• 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 (1) with liquid cooling with at least one cylinder block (40) and at least one cylinder head (10) for at least two cylinders (41), wherein the internal combustion engine (1) has a first side (4) and an opposite second side (5) one through at least two cylinder axes (46) of the cylinder (41) spanned longitudinal central plane (27) and in at least one web region (12) between two adjacent cylinders (41) in the region of a normal to the longitudinal center plane arranged engine transverse plane (3) in the cylinder head (10) at least a second cooling channel (13) which connects the first (4) and the second side (5) and has at least one first opening (31) on the first side (4) and at least one second opening (32) on the second side (5) is. The object of the invention is to cool the land area (12) as space-saving as possible. This is achieved in that the second cooling channel (13) between the first (31) and the second opening (32) is formed as a closed cross-section in the cylinder head and of a cylinder head sealing plane (11) of the cylinder head (10) at least in the region of the longitudinal center plane (27) has a sealing plane spacing (a) in the direction of a cylinder axis (46).
    公开号:AT518537A4
    申请号:T50528/2016
    申请日:2016-06-09
    公开日:2017-11-15
    发明作者:Dipl Ing Knollmayr Christof
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    The invention relates to an internal combustion engine with liquid cooling with at least one cylinder block and at least one cylinder head for at least two cylinders, wherein the internal combustion engine has a first side and an opposite second side of a longitudinal center plane spanned by at least two cylinder axes of the cylinder and in at least one web region between two adjacent ones Cylinders in the region of a normal to the longitudinal center plane arranged engine transverse plane in the cylinder head at least one first and the second side connecting second cooling channel is arranged with at least a first opening on the first side and at least one second opening on the second side.
    In order to achieve sufficient cooling of the engine cooling channels are provided in the engine block. Since, however, in the area of the cylinder head between two adjacent cylinders, a problem may arise in the removal of heat in high-performance engines, sufficient cooling must also be ensured in the cylinder head.
    It is known to produce by Sägeschnitte from the cylinder head density level of cooling channels.
    Cylinder blocks with such cooling channels in the cylinder head are known from DE 10 2005 033 338 Al. In this case, however, the cooling channel is formed as a groove, ie as an open cross-sectional shape in the region of the cylinder head density level, and produced by sawing or milling. The disadvantage of this design is the space required for this cooling groove and the resulting elaborate cylinder head gasket. Furthermore, there is a greater engine length, which is disadvantageous in view of the increasing packaging problems in engine development nowadays.
    It is therefore an object of the invention to provide a way to engine cooling in the region of the cylinder head, which is compact and easy to do and does not increase the required engine length.
    This object is achieved in that the second cooling channel between the first and the second opening is formed as a closed cross-section in the cylinder head and a cylinder head density of the
    Cylinder head has a sealing plane distance at least in the region of the longitudinal center plane in the direction of a cylinder axis. As a result, cylinder head cooling in areas subjected to high thermal loads is made possible with which space can be saved in the area of the cylinder head gasket. This leads to a cylinder head cooling is achieved with the same engine length. In addition, it is therefore also possible to cool in areas which have a greater distance from the cylinder-head density plane, and thus positively influence the tendency of the engine to knock.
    Closed cross sections can be formed by drilling, casting or spark erosion into the cylinder head, for example.
    Another advantage arises when at least one of the two openings is arranged in the region of the fire deck, because this makes the production as simple as possible, since a hole can be made from the fire deck.
    An advantageous embodiment variant results if-measured in the region of the longitudinal center plane in the direction of the cylinder axis-the sealing plane distance between the second cooling channel and the cylinder head density plane corresponds to at least a smallest wall thickness of a fire deck of the cylinder head in the region of a combustion chamber. This ensures that the space savings can be really achieved without the wall thicknesses are too small to guarantee the mechanical strength.
    It is advantageous if the second cooling channel is at least partially performed increasing from an area of the fire deck of the cylinder head, preferably starting from the cylinder head density plane in the direction of the longitudinal center plane, since the engine length compared to a design without cooling channels in the cylinder head relatively little longer or the same length is.
    A simple production through holes is possible if the second cooling channel has at least a first sub-channel and at least a second sub-channel, the first sub-channel on the first side starting from the first opening in an area of the fire deck of the cylinder head, preferably from the cylinder head sealing plane in the direction the longitudinal center plane is rising and the second sub-channel runs on the second side, starting from the second opening in an area of the fire deck of the cylinder head, preferably from the cylinder head density plane in the direction of the longitudinal center plane.
