• 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:
    A prechamber arrangement (1) for a cylinder of an internal combustion engine, with a body section (3) for fastening the prechamber arrangement (1) to a cylinder head (2) of a cylinder of the internal combustion engine, and with a nozzle section (4), which is joined to the body section (3) and comprises nozzle orifices (7), via which a prechamber combustion chamber (5) of the prechamber arrangement (1) of the cylinder defined by the body section (3) and the nozzle section (4) is connected to a main chamber combustion chamber (6) of the cylinder, wherein the body section (3), which is non-detachably joined to the nozzle section (4), projects beyond the cylinder head (2) into the main chamber combustion chamber (6), so that the prechamber combustion chamber (5) and the main chamber combustion chamber (6) in the region of a section (8) of the prechamber arrangement (1) projecting into the main chamber combustion chamber (6) are separated from one another on the one hand by the body section (3) and on the other hand by the nozzle section (4).
    公开号:FI20185706A1
    申请号:FI20185706
    申请日:2018-08-29
    公开日:2019-03-05
    发明作者:Martin Lenz；Sascha Stoll
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Prechamber arrangement
    The invention relates to a prechamber arrangement.
    From EP 2 205 48 Bl a prechamber arrangement for a cylinder of an internal combustion engine is known. The prechamber arrangement disclosed there comprises a body section and a nozzle section. The body section serves for fastening the prechamber arrangement to a cylinder head of a cylinder of the internal combustion engine. The nozzle section is connected to the body section and comprises nozzle orifices, via which a prechamber combustion chamber of the prechamber arrangement defined by the body section and the nozzle section is connected to a main chamber combustion chamber. That section of the prechamber arrangement, with which the same projects into the main chamber combustion chamber, is completely provided by the nozzle section. Body section and nozzle section are connected to one another via at least one locking part.
    There is a need for a prechamber arrangement, which is less susceptible to wear. Starting out from this, the present invention is based on the object of creating a new type of prechamber arrangement.
    This object is solved through a prechamber arrangement according to Claim 1 . According to the invention, the body section, which is non-detachably joined to the nozzle section, projects beyond the cylinder head into the main chamber combustion chamber, so that the prechamber combustion chamber and the main chamber combustion chamber are separated from one another in the region of a section of the prechamber arrangement projecting into the main chamber combustion chamber by the body section on the one hand and by the nozzle section on the other hand. By way of this, a prechamber arrangement is provided that is less susceptible to wear .
    According to an advantageous first further development of the invention, the prechamber arrangement, on a side of the section of the prechamber arrangement projecting into the main chamber combustion chamber facing the main chamber combustion chamber, the prechamber arrangement in the region of the nozzle orifices is defined or delimited by the nozzle section and between adjacent nozzle orifices as well as between the nozzle orifices and the cylinder head by the body section. Because of this, the susceptibility to wear of the prechamber arrangement on the side facing the main chamber combustion chamber of the section of the prechamber arrangement projecting into the main chamber combustion chamber is reduced.
    20185706 prh 29 -08- 2018
    According to a further development of the invention, the prechamber arrangement, on a side of the section of the prechamber arrangement projecting into the main chamber combustion chamber facing the prechamber combustion chamber, is exclusively defined or delimited by the nozzle section. Because of this, a low susceptibility to wear of the prechamber arrangement is provided on the side facing the prechamber combustion chamber .
    20185706 prh 29 -08- 2018
    According to a further development of the invention, the prechamber arrangement on the side facing the prechamber combustion chamber in the region of the section of the prechamber arrangement projecting into the main chamber combustion chamber is defined or delimited on the one hand in sections by the body section and on the other hand in sections by the nozzle section. These features also serve for reducing the susceptibility to wear of the prechamber arrangement on the side facing the prechamber combustion chamber.
    The method for producing the prechamber arrangement according to the invention is defined in Claim 9.
    Preferred further developments of the invention are obtained from the subclaims and the following description. Exemplary embodiments of the invention are explained in more detail by way of the drawing without being restricted to this. There it shows:
    Fig. 1: a schematic cross section through a prechamber arrangement according to the invention.
