• 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:

    公开号:SE537027C2
    申请号:SE1351555
    申请日:2013-12-20
    公开日:2014-12-09
    发明作者:Mats Ekman；Zoltan Kardos；Richard Jansson；Stig Hildahl；Magnus Carlsson
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    SUMMARY OF THE INVENTION The object of the present invention is to provide a cooling arrangement which is capable of providing a differentiated cooling of different parts of a cylinder in relation to the cooling needs of the respective parts.
    This object is achieved with the initially defined cooling arrangement which is characterized by the features stated in the characterizing part of the claim. Different parts of a cylinder require a cooling that is essentially related to how much heat energy they receive from a combustion process. The cooling effect that a circulating coolant adds is related to the coolant temperature and the coolant flow. According to the invention, initially all the coolant is led to a first fate passage which extends through the lower part of the cylinder head where the cooling demand is greatest. The coolant here has its lowest temperature at the same time as the coolant flow is optimal. As a result, the lower part of the cylinder head obtains an optimal cooling of the coolant.
    The cooling circuit is then divided into two parallel fl fate passages, namely a second flow passage which leads coolant through an upper part of the cylinder head and a third solder passage which leads the coolant to an upper part of the cylinder liner. An advantage of such a parallel flow is that the pressure losses in the cooling circuit become low. The coolant flow through the respective parallel flow passages, on the other hand, is lower than in the first coolant passage, at the same time as the coolant has a higher temperature after it has cooled the lower part of the cylinder head. The upper part of the cylinder head and the upper part of the cylinder liner are thus cooled by coolant with a reduced flow and an elevated temperature in relation to the coolant which cools the lower part of the cylinder head. The upper part of the cylinder head and the upper part of the cylinder liner are cooled thus obtaining a reduced cooling in relation to the lower part of the cylinder head. As a result, a differentiated cooling is obtained in a simple manner between the lower part of the cylinder head and adjacent parts which do not require the same cooling. This differentiated cooling is obtained with a cooling circuit where the coolant can be circulated with relatively low pressure losses.
    According to an embodiment of the present invention, the second flow passage and the third fate passage are dimensioned so that a greater coolant fate is obtained through the third fate passage than through the second flow passage. In this case, coolant of the same temperature but with different flows is passed through the upper part of the cylinder head and the upper part of the cylinder liner. By dimensioning the flow of coolant through the upper part of the cylinder head and the upper part of the cylinder liner, a suitable ratio of cooling effect to the respective parts can be obtained.
    Since the cooling demand is greater in the upper part of the cylinder liner than in the upper part of the cylinder head, thus the largest part of the coolant flow is passed through the upper part of the cylinder liner. As a result, a further differentiation of the cooling effect of the cylinder is obtained depending on the cooling needs of the components.
    According to an embodiment of the present invention, the coolant from the second solder passage and the third solder passage is collected in an outlet duct located at a lower height level than said flow passages. Thus, no area is obtained where stagnant coolant and any contaminants in the coolant can accumulate in the said fl fate passages.
    According to an embodiment of the present invention, the cooling arrangement comprises a fourth flow passage which leads a cooling medium through a lower part of the cylinder liner.
    Thus, a cooling ring is also provided to this part of the cylinder. The cooling requirement in this part of the cylinder is lower than in the above-mentioned parts. The cooling arrangement thus provides the lowest cooling power in this part of the cylinder.
    The cooling arrangement can in this case lead coolant from the first soldering passage also parallel to the fourth fl fate passage. In this case, the third fate passage is dimensioned so that they receive a smaller coolant flow than the coolant flow in the parallel arranged second discharge passage and the parallel arranged third fate passage.
