• 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:
    The invention relates to a liquid-cooled internal combustion engine having at least one cylinder block having a plurality of cylinders (9) and having a cooling jacket (1), the cooling jacket (1) having a crankcase facing floor (2) and a cylinder head sealing plane facing ceiling (3) and the floor (2) - viewed in a side view of the cylinder block - has a wave-like course, wherein measured in the direction of the cylinder axis (4) distance (H) of the bottom (2) of the cooling jacket (1) of the ceiling (3) in the area at least a first engine transverse plane (7) containing the cylinder axis (4) is larger than in the region of at least one second engine transverse plane (5) between two adjacent cylinders (9). In order to reduce the cylinder deformation is provided that the distance (H2) of the bottom (2) of the cooling jacket (1) from the ceiling (3) in at least one frontal region (8) of the cooling jacket (1) - preferably in the region of a cylinder by axes (4) spanned motor longitudinal plane (13) - is less than in the region of the second engine transverse plane (5) between two adjacent cylinders (9).
    公开号:AT512280A4
    申请号:T50027/2012
    申请日:2012-02-08
    公开日:2013-07-15
    发明作者:Robert Berger
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    56342 1
    The invention relates to a liquid-cooled internal combustion engine with at least one cylinder block having a plurality of cylinders, wherein the cooling jacket has a crank chamber facing bottom and a cylinder head sealing plane facing ceiling and the bottom - viewed in a side view of the cylinder block - has a wave-like course, said the measured in the direction of the cylinder axis distance of the bottom of the cooling jacket from the ceiling in the region of at least one cylinder axis containing the first engine transverse plane is greater than in the region of at least a second engine transverse plane between two adjacent cylinders.
    US 5,080,049 A describes a cylinder block for an internal combustion engine having a plurality of cylinders, wherein the cylinders are surrounded by a cooling jacket. The cooling jacket has a wave-like course on a longitudinal side of the cylinder block, the distance between the bottom of the cooling jacket and the cylinder head sealing plane being lower in the region of a transverse engine transverse plane containing the cylinder head screw axes than in the region of a first engine transverse plane containing the cylinder axis.
    A liquid-cooled internal combustion engine with a similarly shaped cooling jacket is also known from AT 504 983 Bl.
    WO 95/21323 Al discloses a cooling system of a two-stroke internal combustion engine having a plurality of cylinders, which are surrounded by a cooling jacket. The bottom of the cooling jacket is wave-shaped and communicates with a lower coolant collector in the region of the engine transverse plane between two cylinders via U-shaped branch passages and vertical channel sections.
    Furthermore, from CN 2 751 151 Y a cooling jacket for a crankcase is known, the cooling jacket bottom - as viewed in a side view - is wave-shaped. The cooling jacket has a smaller distance from the cylinder head sealing plane in the region of a first engine transverse plane containing the cylinder axis than in the region of a second engine transverse plane between two cylinders. This is to improve the cooling of thermally highly stressed areas.
    In particular in the area of the edge cylinders, relatively large cylinder deformations can occur.
    Bl 2
    The object of the invention is to avoid this disadvantage and to reduce the deformation of the edge cylinder.
    According to the invention this is achieved in that the distance of the bottom of the cooling jacket from the ceiling in at least one end region of the cooling jacket - preferably in the region of an engine longitudinal plane spanned by cylinder axes - is less than in the region of the second engine transverse plane between two adjacent cylinders.
    Particularly good results can be achieved if the distance between the floor and the ceiling in at least one frontal area to about 90%, preferably between about 50% and 70% of the distance between the floor and the ceiling.
    Due to the constriction in the direction of the cylinder axis in the frontal region of the cooling jacket on the one hand, the cooling in this area can be reduced and thus achieves a uniform temperature profile of the cylinder block, and on the other hand, the structure of the cylinder block significantly stiffened and thus deformations are significantly reduced.
    The invention will be explained in more detail below with reference to FIGS.
    1 shows a cooling jacket of a cylinder block according to the invention in a side view in a first embodiment, Fig. 2 shows the cooling jacket in a plan view, Fig. 3 shows the cooling jacket in a frontal view, Fig. 4 shows a cooling jacket of a cylinder block according to the invention in a side view in one FIG. 5 shows the fourth-order deformations for an edge cylinder in the case of a known cylinder block and cylinder block according to the invention.
    1 to 3 show a cylinder jacket surrounding cooling jacket 1 of a cylinder block not shown in detail an internal combustion engine with four cylinders 9. The bottom 2 of the cooling jacket 1 is - seen in the side view shown in Fig. 1 - wave-shaped, so that the distance H of Bottom 2 of the cylinder head plane 3, viewed in the longitudinal direction of the cylinder block, increases and decreases. In detail, the distance H in the region of a cylinder axis 4 containing the first engine transverse plane 5 is greater than in the range of between two third
    Cylinders - for example, through the axes 6 of the cylinder head bolt holes for the cylinder head bolts - extending second engine transverse plane. 7
    Furthermore, in the frontal area 8 of the edge cylinder 9 - in particular in the area of the engine longitudinal plane 13 spanned by the cylinder axes 4 - the distance H2 between the bottom 2 and the ceiling 3 of the cooling jacket 1 is less than in the region of second engine transverse planes 7 between two cylinders 9. Der Distance H2 between the ceiling 3 and the floor 2 in the frontal area 8 of the end face 1a, 1b is about 50 to 80% of the maximum distance H between the ceiling 3 and the floor 2 in the region of the first motor transverse plane 5.
