• 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:
    SUMMARY Cooling system comprising: a cooling circuit for cooling an internal combustion engine of a motor vehicle, a first cooling water pump (10) driven by the internal combustion engine arranged in a first line (9) of the cooling circuit, and an electrically driven second cooling water pump (12) arranged in a second line (13) of the cooling circuit. The inlet and outlet of the second line are connected to the first line in a first point (P1) and a second point (P2) of the first line, respectively. A non-return valve (20) is arranged at said second point. The non-return valve comprises a valve flap (21) which is pivotable between a first abutment, in which the valve flap thanks the outlet of the second line, and a second abutment, in which the valve flap extends over the first line. When the first coolant pump is in operation and the second coolant pump is switched off, the valve flap takes on the first stroke, and when the second coolant pump is in operation and the first coolant pump is switched off, the valve flap takes on the second stroke.
    公开号:SE1450667A1
    申请号:SE1450667
    申请日:2014-06-03
    公开日:2015-12-04
    发明作者:Mats Ekman
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Other advantageous features of the cooling system according to the invention appear from the dependent claims and the description below.
    The invention also relates to a motor vehicle having the features defined in claim 8.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with the aid of exemplary embodiments, with reference to the accompanying drawings. It is shown in: Fig. 1 a principle sketch of a cooling system according to a first embodiment of the present invention, Fig. 2a is a schematic illustration of a part of the cooling system according to Fig. 1, with a valve flap of a non-return valve entering the cooling system shown in a first view, Fig. 2ben schematic illustration corresponding to Fig. 2a, but with the valve flap shown in a second spirit, Fig. 3 is a schematic illustration on a larger scale of said non-return valve, Fig. 4 is a principle sketch of a cooling system according to a second embodiment of the invention, and Fig. third embodiment of the invention.
    DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION Fig. 1 illustrates a cooling system 1 according to an embodiment of the present invention. The cooling system 1 comprises a cooling circuit 2 for cooling an internal combustion engine 3 of a motor vehicle 4 by means of a cooling liquid flowing in the cooling circuit, preferably in the form of water with any freezing point reducing additives such as glycol. A cooling water cooler 5 is connected in the cooling circuit 2 for cooling said cooling water.
    The cooling system 1 comprises a first cooling water pump 10 for circulating the cooling liquid in the cooling circuit 2, this first cooling water pump 10 being arranged in a first line 9 of the cooling circuit 2 and arranged to be driven by the internal combustion engine 3 via a mechanical power transmission arrangement 11. The first cooling water pump is with a pump rotor connected to a rotating shaft of the internal combustion engine 3 via said power transmission arrangement 11 to allow the pump rotor to be rotated under the action of this rotating shaft of the internal combustion engine.
    The cooling system 1 also comprises a second cooling water pump 12 for circulating the cooling liquid in the cooling circuit 2, this second cooling water pump 12 being electrically driven and arranged in a second line 13 of the cooling circuit. The second cooling water pump 12 is provided with a pump rotor which is connected to an output shaft of an electric motor to allow the pump rotor to be rotated during the operation of this electric motor. The second conduit 13 has an inlet 13a connected to the first conduit 9 at a first point P1 of the first conduit and an outlet 13b connected to the first conduit 9 at a second point P2 of the first conduit downstream of said first point. P1. The cooling liquid circulating in the cooling circuit 2 can be bypassed by the second cooling water pump 12 via the portion 14 of the first line 9 extending between the points P1 and P2.
    A cooling water outlet 7b of the cooling water cooler 5 is connected to a cooling water inlet 8a of the internal combustion engine 3 via said first line 9 and a cooling water outlet 8b of the internal combustion engine 3 is connected to a cooling water inlet 7a of the cooling water cooler 5 via a third line 15 of the third line 15 of the third line 15. connected to said first line 9 via a fourth line 16 of the cooling circuit. This fourth line 16 is connected to the first line 9 at a third point P3 of the first line upstream of said first and second points P1, P2 and arranged to allow coolant to be returned from the internal combustion engine coolant outlet 8b to the internal combustion engine cooling water inlet 8a without through the cooling water cooler 5. The fourth line 16 thus forms a bypass, via which the cooling water circulating in the cooling circuit 2 can be bypassed the cooling water cooler 5 during its passage between the cooling water outlet 8b and the cooling water inlet 8a of the internal combustion engine 3. Between the cooling water outlet 3 the coolant through coolant channels inside the internal combustion engine while absorbing heat from the internal combustion engine. A thermostat 17 is connected in the third line 15. This thermostat 17 is arranged to regulate the flow of cooling water to the cooling water cooler 5 and to said fourth line 16 depending on the temperature of the cooling water.
    The cooling liquid flowing through the cooling water cooler 5 is cooled by means of air which is biased by the speed wind towards the cooling water cooler when the motor vehicle is in motion. The cooling system 1 may also comprise a flap (not shown) which is arranged to generate an air flow through the cooling water cooler 5 if necessary. This flap may be arranged to be driven by an electric motor or connected to the internal combustion engine 3 to be driven by it.
