• 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 present invention relates to an arrangement for heating coolant in a cooling system in a vehicle (1). The cooling system comprises an additive heater (24) which is adapted to enable heating of at least one component of the cooling system when the internal combustion engine (2) is not activated. The arrangement comprises valves (21, 31, 36) which are adapted to conduct the coolant through an alternative conduit circuit when the heating unit (24) is activated. The alternative conduit circuit includes conduits (23, 30, 32) which conduct coolant to the ocli from the expansion plate (20). The alternative control circuit comprises at least one component (8, 28) in the ordinary control circuit of the cooling system, which is in need of heating of the additive detector (24). The alternative control circuit lacks at least one component in the ordinary control circuit (5, 10, 14, 18) which is not in need to heat the auxiliary heater (24). (Fig- 1)
    公开号:SE1050850A1
    申请号:SE1050850
    申请日:2010-08-12
    公开日:2012-02-13
    发明作者:Kardos Zoltan；Ola Hall
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    The hot coolant is circulated in the cooling system. Auxiliary heaters in cooling systems must therefore have a relatively large overcapacity in order to be able to heat the cab and the cylinder head of the internal combustion engine to a desired temperature.
    SUMMARY OF THE INVENTION The object of the present invention is to provide an arrangement for heating coolant in a cooling system where the hot coolant is mainly given to deliver the heat energy which it has received from auxiliary heater, to one or more specific components in need of heat from auxiliary heat. .
    This object is achieved with the arrangement of the kind mentioned in the introduction, which is characterized by the features stated in the characterizing part of claim 1. According to the present invention, the coolant is circulated through an alternative line circuit when the auxiliary heater is activated. This alternative circuit extends through the expansion tank of the cooling system. Thus, the existing expansion tank and connecting lines can be used to create the alternative line circuit. The alternative conduction circuit advantageously only comprises components that are in need of the heat from the auxiliary heater. Thus, the coolant does not receive unnecessary temperature losses as it circulates in the alternative line circuit. Essentially all the heat energy that the auxiliary heater supplies to the coolant can thus be used to heat the specific component or components that are in need of the heat from the auxiliary heater. In such an arrangement, an auxiliary heater with a relatively low brand power can be used.
    According to an embodiment of the invention, said destructive means comprises at least one valve means which is adjustable in a first position when it directs the flow of coolant through the ordinary line circuit and in at least a further position when it leads the coolant flow through the alternative line circuit. By means of such valve means, the flow of coolant can be controlled relatively easily so that the coolant is only led past the component or components in the ordinary line circuit which need to be heated by the auxiliary heater.
    According to a preferred embodiment of the invention, the alternative conduction circuit may comprise at least two components which are in need of heating of the auxiliary heater. The two components in need of heating of the auxiliary heater may be arranged in parallel in the alternative line circuit.
    Thus, hot coolant with the same temperature will heat the two components. Alternatively, said two components in need of heating of the auxiliary heater may be arranged in series therein. alternative management circuit. In this case, the hot coolant from the auxiliary heater is used first to heat one component and then to heat the other component.
    The component that is most in need of getting used to the hot coolant is arranged here upstream of the other component with respect to the direction of the coolant fl in the alternative line circuit.
    According to another preferred embodiment of the invention, the alternative conduit circuit comprises an additional soldering means which is adapted to circulate the coolant in the alternative conduit circuit. The alternative destiny means may consist of an additional coolant pump which is arranged at a suitable place in the alternative conduit circuit.
    The ordinary coolant pump in a cooling system is often located so that it cannot be used to circulate the coolant in the alternative line circuit. If the ordinary coolant pump has a location so that it can also be used to circulate the coolant in the alternative line circuit, it can of course also be used for this task.
    According to another preferred embodiment of the invention, the alternative conduit circuit comprises at least one vent line in the ordinary conduit circuit used here to conduct coolant to and / or from the expansion plate. At a number of places in the ordinary line circuit, pay-off lines are arranged which are connected to the expansion tank. It is often advisable to use one or more such conductive lines to conduct coolant in the alternative line circuit to and / or from the expansion power.
    According to another preferred embodiment of the invention, said activating means are manually activatable. Such a manual activating means may be a button member or the like. A control unit can receive information from such a manual button means and activate the auxiliary heater, start the auxiliary means and set the valves in positions so that the coolant is led through the alternative line circuit.
    Alternatively or in combination, said activating element can be activated automatically.
    This can, for example, occur at any time when a vehicle makes a cold start or that it makes a cold start at times when the environment has a temperature below a minimum acceptable temperature.
    According to another preferred embodiment, a component in need of hot coolant from the auxiliary heater is a heating element for heating air in a cab of the vehicle. In the first instance, additional heaters are applied in the cooling system in order to be able to maintain a desired temperature in a cabin when the internal combustion engine is switched off.