    According to an embodiment of the present invention, the cooling arrangement may comprise a separate cooling circuit which leads a cooling medium through the fourth flow passage. Such a separate cooling circuit can lead a cooling medium in the form of coolant, gearbox oil or engine oil through the fourth fl passage. An advantage of using a separate cooling circuit is that it can only be activated when the internal combustion engine has reached a designated operating temperature or a cold start. With an initial lack of cooling of the lower part of the cylinder liner, the internal combustion engine can obtain a faster heating to the intended shit temperature. The friction losses that occur when the internal combustion engine has a lower temperature than the intended operating temperature can thus be reduced. According to an embodiment of the present invention, said first flow passage comprises channels which guide a parallel flow of coolant through the lower part of the cylinder head. With such channels arranged in parallel, the coolant can be spread in a desired manner over substantially the entire lower part of the cylinder head and / or concentrated in areas where cooling is prioritized. The parallel channels can be made rather short, which results in low pressure drops for the coolant as it is led through the first flow passage. The second coolant passage may also comprise a plurality of channels leading coolant in parallel through the upper part of the cylinder head. The third fl fate passage and the fourth fl fate passage may be included in a circular shot located between the cylinder liner and the cylinder block.
    According to an embodiment of the present invention, the first solder passage provides a coolant with a connection to all the inlet ducts and exhaust ducts in the cylinder head. It is important that the above-mentioned components arranged in the cylinder head are not exposed to excessive temperatures. The first flow passage may provide a coolant solder adjacent to an injector in the cylinder head. The injector is positioned in the cylinder head so that it is exposed to a large heat effect during a combustion process. The injector also comprises movably arranged parts which should be cooled well so that they are not exposed to a heat effect which may affect the function of the parts. The first fate passage may comprise at least one vertical channel which conveys coolant in a vertical direction adjacent to the injector. Such a vertical can advantageously shut off the injector. An injector that has an elongated front can thus obtain a good cooling. The coolant in such a vertical channel can be absorbed in any of the channels extending through the upper part of the cylinder head.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, by way of example, preferred embodiments of the invention are described with reference to the accompanying drawings, in which: Fig. 1 shows a cooling arrangement according to a first embodiment of the invention, Fig. 2 shows a sectional view through a lower part of a cylinder head and Fig. 3 shows a cooling arrangement according to a second embodiment of the invention. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Fig. 1 shows a cylinder 1 of an internal combustion engine which may be arranged in a vehicle. The combustion engine can be a diesel engine. The cylinder 1 conventionally comprises a cylindrical space enclosing a piston (not shown) movably arranged piston. The side walls of the cylinder are defined as a cylinder liner 2. The cylinder 1 is bounded upwards by a lower surface of a cylinder head 3. During the combustion processes in the cylinder 1, a combustion takes place in a combustion space in an upper part of the cylinder 1 between an upper surface of the piston and the lower surface of the cylinder head 3. In a lower part of the cylinder head 3, which we have defined as a first zone I, most heat energy is received from the combustion process. In an upper part of the cylinder head 3, which we have defined as a second zone II, less spring energy is received than in the first zone I. The upper part of the cylinder liner 2, which substantially forms the side walls of the combustion chamber, which we define as a third zone III, is next most heat energy from a combustion process. In a lower part of the cylinder liner 2 which is located at a lower level and which we define as a fourth zone IV, a relatively moderate heating is provided during a combustion process. However, all zones I-IV in connection with the cylinder 1 should be cooled during operation of the internal combustion engine so that it can be operated in an optimal manner and with a low fuel consumption.
    A cooling arrangement is adapted to provide a differentiated cooling of said zones I-IV of the cylinder 1. The cooling arrangement comprises a cooling circuit with circulating coolant. The cooling circuit can form part of a cooling system that cools the combustion engine and possibly other components in the vehicle. The coolant can be cooled in a cooler at the front of the vehicle before it is led back to said cooling circuit.
    The cooling circuit receives coolant from an inlet line 4. The coolant is initially led to a first fate passage which comprises a plurality of parallel arranged first channels 5 extending parallel through the lower part of the cylinder head 3. The first channels 5 have a spread so that the material and components in the whole the first zone I receives a substantially uniform cooling.
