• 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:
    Antechamber gas valve (5) comprising a valve body (24), at least one valve spring (15) and at least one valve needle (14), wherein the valve body (24) has a lower, in the operating state gasbeaufschlagten space (21) and an upper space (22) which the valve spring (15) is arranged, wherein the upper space (22) via a plug (17) is closed.
    公开号:AT516621A4
    申请号:T50162/2015
    申请日:2015-02-27
    公开日:2016-07-15
    发明作者:Raphael Jacob
    申请人:Ge Jenbacher Gmbh & Co Og；
    IPC主号:
    专利说明:

    The invention relates to a pre-chamber gas valve having the features of the preamble of claim 1 and a method for producing such a pre-chamber gas valve.
    From a certain bore (in about 150 mm) (gas) internal combustion engines are equipped with a prechamber for ignition amplification. An ignition source projecting into the pre-chamber ignites the mixture present there, which is relatively rich when the prechamber is purged, whereby ignition flares from the prechamber enter a main combustion chamber and ignite the mixture present there.
    There are various concepts for supplying fuel to prechambers. In non-purged prechambers, mixture is forced out of the main combustion chamber into the prechamber in the compression stroke.
    In the case of rinsed prechambers, it is also possible to supply the prechamber with additional fuel. This separate fuel supply is via a pre-chamber gas valve. This can be arranged in the cylinder head directly or in a spark plug sleeve.
    The generic EP0480545 (YANMAR DIESEL ENGINE CO) shows a pre-chamber gas valve, which is supplied via a channel (18) with propellant gas.
    The construction consists of several concentric sleeve-shaped components, which are inserted into each other. The gas guide is partially via deep holes in the walls of the sleeve-shaped components.
    Object of the present invention is to provide a comparison with the prior art improved pre-chamber gas valve or a method for producing a pre-chamber gas valve.
    This object is achieved by a pre-chamber gas valve having the features of claim 1 and a method of manufacturing according to claim 9 or 10. Advantageous embodiments are specified in the dependent claims.
    According to the invention, it is provided that a space formed in the valve body, in which a valve spring is arranged, is closed by a plug. This represents a significant design improvement over the prior art. Prior art known from the prior art pre-chamber gas valves are closed by sleeves, which requires a complicated production of paragraphs for centering.
    It can be provided that for clamping the valve needle with respect to a valve seat, a cap is provided, which is insertable into the valve body of the pre-chamber gas valve and which is connected to the valve needle.
    Preferably, it can be provided that the cap in the opened state of the prechamber gas valve rests against the valve body in abutment. This has the particular advantage that the movement of the valve needle has a well-defined end position. The stopper may be preferably formed such that the upper space of the prechamber gas valve has at least two portions of different diameter, the cap being movable in the larger diameter portion and upon reaching the opening position of the prechamber gas valve on the between the larger diameter portion and the portion shoulder formed smaller diameter rests. In the smaller diameter section, the valve spring is conveniently housed. Thus, the valve spring receives a guide in the smaller diameter section.
    This also ensures a particularly compact design and good manufacturability. For the durability of the components (preferably at least the housing) they can be hardened. If the housing were in two parts, hardening would make welding difficult. Any other joining technique is technically difficult. The connection should be tight and firm. A one-piece design of the housing is therefore preferred.
    It can preferably be provided that the valve body is integrally formed.
    This variant is particularly advantageous because the pre-chamber gas valve thus formed is particularly robust. Also omitted in the production consuming assembly steps.
    It may be provided that the guidance of the valve needle is effected by the valve body, which simultaneously forms the housing of the prechamber gas valve. Thus, a particularly advantageous component integration is realized. The valve body thus performs several functions.
    It can be provided that a space is provided between the seat of the valve disk of the prechamber gas valve and the mouth of the prechamber gas valve into an antechamber or between the seat of the valve disk of the prechamber gas valve and the mouth of the prechamber gas valve. It is preferably provided that this space has a largely pear-shaped, tapering towards the antechamber shape.
    Protection is also desired for methods of making a prechamber gas valve.
    Accordingly, it is provided that for closing the upper space a plug is connected by means of a press connection or a screw connection with the valve body.
    Alternatively or additionally, it is provided that a valve spanning the valve spring with respect to the valve seat cap is connected to the valve needle of the pre-chamber gas valve via a beam welding.