    The auxiliary heater can, for example, be activated when a driver rests in the vehicle while the environment has a low temperature. Alternatively or in combination, said component which is in need of hot coolant from the auxiliary heater may be Cylinder heads of the internal combustion engine. It is of great importance that the cylinder heads of the internal combustion engine reach an ideal operating temperature as quickly as possible.
    BRIEF DESCRIPTION OF THE DRAWINGS A In the following, by way of example, preferred embodiments of the invention are described with reference to the accompanying drawings, in which: Figs. Fig. 2 shows an arrangement according to a first embodiment of the invention and shows an arrangement according to a second embodiment of the invention.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Fig. 1 schematically shows a vehicle 1 driven by an internal combustion engine 2. The vehicle 1 is advantageously a heavy vehicle. The internal combustion engine 2 may be a supercharged diesel engine. The internal combustion engine 2 is cooled by coolant circulating in the cooling system. A coolant pump 3 circulates the coolant in the cooling system. The coolant pump 3 in this case pumps coolant, via a line 4, to an oil cooler 5 for cooling engine oil. A part of the coolant from the oil cooler 5 is then led to the cooling ducts 6 of the internal combustion engine 2. The cooling ducts 6 of the internal combustion engine have a stretch so that they cool, among other things, the cylinders 7 and cylinder heads 8 of the internal combustion engine. The coolant which has passed the cylinder heads 8 is led to a line 9 which leads the coolant to an oil cooler 10 for cooling retarder oil. After the oil cooler 10, the coolant is led in a line 11 to a thermostat 12 in the cooling system. When the coolant has reached its operating temperature, the thermostat 12 conducts the coolant, via a line 13, to a cooler 14 which is mounted at a remote part of the vehicle 1.
    The coolant is cooled here by air that is forced through the cooler 14 by means of a cooling fl genuine 15. If the coolant is cooled in the cooler 14, it is led back to the coolant pump 3 via a line 16. At times when the coolant has not reached its. operating temperature, the thermostat 12 directs the coolant directly to the line 16 and the coolant pump 3 without any cooling in the radiator 14. In this case the cooling system also comprises a line 17 which receives a part of the coolant which has passed through the oil cooler 5. This coolant is led to an EGR cooler 18 for cooling of recirculating exhaust gases. The coolant is then led to the line 16 and the coolant pump 3 via a line 19.
    The cooling system comprises an expansion tank 20. Expansion bar 20 is, via a valve 21, alternatively connected to an ordinary static line 22 or an alternative line 23.
    When the valve 21 is set in a first position, it connects the expansion tank 20 to the ordinary static line 22 which in turn is connected to the line 1-6. This is the case during normal operation of the cooling system. Then. the valve 21 is set in a second position, as shown in Fig. 1, connecting the expansion tank 20 to the alternative line 23.
    The alternative line 23 directs the coolant from the expansion tank 20 to an additional heater 24. In connection with the additional heater 24, an extra coolant pump 25 is arranged. The auxiliary coolant pump 25 is arranged in parallel with a one-way valve 26. The auxiliary coolant pump 25 directs at least a part of the coolant, via a line 27, to a heating element 28 which is arranged in or adjacent to a cab in the vehicle 1.
    A fan 29 is adapted to force a lute current through the heating element 28 to make the heating of the air in the cabin more efficient. A return line 30 connects the heating element 28 to the expansion tank 20. In a first position, a valve 31 connects the cylinder heads 8 to the expansion tank 20 via a deburring line 32.
    The valve 31 connects in a second position, As shown in Fig. 1, the cylinder heads 8 with the line 27. The cooler 14 is also connected to the expansion tank via a drain line 33. When the auxiliary heater 24 is to be activated, this can in this case be done by means of a first button means 34a and a second button member 34b. The button means 34a, 34b are connected to a control unit 35. When the control unit 35 senses that one of the button means 34a 34b has been pressed in, it activates the auxiliary heater 24. The control unit 35 simultaneously activates the additional coolant pump 25. The control unit 35 also sets the valve 10 in the second mode. The control unit 35 sets the valve 31 in the first or second position depending on which of the two button means 34a, 34b has been pressed.
    During normal operation of the vehicle when neither of the two button means 34a, 34b is depressed, the coolant pump 3 circulates coolant in the ordinary line circuit. The coolant then cools engine oil in the oil cooler 5, the internal combustion engine cylinders 7 and cylinder heads 8, retarder oil in the oil cooler 10 and recirculating exhaust gases in the EGR cooler 18. The hot coolant is cooled in the cooler 14. Optionally hot coolant can be led to the heating element 28. . In this case, a part of the hot coolant in the line 9 is led, via the inactivated additive heater 24, the one-way valve 26 and the line 27, to the heating element 28.
    The return line 30 then directs the coolant to the expansion tank 20.