    In order to ensure a flow connection between the sub-channels of a second cooling channel, it is advantageous if the first sub-channel and the second sub-channel-preferably in the region of the longitudinal center plane-are interconnected in the region of an intersection of the sub-channel axes, wherein preferably the intersection point is the sealing-plane distance from the cylinder-head-sealing plane ,
    The point of intersection can also be arranged outside the longitudinal center plane.
    For optimal cooling of the cylinder head can be provided in a preferred embodiment of the invention that the first part of the first opening to a substantially arranged on the second side of the second partial cooling chamber of the cylinder head is running and / or that the second sub-channel of the second opening to a substantially arranged on the first side of the first partial cooling chamber of the cylinder head is running running.
    In order to increase the cooling surface, it is advantageous if a third partial channel is provided between the first partial channel and the second partial channel, which is preferably parallel to the cylinder head density plane.
    A particularly advantageous embodiment variant results if the first opening opens into a first partial cooling jacket space of the cylinder block arranged on the first side and / or that the second opening opens into a second partial cooling jacket space of the cylinder block arranged on the second side.
    Under cooling jacket space understood here any spatial recess for cooling purposes in the cylinder block and under the refrigerator each spatial recess for the same purpose in the cylinder head. Common spaces in the cylinder head and cylinder block are separated by the cylinder head sealing plane in the cooling space and in the cooling jacket space.
    The advantage of any configuration of the second cooling channel is obtained when at least one second cooling channel is formed in the cylinder head by drilling or by molding in a casting or by spark erosion. When drilling the production is particularly simple and inexpensive, with spark erosion, the cooling channels can also have more complex cross-sectional shapes, such as a triangular shape, and by pouring virtually any cooling channel curves can be formed, for example by salt cores. In the following, the invention will be explained in more detail with reference to the embodiments shown in the non-limiting figures. Show it:
    Figure 1 shows the cylinder head according to the invention in an elevation from one longitudinal side.
    2 shows a first embodiment according to the invention of the cylinder head in a section along the line II-II in Fig. 1.
    Fig. 3 shows this first embodiment of the cylinder head in a section along the line III-III in Fig. 1;
    4 shows the first embodiment of the cylinder head in a section along the line IV-IV in Fig. 1.
    5 shows the first embodiment of the cylinder head in a section along the line V-V in Fig. 1.
    Fig. 6 shows the first embodiment of the cylinder head in a section along the line VI-VI in Fig. 1;
    7 shows a second embodiment according to the invention of the cylinder head in a section analogous to FIG. 6;
    8 shows a third embodiment of the cylinder head according to the invention in a section analogous to FIG. 6;
    FIG. 9 shows a fourth embodiment of the cylinder head according to the invention in a section analogous to FIG. 6; FIG.
    10 shows a fifth embodiment of the cylinder head according to the invention in a section analogous to FIG. 6; and
    11 shows the first embodiment of the cylinder head in a section according to the line XI-XI in FIG. 6.
    As shown in FIG. 1, an internal combustion engine 1 according to the invention has a cylinder head 10 with an associated cylinder head sealing plane 11. This cylinder head density plane 11 forms the bearing surface between the cylinder head 10 and a cylinder block 40. The fire deck 17 adjoins the cylinder head sealing plane 11 on the cylinder head side. In the illustrated embodiment, the cylinder block 40 has four cylinders 41, partially shown in FIG.
    In Fig. 2, the cylinder head 10 is shown in a first embodiment in a section along the line II-II in Fig. 1, with four each one of the cylinder 41 associated combustion chambers 2. A longitudinal center plane 27 is defined by at least two cylinder axes 46 (see FIG 11) the cylinder 41 is clamped; in the illustration in Fig. 2, the longitudinal center plane 27 extends vertically to the page level. The internal combustion engine 1 and thus also cylinder head 10 and cylinder block 40 have a first side 4 and a second side 5, which represent the opposite sides of the longitudinal center plane 27.
    Between each two combustion chambers 2, a web portion 12 can be seen. Starting from a first partial cooling jacket space 43 in the cylinder block 40, in the cylinder head 10, a first riser 14 of a first partial cooling space 15 of the cylinder head 10 is located in this web area 12 in the region of a normal transverse plane 27.
    Based on the longitudinal center plane 27 spanned by the cylinder axes 46 of the cylinders 41, the second cooling channel 13 extends in a first partial channel 16 in a first opening 31 from a first side 4 of a fire deck 17 and is connected to the first rising line 14 on this first side 4 flow-connected.
    The flow connection between first partial channel 16 and a second riser 44 of a second arranged on the second side 5
    Part cooling jacket space 45 of the cylinder block 40 produces a second sub-channel 18, which also emanates from the fire deck 17 in a second opening 32.
    The fire deck 17 is located in the area of the cylinder head density plane 11 and encloses all freely accessible areas of the cylinder head 10 from the cylinder head density plane 11.