    The invention is explained in more detail by the figures. Showing:
    Fig. 1a to 1c, a spark plug sleeve
    2a to 2c, a spark plug sleeve
    3a to 3c, a spark plug sleeve
    Fig. 4a to 4e details of gas supply concept
    Fig. 5a, 5b a pre-chamber gas valve and a variant of this.
    FIGS. 1a to 1c show a spark plug sleeve 4 according to a first example in three views. The spark plug sleeve 4 is inserted in the installed state in a cylinder head 2.
    Thus, Fig. 1a shows a longitudinal section through the cavity 7, which receives a spark plug 6 (not shown) and a pre-chamber gas valve 5. The cavity 7 is formed in a spark plug sleeve 4 in this example.
    On the one hand, the cavity 7 comprises a shaft, which is concentric about the axis of symmetry S1, of cylinder sections for accommodating a spark plug 6.
    The cavity 7 further has a bore 10 with symmetry axis S2 for receiving a prechamber gas valve 5.
    From the prechamber gas valve 5, a channel 8 leads to the prechamber 3. The prechamber 3 consists on the one hand of the actual cavity, so the cavity in which the ignition of mixture takes place. Of course, the pre-chamber 3 is also a physical component. In the present embodiment, the pre-chamber 3 is designed as a separate component of the spark plug sleeve 4 and is connected to the spark plug sleeve 4, for example, pressed.
    The sake of clarity not shown spark plug 6 is introduced via the concentric to the axis of symmetry S1 shaft in the spark plug sleeve 4 so that it is flush with the prechamber 3 and their electrodes protrude into the prechamber 3. The pre-chamber 3 is enriched by the pre-chamber gas valve 5 via the channel 8 with fuel gas. After ignition in the pre-chamber 3 ignited mixture occurs via the overflow holes 9 in the main combustion chamber (not shown).
    Fig. 1 b shows a plan view of the representation of Fig. 1 a. Evident are lying within the cavity 7 parallel cylindrical shafts for receiving a spark plug 6 and a Vorkammergasventils 5. The spark plug 6 is as explained with reference to FIG. 1a not shown. Recognize the pre-chamber gas valve 5 is an octagon, with which the pre-chamber gas valve 5 is screwed into the spark plug sleeve 4. In the present example, there is a largest bore diameter D1 of the cavity 7, which in a plan view circumscribes the bores for accommodating the spark plug 6 and the prechamber gas valve 5. In other words, in this example, there is a common shaft for spark plug 6 and prechamber gas valve 5.
    The center line of the largest hole with diameter D1 lies between the axes of symmetry S1 and S2. The common shaft has advantages in the assembly of spark plug 6 and pre-chamber gas valve 5, but weakens spark plug sleeve 4, since only a small wall thickness remains.
    Fig. 1c shows a perspective view of the spark plug sleeve 4 of this example.
    Figures 2a to 2c show different views of a spark plug sleeve 4 according to another example. Whereas in the example according to FIGS. 1a to 1c the cavity 7 has a cylindrical section which, at its largest diameter, circumscribes both the bore for accommodating the spark plug and the bore for receiving the prechamber gas valve 5, in the present example the largest diameter of the cavity comprises 7, the bore of the spark plug sleeve 4 is no longer entirely. Rather, the bore 10 of the prechamber gas valve 5 penetrates the spark plug bore 11 in its upper section with the largest diameter. This becomes particularly clear in the illustrations of Figure 2b and Figure 2c. In a plan view (Figure 2b) so overlap the bore 10 for receiving the Vorkammergasventils 5 and the bore for receiving the spark plug. 6
    Figures 3a to 3c show another example. Here, too, the bore for receiving the pre-chamber gas valve 5 is not circumscribed by a largest diameter of the cavity 7. In other words, the holes for receiving a spark plug 6 and for receiving the prechamber gas valve 5 also penetrate here. In comparison to the example according to FIGS. 2a to 2c, the contour of the cavity 7 is changed here. The contour of the cavity 7 is designed here such that the cylindrical bores for receiving the spark plug 6 and the prechamber gas valve 5 merge into one another. In other words, the sharp transitions of the example of Figures 2a to 2c are here replaced by a smooth radius in the transition of the two holes.