    The first cooling water pump 10 can be disengaged from the internal combustion engine 3 by means of an electrically operated coupling device 18.
    A non-return valve 20 is arranged at the above-mentioned second point P2. This non-return valve 20 comprises a pivotally mounted valve flap 21 which is pivotable about a pivot axis 22 between a first abutment (see Fig. 2a), in which the valve flap 21 is swung away from the first line 9 and closes the outlet 13b of the second line 13 to thereby prevent a cooling water backflow in the second conduit 13, and a second abutment (see Fig. 2b), in which the valve flap 21 is swung away from the outlet 13b, has the second conduit 13 and extends over the first conduit 9 to thereby prevent a backflow of cooling water in the portion 14 of the first conduit 9 extending between said first point P1 and said second point P2. In Fig. 3 the valve flap 21 is shown with solid lines in the second stroke and with dashed lines in the first stroke. The valve flap 21 is arranged to occupy said first container when coolant under the action of the first coolant pump 10 flows through said portion 14 of the first line 9 while the second coolant pump 12 is shut off, and to occupy said second container when coolant under the action of the second cooling water pump 12 flows through the second line 13 at the same time as the first cooling water pump 10 is disconnected from the internal combustion engine 3 and is thus switched off. In a situation when the coolant pumps 10, 12 are in operation, the valve flap 21 will assume a bearing somewhere between the two surfaces.
    In said first abutment the valve flap 21 abuts against a first shoulder 23 arranged at the outlet 13b of the second line 13 (see Fig. 3) and in said second abutment the valve flap 21 abuts against a second shoulder 24 arranged in the first conduit 9.
    The valve flap 21 is advantageously arranged so that under the action of gravity and / or the spring force of a spring member 25 acting on the valve flap 21 (see Fig. 3) it takes said second abutment when the coolant pumps 10, 12 are switched off and no coolant flows through the first and second the lines 9, 13, the valve flap 21 in this case being pivotable from said second breath in the direction of said first breath under the action of a cooling water flood generated by the first cooling water pump 10 through said portion 14 of the first line 9.
    As an alternative, the valve flap 21 could be arranged to, under the action of gravity and / or the spring force of a spring member 25 acting on the valve flap 21, assume the first receptacles when both the cooling water pumps 10, 12 are switched off and no cooling water flows through the first and second the lines 9, 13, the valve flap 21 in this case being pivotable from said first breath in the direction of said second breath under the action of a cooling water flow generated by the second cooling water pump 12 through the second line 13.
    The coupling device 18 and the second cooling water pump 12 are controlled by means of an electronic control device 30 in dependence on a predetermined control algorithm, which may, among other things, be arranged to take into account the motor load of the internal combustion engine 3 and the temperature of the cooling liquid. During cold start of the internal combustion engine 3 and at low engine load with added cooling demand of the internal combustion engine 3, the electronic control device 30 is arranged to place the coupling device 18 in the disconnection position so that the first coolant pump 10 is disengaged from the internal combustion engine 3 and thereby deactivated. with suitable speed for generating a desired laid flow of coolant in the cooling circuit 2. The valve flap 21 will then automatically take up the above-mentioned second abutment and thereby prevent backflow in said portion 14 of the first line 9. When the cooling demand of the internal combustion engine 3 then to a predetermined level, the electronic control device 30 is arranged to place the coupling device 18 in the coupling position so that the first cooling water pump is connected to the internal combustion engine 3 and thereby activated and to simultaneously deactivate the second cooling water pump 12. The valve flap 21 will then automatically swinging from the second stop to the first stop and thereby preventing backflow in the second line 13. The electronic coupling device 30 may be implemented by means of a single electronic control unit of the motor vehicle, as illustrated in Figs. 1, 4 and 5. The electronic control device However, the system 30 could alternatively be implemented by means of two or more inboard cooperating electronic control units of the motor vehicle.
    In the embodiment illustrated in Fig. 1, the first cooling water pump 10 is arranged in the portion 14 of the first line 9 extending between said first and second points P1, P2. In this case, the first cooling water pump 10 and the second cooling water pump 12 are thus connected in parallel with each other. However, the first cooling water pump 10 could alternatively be arranged in the first line 9 downstream of said second point P2, as illustrated in Fig. 4. As a further alternative, the first cooling water pump 10 could be arranged in the first line 9 upstream of said first point P1, as illustrated in Fig. 5.
    As mentioned above, the electrically driven second coolant pump 12 can be used to maintain a laid flow of coolant in the cooling circuit 2 at cold start or at low engine load. The second coolant pump 12 could also be used to: - maintain a flow of coolant in the cooling circuit 2 after the internal combustion engine 3 has been switched off, - maintain a flow of coolant in the cooling circuit 2 in a situation when the first cooling water pump 10 driven by the internal combustion engine 3 ceases to operate due to a malfunction, or 13 - operated together with the first coolant pump 10 to generate a strong flow of coolant in the cooling circuit 2 in a situation with very high engine load and extra large cooling demand of the internal combustion engine 3, the valve valve 21 taking one! age between the above-mentioned spirits.
