• 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:
    Internal combustion engine, comprising: - a cylinder head (6) having a cylinder head bottom (5), a cylinder wall (7) and a piston (8) movable along a cylinder axis (Z), which has a piston head (9), wherein between cylinder head base (5) , Cylinder wall (7) and piston head (9) a main combustion chamber (4) is formed, - an antechamber (1) inserted into a bore (10) of the cylinder head (6) and relative to the bore (10) in the circumferential direction of the bore ( 10) is fixed, wherein the axis (B) of the bore (10) is at least substantially parallel to the cylinder axis (Z) and wherein in the antechamber (1) a Vorkammerbrennraum (3) is formed, - at least one wreath of transfer openings ( 2,2 '), which connect the pre-chamber combustion chamber (3) with the main combustion chamber (4), wherein in each case the angle (a, a') which encloses the transfer opening (2,2 ') with the cylinder axis (Z), for at least two crossing openings (2,2 ') of the at least one ring untersc is different.
    公开号:AT510869A1
    申请号:T2143/2010
    申请日:2010-12-27
    公开日:2012-07-15
    发明作者:
    申请人:Ge Jenbacher Gmbh & Co Og；
    IPC主号:
    专利说明:

    1
    The present invention relates to an internal combustion engine comprising: a cylinder head having a cylinder head, a cylinder wall and a piston movable along a cylinder axis having a piston head, wherein between the cylinder head bottom, cylinder wall and piston head a main combustion chamber is formed, an antechamber, which in a bore the cylinder head is inserted and fixed relative to the bore in the circumferential direction of the bore, wherein the axis of the bore is at least substantially parallel to the cylinder axis and wherein in the prechamber a Vorkammerbrennraum is formed, at least one ring of transfer openings, which connect the Vorkammerbrennraum with the main combustion chamber ,
    Such so-called. Pre-chamber ignited internal combustion engines are well known. Ignition torches emerging from the transfer openings serve to reliably ignite a mixture located in the main combustion chamber.
    In many pre-chambers currently known, the exact installation position can not be specified, since the prechambers are screwed in and you can not tighten the exact angular position in the circumferential direction relative to the bore in the cylinder head via a thread. However, there are already known generic internal combustion engines, in which the prechamber is fixed relative to the bore in the cylinder head in the circumferential direction of the bore (see, for example, DE 37 09 976 A1).
    Generic internal combustion engines have the problem that the ignition torches do not optimally detect the volume of the main combustion chamber and thus no rapid combustion is ensured. If you try to size the ignition torches larger, it also leads to a strong thermal load on the cylinder head floor and the piston crown.
    The object of the invention is to develop a generic internal combustion engine such that a rapid combustion is ensured without burdening the cylinder head bottom or the piston head thermally excessive.
    This object is achieved by an internal combustion engine with the features of claim 1. 68244-36 / fr
    Due to the fact that the individual passage openings do not each enclose the same angle with the cylinder axis, it is possible to choose the angle which each transfer opening encloses in each case with the cylinder axis for each transfer opening in such a way that during operation of the internal combustion engine the ignition torches emerging from the transfer openings Cylinder head floor and the piston crown have a maximum distance. On the one hand, this causes the thermal stress on the cylinder head bottom and piston crown to be minimized. On the other hand, such a maximum volume of the main combustion chamber is detected, which ensures rapid combustion.
    In addition, the geometry of the transfer openings (eg diameter and shape) can be varied. As a result, the size and the pulse of the respective Zündfackel can be adapted to local requirements.
    A prerequisite for this measure is, of course, that the prechamber is fixed in its circumferential direction in the bore of the cylinder head (that is, has a predetermined angular position), since otherwise it is not possible to match the angle of the transfer openings to the respective geometric condition of the main combustion chamber. Particularly preferably, the internal combustion engine is designed as a stationary gas engine, in particular, which can be coupled to a generator for power generation.
