• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Cylinder head with a thread (2) for an ignition device, in particular a spark plug, and a cooling circuit (3) having at least one cooling cavity (4), wherein the cylinder head is cooled by conveying cooling medium through the cooling circuit (3) in operation, in the cooling circuit (3) a further cooling cavity (5) with an inner wall (6) and one of the inner wall (6) substantially opposite inlet opening (7) is provided and a through the inlet opening (7) entering cooling medium flow (J1) through the inner wall ( 6) is deflectable so that the cooling medium flow (J1) at least partially around the thread (2) leads around.
    公开号:AT514560A4
    申请号:T738/2013
    申请日:2013-09-25
    公开日:2015-02-15
    发明作者:Florian Becker
    申请人:Ge Jenbacher Gmbh & Co Og；
    IPC主号:
    专利说明:

    The present invention relates to a cylinder head having the features of the preamble of claim 1 and to an internal combustion engine having such a cylinder head.
    Since the spark plug thread of a cylinder head is relatively close to the area where some of the highest temperatures occur in the engine due to ignition, the spark plug thread is exposed to relatively high thermal stresses. In addition, since it is partially filigree compared to the surrounding structures, the need for cooling the spark plug thread may arise. This is especially true for gas engines with a precombustion system in which a flammable fuel-air mixture is combusted to ignite a very lean fuel-air mixture in a main combustion chamber.
    There are several prior art documents that address this problem. First, DE 699 26 065 T2 should be mentioned. By expanding a large cooling cavity coupled with a special shape of the extension, it is attempted to bring cooling medium close to the spark plug thread. The disadvantage here is that no directed flow can be formed near the spark plug thread. The cooling effect for the spark plug thread is limited in this document as the discharge of heated cooling medium is accomplished only by convection and similar processes. The same applies to EP 1 128 034 A2.
    Another approach to cooling the spark plug thread is from WO 2011/041805 A1. There it is proposed to apply a separate cooling circuit, which is provided only for cooling the spark plug and in particular the spark plug thread. It is thereby even possible to use a more suitable cooling medium, for example oil, for the specific purposes of cooling the spark plug thread. However, this is a very expensive solution, since it requires on the one hand a pump from the rest of the cooling circuit of the cylinder head and on the other hand because the additional cooling circuit must be almost completely applied in the spark plug sleeve. Thus, if a directed flow is to be formed in the vicinity of the spark plug thread, this entails a considerable manufacturing outlay for the application of the cooling channels in the spark plug sleeve.
    The object of the invention is to provide a cylinder head and an internal combustion engine with such a cylinder head, which allow effective cooling of the spark plug thread with moderate production costs.
    This object is achieved by a cylinder head with the features of claim 1 and by an internal combustion engine with such a cylinder head.
    This is done by providing in the cooling circuit a further cooling cavity having an inner wall and an inlet opening substantially opposite the inner wall, whereby a cooling medium flow entering through the inlet opening is deflectable through the inner wall such that the cooling medium flow at least partially passes around the thread.
    In particular, a part of the invention is that the further cooling cavity is part of the already existing cooling circuit for cooling the cylinder head, that is, the cooling is given in the ordinary operation by the cooling circuit of the cylinder head substantially.
    Another aspect of the invention is that there is provided a further cooling cavity surrounding the screw in which a directional positive flow is induced.
    Further advantageous embodiments of the invention are defined in the dependent claims.
    In order to allow a uniform or symmetrical cooling of the thread, it can be provided that the cooling medium flow through the inner wall can be split into two partial streams, which at least partially lead around the thread in a counter-sense. The effect of symmetric cooling can be enhanced by moving the cooling medium flow through a
    Outer wall of the further cooling cavity is deflected so that it leads completely around the thread.
    A possible symmetrical cooling of the thread may be advantageous because of excessive temperature differences resulting thermal stresses can lead to cracks and fractures.
