US20190345868A1 - Electric coolant pump - Google Patents
Electric coolant pump Download PDFInfo
- Publication number
- US20190345868A1 US20190345868A1 US16/349,602 US201716349602A US2019345868A1 US 20190345868 A1 US20190345868 A1 US 20190345868A1 US 201716349602 A US201716349602 A US 201716349602A US 2019345868 A1 US2019345868 A1 US 2019345868A1
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- Prior art keywords
- coolant
- operating point
- pump
- inlet
- coolant inlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/161—Controlling of coolant flow the coolant being liquid by thermostatic control by bypassing pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
- F01P2005/125—Driving auxiliary pumps electrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/50—Temperature using two or more temperature sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
Definitions
- the present invention relates to an electric coolant pump for delivering a coolant.
- the invention moreover relates to a motor vehicle having an internal combustion engine and such a coolant pump.
- a coolant pump is usually used for cooling an internal combustion engine, wherein the cooling power is usually controlled via a thermostat valve.
- a thermostat valve can open a bypass circumventing a radiator, for example when only a low cooling power is required.
- Such a thermostat valve often possesses an expansion element which enables comparatively simple temperature-dependent control.
- the coolant pumps known from the prior art are disadvantageous in that they often run at constantly high power and are controlled exclusively via a thermostat valve. A comparatively high amount of energy is thus needed to operate the coolant pump.
- a further and decisive disadvantage is that the known coolant pumps and the thermostat valves arranged separately therefrom need a comparatively large installation space.
- the present invention is therefore concerned with the problem of providing an improved or at least an alternative embodiment for an electric coolant pump, which, in particular, overcomes the disadvantages known from the prior art.
- the present invention is based on the general idea of integrating a valve device in a coolant pump and, at the same time, no longer operating this expensively under a constantly high load and therefore with a comparatively high amount of energy, but instead providing a plurality of power stages in the manner of operating points, wherein the valve device controls a coolant flow depending on the selected operating point of the coolant pump and the pressure generated by this in the process.
- the electric coolant pump according to the invention serves in a known manner for delivering a coolant, for example in the cooling circuit of an internal combustion engine, and is adjustable between a plurality of operating points.
- the electric coolant pump has at least one first coolant inlet, at least one second coolant inlet and a coolant outlet, as well as a valve device which is formed such that, depending on the selected operating point of the coolant pump and therefore the pressure p in the coolant, it opens or closes at least one first or second coolant inlet or simultaneously opens at least one first and second coolant inlet, wherein the valve device is integrated in the coolant pump and thus optimally arranged in terms of the installation space.
- the coolant pump and the valve device form a common unit or the valve device is integrated in the coolant pump.
- a particularly compact design can thus be achieved, which is highly advantageous in modern engine compartments and the limited spatial conditions associated therewith.
- such a coolant pump can also be prefabricated externally and inserted into the motor vehicle as a fully pre-assembled unit, thereby resulting in assembly advantages.
- the coolant pump in the first operating point, is switched off and at least one first coolant inlet is opened.
- the first operating point of the coolant pump is therefore synonymous with an off state.
- the first operating point is used in particular during a cold-start phase of the internal combustion engine, in which additional cooling of the internal combustion engine is not desired.
- a second operating point provides a greater delivery power and thus represents a comfort mode in which only an average cooling power of the internal combustion engine is required, which can also be achieved, for example, via a heat exchanger of an air-conditioning system of a motor vehicle.
- the third operating point of the cooling pump is represented by a cooling mode, for example, in which the valve device is set such that the coolant flow circulates via a radiator, the heat exchanger and the internal combustion engine.
- a cooling mode for example, in which the valve device is set such that the coolant flow circulates via a radiator, the heat exchanger and the internal combustion engine.
- the valve device expediently has a valve body which, in the first and second operating point, assumes a first position, in which it blocks at least one second coolant inlet and uncovers at least one first coolant inlet.
- the second coolant inlet is connected to a radiator of the motor vehicle, whilst the first coolant inlet is connected, for example, to the heat exchanger of an air-conditioning system of the motor vehicle.
- the coolant flow is therefore not conducted via a radiator of the motor vehicle.