    The invention relates to a prechamber arrangement for a cylinder of an internal combustion engine.
    Fig. 1 shows a schematic cross section through a prechamber arrangement 1 according to the invention for a cylinder of an internal combustion engine, which is fastened to a cylinder head 2 of the cylinder.
    20185706 prh 29 -08- 2018
    The prechamber arrangement 1 comprises a body section 3 and a nozzle section 4. By way of the body section 3, the prechamber arrangement 1 is fastened to the cylinder head 2 of the cylinder.
    Nozzle section 4 and body section 3 jointly delimit a prechamber combustion chamber 5, which is connected to a main chamber combustion chamber 6 of the cylinder via nozzle orifices 7, wherein these nozzle orifices 7 are provided by the nozzle section 4 of the prechamber arrangement 1.
    In the state of the prechamber arrangement 1 mounted to the cylinder head 2, the prechamber arrangement 1 projects with a section 8 beyond the cylinder head 2 into the main chamber combustion chamber 6. A further section 9 of the prechamber arrangement 1 does not project into the main chamber combustion chamber 6 of the cylinder 2.
    The body section 3 and the nozzle section 4 are directly and non-detachably joined to one another. The body section 3, together with the nozzle section 4, projects beyond the cylinder head 2 into the main chamber combustion chamber 6 of the cylinder, namely in such a manner that the prechamber combustion chamber 5 and the main chamber combustion chamber 6 are separated from one another in the region of the section 8 of the prechamber arrangement 1 projecting into the main chamber combustion chamber 6 on the one hand and by the body section 4 and by the nozzle section 3 on the other hand. Because of this, a separating region of a prechamber combustion chamber 5 and main chamber
    20185706 prh 29 -08- 2018 combustion chamber 6 can be provided on the prechamber arrangement 1, which is particularly non-susceptible to wear. The body section 3 is preferentially produced from a metallic material. The nozzle section 4 is produced from a material that is highly resistant to the wear load such as for example from another metallic material with high corrosion resistance or from a ceramic material.
    On a side 10 facing the main chamber combustion chamber 6 of the section 8 of the prechamber arrangement 1 projecting into the main chamber combustion chamber 6, the prechamber arrangement 1 is defined or delimited in the region of the nozzle orifices 7 by the nozzle section 4 and between adjacent nozzle orifices 7 and between the nozzle orifices 7 and the cylinder head 2 by the body section 3 so that accordingly on the side 10 facing the main chamber combustion chamber 6 of the section 8 of the prechamber arrangement 1 projecting into the main chamber combustion chamber 6 the same has different material properties.
    On a side 12 facing the prechamber combustion chamber 5 of the section 8 of the prechamber arrangement 1 projecting into the main chamber combustion chamber 6, the prechamber arrangement 1 is exclusively defined or delimited by the nozzle section. Furthermore, the prechamber arrangement 1 on a side 11 facing the prechamber combustion chamber 5 is defined in the region of the section 9 of the prechamber arrangement 1 which does not project into the main chamber combustion chamber 6 on the one hand in sections by the nozzle section 4 and on the other hand in sections by the body section 3.
    As already explained, the body section 3 and the nozzle section 4 are noon-detachably joined to one another. Furthermore, the body section 3 and the nozzle section 4 are directly joined to one another, i.e. directly without further fastening means.
    According to an advantageous further development of the invention, the body section 3 on the side 10 facing the main chamber combustion chamber 6 has a corrosion protection and/or heat insulation protection in the region of the section 8 of the prechamber arrangement 1 projecting into the main chamber combustion chamber 6 and/or on the side facing the prechamber combustion chamber 5 in the region of the section 9 of the prechamber arrangement 1 not projecting into the main chamber combustion chamber 6.
    In particular the corrosion projection is formed here by a surface treatment of the body section 3, wherein during a surface treatment subject to forming the corresponding protective layer, the base material of
    20185706 prh 29 -08- 2018 the body material, treatment, oxidizing section 3 which is for example undergoes or alitizing.
    a bond with another employed during the surface through nitriding, carburizing ,
    Preferentially, a corrosion protection is formed here by way of a diffusion surface treatment method. With such a diffusion method, a diffusion material, which can be for example a metallic diffusion material, is diffused into the metallic base material of the body section 3.
