylinder head 1 via the inlet channel 7 '(FIG. 4), flows via the inlet opening 70' (FIG. 5) into the annular cooling channel 6 'and exits at the outlet opening 80' (FIG. 6). from the cooling channel 6 'into an outlet channel 8' (FIG. 7), from where it continues to flow.
  • Coolant is supplied from outside the cylinder / cylinder head 1 via the inlet channel 7 '(FIG. 4), flows via the inlet opening 70' (FIG. 5) into the annular cooling channel 6 'and exits at the outlet opening 80' (FIG. 6). from the cooling channel 6 'into an outlet channel 8' (FIG. 7), from where it continues to flow.
  • the illustrated inlet channel 7 ' Coolant is supplied from outside the cylinder / cylinder head 1 via the inlet channel 7 '(FIG. 4), flows via the inlet opening 70
  • the annular cooling channel 6, 6 ' extends completely around the valve seat ring 5.
  • Entry 7, 7 'and outlet channel 8, 8' are formed, for example, by outgoing from a side surface of the cylinder head 1 holes, as shown in Fig. 2 can be seen.
  • inlet 7, 7 'and outlet channel 8, 8' are arranged on the same side of the cylinder - on the outlet side in the present example.
  • Outlet opening 80 is smaller than 180 °, conveniently smaller than 100 °.
  • Center angle ⁇ is the angle between the radial connections between the valve seat ring center 50 on the one hand and the inputs 7 and
  • Outlet channel 8 on the other hand, in particular the point where a longitudinal central axis of the inlet channel (entrance longitudinal central axis 77) and the outlet channel
  • annular cooling channel between inlet 70, 70 'and outlet opening 80, 80' and thus the region of the Umstromungswegs 90 extends over an angular range of 360 ° - ⁇ to the Ventilsitznng 5.
  • the angular range between 195 ° and 345 °. It has been found that with this angular range of the Umstromungswegs 90, 90 ', a best possible heat dissipation from thermally critical areas of the cylinder head 1 can be done.
  • the inlet channel 7, 7 'in the embodiment shown opens tangentially via the inlet opening 70 into the annular cooling channel 6, 6'. Tangential in the context of the present disclosure means that - within manufacturing tolerances - elements of
  • the shape of the inputs 70, 70 'and outlet openings 80, 80' is thus approximately elliptical in each case.
  • the outlet channel 8, 8 ' can branch off from the annular cooling channel 6 in an angular range between tangential and radial direction.
  • Tangential direction here means that the flow direction in the outlet channel 8, 8 'corresponds to the flow direction in the cooling channel 6, ie the angle is 0 °.
  • Radial direction means here that the angle between the flow direction in the cooling channel 6 and in the outlet channel 8, 8 X 90 °.
  • a favorable cooling effect results in the illustrated embodiment, in particular also by the fact that the inlet channel 7, 7 'is arranged or opens on the one valve bridge 100 between the exhaust valves facing side of the valve seat ring 5. Especially in the area of the exhaust side
  • Valve bridge 100 a high thermal load occurs, the freshly supplied, a comparatively low temperature having coolant can develop a particularly good effect here. Even with variants with fewer valves, it is favorable if the inlet channels 7, 7 'extend on the sides of the valve bridges 100.
  • FIG. 8 shows an illustration where an inlet channel 7 'opens into an annular cooling channel 6 and an outlet channel 8' emerges again. In this case, an angle scale is shown, the entry of the inlet channel 7 '0 °, the outlet of the
  • Outlet channel 8 ' takes place between 225 ° and 270 °; This results in a Umstromung in the inventive range of 195 ° to 345 °.
  • the direction of the outlet channel 8 ' is between tangential and radial - the exit angle ß is thus between 0 ° (tangential course) and 90 ° (radial course).
  • the discharge channel 8 'shown in solid lines has a very flat course, while an outlet channel 8' shown by dashed lines runs at an angle ⁇ near 90 °.
  • Valve seat ring center points 50 of the exhaust valve openings 2a, 2b is one
  • inlet 7, 7 'and outlet channels 8, 8' extend in a common first plane, wherein the first plane lies in the plane of the page.
  • the inlet channel 7, 7 'extends per valve seat in the first plane and the outlet channel 8, 8' in a second level - Fig. 4 shows this variant with a dashed running outlet channel 8 ', which is slightly offset in the direction of a cylinder head density plane 1 10.
  • the first level runs normal to the leaf level and falls with the
  • the second plane is also normal to the page level and coincides with the exit longitudinal central axis 88' together.
  • the first plane is parallel to the second plane, both are parallel to the plane
  • Cylinder head sealing plane 1 10 or to a valve seat ring plane 500 (see, for example, Fig. 6), which is defined by the valve seat ring 5 and in the illustrated embodiment, parallel to the cylinder head density plane 1 10 extends.
  • the first and second planes also run normal to the valve axis 55 in the illustrated embodiment (see Figures 5-7).
  • the first plane is oblique to the second plane - this embodiment is recognizable by the dashed line inlet channel 7 '. Both levels are normal again to the leaf level, with the first level with the
  • Outlet channel 8, 8 ' With a in the direction of the cylinder head density level 1 10th
  • Outlet channel 8, 8 ' is closed after connection with the cylinder head cooling jacket 120 on the outside of the cylinder head 1 with a plug 130, 130'.
  • valve seat cooling can be done with a separate cooling circuit.
  • the invention thus enables optimal, low-turbulence cooling of the
  • Valve seat which is easy to produce and manages without elaborate processing steps. Due to the inventive angular range of Umströmungswegs 90, 90 'and the angular course of the outlet channel optimal cooling of the valve seat 5, 5' and complete Umstromung can also be achieved by the Kurz practitionerweg.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne une culasse (1) pour un moteur à combustion interne. La culasse comprend au moins un cylindre, au moins une bague de siège de soupape (5) pour une soupape de levage. Un conduit de refroidissement (6, 6') annulaire, qui s'étend au moins en partie autour du siège de soupape au moins entre au moins une ouverture (70, 70') d'entrée d'un conduit (7, 7') d'entrée et au moins une ouverture (80, 80') de sortie d'un conduit (8, 8') de sortie, est associé à la bague de siège de soupape (5). Le conduit (7, 7') d'entrée et le conduit (8, 8') de sortie sont agencés sur le même côté du cylindre. Pour un meilleur refroidissement du siège de soupape et une fabrication simplifiée, le conduit (7, 7') d'entrée débouche dans la direction tangentielle dans le conduit de refroidissement (6, 6') en passant par l'ouverture (70, 70') d'entrée et le conduit (8, 8') de sortie bifurque du conduit de refroidissement (6, 6') dans la direction tangentielle en passant par l'ouverture (80, 80') de sortie.
PCT/AT2018/060112 2017-06-02 2018-05-30 Culasse à refroidissement de la bague de siège de soupape WO2018218268A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019566696A JP2020521914A (ja) 2017-06-02 2018-05-30 バルブシートリング冷却を伴うシリンダヘッド
CN201880036379.8A CN110709596B (zh) 2017-06-02 2018-05-30 具有气门座环冷却机构的缸头