    FIG. 4 a shows a section through a spark plug sleeve 4, wherein the cut has been laid in such a way that the gas supply to the pre-chamber gas valve 5 becomes clear. The cut is sketched in Fig. 4b. Evident is the gas supply channel 12, as it opens into the bore 10 which carries the pre-chamber gas valve 5. The bore 10 forms, together with the pre-chamber gas valve 5, an annular channel 13 into which the gas supply channel 12 opens. From the annular channel 13 formed by bore 10 and pre-chamber gas valve 5, the incoming gas is passed evenly into the pre-chamber gas valve 5.
    4c shows a longitudinal section through the spark plug sleeve 4. The cut is shown in FIG. 4d. As can be seen in FIG. 4c, the cutting guide is chosen here such that the part of the gas supply channel 12 extending parallel to the axis of symmetry S1 can also be seen.
    4e shows in a perspective, isometric view the arrangement of pre-chamber gas valve 5 and its gas supply. Gas is supplied through the horizontal and vertical sections of the gas supply channel 12.
    Fig. 5a shows a sectional view of the pre-chamber gas valve 5. Well recognizable is the annular channel 13 which is formed between the wall 10 of the cavity and the outer contour of the pre-chamber gas valve 5. The wall 10 may be formed either by the cylinder head 2 itself or by a spark plug sleeve 4 inserted into the cylinder head 2.
    The valve needle 14 is clamped by the spring 15 against its seat. The cap 16 surrounds the spring 15 and is connected to the valve needle 14. The connection can preferably take place via a beam welding.
    In the present embodiment, the particularly preferred case is shown that the cap 16 abuts against the valve body 24 in the open state of the pre-chamber gas valve 5 to stop. This has the particular advantage that the movement of the valve needle 14 has a well-defined end position. The upper space 22 of the pre-chamber gas valve 5 is divided into two cylindrical sections of different diameters. In the present figure on the right, ie in the direction of plug 17, the cap 17 is movable in the direction of the longitudinal axis of the prechamber gas valve 5.
    Upon reaching the opening position of the prechamber gas valve 5, the cap 17 is abutment with the shoulder formed between the larger diameter portion and the smaller diameter portion in space 22. In the portion of the smaller diameter space 22, the valve spring 15 is housed.
    The plug 17 closes the space 22 and seals the prechamber gas valve 5 upwards. Carried out here as a press fit, the plug 17 can also be connected via a screw connection with the valve body 24.
    Immediately before the valve seat, a further space 21 is formed. The space 21 is supplied from the channels 20 outgoing from the annular gap 13 with gas.
    Between the seat of the valve disk of Vorkammergasventils 5 and the junction of Vorkammergasventils 5 in an antechamber 3 and between the seat of the valve disk of Vorkammergasventils 5 and the junction of Vorkammergasventils 5 in a channel 8 is another space 23. In the present figure, cylindrical , the space 23 may take other forms. It may be pear-shaped, for example.
    The seal of the annular channel 13 with respect to the cavity 7 takes place radially over the O-rings 18. These are arranged in formed by the projections 19, annular receptacles. The sealing concept of the pre-chamber gas valve 5 shown here thus provides that the seal of the pre-chamber gas valve 5 radially, d. H. takes place over the outer surface of the prechamber gas valve 5.
    The the annular channel 13 facing edge of the projection 19 limits the annular channel 13 with. The projection 19 thus has on the one hand the function of creating a receptacle for a sealant, realized here as an O-ring, on the other hand, the projection 19 limits the annular channel 13 with.
    FIG. 5b shows a variant of FIG. 5a, in which the space 23 has a largely pear-shaped shape that tapers toward the prechamber 3. This embodiment is particularly advantageous in terms of flow.
    List of reference numbers used: 1 Internal combustion engine 2 Cylinder head 3 Prechamber 4 Spark plug sleeve 5 Prechamber gas valve 6 Spark plug 7 Cavity 8 Channel 9 Overflow bore 10 Wall of cavity 7 11 Spark plug bore 12 Gas supply channel 13 Ring channel 14 Valve needle 15 Valve spring 16 Cap 17 Plug 18 O-ring 19 Tab 20 Gas duct 21 Lower Cavity of Pre-chamber Gas Valve 22 Upper Cavity of Pre-chamber Gas Valve 23 Space 24 Valve Body 51 Symmetry Axis 52 Symmetry Axis
    Innsbruck, on February 27, 2015
    权利要求:
    Claims (10)
    [1]
    claims
    A pre-chamber gas valve (5) comprising a valve body (24), at least one valve spring (15) and at least one valve needle (14), the valve body (24) having a lower, gas-loaded space (21) and an upper space (22). in which the valve spring (15) is arranged, characterized in that the upper space (22) is closed by a plug (17).