- the valve device has a valve body which, in the third operating point, assumes a second position, in which it uncovers at least one first coolant inlet and at least one second coolant inlet.
- the valve body assumes the second position solely as a result of the increased coolant pressure in the third operating point.
- the valve body assumes a third position, in which it blocks at least one first coolant inlet and uncovers a second coolant inlet.
- a spring device which prestresses the valve body in its first position.
- the coolant pressure must therefore increase, which is usually only achieved if the coolant pump is adjusted from its second operating point to its third operating point.
- the coolant pressure p 2 , p 3 counteracts the pressure P F applied by the spring device.
- a temperature sensor and a control device communicatively connected thereto are expediently provided for controlling the operating points and therefore the power of the coolant pump depending on the temperature of the coolant.
- To enable the respective operating point of the coolant pump to be selected it is necessary to determine a cooling requirement, which is possible via the temperature sensor provided according to the invention and the control device communicatively connected thereto according to the invention.
- a cooling requirement which is possible via the temperature sensor provided according to the invention and the control device communicatively connected thereto according to the invention.
- the control device adjusts the coolant pump to its first operating point, i.e. switches it off or allows it to be switched off, for example.
- the control device can detect this via the temperature sensor and, according to a characteristic map, for example, adjusts the coolant pump to its second operating point, in which an average cooling power is achieved. If the load on the internal combustion engine increases significantly, for example when driving uphill, the temperature of the coolant also increases, whereupon the control device adjusts the coolant pump to its third operating point, in which the coolant flow is conducted via the heat exchanger and the radiator and not, as in the second operating point, exclusively via a heat exchanger of an air-conditioning system of the motor vehicle, for example, and thus generates a considerably higher cooling power for cooling the internal combustion engine.
- the control device adjusts the coolant pump to its fourth operating point, in which the coolant flow is conducted exclusively via the radiator and not, as in the third operating point, additionally via the heat exchanger of the air-conditioning system of the motor vehicle. Therefore, a temperature-dependent control of the operating points of the coolant pump is also possible via the temperature sensor and the control device communicatively connected thereto.
- the present invention is further based on the general idea of equipping a motor vehicle with an internal combustion engine, a radiator, a heat exchanger, an air-conditioning system and a coolant pump described above, wherein at least one first coolant inlet and the coolant outlet are connected to the internal combustion engine, whilst at least one second coolant inlet is connected to the radiator.
- a motor vehicle according to the invention requires considerably less electrical energy to operate the coolant pump than is the case in the hitherto constantly running coolant pumps. However, not only can electrical energy be saved thereby, but also fuel.
- FIG. 1 shows a partly sectional coolant pump according to the invention, having a valve device with a valve body located in the first position,
- FIG. 2 shows an illustration as in FIG. 1 , but with the valve body located in its third position
- FIG. 3 shows an exploded illustration of the coolant pump according to the invention with a valve device
- FIG. 4 shows a schematic diagram of an installation situation of the coolant pump according to the invention in a motor vehicle according to the invention
- FIG. 5 shows an illustration as in FIG. 4 , but with a third coolant inlet in the coolant pump.
- an electric coolant pump 1 according to the invention for delivering a coolant 2 has at least one first coolant inlet 3 , 3 ′, at least one second coolant inlet 4 , 4 ′ and a coolant outlet 5 .
- the coolant pump 1 according to the invention is adjustable between a plurality of operating points, in particular between a first, a second, a third and a fourth operating point.
- the coolant pump 1 has a valve device 6 , which is integrated in the coolant pump 1 and which is formed such that, depending on the selected operating point of the coolant pump 1 and therefore the coolant pressure p, opens or closes the at least one first or second coolant inlet 3 , 3 ′, 4 , 4 ′ or simultaneously opens at least one first and second coolant inlet 3 , 3 ′, 4 , 4 ′.
- a valve device 6 which is integrated in the coolant pump 1 and which is formed such that, depending on the selected operating point of the coolant pump 1 and therefore the coolant pressure p, opens or closes the at least one first or second coolant inlet 3 , 3 ′, 4 , 4 ′ or simultaneously opens at least one first and second coolant inlet 3 , 3 ′, 4 , 4 ′.