    A contact of the diffusion material with the surface of the body section 3 to be treated is provided here for example via a liquid or pasty dispersion or suspension. Likewise, the diffusion material can be kept ready as powder or in a gas phase.
    According to a particularly advantageous further development it is provided that the body section 3 and/or the nozzle section 4, on the side 10 facing the main chamber combustion chamber 6, in the region of the section 8 projecting into the main chamber combustion chamber 6 and in the region of the side facing the prechamber combustion chamber 5 in the region of the section 9 not projecting into the main chamber combustion chamber each carries a corrosion protection in terms of a diffusion protection layer, wherein additionally on the side 10 facing the main chamber combustion chamber 6 in the region of the section projecting into the main chamber combustion chamber
    6, a heat insulation layer is applied to the corrosion protection layer, as a result of which the
    20185706 prh 29 -08- 2018 susceptibility to wear of the prechamber arrangement 1 can be further reduced.
    For producing the prechamber arrangement 1 according to the invention, nozzle section 4 and body section 3 are produced, wherein during the production, body section 3 and nozzle section 4 are directly and non-detachably joined to one another so that no separate fastening means for fastening the nozzle section 4 to the body section 3 is required.
    The nozzle section 4 is preferentially produced by way of a qenerative production method. Durinq the qenerative production method, a powder of a material is kept ready for the nozzle section 4, wherein the nozzle section 4 is qradually build-up from this powder, for example throuqh selective laser sinterinq, selective laser meltinq, electron beam meltinq, laser deposition weldinq, binder jettinq, 3D printing or the like. As powdery material for the nozzle section 4, powder mixtures of different materials are preferentially employed, for example mixtures of a metal powder and a metal alloy powder or mixtures of a metal powder and a non-metallic, in particular ceramic powder.
    The metallic powder can for example comprise iron and/or nickel and/or cobalt and/or titanium and/or copper and/or chromium and/or zirconium and/or yttrium and/or boron.
    The non-metallic powders can be oxides, nitrides, carbides, silicides and/or borides.
    20185706 prh 29 -08- 2018
    The body section 3 can be produced via a compound casting method as compound casting about the nozzle section 4, namely in such a manner that the body section 3 partly encloses the nozzle section 4.
    Alternatively, nozzle section 4 and body section 3 can both be produced via a generative production method, namely via suitably matched powdery materials, wherein the body section 3 partly encloses the nozzle section 4 .
    For forming the corrosion protection and/or heat insulation protection, at least the body section 3 or the body section 3 and/or the nozzle section 4 is/are surface treated, in particular as already described above, via a diffusion method.
    The prechamber arrangement 1 according to the invention is non-susceptible to wear. A longer service life and thus lower operating and maintenance costs can be realised.
    Preferentially, the prechamber arrangement 1 is a prechamber arrangement for a gas engine, wherein in the prechamber combustion chamber 5 an ignition device is arranged.
    20185706 prh 29 -08- 2018
    List of reference numbers
    Prechamber arrangement
    Cylinder head
    Body section
    Nozzle section
    Prechamber combustion chamber
    Main chamber combustion chamber
    Nozzle orifice
    Section
    Section
    Surface
    Surface
    Surface
    权利要求:
    Claims (12)
    [1] Claims
    1. A prechamber arrangement (1) for a cylinder of an internal combustion engine, with a body section (3) for fastening the prechamber arrangement (1) to a cylinder head (2) of a cylinder of the internal combustion engine, with a nozzle section (4), which is joined to the body section (3) and comprises nozzle orifices (7), via which a prechamber combustion chamber (5) of the prechamber arrangement (1) of the cylinder defined by the body section (3) and the nozzle section (4) is connected to a main chamber combustion chamber (6) of the cylinder, characterized in that
    20185706 prh 29 -08- 2018 the body section (3), which is non-detachably joined to the nozzle section (4), projects beyond the cylinder head (2) into the main chamber combustion chamber (6), so that the prechamber combustion chamber (5) and the main chamber combustion chamber (6) in the region of a section (8) of the prechamber arrangement (1) projecting into the main chamber combustion chamber (6) are separated on the one hand by the body section (3) and on the other hand by the nozzle section (4).
