• 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 cooling system (1) for cooling a transmission which has a housing on which at least one temperature-sensitive component is mounted, comprising a transmission ventilation device (4) attached to the bodywork which is adjacent to the transmission and which is provided to supply cooling air to the transmission, the transmission ventilation device (4) having a first air duct (6) with an air inlet opening through which cooling air can enter, and with an air outlet opening (62) out of which cooling air can exit, as well as a cooling air guiding means (7), this the latter being connected to the first air duct (6) and being constructed so that it can direct the cooling air directly onto said temperature sensitive component.
    公开号:FR3066574A1
    申请号:FR1854030
    申请日:2018-05-15
    公开日:2018-11-23
    发明作者:Eberhard Palmer；Andreas Lukas
    申请人:Dr Ing HCF Porsche AG；
    IPC主号:
    专利说明:

    DESCRIPTION
    The present invention relates to a cooling system for cooling a transmission, which transmission has a housing on which is mounted at least one temperature-sensitive component, in particular a control device, comprising a transmission ventilation device fixed to the body which is adjacent to the transmission and that is intended to provide cooling air to the transmission.
    Various embodiments of cooling systems for cooling a transmission are known in the prior art. The cooling air in this case enters through at least one air inlet in the cooling system and can be guided for example using one or more air guide ducts and / or through the using air deflection means, in particular air deflection blades, towards particular areas of the transmission.
    Document DE 103 08 084 B4 discloses a cooling system for cooling a transmission, in which a covering part in a front region of a transmission housing has corresponding air inlets for cooling purposes. These are made with a large surface in order to generate a displacement of slowly flowing air.
    The transmissions known in the prior art often have one or more temperature sensitive components. These temperature sensitive components include, for example, a transmission control device. This control device, which can for example be mounted on an outer side of a transmission housing, is exposed to relatively high thermal stresses during operation. However, in order to guarantee the functioning of the control device, it is therefore necessary to take appropriate measures which allow effective cooling of the control device. Otherwise there could be a problem of overheating of the control device both while driving and when stopped.
    The object of the invention is therefore to provide a cooling system of the generic type for cooling a transmission which simply provides efficient cooling of a component.
    -2 temperature sensitive, in particular a control device, of the transmission.
    This object is achieved by a cooling system of the type mentioned in the introduction, characterized in that the transmission ventilation device has a first air duct with an air inlet opening through which air cooling air can enter the first air duct, and with an air outlet opening from which cooling air can come out of the first air duct, as well as an air guiding means cooling, the cooling air guide means being connected to the first air duct and being designed so that it can direct the cooling air flowing out of the air outlet opening directly onto the temperature sensitive component of the transmission.
    A cooling system according to the invention is therefore characterized in that the transmission ventilation device has a first air duct with an air inlet opening through which cooling air can enter the first air duct, and with an air outlet opening from which cooling air can exit from the first air duct, as well as a means for guiding cooling air, the means for cooling air guide being connected to the first air duct and being designed so that it can direct the cooling air flowing out of the air outlet opening directly onto the component sensitive to the transmission temperature. With this measure, an effective direct cooling of the temperature-sensitive component, in particular of the control device, of the transmission is obtained.
    In order to allow effective cooling of the temperature-sensitive component, in particular of the control device, it is proposed, according to an advantageous embodiment, that the means for guiding the cooling air is formed so that it s extends at least in part around the temperature sensitive component of the transmission and that it surrounds it at least in part. Therefore, the cooling air can be led at least in part directly to the temperature sensitive component of the transmission.
    According to a particularly advantageous embodiment, the means for guiding the cooling air can be formed so that it completely surrounds the temperature-sensitive component. From this
    In fact, even more efficient direct cooling of the temperature-sensitive component, in particular of the control device, of the transmission, can be obtained. The fact that the temperature-sensitive component, in particular the control device, is completely surrounded by the air guide means, makes it possible to effectively and advantageously avoid stationary heating. The cooling air guide means can in particular be formed essentially in the form of a tuba.
    According to a preferred embodiment, the means for guiding the cooling air may have a first end and the first air duct may have a free end in which the air outlet opening is made, the first end of the cooling air guide means and the free end of the first air duct being formed so that the first air duct extends inside the cooling air guide means in the position mounting instructions. In other words, the free end of the first air duct therefore plunges inside the first end of the cooling air guide means so that a reliable flow connection between the air duct and the cooling air guide means is obtained.
    Preferably, the transmission ventilation device, fixed to the bodywork, can be mounted on an underside of the bodywork of the motor vehicle. This gives a more secure attachment of the transmission ventilation device to the body of the motor vehicle. Therefore, the cooling air is in this case routed to the transmission ventilation device advantageously from below the body of the motor vehicle.
    In order to obtain a more secure fixing of the cooling air guide means, it is proposed, according to a preferred embodiment, that the cooling air guide means is fixedly mounted to the transmission on the housing. of the transmission.