    A simple discharge of the cooling medium can be achieved by deflecting the partial flows through the outer wall so that they are combined to form an outlet of cooling medium flow or by providing an outlet opening for the outlet of the cooling medium flow from the further cooling cavity. For ease of manufacture, it may be advantageous for the geometry of the inner wall and / or the outer wall to substantially correspond to the lateral surface of a cylinder.
    The already described effect of symmetrical cooling of the thread can be optimized by making the further cooling cavity substantially annular.
    A further adaptation of the further cooling cavity to the shape of the thread can be achieved in that the further cooling cavity has a substantially polygonal, preferably substantially rectangular, cross section. For a particularly simple production, it may be provided to form the further cooling cavity through a groove of an insert together with a spark plug sleeve, since it allows a relatively simple production of a curved, in particular annular, channel.
    The fact that, for the integration of the further cooling cavity in the cooling circuit at least one bore is provided in the spark plug sleeve, which is connected to the inlet opening and / or the outlet opening, a complex or. elaborate design of the spark plug sleeve can be avoided. For a particularly effective cooling of the thread it can be provided that a distance of the further cooling cavity to the thread is less than 40 mm, more preferably less than 20 mm and particularly preferably less than 10 mm.
    Further advantages and details of the invention will become apparent from the figures and the accompanying description of the figures. Showing:
    Fig. 1a is a sectional view through an inventive
    Cylinder head in a plane containing a cylinder axis, Fig. 1b is a schematic sectional view perpendicular to
    Cylinder axis,
    Fig. 2a shows a schematic arrangement of the further cooling cavity in the cooling circuit and
    2b shows another embodiment of an arrangement of the further cooling cavity in the cooling circuit.
    In Figure 1a, the further cooling cavity 5 can be seen. It is formed by an insert 10 together with the spark plug sleeve 12. In this embodiment, the insert 10 is crimped between the plug shell 12 and the component including the pre-chamber 21.
    The further cooling cavity 5 has an inner wall 6 formed in a groove 11 of the insert 10 and an outer wall 8 formed by the spark plug sleeve 12. The at least one cooling cavity 4 is in this case formed by a first cooling cavity 15 and a second cooling cavity 16, the second cooling cavity 16 being shown schematically in FIGS. 2a and 2b. The connection of the at least one cooling cavity 4 to the further cooling cavity 5 occurs through four bores 13 in the spark plug sleeve 12. These are designed so that they are easy to manufacture in the disassembled state of the spark plug sleeve 12.
    First, there are two longitudinal bores 13 a, which run parallel to a cylinder axis X and each produce a connection between the first cooling cavity 15 and the second cooling cavity 16. Two oblique holes 13b create the
    Inlet opening 7 and the outlet opening 9 and connect them with the previously described longitudinal bores 13 a. The angular position (with respect to the cylinder axis X) of the oblique bores 13b enables the production thereof, in that, with the insert 10 removed, the lower opening of the spark plug sleeve 12 is accessible to drills. Finally, the connection between the longitudinal bore 13a and the first cooling cavity 15 and the second cooling cavity 16 is interrupted by means of plugs 14.
    Since there is a pressure difference between the first cooling cavity 15 and the second cooling cavity 16 during operation, a cooling medium flow J1 entering the further cooling cavity 9 and an emerging cooling medium flow J4 are formed.
    In this embodiment, water is used as the cooling medium. However, this is not essential to the invention.
    The flow situation will be better illustrated with reference to FIG. 1b. It schematically shows the further cooling cavity 5, which is formed by the insert 10 and the spark plug sleeve 12. Schematically, the thread is further indicated 2.
    Through the inner wall 6, the incoming cooling medium flow J1 is divided into the two partial flows J2 and J3, which pass through the further cooling cavity 5 in opposite sense. The outer wall 8 holds the sub-streams J2 and J3 in a substantially circular path and merges them into an exiting cooling medium flow J4.