- the coolant pump 1 according to the invention and the valve device 6 form a common unit 16 which, compared to hitherto used coolant pumps with thermostat valves arranged separately therefrom, is considerably compacter in design and thus offers considerable advantages in terms of installation space.
- a first operating point of the coolant pump 1 has, for example, a delivery power of 0 l/min and a pressure p 1 of 0 bar.
- a second operating point of the coolant pump 1 has, for example, a delivery power of ca. 125 l/min and a pressure p 2 of ca. 0.4 bar
- a third operating point has, for example, a delivery power of ca. 220 l/min and a pressure p 3 of ca. 1.4 bar.
- the pressures in the respective operating points are achieved by a corresponding rotational speed of the coolant pump 1 , so that, in the second operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3 , 3 ′ is opened and at least one second coolant inlet 4 , 4 ′ is closed, wherein, in the third operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3 , 3 ′ and at least one second coolant inlet 4 , 4 ′ are opened, and wherein, in a fourth operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3 , 3 ′ is closed and at least one second coolant inlet 4 , 4 ′ is opened.
- valve device 6 With regard to the construction of the valve device 6 according to the invention, reference is made below to FIGS. 1 to 3 , from which it can be seen that the valve device 6 possesses a valve body 7 which, in this case, is formed as an adjustable valve piston 8 and which, in the first and second operating point, assumes a first position (c.f. FIGS. 1 and 4 ), in which it blocks at least one second coolant inlet 4 , 4 ′ and uncovers at least one first coolant inlet 3 , 3 ′.
- the valve body 7 assumes a second position, in which it uncovers at least one first coolant inlet 3 , 3 ′ and at least one second coolant inlet 4 , 4 ′.
- the valve body 7 assumes a third position, in which it blocks at least one first coolant inlet 3 , 3 ′ and uncovers a second coolant inlet 4 , 4 ′ (c.f. FIG. 2 ).
- a spring device 9 for example a simple helical spring, is provided, which prestresses the valve body 7 in its first position, in which at least one second coolant inlet 4 , 4 ′ is blocked.
- the spring device 9 exerts a force on the valve body 7 which, in relation to the surface thereof, corresponds to a pressure p F .
- a temperature sensor 10 and a control device 11 communicatively connected thereto can likewise be provided for controlling the operating points of the coolant pump 1 depending on the temperature of the coolant 2 .
- the valve device 6 is continuously adjustable depending on the rotational speed of the coolant pump 1 .
- the valve device 6 according to the invention can also have other valve bodies 7 , so that the valve device 6 can also be formed as a ball valve or as a disk valve, for example.
- the valve piston 8 illustrated according to FIG. 3 possesses leakage openings 17 for pressure equalization.
- FIG. 4 now shows a motor vehicle 12 having an internal combustion engine 13 , a radiator 14 , a heat exchanger 15 in an air-conditioning system which is not otherwise illustrated, and having a coolant pump 1 according to the passages above.
- a first coolant inlet 3 , 3 ′ of the coolant pump 1 like the coolant outlet 5 , is connected to the internal combustion engine 13 , whilst a second coolant inlet 4 , 4 ′ is connected to the radiator 14 .
- the coolant pump 1 in terms of controlling a coolant flow 2 , the coolant pump 1 according to the invention functions as follows:
- Cooling of the internal combustion engine 13 is not required or desired upon a cold start thereof in order to accelerate the heating of the internal combustion engine 13 and therefore achieve a more rapid lowering of emissions.
- the coolant pump 1 is located in its first operating point, in which it does not bring about a build-up of pressure and does not deliver coolant 2 and is therefore switched off. If the temperature of the coolant 2 increases, this is detected via the temperature sensor 10 , for example, which, in the present case according to FIG. 1 , is arranged in the region of the coolant pump 1 , but can, of course, additionally or alternatively also be positioned at another point in the coolant system.
- the control device 11 connected to the temperature sensor 10 adjusts the coolant pump 1 to its second operating point, in which at least one second coolant inlet 4 , 4 ′ is still closed and a coolant flow circulates exclusively via the internal combustion engine 13 and, for example, the heat exchanger 15 of the air-conditioning system of the motor vehicle 12 . Also, in this case, only moderate cooling of the internal combustion engine 13 is required in this second operating point.