    The cooling system according to the invention is particularly intended for use in a heavy motor vehicle, such as, for example, a bus, a towing vehicle or a truck.
    The invention is of course not limited in any way to the embodiments described above, but a number of possibilities for modifications thereof should be obvious to a person skilled in the art, without the latter deviating from the basic idea of the invention as defined in the appended claims. 14
    权利要求:
    Claims (8)
    [1]
    1. that the valve flap (21) is arranged under the action of gravity and / or the spring force of a spring member (25) acting on the valve flap (21) to assume said second abutment! The coolant pumps (10, 12) are switched off and no coolant flows through the first and second lines (9, 13), and
    [2]
    2. that the valve flap (21) is pivotable from said second breath in the direction of said first breath under the action of a cooling water flow generated by the first cooling water pump (10) through said portion (14) of the first line (9).
    [3]
    Cooling system according to claim 1, characterized in that: 1. that the valve flap (21), under the action of gravity and / or the spring force of a spring means (25) acting on the valve flap (21), is arranged to assume said first abutment when the cooling 16 the water pumps (10, 12) are switched off and no cooling water flows through the first and second lines (9, 13), and - that the valve flap (21) is pivotable from said first member in the direction of said second member under the action of one of the second the coolant pump (12) generated coolant flow through the second line (13).
    [4]
    Cooling system according to any one of claims 1-3, characterized in that the first cooling water pump (10) is arranged in said portion (14) of the first line (9).
    [5]
    Cooling system according to any one of claims 1-3, characterized in that the first cooling water pump (10) is arranged in the first line (9) downstream of said second point (P2).
    [6]
    Cooling system according to any one of claims 1-3, characterized in that the first cooling water pump (10) is arranged in the first line (9) upstream of said first point (P1).
    [7]
    Cooling system according to any one of claims 1-6, characterized in that said first line (9) is arranged to connect a cooling water outlet (7b) of the cooling water cooler (5) to a cooling water inlet (8a) of the internal combustion engine (3).
    [8]
    Motor vehicle comprising an internal combustion engine (3), characterized in that the motor vehicle (4) comprises a cooling system (1) according to any one of claims 1-7 for cooling the internal combustion engine (3) and an electronic control device (30) for controlling the coupling device (18) and the second cooling water pump (12) of the cooling system (1).
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    同族专利:
    公开号 | 公开日
    SE538434C2|2016-06-28|
    KR20170007452A|2017-01-18|
    WO2015187079A1|2015-12-10|
    EP3152425A4|2018-01-03|
    EP3152425B1|2019-05-08|
    CN106460632A|2017-02-22|
    EP3152425A1|2017-04-12|
    CN106460632B|2019-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2519694B1|1982-01-08|1984-04-27|Valeo|
    JPH09158724A|1995-12-12|1997-06-17|Asmo Co Ltd|Circulating water passage structure for vehicle|
    JP3635869B2|1997-06-16|2005-04-06|株式会社デンソー|Check valve|
    DE19854308A1|1998-11-25|2000-05-31|Bosch Gmbh Robert|Valve|
    DE10249448B4|2002-10-24|2005-12-15|Pierburg Gmbh|Bypass valve device|
    DE102006036186A1|2006-08-01|2007-10-11|Voith Turbo Gmbh & Co. Kg|Vehicle's cooling circuit has auxiliary cooling medium pump, driven by drive unit provided in addition to driving engine, and connected in parallel to main cooling medium pump driven by driving engine |
    US8196553B2|2008-01-30|2012-06-12|Chrysler Group Llc|Series electric-mechanical water pump system for engine cooling|
    DE102008059613B4|2008-11-28|2010-12-30|Itw Automotive Products Gmbh|Cooling system for an internal combustion engine|
    JP5633199B2|2010-06-07|2014-12-03|株式会社日本自動車部品総合研究所|Internal combustion engine cooling system|
    CN202117755U|2011-06-15|2012-01-18|中国汽车技术研究中心|Electronic-control auxiliary cooling system of engine insusceptible to rotating speed of engine|
    CN102337959A|2011-09-09|2012-02-01|潍柴动力股份有限公司|Three-level speed-regulating hydraulically-driven cooling system|DE102018107776B4|2018-04-03|2020-01-23|Nidec Gpm Gmbh|Hybrid powered double pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1450667A|SE538434C2|2014-06-03|2014-06-03|Cooling system and a motor vehicle comprising such a cooling system|SE1450667A| SE538434C2|2014-06-03|2014-06-03|Cooling system and a motor vehicle comprising such a cooling system|
    EP15803827.3A| EP3152425B1|2014-06-03|2015-05-27|Cooling arrangement and a motor vehicle equipped with such a cooling system|
    KR1020167035526A| KR20170007452A|2014-06-03|2015-05-27|Cooling arrangement and a motor vehicle equipped with such a cooling system|
    PCT/SE2015/050609| WO2015187079A1|2014-06-03|2015-05-27|Cooling arrangement and a motor vehicle equipped with such a cooling system|
    CN201580027669.2A| CN106460632B|2014-06-03|2015-05-27|Cooling structure and motor vehicles equipped with the cooling structure|
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