    [2]
    2. pre-chamber gas valve (5) according to claim 1, characterized in that for clamping the valve needle (14) relative to a valve seat, a cap (16) is provided, which in the valve body (24) of the pre-chamber gas valve (5) is insertable and which with the Valve needle (14) is connected.
    [3]
    3. pre-chamber gas valve (5) according to claim 2, characterized in that the cap (16) in the opened state of the pre-chamber gas valve (5) against the valve body (24) abuts.
    [4]
    4. pre-chamber gas valve (5) according to at least one of the preceding claims, characterized in that the valve body (24) is integrally formed.
    [5]
    5. pre-chamber gas valve (5) according to claim 4, characterized in that the guide of the valve needle (14) through the valve body (24) itself takes place, which at the same time also forms the housing of the pre-chamber gas valve (5).
    [6]
    6. pre-chamber gas valve (5) according to at least one of the preceding claims, characterized in that between the seat of the valve disk of Vorkammergasventils (5) and the mouth of the pre-chamber gas valve (5) in an antechamber (3) or between the seat of the valve disk of Vorkammergasventils (5) and the mouth of the pre-chamber gas valve (5) in a channel (8) a space (23) is provided.
    [7]
    7. pre-chamber gas valve (5) according to claim 6, characterized in that the space (23) has a largely pear-shaped, the antechamber (3) towards tapered shape.
    [8]
    8. pre-chamber gas valve (5) according to at least one of the preceding claims, characterized in that the pre-chamber gas valve (5) on its outer contour at least one projection (19) whose one annular channel (13) facing edge mitbegrenzt the annular channel (13) and at the another flank a sealing means for sealing the Vorkammergasventils (5) against a wall (10) of the Vorkammergasventil (5) receiving cavity (7) is present.
    [9]
    9. A method for producing a Vorkammergasventils (5), preferably a Vorkammergasventils (5) according to at least one of the preceding claims, comprising a valve body (24), wherein the valve body (24) has a lower, gas-loaded in the operating state space (21) and an upper Room (22) in which a valve spring (15) is arranged, characterized in that for closing the upper space (22) a plug (17) by means of a press connection or a screw connection with the valve body (24) is connected.
    [10]
    10. A method for producing a pre-chamber gas valve (5) comprising a valve spring (15) for clamping a valve needle (14) relative to a valve seat, preferably a Vorkammergasventils (5) according to at least one of claims 1 to 8, characterized in that a valve spring ( 15) relative to the valve seat spanning cap (16) with the valve needle (14) of the pre-chamber gas valve (5) is connected via a beam welding. Innsbruck, on February 27, 2015
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE102019123537A1|2019-09-03|2021-03-04|Volkswagen Ag|Fuel supply system for active purging of an antechamber of an internal combustion engine operated by a gasoline engine with fuel vapor or a fuel vapor / air mixture by means of a fuel vaporizer upstream of the antechamber|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50162/2015A|AT516621B1|2015-02-27|2015-02-27|Vorkammergasventil|ATA50162/2015A| AT516621B1|2015-02-27|2015-02-27|Vorkammergasventil|
    JP2016031915A| JP2016160934A|2015-02-27|2016-02-23|Pre-chamber gas valve|
    KR1020160021377A| KR20160105316A|2015-02-27|2016-02-23|Pre-chamber gas valve|
    BR102016003825A| BR102016003825A2|2015-02-27|2016-02-23|anteroom gas valve|
    AU2016201132A| AU2016201132A1|2015-02-27|2016-02-23|Pre-chamber gas valve|
    US15/050,820| US10184386B2|2015-02-27|2016-02-23|Pre-chamber gas valve|
    CN201610305035.5A| CN106014695B|2015-02-27|2016-02-23|Prechamber valve|
    EP16156820.9A| EP3061961B1|2015-02-27|2016-02-23|Front chamber valve|
    CA2921629A| CA2921629C|2015-02-27|2016-02-23|Pre-chamber gas valve|
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