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50470/2017A AT519991B1 (de) 2017-06-02 2017-06-02 Zylinderkopf mit Ventilsitzringkühlung
ATA50470/2017 2017-06-02

Publications (1)

Publication Number Publication Date
WO2018218268A1 true WO2018218268A1 (fr) 2018-12-06

Family

ID=62683068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2018/060112 WO2018218268A1 (fr) 2017-06-02 2018-05-30 Culasse à refroidissement de la bague de siège de soupape

Country Status (5)

Country Link
JP (1) JP2020521914A (fr)
CN (1) CN110709596B (fr)
AT (1) AT519991B1 (fr)
DE (1) DE102017219646A1 (fr)
WO (1) WO2018218268A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH272380A (de) * 1949-03-09 1950-12-15 Sulzer Ag Ventileinrichtung an Brennkraftmaschinen.
CN201351542Y (zh) * 2008-12-25 2009-11-25 中国北车集团大连机车车辆有限公司 重油机钻孔冷却阀座式气缸盖
FR2955618A1 (fr) * 2010-01-26 2011-07-29 Motorisations Aeronautiques Culasse de moteur a combustion interne comportant un circuit de refroidissement
AT513746B1 (de) * 2013-05-08 2014-07-15 Avl List Gmbh Zylinderkopf für eine Brennkraftmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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
DE2729050A1 (de) * 1977-06-28 1979-01-25 Elsbett G Zylinderkopf fuer hubkolben-brennkraftmaschinen, insbesondere dieselmotoren
CH628399A5 (de) * 1978-05-26 1982-02-26 Sulzer Ag Anordnung zur kuehlung des zylinderdeckels eines viertakt-dieselmotors.
JP3073275B2 (ja) * 1991-07-24 2000-08-07 ヤンマーディーゼル株式会社 水冷式内燃機関のシリンダヘッド
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
AT513053B1 (de) * 2012-06-26 2014-03-15 Avl List Gmbh Brennkraftmaschine, insbesondere Großdieselmotor
AT513262B1 (de) * 2013-01-29 2014-03-15 Avl List Gmbh Zylinderkopf für eine Brennkraftmaschine
AT513383B1 (de) * 2013-05-08 2014-04-15 Avl List Gmbh Zylinderkopf für eine Brennkraftmaschine
DE102014017756A1 (de) * 2014-11-29 2016-06-02 Daimler Ag Zylinderkopf für eine Verbrennungskraftmaschine und Verfahren zum Herstellen eines Zylinderkopfes
CN104847521A (zh) * 2015-05-13 2015-08-19 柳州金盾机械有限公司 一种装载机汽缸盖结构
CN105240139A (zh) * 2015-11-02 2016-01-13 重庆金花玻璃钢有限公司 能改善涡流比和气门部冷却的发动机缸盖

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH272380A (de) * 1949-03-09 1950-12-15 Sulzer Ag Ventileinrichtung an Brennkraftmaschinen.
CN201351542Y (zh) * 2008-12-25 2009-11-25 中国北车集团大连机车车辆有限公司 重油机钻孔冷却阀座式气缸盖
FR2955618A1 (fr) * 2010-01-26 2011-07-29 Motorisations Aeronautiques Culasse de moteur a combustion interne comportant un circuit de refroidissement
AT513746B1 (de) * 2013-05-08 2014-07-15 Avl List Gmbh Zylinderkopf für eine Brennkraftmaschine

Also Published As

Publication number Publication date
CN110709596B (zh) 2022-06-07
CN110709596A (zh) 2020-01-17
DE102017219646A1 (de) 2018-12-06
JP2020521914A (ja) 2020-07-27
AT519991A1 (de) 2018-12-15
AT519991B1 (de) 2019-07-15

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