    After the coolant has passed through the first zone I, a part of the coolant flow is led to a second fate passage which comprises a plurality of channels 6 arranged in parallel in the upper part of the cylinder head 3. The channels 6 have a spread so as to obtain a 537 027 substantially uniform cooling throughout the second zone II. A remaining part of the coolant flow is led to a third flow passage 7 which has a stretch around the cylinder 1 in a gap-shaped space between the cylinder liner 2 and a surrounding cylinder block.
    The third flow passage 7 has a distribution so that a substantially uniform cooling is obtained in the entire third zone III. The coolant flow from the upper part of the cylinder head 3 and the coolant flow from the upper part of the cylinder lining merge in an outlet channel. 8. The outlet duct 8 can be used to collect coolant from several cylinders 1. The outlet duct 8 is located at a lower level than the flow passages 5, 6, 7 in the respective zones I-III. At least one of the parallel ducts 6 in the second upper flow passage comprises a vent duct 17. Each individual cylinder 1 of the combustion engine advantageously comprises such a vent duct 17. The individual air ducts 17 from several cylinders 1 can be connected to each other so that they has a common vent duct that extends up to an expansion tank.
    This results in a good reward for all fate passages 5, 6, 7 that are included in the cooling circuit. A separate cooling circuit with a circulating cooling medium which may be coolant or an oil is used to cool the lower part of the cylinder liner 2.
    The cooling circuit comprises an inlet 9 where the medium is received before it is led to a fourth fate passage 10 extending around the cylinder 1. The fourth flow passage 10 leads the cooling medium into a slit-shaped space located between the cylinder liner 2 and a surrounding cylinder block. The. The fourth solder passage 10 has a distribution so that a substantially uniform cooling is obtained in the entire fourth zone 1V. After the coolant has cooled the lower part of the cylinder liner 2, it accumulates in an outlet 11.
    Fig. 2 shows a cross-sectional view through the lower part of the cylinder head 3.
    The cylinder head 3 in this case comprises two inlet ducts 12 and two inlet valves 13 for supplying air to the cylinder 1 and two outlet ducts 14 and two exhaust valves 15 which regulate the emission of exhaust gases from the cylinder 1 in connection with a combustion process. An injector 16 is arranged in a central position in the cylinder head 3. The injector 16 injects fuel with a high pressure into the cylinder 1. The first fate passage comprises channels 5 which have a spread so that they extend completely around the inlet ducts 12, the exhaust ducts 13 and the injector 14. The first flow passage also includes a vertical channel Sa which provides a vertical coolant flow around the injector 16. An elongate injector can thus provide good cooling. Such a vertical channel Sa is shown in Fig. 1. The cooling demand thus varies in the different zones I-IV of the cylinder 1. The largest cooling demand is in zone 1, i.e. in the lower part of the cylinder head. The cooling effect that can. obtained with a circulating coolant is related to the temperature and flow of the coolant. In order to provide an optimal cooling effect in the lower part of the cylinder head, the entire coolant flow is led from the inlet 4 initially to the first fate passage 5. Thus, a cooling in the first zone Irned provides an optimal coolant flow and coolant having the lowest possible temperature. The cooling circuit thus provides a very efficient cooling in the first zone I. The second largest cooling need is in the third zone III, i.e. in the upper part of the cylinder liner. In order to provide a more efficient cooling in the third zone III than in the second zone II, the third fate passage 7 is dimensioned so that they receive a greater coolant fate than the second flow passage 6. The third flow passage 7 may have coarser dimensions than the second flow passage 6. The coolant which is led to the second zone II and the third zone III has the same temperature but different flows which results in the upper part of the cylinder liner obtaining a more efficient cooling than the upper part of the cylinder head. The lowest cooling requirement is in the lower part of the cylinder liner. Since the cooling demand there is relatively small, the separate cooling circuit can have a relatively small cooling capacity.