    Figure 2a shows schematically the entire refrigeration cycle 3 for the embodiment of Figures 1a and 1b. By means of a pump 18, the cooling medium - in this case water - is conveyed through a cooler 19. It enters first into the main cooling cavity 17 and then into the first cooling cavity 15. From there, the cooling medium passes in two parallel paths to the second cooling cavity 16, once a direct connection is provided and once a connection, which leads through the further cooling cavity 5. From the second cooling cavity 16, the cooling medium returns to the pump 18.
    2b differs from the embodiment shown in FIG. 2a in that the cooling medium is split after the main cooling cavity 17. A partial flow leads directly to the first cooling cavity 15, a second partial flow leads through the further cooling cavity 5.
    The present invention is not limited to the embodiments set forth herein. For example, it is possible to use the present concept also for cylinder heads without prechambers.
    Innsbruck, September 24, 2013
    权利要求:
    Claims (14)
    [1]
    Claims 1. A cylinder head with a thread (2) for an ignition device, in particular a spark plug, and a cooling circuit (3) having at least one cooling cavity (4), the cylinder head being coolable in operation by conveying cooling medium through the cooling circuit (3), characterized in that a further cooling cavity (5) with an inner wall (6) and an inner wall (6) substantially opposite inlet opening (7) is provided in the cooling circuit (3), wherein a through the inlet opening (7) entering cooling medium flow (J1) through the inner wall (6) is deflectable so that the cooling medium flow (J1) at least partially around the thread (2) leads around.
    [2]
    A cylinder head according to claim 1, characterized in that the cooling medium flow (J1) is split by the inner wall (6) into two partial streams (J2, J3) which at least partly run around the thread (2) in opposite sense.
    [3]
    3. Cylinder head according to claim 1 or 2, characterized in that the cooling medium flow (J1) through an outer wall (8) of the further cooling cavity (5) is deflected so that it completely around the thread (2) leads around.
    [4]
    Cylinder head according to claim 2 and 3, characterized in that the part flows (J2, J3) are deflectable through the outer wall (8) so as to be combined into an outflowing cooling medium flow (J4).
    [5]
    5. Cylinder head according to one of claims 1 to 4, characterized in that an outlet opening (9) for the outlet of the cooling medium flow (J1, J2, J3, J4) from the further cooling cavity (5) is provided.
    [6]
    6. Cylinder head according to one of claims 1 to 5, characterized in that the geometry of the inner wall (6) and / or the outer wall (8) corresponds substantially to the lateral surface of a cylinder.
    [7]
    Cylinder head according to one of claims 1 to 6, characterized in that the further cooling cavity (5) is substantially annular.
    [8]
    Cylinder head according to one of claims 1 to 7, characterized in that the further cooling cavity (5) has a substantially polygonal, preferably substantially rectangular, cross-section.
    [9]
    Cylinder head according to one of claims 1 to 8, characterized in that the further cooling cavity (5) is formed by a groove (11) of an insert (10) together with a spark plug sleeve (12).
    [10]
    10. Cylinder head according to one of claims 1 to 9, characterized in that for the integration of the further cooling cavity (5) in the cooling circuit (3) at least one bore (13) in the spark plug sleeve (12) is provided, which with the inlet opening (7) and / or the outlet opening (9) is connected.
    [11]
    11. Cylinder head according to one of claims 1 to 10, characterized in that a distance of the further cooling cavity (5) to the thread less than 40mm, preferably less than 20 mm and more preferably less than 10mm.
    [12]
    12. Cylinder head according to one of claims 1 to 11, characterized in that the cylinder head has a first cooling cavity (15) and a second cooling cavity (16), wherein the inlet opening (7) with the first cooling cavity (15) and the outlet opening (9 ) is connected to the second cooling cavity (16).