- the pressure p 2 of the coolant 2 generated in the second operating point is lower than the pressure p F acting on the valve body 7 by means of the spring device 9 , so that the spring device 9 prestresses the valve body 7 in its first position in opposition to the coolant pressure p 2 .
- the control device 11 adjusting the coolant pump 1 to its third operating point, in which both the delivery power of the coolant pump 1 and also the pressure p 3 generated thereby in the coolant 2 increase significantly.
- the coolant pressure p 3 being greater than the pressure p F applied by the spring device 9 so that, in the third operating point, the valve body 7 is adjusted to the right according to FIG. 2 , the spring device 9 is compressed and simultaneously uncovers at least one second coolant inlet 4 , 4 ′, whereby the coolant flow now circulates via the internal combustion engine 13 and the radiator 14 and via the coolant pump 1 back to the internal combustion engine 13 .
- the maximum cooling power is also produced in the fourth operating point since the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3 , 3 ′ is closed and at least one second coolant inlet 4 , 4 ′ is opened.
- the valve body 7 takes assumes its third position, in which it blocks at least one first coolant inlet 3 , 3 ′ and uncovers a second coolant inlet 4 , 4 ′ so that all of the coolant flow 2 flows via the internal combustion engine 13 and the radiator 14 .
- FIG. 5 shows that the motor vehicle 12 has an electric motor 18 and an electrical energy accumulator 19 , wherein at least one third coolant inlet 20 is connected to the electric motor 18 and/or the electrical energy accumulator 19 .
- the third coolant inlet 20 and the coolant outlet 5 are connected to the electric motor 18 and/or the electric accumulator 19 whilst a second coolant inlet 4 , 4 ′ is connected to the radiator 14 .
- a temperature-regulated valve 21 is moreover provided which, at a limit temperature, opens a bypass 22 between the coolant outlet 5 and at least one second coolant inlet 4 , 4 ′.
- the coolant pump 1 according to the invention By means of the coolant pump 1 according to the invention and the motor vehicle 12 according to the invention, it is for the first time possible to form the coolant pump 1 and an associated valve device 6 as an extremely compact unit 16 , whereby considerable advantages in terms of installation space can be achieved.
Abstract
An electric coolant pump may include at least one first coolant inlet, at least one second coolant inlet, a coolant outlet, and a valve device. The valve device may be configured to, based on a selected operating point and a pressure in a coolant, at least one of open and close at least one of the at least one first coolant inlet and the at least one second coolant inlet. The valve device may be integrated in a body of the coolant pump.
Description
- This application claims priority to International Patent Application No. PCT/EP2017/077268 filed on Oct. 25, 2017, to German Patent Application No. DE 10 2017 200 874.1 filed on Jan. 19, 2017, and to German Patent Application No. DE 10 2016 222 307.0 filed on Nov. 14, 2016, the contents of each of which are hereby incorporated by reference in their entirety.
- The present invention relates to an electric coolant pump for delivering a coolant. The invention moreover relates to a motor vehicle having an internal combustion engine and such a coolant pump.
- In modern motor vehicles, a coolant pump is usually used for cooling an internal combustion engine, wherein the cooling power is usually controlled via a thermostat valve. Such a thermostat valve can open a bypass circumventing a radiator, for example when only a low cooling power is required. Such a thermostat valve often possesses an expansion element which enables comparatively simple temperature-dependent control.
- However, the coolant pumps known from the prior art are disadvantageous in that they often run at constantly high power and are controlled exclusively via a thermostat valve. A comparatively high amount of energy is thus needed to operate the coolant pump. A further and decisive disadvantage is that the known coolant pumps and the thermostat valves arranged separately therefrom need a comparatively large installation space.
- The present invention is therefore concerned with the problem of providing an improved or at least an alternative embodiment for an electric coolant pump, which, in particular, overcomes the disadvantages known from the prior art.
- According to the invention, this problem is solved by the subject mater of the independent claim(s). Advantageous embodiments are the subject matter of the dependent claims).