    During operation of the internal combustion engine, the cooling system directs coolant to the cooling circuit. The above cooling circuit provides the largest cooling power in the first zone I in the lower part of the cylinder head, the second largest cooling power in the third zone III in the upper part of the cylinder liner and the third largest cooling power in the second zone II in the upper part of the cylinder head. The separate cooling circuit is supplied with a cooling diameter which provides a cooling power in the fourth zone IV which is lower than the cooling power obtained in the above-mentioned zones I-III. The alternative cooling circuit can also start the circulation of the cooling medium through the fourth fate passage 10 in the lower part of the cylinder liner 2 after the internal combustion engine has received a certain heating after a cold start. Thus, the combustion engine's winding time to a suitable operating temperature can be shortened after a cold start. The friction losses obtained at a cold start can thus be reduced.
    Pig. 3 shows an alternative embodiment of the cooling arrangement. The cooling arrangement in this case comprises only one cooling circuit which supplies coolant to all four zones I-IV. The cooling circuit has an identical design with respect to the solder passages 5, 6, 7 in the first three zones I-III as in the embodiments in Fig. 1. We therefore do not make any further review of these parts of the cooling circuit. Unlike the cooling circuit above, the coolant which has passed through the first zone I in this case is also led parallel to the fourth zone IV. In order to provide a differentiated cooling in the three parallel cooled zones H-IV which receive coolant from the first zone I, the third fate passage 7 has been dimensioned so that they receive the largest coolant fate, the second solder passage 6 has been dimensioned so that they receive a less coolant fl fate than the third fi fate passage 7 and the fourth fl fate passage 10 has been downgraded so that it receives the least coolant fl fate. The coolant from the three parallel fate passages 5, 6, 7 is then immersed in a common outlet 8 which is located at a lower level than the lowest fourth flow passage 10 which extends through the lower part of the cylinder liner 2. Thus no areas in the discharge passages arise with stationary coolant where contaminants can accumulate. With the aid of a vent line 17 in the second highest flow passage 6, in this case a good drain of all fate passages 5, 6, 7, 10 is obtained.
    The invention is in no way limited to the embodiment described in the drawing but can be varied freely within the scope of the claims.
    权利要求:
    Claims (10)
    [1]
    Cooling arrangement for cooling at least one cylinder of an internal combustion engine, wherein the cylinder (1) comprises a cylinder head (3) and a cylinder liner (2), and wherein the cooling arrangement comprises a cooling circuit with a first fate passage (5) which leads coolant through a lower part of the cylinder head, a second fl passage passage (6) which carries coolant through an upper part of the cylinder head and a third fl fate passage (7) which leads coolant through an upper part of the cylinder liner (2), characterized in that the cooling circuit is adapted to initially conduct coolant through the first fate passage, after which the coolant is led in parallel through the second fate passage (6) and the third fate passage (7).
    [2]
    Cooling arrangement according to claim 1, characterized in that the second fl fate passage (6) and the third fl fate passage (7) are dimensioned so that a greater coolant fl fate is obtained through the third fl fate passage (7) than through the second fl fate passage (6).
    [3]
    Cooling arrangement according to claim 1 or 2, characterized in that the coolant leaving the second d fate passage (6) and the third fl fate passage (7) is collected in an outlet channel (8) located at a lower height level than said fl fate passages (6, 7) .
    [4]
    Cooling arrangement according to one of the preceding claims, characterized in that the cooling arrangement comprises a fourth fate passage (10) which leads a cooling medium through a lower part of the cylinder liner (2).
    [5]
    Cooling arrangement according to claim 4, characterized in that the coolant leaving the first fl passage passage (5) is also led parallel to the fourth fl passage passage (10).
    [6]
    Duct arrangement according to one of the preceding claims 1 to 4, characterized in that the cooling arrangement comprises a separate cooling circuit which leads a cooling medium through the fourth fate passage (10).
    [7]
    Cooling arrangement according to any one of the preceding claims, characterized in that said first fate passage comprises cooling channels (5) which provide a parallel fate of coolant through the lower part of the cylinder head (3). 10,537,027
    [8]
    Cooling arrangement according to any one of the preceding claims, characterized in that said first fate passage comprises cooling ducts (5) which provide a coolant flow in connection with all inlet ducts (12) and exhaust ducts (14) in the cylinder head (3) -
    [9]
    Cooling arrangement according to any one of the preceding claims, characterized in that said first fate passage comprises cooling channels (5) which provide a coolant fate in connection with an injector (16) in the cylinder head (3).