    [2] 2. The prechamber arrangement according to Claim 1, characterized in that the body section (3)
    consists of a metallic material and the nozzle section ( :4) of another material that is highly resistant to the wear load, such as for example
    more corrosion-resistant metallic material or a ceramic material.
    [3] 3. The prechamber arrangement according to Claim 1 or
    2, characterized in that on a side (10) facing the main chamber combustion chamber (6) of the section (8) of the prechamber arrangement (1) projecting into the main chamber combustion chamber (6), the prechamber arrangement (1) in the region of the nozzle orifices (7) is defined or delimited by the nozzle section (4) and between adjacent nozzle orifices (7) as well as between the nozzle orifices (7) and the cylinder head (2) by the body section (3).
    [4] 4. The prechamber arrangement according to Claim 3, characterized in that the body section (3) on the side (10) facing the main chamber combustion chamber (6), in the region of the section (8) of the prechamber arrangement (1) projecting into the main chamber combustion chamber (6), comprises a corrosion protection and/or heat insulation protection.
    [5] 5.
    The prechamber arrangement according to any one of the Claims 1 to
    4, characterized in that on a side
    20185706 prh 29 -08- 2018 of the section (1) projecting prechamber combustion into the exclusively defined chamber (5) arrangement the main chamber combustion prechamber arrangement is or delimited by the nozzle
    [6] 6. The prechamber arrangement according to any one of the Claims 1 to 5, characterized in that the
    20185706 prh 29 -08- 2018 prechamber arrangement (1) on a side (11) facing the prechamber combustion chamber (5), in the region of a section (9) of the prechamber arrangement (1) projecting into the main chamber combustion chamber (6) is defined or delimited on the one hand in sections by the body section (3) and on the other hand in sections by the nozzle section (4).
    [7] 7. The prechamber arrangement according to Claim 6, characterized in that the body section (3) and/or the nozzle section (4) on the side (11) facing the prechamber combustion chamber (5) , in the region of the section (9) of the prechamber arrangement (1) not projecting into the main chamber combustion chamber (6) comprises a corrosion protection and/or heat insulation protection.
    [8] 8. The prechamber arrangement according to Claim 4 or 7, characterized in that the corrosion protection and/or the heat insulation protection is formed as diffusion protection layers.
    [9] 9. A method for producing a prechamber arrangement according to any one of the Claims 1 to 8, with the following steps:
    producing the nozzle section (4), producing the body section (3) subject to nondetachable joining of nozzle section (4) and body section (3).
    [10] 10. The method according to Claim 9, characterized in that the nozzle section (4) and the body section (3) are each produced via a generative production method.
    [11] 11. The method according to Claim 9, characterized in that the nozzle section (4) is produced via a generative production method and in that the body section (3) is produced as a composite casting about the nozzle section (4).
    [12] 12. The method according to any one of the Claims 9 to
    11, characterized in that the body section (3), for forming a corrosion protection and/or a heat insulation protection, is surface-treated in particular via a diffusion method.
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    同族专利:
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    DE102017215493A1|2019-03-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2914041A|1956-06-20|1959-11-24|Nordberg Manufacturing Co|High compression spark ignited gas engine and method|
    DE3241697A1|1982-11-11|1984-05-17|Robert Bosch Gmbh, 7000 Stuttgart|IGNITION DEVICE WITH A IGNITION CHAMBER AND IGNITION ELECTRODES|
    LU86129A1|1985-10-21|1987-06-02|Chimicasa Gmbh|METHOD FOR PROCESSING FOOD AND PREPARATION FOR PROTECTING MICROORGANISMS USED FOR FOOD PROCESSING|
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    FI121759B|2007-11-09|2011-03-31|Waertsilae Finland Oy|Internal combustion engine pre-chamber arrangement|
    US9217360B2|2011-12-01|2015-12-22|Cummins Intellectual Property, Inc.|Prechamber device for internal combustion engine|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017215493.4A|DE102017215493A1|2017-09-04|2017-09-04|Meran seemed fine|
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