    An embodiment of the invention will be explained with reference to the figures and the following description of the figures. Showing:
    Fig. 1 Fig.2 Fig. 3 Fig. 4a, 4b Fig. 5a, 5b
    Schematically a section of an internal combustion engine according to the invention in the invention relevant part, a plan view of the cylinder head floor of the engine shown in Fig. 1, a Schnittdarstelfung along sections A and B of Fig. 2, a more realistic plan view of a cylinder head floor of an internal combustion engine according to the invention and a detailed illustration thereto and a sectional view with the line D - D of Fig. 4a and a detailed representation of the (inventive) pre-chamber with transfer openings. In Fig. 1, a main combustion chamber 4 of an internal combustion engine according to the invention can be seen, which in reality, of course, usually has more than one main combustion chamber 4. The main combustion chamber 4 is formed by the piston head 9 of a piston 8, the third
    Visible is further an antechamber 1, in which a Vorkammerbrennraum 3 is formed, which via a channel 12 with transfer openings 2,2 '(in Fig. 1, only one transfer opening 2 is shown) with the Main combustion chamber 4 is connected.
    As is apparent from Fig. 3, the distance between the cylinder head bottom 5 and the piston head 9 in the main combustion chamber is not the same everywhere. Another reason for a varying distance may be the design of the piston, which may differ from a rotationally symmetric shape (z. B. heart piston and various well piston).
    According to the invention, it is now provided that the transfer openings 2, 2 'do not all enclose the same angle α with the cylinder axis Z (see FIG. 3). The angle a, a 'for each crossing opening 2, 2' is chosen such that the distance between the ignition torches emerging from the transfer openings 2, 2 during operation of the internal combustion engine relative to the cylinder head bottom 5 or the piston head 9 is maximum. This takes into account that in the embodiment shown, the distance in the region of the valve webs is greatest, since the valve webs are reset and the valves are flush.
    For reasons of clarity, the angles 90 ° minus α and 90 ° minus α 'are always plotted in the figures, instead of α and α' respectively.
    For a better understanding of the schematic representations of FIGS. 1 to 3, FIGS. 4 and 5 show a more realistic view of an exemplary embodiment according to the invention, wherein it can be seen in this exemplary embodiment that a ring of altogether eight transfer openings 2, 2 'is provided, wherein in each case Circumferentially consecutive transfer openings 2,2 'have a different angle α, α'. Of course, it would also be possible to arrange not only a wreath at transfer openings 2,2 ', but another such a wreath, which is probably mainly in very large main burn 4 could be useful.
    Of interest is in Fig. 5a nor the representation of an example of how the prechamber 1 can be fixed in the circumferential direction of the bore 10, namely in this embodiment by positioning pins 11. Alternatively, it could also be provided to clamp the antechamber 1 in the bore 10, to weld or otherwise apply a suitable fixing method that allows mounting with a predetermined angular position. 4
    Fig. 5b shows the projecting into the main combustion chamber part of the pre-chamber according to the invention, wherein two crossing openings 2, 2 'with different angles ot, a! are recognizable.
    In Fig. 1, an asymmetrical prechamber 1 is shown, while the remaining figures show symmetrical prechambers 1. The invention is applicable to both types of prechambers 1.
    Innsbruck, December 23, 2010
    权利要求:
    Claims (2)
    [1]
    An internal combustion engine, comprising: - a cylinder head (6) having a cylinder head bottom (5), a cylinder wall (7) and a piston (8) movable along a cylinder axis (Z), which has a piston head (9), between Cylinder head bottom (5), the cylinder wall (7) and the piston head (9) a main combustion chamber (4) is formed, an antechamber (1) inserted into a bore (10) of the cylinder head (6) and relative to the bore (10) in the circumferential direction the bore (10) is fixed, wherein the axis (B) of the bore (10) is at least substantially parallel to the cylinder axis (Z) and wherein in the prechamber (1) a prechamber combustion chamber (3) is formed, - at least one ring from transfer openings (2, 2 '), which connect the prechamber combustion chamber (3) to the main combustion chamber (4), characterized in that in each case the angle (a, a') which the transfer opening (2, 2 ') communicates with the cylinder axis ( Z), for at least two transmissions tsöffnungen (2,2 ') of the at least one ring is different.