    From Fig. 3 it can be seen in comparison with Fig. 2, that the second cooling channel 13 consists of two sub-channels 16, 18, which approach more and more, the farther -in direction of a cylinder axis 46 (ie from the sheet plane in FIG. 3) - remove from the fire deck 17.
    The first partial cooling space 15 and a second partial cooling space 19 are shaped in the embodiment shown so that they partially lead around bores 20 for cylinder head screws, not shown, as shown in FIG. 4.
    Each cylinder 41 has two first gas channels 21, for example inlet channels and two second gas channels 22, for example outlet channels. Between these and the combustion chamber 2 are the gas exchange valves, not shown, whose valve seats 23 can be seen in Fig. 4.
    The first 4 and second side 5 of the internal combustion engine 1 designate the inlet side and the outlet side in the present embodiments. The first part of the cooling chamber 15, the first riser 14 and the first gas passage 21, as well as the first Teilkühlmantelraum 43 are located on the first side 4 of the internal combustion engine 1. The second part of the cooling chamber 19, the second gas passage 22, the second riser 44 and the second Teilkühlmantelraum 45 are located on the second side 5 of the internal combustion engine. 1
    According to the invention 41 additional cooling channels are now provided in the web areas 12 between the cylinders. A first embodiment of the second cooling channel 13 can be seen in FIG. In this case, the first sub-channel 16 and the second sub-channel 18 intersect each other and in this embodiment, the sub-channels 16, 18 terminate immediately after an intersection 24 of a first 25 and a second sub-channel axis 26. The sub-channels 16 and 18 are designed as bores from the fire deck 17 go out. The resulting shape of the second cooling channel 13 is an inverted V, the tip of which is located in the region of the longitudinal center plane 27 between the first 15 and the second part of the cooling chamber 19.
    In the longitudinal center plane 27, which is formed by the cylinder axes 46, a distance, the sealing plane distance a defined by the
    Cylinder head density level 11 to the second cooling channel 13 is measured. This sealing plane distance a is greater than one in the illustrated embodiment
    Area of the combustion chamber 2 measured smallest wall thickness b of the fire deck 17 (Fig. 11).
    In the cylinder block 40 is the first cooling channel 42 which extends in the illustrated embodiment X-shaped between the first partial cooling jacket space 43 and the second partial cooling jacket space 45.
    In Fig. 7, a second embodiment is shown, in which the second sub-channel 18, the first sub-channel 16 intersects and is continued to the first part of the cooling chamber 15. The second cooling channel here runs Y-shaped, the open side of the "Y" points in the direction of the cylinder head density plane 11.
    In a third embodiment, as shown in Fig. 8, the first part of the channel 16 is continued to the second part of the cooling chamber 19 and the second cooling channel is also Y-shaped.
    As shown in FIG. 9, the second cooling passage 13 is X-shaped in a fourth embodiment. In this case, the second riser 44 of the second partial cooling jacket space 45 are flow-connected to the first partial cooling space 15 and the first riser 14 of the first partial cooling space 15 is connected to the second partial cooling space 19.
    In Fig. 10, a fifth embodiment is shown. In this case, in addition to the two sub-channels 16, 18 of the second cooling channel 13, a third sub-channel 28 is present. This third sub-channel 28 extends parallel to the cylinder head density plane 11 in the embodiment shown.
    In an embodiment not shown, it is possible that the third sub-channel 28 is inclined at an angle to the cylinder head sealing plane 11 and thus the first sub-channel 16 and the second sub-channel 18 of the second cooling channel 13 fluidly connected to each other.
    The third sub-channel 28 allows for long distances between inlet side and outlet side not too low angle of attack for a drilling tool in the manufacture of the sub-channels 16, 18. The third sub-channel 28 may be formed by lost cores in a casting process or through a hole. If the third sub-channel 28 is formed by a bore, which is not desired
    Blocked flow connection to the outside with not shown closures. The second cooling channel 13 may be formed for example by spark erosion. While the cooling channels in the illustrated embodiments extend substantially in or parallel to the engine transverse plane 3, variants are also possible in which the channels in the web region 12 are inclined to the engine transverse plane.
    权利要求:
    Claims (10)
    [1]
    1. Internal combustion engine (1) with liquid cooling with at least one cylinder block (40) and at least one cylinder head (10) for at least two cylinders (41), wherein the internal combustion engine (1) has a first side (4) and an opposite second side (5) an at least two cylinder axes (46) of the cylinder (41) spanned longitudinal center plane (27) and in at least one web region (12) between two adjacent cylinders (41) in the region of a normal to the longitudinal center plane arranged engine transverse plane (3) in the cylinder head (10 ) at least one of the first (4) and the second side (5) connecting the second cooling channel (13) with at least one first opening (31) on the first side (4) and at least one second opening (32) on the second side (5 ) is arranged, characterized in that the second cooling channel (13) between the first (31) and the second opening (32) is formed as a closed cross section in the cylinder head and of a Zyli Nderkopfdichtebene (11) of the cylinder head (10) at least in the region of the longitudinal center plane (27) in the direction of a cylinder axis (46) has a sealing plane spacing (a).