    In Fig. 4 and 6, a cooling jacket 1 is shown for a three-cylinder internal combustion engine, wherein in Fig. 4 for comparison with the proposal according to the invention with dashed lines 10, the course of a known Kühlmantelseingezeichnet. By shortening the distance from H2 to H2, there is a marked improvement in the fourth-order cylinder deformation in the region indicated by reference numeral 11 of the deformation diagram shown in FIG. Here, in the deformation diagram of FIG. 5, the original deformation profile is indicated by the dashed line 12 ', and the deformation profile by a shortened distance H2 is designated by reference number 12.
    By shortening the distance H2 between the ceiling 3 and the bottom 2 of the cooling jacket 1 in the front side region 8 of the cooling jacket 1 bordering the edge cylinder, the rigidity of the cylinder block can thus be substantially increased.
    权利要求:
    Claims (3)
    [1]


    1. A liquid-cooled internal combustion engine having at least one cylinder block with a plurality of cylinders (9) having a cooling jacket (1), the cooling jacket (1) having a crankcase facing floor (2) and a cylinder head sealing plane facing ceiling (3) and the floor (2) - viewed in a side view of the cylinder block - has a wave-like course, wherein measured in the direction of the cylinder axis (4) distance (H) of the bottom (2) of the cooling jacket (1) from the ceiling (3) in Area of at least one of the cylinder axis (4) containing the first engine transverse plane (7) is greater than in the region of at least a second engine transverse plane (5) between two adjacent cylinders (9), characterized in that the distance (H2) of the bottom (2) of the cooling jacket (1) of the ceiling (3) in at least one end face region (8) of the cooling jacket (1) - preferably in the region of an engine longitudinal axis spanned by cylinder axes (4) ne (13) - is smaller than in the region of the second engine transverse plane (5) between two adjacent cylinders (9).
    [2]
    2. Internal combustion engine according to claim 1, characterized in that the distance (H2) of the bottom (2) of the cooling jacket (1) from the ceiling (3) in at least one end region (8) is the least.
    [3]
    3. Internal combustion engine according to claim 1 or 2, characterized in that the distance (H2) between the bottom (2) and the ceiling (3) in at least one end region (8) to about 90%, preferably between about 50% and 70th % of the distance between the floor (2) and the ceiling (3) is. 2012 02 08 Fu / Bt
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20150000619A1|2015-01-01|
    DE112013000888A5|2014-10-16|
    AT512280B1|2013-07-15|
    CN104105865A|2014-10-15|
    WO2013117612A1|2013-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5080049A|1991-05-10|1992-01-14|General Motors Corporation|Two stroke engine with tiered cylinder cooling|
    WO1995021323A1|1994-02-01|1995-08-10|Orbital Engine Company Pty. Limited|Two-stroke engine cooling system|
    CN2751151Y|2004-12-03|2006-01-11|长安汽车（集团）有限责任公司|Structure improved crankcase water jacket|
    AT504983B1|2008-04-30|2009-08-15|Avl List Gmbh|LIQUID-COOLED INTERNAL COMBUSTION ENGINE|
    JP2011106398A|2009-11-19|2011-06-02|Honda Motor Co Ltd|Cooling structure for internal combustion engine|
    DE102011104457A1|2010-06-29|2011-12-29|Mazda Motor Corp.|Cooling device for a water-cooled engine, method for producing the same and method for preparing a mold therefor|
    SE509077C2|1997-05-30|1998-11-30|Volvo Ab|Internal combustion engine|
    DE102008013813A1|2008-03-12|2009-09-17|Daimler Ag|Cylinder crankcase and method of making same|
    DE102009023530A1|2009-05-30|2010-12-02|Bayerische Motoren Werke Aktiengesellschaft|Liquid-cooled internal-combustion engine i.e. four-cylinder internal-combustion engine, has supply channel provided from coolant supply channel in coolant channel in longitudinal side that opens out in wedge area of bar|AT517117B1|2015-05-12|2017-03-15|Avl List Gmbh|LIQUID-COOLED INTERNAL COMBUSTION ENGINE|
    CN108131212B|2017-12-29|2020-06-23|浙江吉利动力总成有限公司|Engine cooling jacket structure|
    US10920711B2|2018-06-26|2021-02-16|Ford Global Technologies, Llc|Flow-directing water jacket diverter|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50027/2012A|AT512280B1|2012-02-08|2012-02-08|LIQUID-COOLED INTERNAL COMBUSTION ENGINE|ATA50027/2012A| AT512280B1|2012-02-08|2012-02-08|LIQUID-COOLED INTERNAL COMBUSTION ENGINE|
    PCT/EP2013/052365| WO2013117612A1|2012-02-08|2013-02-07|Liquid-cooled internal combustion engine|
    US14/377,538| US20150000619A1|2012-02-08|2013-02-07|Liquid-cooled internal combustion engine|
    DE112013000888.2T| DE112013000888A5|2012-02-08|2013-02-07|Liquid-cooled internal combustion engine|
    CN201380007956.8A| CN104105865A|2012-02-08|2013-02-07|Liquid-cooled internal combustion engine|
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