    [2]
    2. Internal combustion engine according to claim 1, characterized in that in each case the angle (a, a '), which encloses the transfer opening (2,2') with the cylinder axis (Z), for each transfer opening (2,2 ') is selected in that, during operation of the internal combustion engine, ignition torches emerging from the transfer openings (2, 2 ') have a maximum distance from the cylinder head bottom (5) and the piston head (9). Innsbruck, December 23, 2010
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    同族专利:
    公开号 | 公开日
    AT510869B1|2013-04-15|
    US20130276745A1|2013-10-24|
    US8726878B2|2014-05-20|
    DE112011104599B4|2017-02-09|
    DE112011104599A5|2014-01-02|
    WO2012088551A1|2012-07-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0630433U|1992-09-18|1994-04-22|三菱重工業株式会社|Gas engine torch ignition device|
    JP2001003753A|1999-06-21|2001-01-09|Mitsubishi Heavy Ind Ltd|Auxiliary chamber system of gas engine|
    JP2009270540A|2008-05-09|2009-11-19|Osaka Gas Co Ltd|Engine and ignition plug for engine|
    DE700327C|1937-02-19|1940-12-18|Anton Schlueter|Air-compressing internal combustion engine with self-ignition|
    DE2537001C2|1975-08-20|1980-09-04|Daimler-Benz Ag, 7000 Stuttgart|
    DE3148296A1|1981-01-17|1982-09-02|Robert Bosch Gmbh, 7000 Stuttgart|COMBINED INTERNAL COMBUSTION ENGINE WITH AT LEAST ONE MAIN COMBUSTION CHAMBER AND ITS COMBINED COMBUSTION CHAMBER|
    US4646695A|1985-12-09|1987-03-03|Oak Ridge Systems, Inc.|Device for improving the ignition of fuel-air mixtures in internal combustion engines|
    DE3709967A1|1987-03-26|1988-10-06|Metallgesellschaft Ag|METHOD FOR RECOVERING SMALL BATTERIES|
    DE3709976A1|1987-03-30|1988-10-20|Dieter Dr Ing Kuhnert|METHOD AND SPARK PLUG FOR THE IGNITION OF VERY LOW FUEL-AIR MIXTURES, ESPECIALLY FOR GAS ENGINES|
    US5067458A|1989-03-27|1991-11-26|Caterpillar Inc.|Fuel combustion system and method of operation for an otto-cycle internal combustion engine|
    US5105780A|1990-08-08|1992-04-21|Caterpillar Inc.|Ignition assisting device for internal combustion engines|
    JPH0630433A|1992-07-08|1994-02-04|Matsushita Electric Ind Co Ltd|Luminance signal/chrominance signal separating device|
    US6854439B2|2002-03-02|2005-02-15|Jose Francisco Regueiro|Prechamber combustion system|
    EP1403482B1|2002-09-27|2010-04-21|Kubota Corporation|Swirl chamber used in association with a combustion chamber for diesel engines|
    DE102008018482B4|2008-04-11|2013-11-07|Man Diesel & Turbo Se|Internal combustion engine|
    FI122501B|2008-04-25|2012-02-29|Waertsilae Finland Oy|Internal combustion engine pre-chamber unit|
    AT507156B1|2008-07-22|2011-12-15|Ge Jenbacher Gmbh & Co Ohg|DEVICE FOR IGNITING A FUEL / AIR MIXTURE|
    DE102009002167A1|2009-04-03|2010-10-14|Robert Bosch Gmbh|Laser spark plug and pre-chamber module for this|
    DE102009016461A1|2009-04-04|2010-10-07|Man Diesel Se|Ignition arrangement for gas engine utilized e.g., as marine engine, has ignition release device comprising ignition spark-production device that is arranged in pre-chamber for igniting ignition gas jet by ignition spark|EP2977582B1|2014-07-22|2018-03-28|Caterpillar Energy Solutions GmbH|Ignition device with pre-combustion chamber|
    US9556844B2|2015-02-13|2017-01-31|Caterpillar Inc.|Nozzle with contoured orifice surface and method of making same|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2143/2010A|AT510869B1|2010-12-27|2010-12-27|Internal combustion engine|ATA2143/2010A| AT510869B1|2010-12-27|2010-12-27|Internal combustion engine|
    DE112011104599.9T| DE112011104599B4|2010-12-27|2011-11-10|Internal combustion engine|
    PCT/AT2011/000451| WO2012088551A1|2010-12-27|2011-11-10|Internal combustion engine|
    US13/920,482| US8726878B2|2010-12-27|2013-06-18|Internal combustion engine|
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