- The present invention is based on the general idea of integrating a valve device in a coolant pump and, at the same time, no longer operating this expensively under a constantly high load and therefore with a comparatively high amount of energy, but instead providing a plurality of power stages in the manner of operating points, wherein the valve device controls a coolant flow depending on the selected operating point of the coolant pump and the pressure generated by this in the process. The electric coolant pump according to the invention serves in a known manner for delivering a coolant, for example in the cooling circuit of an internal combustion engine, and is adjustable between a plurality of operating points. The electric coolant pump has at least one first coolant inlet, at least one second coolant inlet and a coolant outlet, as well as a valve device which is formed such that, depending on the selected operating point of the coolant pump and therefore the pressure p in the coolant, it opens or closes at least one first or second coolant inlet or simultaneously opens at least one first and second coolant inlet, wherein the valve device is integrated in the coolant pump and thus optimally arranged in terms of the installation space. In this case, it is particularly advantageous that the coolant pump and the valve device form a common unit or the valve device is integrated in the coolant pump. In particular, a particularly compact design can thus be achieved, which is highly advantageous in modern engine compartments and the limited spatial conditions associated therewith. Moreover, such a coolant pump can also be prefabricated externally and inserted into the motor vehicle as a fully pre-assembled unit, thereby resulting in assembly advantages.
- In a further advantageous embodiment of the solution according to the invention, in the first operating point, the coolant pump is switched off and at least one first coolant inlet is opened. In this case, the first operating point of the coolant pump is therefore synonymous with an off state. In this case, the first operating point is used in particular during a cold-start phase of the internal combustion engine, in which additional cooling of the internal combustion engine is not desired. A second operating point provides a greater delivery power and thus represents a comfort mode in which only an average cooling power of the internal combustion engine is required, which can also be achieved, for example, via a heat exchanger of an air-conditioning system of a motor vehicle. The third operating point of the cooling pump is represented by a cooling mode, for example, in which the valve device is set such that the coolant flow circulates via a radiator, the heat exchanger and the internal combustion engine. By selecting the operating points, the amount of energy to be used for this is considerably lower than in a coolant pump running constantly under full load, in which, during a cold-start phase, for example, the coolant flow is simply conducted past the radiator by a valve formed as a bypass valve.
- The valve device expediently has a valve body which, in the first and second operating point, assumes a first position, in which it blocks at least one second coolant inlet and uncovers at least one first coolant inlet. In this case, the second coolant inlet is connected to a radiator of the motor vehicle, whilst the first coolant inlet is connected, for example, to the heat exchanger of an air-conditioning system of the motor vehicle. In the second operating point, and therefore in the first position of the valve body, in which only an average cooling power is required, the coolant flow is therefore not conducted via a radiator of the motor vehicle. Additionally or alternatively, it can be provided that the valve device has a valve body which, in the third operating point, assumes a second position, in which it uncovers at least one first coolant inlet and at least one second coolant inlet. In the third operating point of the coolant pump, and therefore in the second position of the valve body, this therefore brings about a coolant flow which circulates via a vehicle radiator, a heat exchanger and the internal combustion engine. In this case, the valve body assumes the second position solely as a result of the increased coolant pressure in the third operating point. In the fourth operating point, the valve body assumes a third position, in which it blocks at least one first coolant inlet and uncovers a second coolant inlet.
- In a further advantageous embodiment of the solution according to the invention, a spring device is provided, which prestresses the valve body in its first position. To adjust the valve body between its first and second position, the coolant pressure must therefore increase, which is usually only achieved if the coolant pump is adjusted from its second operating point to its third operating point. In this case, the coolant pressure p2, p3 counteracts the pressure PF applied by the spring device.