    [10]
    Cooling arrangement according to one of the preceding claims, characterized in that the first fate passage (5) comprises at least one vertical channel (5a) which carries coolant in a vertical direction in connection with an injector (16). 10
    类似技术:
    公开号 | 公开日 | 专利标题
    KR101703615B1|2017-02-07|Cylinder block water jacket structure having insert
    US10047660B2|2018-08-14|Liquid-cooled internal combustion engine
    JP5846135B2|2016-01-20|Internal combustion engine
    SE537027C2|2014-12-09|Cooling arrangement for cooling at least one cylinder of a single-combustion engine
    US20130206085A1|2013-08-15|Combustion engine with coolant collector for shut-down cooling and/or warm-up cooling
    US10858980B2|2020-12-08|Cooling system for an internal combustion engine
    RU2596084C2|2016-08-27|Cylinder head with liquid-type cooling
    JP6186506B2|2017-08-23|Vehicle cooling device
    JP2017053337A|2017-03-16|Adapter for engine cooling device
    KR101592428B1|2016-02-05|Integrated flow control valve apparatus
    SE538343C2|2016-05-24|Cooling system in a vehicle
    SE534412C2|2011-08-16|Arrangement for cooling compressed air which is led to an internal combustion engine
    JP2015124763A|2015-07-06|Cylinder head of engine
    CN102971518A|2013-03-13|Cooling system
    KR20200014069A|2020-02-10|Cooling structure for engine using exhaust manifold integrated cylinder head
    RU2649165C1|2018-03-30|Degassing system
    KR20180039777A|2018-04-19|Water jacket of cylinder head
    JP2011220292A|2011-11-04|Cooling device of internal combustion engine
    US20170114683A1|2017-04-27|Housing element having an integrated heat exchanger
    JP2016534283A|2016-11-04|Fluid cooling system
    KR101241165B1|2013-03-13|Oil-Cooler System
    CN102011638B|2012-05-30|Water cooling structure for multi-cylinder engine
    US10718254B2|2020-07-21|Coolant apparatus
    CN110966077B|2021-11-12|Internal combustion engine cooling system, control method and vehicle
    KR101772774B1|2017-08-29|Cooling apparatus of after flame gas
    同族专利:
    公开号 | 公开日
    KR101805855B1|2018-01-10|
    EP3084194B1|2019-02-06|
    US10634037B2|2020-04-28|
    EP3084194A1|2016-10-26|
    SE1351555A1|2014-12-09|
    US20160298522A1|2016-10-13|
    EP3084194A4|2017-07-19|
    WO2015094086A1|2015-06-25|
    KR20160101173A|2016-08-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB191304555A|1912-02-29|1913-04-10|Knut Jonas Elias Hesselman|Improvements in Cylinder Heads for Internal Combustion Engines.|
    DE1476397A1|1965-01-05|1969-05-29|Motoren Werke Mannheim Ag|Water-cooled internal combustion engine|
    DE2437965C2|1974-08-07|1982-09-16|Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen|Liquid-cooled cylinder head|
    JPS63186923U|1987-05-26|1988-11-30|
    EP0299679B1|1987-07-11|1992-10-14|Isuzu Motors Limited|Cooling system for heat insulating engine|
    AT5301U1|2001-01-29|2002-05-27|Avl List Gmbh|CYLINDER HEAD FOR MULTIPLE CYLINDERS|
    DE10212672A1|2002-03-22|2003-10-02|Daimler Chrysler Ag|Operating process for a fluid cooled combustion engine uses controller to direct cooling fluid according to need under cold start and warm conditions|
    AT6342U1|2002-07-23|2003-08-25|Avl List Gmbh|CYLINDER HEAD FOR A LIQUID-COOLED MULTI-CYLINDER INTERNAL COMBUSTION ENGINE|