    [2]
    2. Internal combustion engine (1) according to claim 1, characterized in that at least one of the two openings (31, 32) in the region of the fire deck (17) is arranged.
    [3]
    3. internal combustion engine (1) according to claim 1 or 2, characterized in that - in the region of the longitudinal center plane (27) in the direction of the cylinder axis (46) measured - the sealing plane distance (a) between the second cooling channel (13) and the cylinder head density plane (11 ) corresponds to at least a smallest wall thickness (b) of a fire deck (17) of the cylinder head (10) in the region of a combustion chamber (2).
    [4]
    4. internal combustion engine (1) according to one of claims 1 to 3, characterized in that the second cooling channel (13) at least partially from an area of the fire deck (17) of the cylinder head (10), preferably from the cylinder head density plane (11) starting in the direction the longitudinal center plane (27) is performed increasing.
    [5]
    5. Internal combustion engine (1) according to any one of the preceding claims, characterized in that the second cooling channel (13) has at least a first sub-channel (16) and at least a second sub-channel (18), wherein the first sub-channel (16) on the first side (4) starting from the first opening (31) in an area of the fire deck (17) of the cylinder head (10), preferably from the cylinder head sealing plane (11) in the direction of the longitudinal center plane (27) rising and the second sub-channel (18) on the second side (5) extending from the second opening (32) in an area of the fire deck (17) of the cylinder head (10), preferably from the cylinder head density plane (11) in the direction of the longitudinal center plane (27).
    [6]
    6. Internal combustion engine (1) according to claim 5, characterized in that the first sub-channel (16) and the second sub-channel (18) - preferably in the region of the longitudinal center plane (27) - in the region of an intersection (24) of the sub-channel axes (25, 26 ), wherein preferably the intersection (24) is the sealing plane distance (a) from the cylinder head sealing plane (11).
    [7]
    7. Internal combustion engine (1) according to claim 5 or 6, characterized in that the first sub-channel (16) from the first opening (31) to a substantially on the second side (5) arranged second partial cooling space (19) of the cylinder head (10 ) is running running and / or that the second sub-channel (18) from the second opening (32) to a substantially on the first side (4) arranged first part of the cooling chamber (15) of the cylinder head (10) is running running.
    [8]
    8. Internal combustion engine (1) according to any one of claims 5 to 7, characterized in that between the first sub-channel (16) and the second sub-channel (18), a third sub-channel (28) is provided which is preferably parallel to the cylinder head density plane (11) ,
    [9]
    9. Internal combustion engine (1) according to one of the preceding claims, characterized in that the first opening (31) in a on the first side (4) arranged first Teilkühlmantelraum (43) of the cylinder block (40) opens and / or that the second opening (32) in a on the second side (5) arranged second Teilkühlmantelraum (45) of the cylinder block (40) opens.
    [10]
    10. Internal combustion engine (1) according to one of claims 1 to 9, characterized in that at least one second cooling channel (13) in the cylinder head (10) is formed by bores or by molding in a casting or by spark erosion.
    类似技术:
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    EP0203480A2|1986-12-03|Rotary internal-combustion engine
    DE3604667A1|1987-08-20|Cast cylinder head for a multi-cylinder in-line internal combustion engine
    AT514804B1|2015-04-15|Internal combustion engine with oil channels
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    同族专利:
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    DE112017002203A5|2019-01-24|
    WO2017210712A1|2017-12-14|
    CN109642516A|2019-04-16|
    US20190301394A1|2019-10-03|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50528/2016A|AT518537B1|2016-06-09|2016-06-09|Internal combustion engine|ATA50528/2016A| AT518537B1|2016-06-09|2016-06-09|Internal combustion engine|
    US16/308,097| US20190301394A1|2016-06-09|2017-06-09|Internal combustion engine|
    PCT/AT2017/060148| WO2017210712A1|2016-06-09|2017-06-09|Internal combustion engine|
    JP2018564388A| JP2019521274A|2016-06-09|2017-06-09|Internal combustion engine|
    DE112017002203.7T| DE112017002203A5|2016-06-09|2017-06-09|Internal combustion engine|
    CN201780035469.0A| CN109642516B|2016-06-09|2017-06-09|Internal combustion engine|
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