    In order to allow relative movements of the cooling air guide means with respect to the first air duct at the level of the underbody of the motor vehicle, in particular during the mounting fixed to the transmission of the cooling air guide means and from the mounting fixed to the body of the transmission ventilation device, it can be provided, according to a particularly preferred embodiment, that the free end of the first
    -4 air duct is made so that it narrows in the direction of the air outlet opening. With this measure, there is still enough clearance for relative movements of the cooling air guide means relative to the free end engaging therein of the first air duct. Thanks to this narrowing, a nozzle effect is also obtained which positively influences the flow behavior of the cooling air when it passes through the first air duct.
    In order to obtain a further improved cooling of the transmission, it is proposed, according to an advantageous embodiment, that the transmission ventilation device has a second air duct which comprises an air inlet opening through which the cooling air can enter the second air duct, as well as an air outlet opening through which the cooling air can exit from the second air duct.
    Preferably, the second air duct can be positioned adjacent to the first air duct. The cooling air flow from the second air duct can for example be directed towards a lower side of the transmission in order to be able to effectively cool this area.
    According to an advantageous improvement, the second air duct can be formed so that it narrows in the direction of its air outlet opening. This narrowing causes a nozzle effect which positively influences the flow behavior of the cooling air when it passes through the second air duct.
    Other characteristics and advantages of the present invention will appear clearly on reading the following description of a preferred embodiment with reference to the accompanying drawings in which:
    fig. 1 illustrates a perspective view of part of a transmission of a motor vehicle with a control device which is mounted on a housing of the transmission, FIG. 2 illustrates an exploded view of a cooling system for cooling the transmission according to FIG. 1, FIG. 3 illustrates a perspective view of the cooling system according to FIG. 2,
    -5 Fig. 4 illustrates a perspective representation of the part of the transmission according to FIG. 1 with the cooling system according to FIGS. 2 and 3, FIG. 5 illustrates a bottom view of the part of the transmission according to FIG. 1 with the cooling system according to FIGS. 2 and 3.
    FIG. 1 illustrates part of a transmission 2 which, in the present case, is a so-called type transmission, or known under the name "Hang-On" which is used in four-wheel drive motor vehicles controlled by clutch, in which one of the axles of the motor vehicle is driven continuously and the other axle is driven only when necessary. The transmission 2 has a housing 20 on which is mounted a control device 3 which is designed to control the operation of the transmission 2. This control device 3 is a component sensitive to the temperature of the transmission
    2. Consequently, it is necessary to effectively cool this control device 3 to avoid overheating which can occur both while driving the motor vehicle and when stationary and which can, under certain circumstances, cause a disturbance in operation. or potentially irreversible damage to the control device 3.
    In order to allow efficient cooling of the control device 3, a cooling system 1 is provided, which is illustrated in detail in FIGS. 2 and 3. The cooling system 1 has a transmission ventilation device 4, which, fixed to the bodywork, can be mounted on an underside of a motor vehicle bodywork. The transmission ventilation device 4 comprises an air inlet 5 by means of which cooling air can be supplied from below the body of the motor vehicle to the transmission 2 in order to cool it.
    In addition, the transmission ventilation device 4 comprises a first air duct 6 with an air inlet opening 60 visible in the bottom view of FIG. 5. Cooling air can flow through through this air inlet opening 60 from the underside of the bodywork of the motor vehicle into the first air duct 6. The first air duct 6 also has a free end 61 with an outlet opening d air 62 out of which cooling air can flow out of the first air duct 6.
    In order to be able to effectively cool the control device 3 mounted on the housing 20 of the transmission 2, the cooling system 1 also has a means for guiding cooling air 7 which, in the present case, is essentially carried out by snorkel shape. The cooling air guide means 7 has a first end 70 which is formed so that it can be exposed to the first air duct 6 so that the latter extends and plunges inside the cooling air guide means 7. As a result, a more secure flow connection is obtained, so that the cooling air can flow out of the air outlet opening 62 of the first duct air 6 to the cooling air guide means 7.
    The cooling air guide means 7 is formed so that it extends around the control device 3 mounted on the housing 20 of the transmission 2 and surrounds the latter at least in part, preferably completely. By virtue of the cooling air passing through the cooling air guide means 7 and leaving towards the control device 3, the control device 3 can be cooled directly and therefore can be effectively protected against overheating. As the air guide means 7 is designed and arranged so as to surround the control device 3 preferably completely, it results, in a particularly advantageous manner, that the transmission 2 can be effectively cooled not only while driving the vehicle automotive but also stopped so that a stationary overheating of the control device 3 can be effectively prevented.
    The cooling air guide means 7 also has a second end 71 which is fixedly mounted to the transmission on the housing 20 of the transmission 2. Thanks to this assembly fixed to the transmission, the guide means cooling air 7 has three degrees of freedom for relative movements with respect to the transmission ventilation device 4 fixed to the body in three spatial directions perpendicular to each other (i.e. in the longitudinal direction, in the transverse direction and in the vertical direction), when the transmission 2 moves for its part in the corresponding directions. In order to allow these relative movements of the cooling air guide means 7 fixed to the transmission relative to the transmission ventilation device 4 fixed to the body, the end
    -7libre 61 of the first air duct 6 is made in such a way that it narrows in the direction of the air outlet opening 62. As a result, there is enough clearance for relative movements of the means of cooling air guide 7 relative to the free end 61 engaging therein of the first air duct 6. This narrowing further provides a nozzle effect which advantageously influences the flow behavior of the cooling air when it passes through the first air duct 6.