    If a driver wants the cab to be heated when the internal combustion engine is switched off, the driver pushes in the first button member 34a. When the control unit 35 receives this information, it activates the auxiliary heater 24 and the auxiliary coolant pump 25.
    The control unit 35 simultaneously sets the valve 21 in the second position so that the expansion tank 20 is connected to the alternative line 23. The valve 31 is set in the first position so that the coolant from the auxiliary coolant pump 25 is only led to the heating element 28 and not to the cylinder heads 8. The auxiliary coolant pump 25 now sucks hot coolant from the auxiliary heater 24. The hot coolant is led from the extra coolant pump 25 to the line 27 and the heating element 28. The hot coolant here heats the air in the cab. The coolant is then led, via the return line 30, to the expansion plate 20. The coolant is led out from the expansion tank 20 and back to the auxiliary heater 24 via the valve 21 and the alternative line 23. In this case the valves 21, 31 control the coolant so that the coolant is only circulated in an alternative line circuit. which is clearly limited in relation to the ordinary management circle.
    The alternative line circuit comprises only one heat transfer component, namely the heating element 28. Other components where heat transfer takes place in the ordinary line circuit are not included in the alternative line circuit.
    Substantially all the heat energy which the auxiliary heater 24 supplies to the coolant can here be given off to the air which is forced through the heating element 28. The energy consumption for heating the cab here becomes rather low and an auxiliary heater 24 with a relatively low rated power can be used. 10 15 20 25 30 35 In connection with a driver intending to make or has already made a cold start of the vehicle, the button means 34b can be pressed. When the control unit 35 receives this information, it activates the auxiliary heater 24 and the auxiliary coolant purple 25. The control unit 35 simultaneously places the valve 21 in the second position so that the expansion tank 20 is connected to the alternative line 2-3 and the valve 31 in the second position so that the coolant from the auxiliary coolant pump 25 is led to both the heating element 28 and the cylinder heads 8. In this case a part of the hot coolant is thus led from the auxiliary coolant purp 25 to the line 27 and the heating element 28. The hot coolant here heats the air in the cab. The coolant is then led, via the return line 30, to the expansion tank 20. The coolant in the expansion tarpaulin 20 is led, via the valve 21 and the alternative line 23, back to the auxiliary heater 24 for re-heating.
    A remaining part of the hot coolant is led from the extra coolant purple 25 to the cylinder heads 8. The hot coolant here heats the cylinder heads 8.
    The coolant is then led, via line 9, back to the auxiliary heater 24. In this case, the valves 21, 31 control the coolant flow so that the hot coolant circulates in two parallel loops. In one loop comprising the heating element 28, the air in the cab is heated by the coolant and the other loop heats the cylinder heads 8 by the coolant. A very large part of the heat energy which the auxiliary heater 24 supplies to the coolant can also be used here to heat the air in the cab and the cylinder heads 8. Also in this case an alternative line circuit is used which does not contain any components which do not need to be heated. of the auxiliary heater 24.
    The energy consumption is also low here, Fig. 2 shows an alternative embodiment. In this case only one valve 36 is used.
    However, the valve 36 is adjustable in three different positions. During normal operation of the vehicle 1 when neither of the two button means 34a, 34b is depressed, the control unit 35 places the valve in a first position in which the valve 36 connects the expansion tank 20 to the ordinary static line 22. The ordinary coolant pump 3 thus circulates around coolant in the ordinary the wiring circuit. The coolant then cools engine oil in the oil cooler 5, the internal combustion engine cylinders 7 and cylinder heads 8, retarder oil in the oil cooler 10 and recirculating exhaust gases in the EGR cooler 18. The hot coolant is then cooled in the radiator 14. 10 15 20 25 30 35 If a driver wishes the cab to warm up when the vehicle is parked, the driver pushes in the first button member 34a. When the control unit 35 receives this information, it activates the auxiliary heater 24 and the auxiliary coolant pump 25. At the same time, the control unit 35 sets the valve 36 in a second position, as shown in Fig. 2, so that the expansion manifold 20 is connected to the alternative line 23. in this case coolant from line 23. The coolant is led from the auxiliary coolant purple 25 to line 27 and the auxiliary heater 24.
    The coolant is heated in the auxiliary heater 24 and then led to the heating element 28. The hot coolant here heats the hatch in the cab. The coolant is then led, via the return line 30, to the expansion tank 20. The coolant in the expansion tank 20 is then led, via the valve 21 and the alternative line 23, back to the additional coolant pump 25. Also in this case an alternative line circuit for the coolant is provided which is only a small part of the ordinary management circuit. The alternative circuit includes only the heating element 28 of the heat transfer components of the ordinary circuit.