    JP4100279B2|2003-07-16|2008-06-11|三菱自動車工業株式会社|Cylinder head precooled engine|
    FR2860833B1|2003-10-08|2007-06-01|Peugeot Citroen Automobiles Sa|COOLING CIRCUIT OF AN INTERNAL COMBUSTION ENGINE CONSISTING OF AT LEAST THREE COOLING PASSAGES|
    US7225766B2|2004-04-21|2007-06-05|General Motors Corporation|Engine cylinder cooling jacket|
    JP2007016718A|2005-07-08|2007-01-25|Toyota Motor Corp|Engine cooling device|
    DE102006006121B4|2006-02-10|2007-10-25|Audi Ag|Internal combustion engine with arranged in at least two parallel cylinder banks cylinders|
    JP4329774B2|2006-03-15|2009-09-09|トヨタ自動車株式会社|Cylinder head manufacturing method and cylinder head|
    US7520257B2|2006-04-13|2009-04-21|Caterpillar Inc.|Engine cylinder head|
    JP4175389B2|2006-06-05|2008-11-05|トヨタ自動車株式会社|Engine cooling system|
    DE102007037744A1|2007-08-10|2009-02-12|Daimler Ag|Cylinder head for internal combustion engine, has connection channel formed between valve seats of valve disks and connected with annular space, and another connection channel provided with larger diameter than former connection channel|
    US8539929B2|2009-11-18|2013-09-24|Harley-Davidson Motor Company|Cylinder head cooling system|
    CN103174504B|2010-03-03|2015-11-18|株式会社电装|For the controller of engine-cooling system|
    US8474251B2|2010-10-19|2013-07-02|Ford Global Technologies, Llc|Cylinder head cooling system|
    AT510857B1|2011-01-27|2012-07-15|Avl List Gmbh|LIQUID-COOLED INTERNAL COMBUSTION ENGINE|
    EP2735716B1|2011-07-20|2016-07-20|Toyota Jidosha Kabushiki Kaisha|Engine cooling device|
    JP2013133746A|2011-12-26|2013-07-08|Mitsubishi Motors Corp|Cooling structure of internal combustion engine|
    JP5903917B2|2012-02-08|2016-04-13|トヨタ自動車株式会社|Cooling device for internal combustion engine|
    US9243545B2|2013-01-11|2016-01-26|Ford Global Technologies, Llc|Liquid-cooled internal combustion engine with liquid-cooled cylinder head and with liquid-cooled cylinder block|
    GB2516647B|2013-07-29|2016-02-03|Jaguar Land Rover Ltd|Vehicle water jacket|EP3359876B1|2015-10-08|2021-12-01|Air Motion Systems, Inc.|Led module with liquid cooled reflector|
    SE541831C2|2016-06-15|2019-12-27|Scania Cv Ab|A Cylinder Head for an Internal Combustion Engine|
    CN109268120A|2018-08-22|2019-01-25|浙江吉利控股集团有限公司|A kind of cooling system of engine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351555A|SE1351555A1|2013-12-20|2013-12-20|Cooling arrangement for cooling at least one cylinder of a single-combustion engine|SE1351555A| SE1351555A1|2013-12-20|2013-12-20|Cooling arrangement for cooling at least one cylinder of a single-combustion engine|
    KR1020167019846A| KR101805855B1|2013-12-20|2014-12-03|Cooler arrangement for cooling at least one cylinder of a combustion engine|
    EP14872083.2A| EP3084194B1|2013-12-20|2014-12-03|Cooler arrangement for cooling at least one cylinder of a combustion engine|
    US15/037,729| US10634037B2|2013-12-20|2014-12-03|Cooler arrangement for cooling at least one cylinder of a combustion engine|
    PCT/SE2014/051444| WO2015094086A1|2013-12-20|2014-12-03|Cooler arrangement for cooling at least one cylinder of a combustion engine|
    [返回顶部]