    In order to further improve the cooling of the transmission 2, the transmission ventilation device 4 also has a second air duct 8 which also includes an air inlet opening 80 through which the cooling air can enter from below the bodywork of the motor vehicle into the second air duct 8, as well as an air outlet opening 81, through which the cooling air can exit from the second air duct 8. Thanks to the cooling air flowing through the second air duct 8, the transmission 2 can be effectively cooled in particular at a lower side facing the underside of the body of the motor vehicle. This second air duct 8, in this exemplary embodiment, is also formed so that it narrows in the direction of its air outlet opening 81, so that a nozzle effect is produced which positively influences the flow behavior of the cooling air when it passes through the second air duct 8. The air outlet opening 81 is in this case divided into two zones by means of a chord separation 82.
    The cooling system 1 described here advantageously allows effective cooling of at least one temperature-sensitive component of the transmission 2, which, in this case, is a control device 3. The control device 3 is in this case completely surrounded by the cooling air guide means 7 which can be supplied with cooling air from the underside of the motor vehicle body by means of the first air duct 6 formed specifically.
    Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Cooling system (1) for cooling a transmission (2), which transmission (2) has a housing (20) on which is mounted at least one temperature-sensitive component, in particular a control device (3), comprising a transmission ventilation device (4) fixed to the body which is adjacent to the transmission (2) and which is intended to supply cooling air to the transmission (2), characterized in that the ventilation device transmission (4) has a first air duct (6) with an air inlet opening (60) through which cooling air can enter the first air duct (6) , and with an air outlet opening (62) from which cooling air can exit from the first air duct (6), as well as a means for guiding cooling air (7), the cooling air guide means (7) being connected to the first air duct (6) and being re aligned so that it can direct the cooling air flowing out of the air outlet opening (62) directly to the temperature sensitive component of the transmission (2).
    [2" id="c-fr-0002]
    2. Cooling system (1) according to claim 1, characterized in that the cooling air guide means (7) is formed so that it extends at least in part around the component sensitive to the transmission temperature (2) and surrounds it at least in part.
    [3" id="c-fr-0003]
    3. Cooling system (1) according to claim 2, characterized in that the cooling air guide means (7) is formed so that it completely surrounds the temperature sensitive component.
    [4" id="c-fr-0004]
    4. Cooling system (1) according to any one of claims 1 to 3, characterized in that the cooling air guide means (7) has a first end (70) and the first air duct ( 6) has a free end (61) in which the air outlet opening (62) is made, the first end (70) of the cooling air guide means (7) and the free end (61 ) of the first air duct (6) being formed such that the first air duct (6)
    -9 extends inside the cooling air guide means (7) in the prescribed mounting position.
    [5" id="c-fr-0005]
    5. Cooling system (1) according to any one of claims 1 to 4, characterized in that the transmission ventilation device (4), fixed to the bodywork, is mounted at the level of a vehicle bodywork underside automobile.
    [6" id="c-fr-0006]
    6. Cooling system (1) according to any one of claims 1 to 5, characterized in that the cooling air guide means (7) is fixedly mounted to the transmission on the housing (20) of the transmission (2).
    [7" id="c-fr-0007]
    7. Cooling system (1) according to any one of claims 4 to 6, characterized in that the free end (61) of the first air duct (6) is produced so that it narrows in the direction of the air outlet opening (62).
    [8" id="c-fr-0008]
    8. Cooling system (1) according to any one of claims 1 to 7, characterized in that the transmission ventilation device (4) has a second air duct (8) which comprises an inlet opening d air (80) through which cooling air can enter the second air duct (8), as well as an air outlet opening (81) through which cooling air can exit from the second air duct (8).
    [9" id="c-fr-0009]
    9. Cooling system (1) according to claim 8, characterized in that the second air duct (8) is arranged adjacent to the first air duct (6).
    [10" id="c-fr-0010]
    10. Cooling system (1) according to any one of claims 8 or 9, characterized in that the second air duct (8) is formed so that it narrows in the direction of its outlet opening air (81).
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    同族专利:
    公开号 | 公开日
    DE102017110921A1|2018-11-22|
    JP2018194170A|2018-12-06|
    KR102052266B1|2019-12-04|
    US20180335125A1|2018-11-22|
    JP6612927B2|2019-11-27|
    US10344847B2|2019-07-09|
    KR20180127215A|2018-11-28|
    FR3066574B1|2021-11-26|
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    法律状态:
    2019-05-23| PLFP| Fee payment|Year of fee payment: 2 |
    2020-03-13| PLSC| Publication of the preliminary search report|Effective date: 20200313 |
    2020-05-22| PLFP| Fee payment|Year of fee payment: 3 |
    2021-05-20| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017110921.8|2017-05-19|
    DE102017110921.8A|DE102017110921A1|2017-05-19|2017-05-19|Cooling arrangement for cooling a transmission|
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