    If a driver intends to make or has already made a cold start of the vehicle, the second button member 34b is pressed. When the control unit 35 receives this information, it activates the auxiliary heater 24 and the auxiliary coolant pump 25. The control unit 35 simultaneously sets the valve 31 in a third position. The valve 31 thus breaks the connection of the expansion tank 20 to both the static line 22 and the alternative line 23. The additional coolant pump 25 in this case circulates coolant in the line 27 to the auxiliary heater 24. The hot coolant from the auxiliary heater 24 is then led to the heating element 28. The hot coolant here heats the air which is forced through the heating element 28. The coolant is then led, via the return line 30, to the expansion tank 20. The coolant leaving the expansion tartar 20 is led, via the discharge line 32, to the cylinder heads 8 which are thereby heated by the coolant.
    The coolant is then led to the line 9 from where it is again led to the extra coolant pump 25. In this case, first the cab and then the cylinder heads 8 are heated by the hot coolant. The heating element 28 and the cylinder heads 8 are here arranged in series in the alternative line circuit. Also in this case an alternative circuit is provided which only comprises components 8, 28 which need to be heated by the auxiliary heater 24.
    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]
    An arrangement for heating coolant in a cooling system for an internal combustion engine (2) in a vehicle (1), the cooling system comprising an ordinary conduit circuit adapted to conduct the coolant to heat transfer contact with a number of components (5, 6, 8, 10). , 14, 28) in the vehicle, an expansion tank (20), an auxiliary heater (24) adapted to provide a cooling of the coolant and activating means (34a, 34b) adapted to activate the auxiliary heater (24), characterized in that the arrangement comprises means (21, 31, 36) adapted to conduct the coolant through an alternative conduit circuit when the heating assembly (24) is activated, the alternative conduit circuit comprising at least one conduit (30) conducting coolant to the expansion tank (20) and at least one conduit ( 23, 32) which directs coolant from the expansion tank (20), and wherein the alternative conduit circuit comprises at least one component (8, 28) in the ordinary conduit circuit which n is in need of heating of the auxiliary heater (24) and that it lacks at least one component in the ordinary conduction circuit (5, 10, 14, 18) which is not in need of heating of the auxiliary heater (24).
    [2]
    Arrangement according to claim 1, characterized in that said means means comprises at least one valve means (21, 3 1, 36) which is adjustable in a first position when it conducts the coolant flow through the ordinary line circuit and in an at least a further position then. it conducts coolant fate through the alternate circuit.
    [3]
    Arrangement according to Claim 1 or 2, characterized in that the alternative line circuit comprises at least two components (8, 28) which are in need of heating of the auxiliary heater (24).
    [4]
    Arrangement according to claim 3, characterized in that said two components (8, 28), which are in need of heating of the auxiliary heater (24), are arranged in parallel in the alternative line circuit.
    [5]
    Arrangement according to claim 3, characterized in that said two. components (8, 28), which are in need of heating of the auxiliary heater (24), are arranged in series in the alternative line circuit. 10 15 20 '10
    [6]
    Arrangement according to one of the preceding claims, characterized in that the alternative conduction circuit comprises an additional discharge means (25) which is adapted to circulate the coolant in the alternative conduction circuit.
    [7]
    Arrangement according to one of the preceding claims, characterized in that the alternative conduit circuit comprises at least one drain line (32) in the ordinary conduit circuit which is used for conducting coolant to and / or from the expansion tank (20).
    [8]
    Arrangement according to any one of the preceding claims, characterized in that said activating means (34a, 34b) are manually activatable.
    [9]
    Arrangement according to one of the preceding claims, characterized in that a component (28) which needs to be supplied with hot coolant from the auxiliary heater is a heating element (28) for heating lu fi in a cab of the vehicle (1).
    [10]
    Arrangement according to one of the preceding claims, characterized in that a component (28) which is required to be supplied with hot coolant from the additive grinder is a cylinder head (S) of the internal combustion engine (2).
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    同族专利:
    公开号 | 公开日
    BRPI1103300A2|2015-12-22|
    EP2418112A2|2012-02-15|
    EP2418112A3|2017-06-21|
    SE535803C2|2012-12-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2245703A|1990-07-03|1992-01-08|Ford Motor Co|Engine cooling system|
    AT396810B|1990-11-20|1993-12-27|Kresse Alois Dipl Ing|DEVICE FOR PREHEATING THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE|
    US9849753B2|2008-05-16|2017-12-26|GM Global Technology Operations LLC|Heating system for an automotive vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050850A|SE535803C2|2010-08-12|2010-08-12|Arrangement for heating coolant in a cooling system|SE1050850A| SE535803C2|2010-08-12|2010-08-12|Arrangement for heating coolant in a cooling system|
    BRPI1103300A| BRPI1103300A2|2010-08-12|2011-07-29|arrangement for heating the coolant in a refrigeration system|
    EP11176286.0A| EP2418112A3|2010-08-12|2011-08-02|Arrangement for warming of coolant in a cooling system|
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