    [13]
    13. Internal combustion engine with a cylinder head according to one of claims 1 to 12.
    [14]
    An internal combustion engine according to claim 13, characterized in that the internal combustion engine has a main cooling cavity (17) for cooling the engine block, the inlet (7) being connected to the main cooling cavity (17) and the outlet (9) being connected to the at least one cooling cavity (4) ,
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    同族专利:
    公开号 | 公开日
    CN104454220A|2015-03-25|
    JP2015072005A|2015-04-16|
    DE102014011343A1|2015-03-26|
    KR20150034081A|2015-04-02|
    US20150083058A1|2015-03-26|
    FI20145816A|2015-03-26|
    AT514560B1|2015-02-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0222621U|1988-07-29|1990-02-15|
    DE69926065T2|1999-10-08|2006-05-18|Caterpillar Inc., Peoria|Assembly of a cooled prechamber|
    EP1128034A2|2000-02-22|2001-08-29|Jenbacher Aktiengesellschaft|Fastening sleeve for spark plug|
    WO2011041805A1|2009-10-07|2011-04-14|Ge Jenbacher Gmbh & Co Ohg|Internal combustion engine ignition device|
    US1539133A|1920-08-13|1925-05-26|Harry Newton Hocken|Spark-plug attachment|
    US3765384A|1971-12-03|1973-10-16|J Barnard|Cooling systems for internal combustion engines|
    JPS61122320U|1985-01-19|1986-08-01|CN106870095B|2017-01-23|2019-12-10|江苏盛源燃气动力机械有限公司|Water jacket type pre-combustion ignition system|
    CN106870117B|2017-01-23|2019-06-04|江苏盛源燃气动力机械有限公司|Water-cooled pre-burning device|
    CN106884706B|2017-01-23|2019-12-10|江苏盛源燃气动力机械有限公司|Water jacket type pre-burning device|
    US10724423B2|2017-02-16|2020-07-28|Caterpillar Inc.|Vented pre-chamber assembly for an engine|
    CN106930819B|2017-03-23|2019-05-07|江苏盛源燃气动力机械有限公司|Water jacket air-cooled type pre-burning device|
    CN107143416B|2017-03-23|2019-06-04|江苏盛源燃气动力机械有限公司|Water cooling air-cooled type pre-burning ignition system|
    CN106948923B|2017-03-23|2019-05-07|江苏盛源燃气动力机械有限公司|Water cooling air-cooled type pre-burning device|
    CN107044337B|2017-04-05|2019-03-15|江苏盛源燃气动力机械有限公司|Large-diameter single cylinder gas internal-combustion engine and multi-cylinder gas internal-combustion engine|
    US10385800B2|2017-06-02|2019-08-20|Caterpillar Inc.|Cylinder head assembly, cylinder head, and method|
    EP3521585A1|2018-02-01|2019-08-07|Innio Jenbacher GmbH & Co OG|Prechamber device for combustion engine|
    DE102019105035A1|2019-02-27|2020-08-27|Konvekta Aktiengesellschaft|Heat pump with part load control|
    US11092063B1|2020-03-12|2021-08-17|Ford Global Technologies, Llc|Systems and methods for engine pre-chamber coolant flow|
    CN111828216A|2020-06-28|2020-10-27|上海中船三井造船柴油机有限公司|Cooling structure of fuel injector precombustion chamber of dual-fuel diesel engine|
    CN113915020A|2021-10-20|2022-01-11|扬州工业职业技术学院|Engine cylinder spring sealing cover|
    法律状态:
    2019-05-15| MM01| Lapse because of not paying annual fees|Effective date: 20180925 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA738/2013A|AT514560B1|2013-09-25|2013-09-25|cylinder head|ATA738/2013A| AT514560B1|2013-09-25|2013-09-25|cylinder head|
    JP2014150340A| JP2015072005A|2013-09-25|2014-07-24|Cylinder head|
    KR20140096424A| KR20150034081A|2013-09-25|2014-07-29|Cylinder head|
    DE102014011343.4A| DE102014011343A1|2013-09-25|2014-07-31|cylinder head|
    CN201410439710.4A| CN104454220A|2013-09-25|2014-09-01|CYLINDER HEAD and internal combustion engine comprising the same|
    US14/486,013| US20150083058A1|2013-09-25|2014-09-15|Cylinder head|
    FI20145816A| FI20145816A|2013-09-25|2014-09-18|CYLINDER HEAD|
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