- A temperature sensor and a control device communicatively connected thereto are expediently provided for controlling the operating points and therefore the power of the coolant pump depending on the temperature of the coolant. To enable the respective operating point of the coolant pump to be selected, it is necessary to determine a cooling requirement, which is possible via the temperature sensor provided according to the invention and the control device communicatively connected thereto according to the invention. Below a particular coolant temperature, for example during a cold-start phase of the internal combustion engine, cooling of the coolant and therefore cooling of the internal combustion engine are not desired, so that, in this case, the control device adjusts the coolant pump to its first operating point, i.e. switches it off or allows it to be switched off, for example. If the temperature of the coolant increases, the control device can detect this via the temperature sensor and, according to a characteristic map, for example, adjusts the coolant pump to its second operating point, in which an average cooling power is achieved. If the load on the internal combustion engine increases significantly, for example when driving uphill, the temperature of the coolant also increases, whereupon the control device adjusts the coolant pump to its third operating point, in which the coolant flow is conducted via the heat exchanger and the radiator and not, as in the second operating point, exclusively via a heat exchanger of an air-conditioning system of the motor vehicle, for example, and thus generates a considerably higher cooling power for cooling the internal combustion engine. If the load on the internal combustion engine increases further, then the temperature of the coolant also increases, whereupon the control device adjusts the coolant pump to its fourth operating point, in which the coolant flow is conducted exclusively via the radiator and not, as in the third operating point, additionally via the heat exchanger of the air-conditioning system of the motor vehicle. Therefore, a temperature-dependent control of the operating points of the coolant pump is also possible via the temperature sensor and the control device communicatively connected thereto.
- The present invention is further based on the general idea of equipping a motor vehicle with an internal combustion engine, a radiator, a heat exchanger, an air-conditioning system and a coolant pump described above, wherein at least one first coolant inlet and the coolant outlet are connected to the internal combustion engine, whilst at least one second coolant inlet is connected to the radiator. Such a motor vehicle according to the invention requires considerably less electrical energy to operate the coolant pump than is the case in the hitherto constantly running coolant pumps. However, not only can electrical energy be saved thereby, but also fuel.
- Further important features and advantages of the invention are revealed in the subclaims, in the drawings and in the associated description of the figures with reference to the drawings.
- Or course, the features mentioned above and those still to be explained below can be applied not only in the combination described in each case but also in other combinations or in isolation, without deviating from the scope of the present invention.
- Preferred exemplary embodiments of the invention are illustrated in the drawings and will be explained in more detail in the description below, wherein identical reference signs relate to identical or similar or functionally identical components.
- The drawings show, in each case schematically:
-
FIG. 1 —shows a partly sectional coolant pump according to the invention, having a valve device with a valve body located in the first position, -
FIG. 2 —shows an illustration as inFIG. 1 , but with the valve body located in its third position, -
FIG. 3 —shows an exploded illustration of the coolant pump according to the invention with a valve device, -
FIG. 4 —shows a schematic diagram of an installation situation of the coolant pump according to the invention in a motor vehicle according to the invention, -
FIG. 5 —shows an illustration as inFIG. 4 , but with a third coolant inlet in the coolant pump. - According to
FIGS. 1 to 5 , an electric coolant pump 1 according to the invention for delivering acoolant 2 has at least one first coolant inlet 3, 3′, at least one second coolant inlet 4, 4′ and acoolant outlet 5. In this case, the coolant pump 1 according to the invention is adjustable between a plurality of operating points, in particular between a first, a second, a third and a fourth operating point. In addition, the coolant pump 1 according to the invention has a valve device 6, which is integrated in the coolant pump 1 and which is formed such that, depending on the selected operating point of the coolant pump 1 and therefore the coolant pressure p, opens or closes the at least one first or second coolant inlet 3, 3′, 4, 4′ or simultaneously opens at least one first and second coolant inlet 3, 3′, 4, 4′. - As can be seen in
FIGS. 1, 2, and 4 , the coolant pump 1 according to the invention and the valve device 6 form a common unit 16 which, compared to hitherto used coolant pumps with thermostat valves arranged separately therefrom, is considerably compacter in design and thus offers considerable advantages in terms of installation space. - In this case, a first operating point of the coolant pump 1 according to the invention has, for example, a delivery power of 0 l/min and a pressure p1 of 0 bar. In this state, i.e. in the first operating point, delivery of
coolant 2 through the coolant pump 1 does not take place, so that this is switched off, for example. A second operating point of the coolant pump 1 has, for example, a delivery power of ca. 125 l/min and a pressure p2 of ca. 0.4 bar, whereas a third operating point has, for example, a delivery power of ca. 220 l/min and a pressure p3 of ca. 1.4 bar. - The pressures in the respective operating points are achieved by a corresponding rotational speed of the coolant pump 1, so that, in the second operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3, 3′ is opened and at least one second coolant inlet 4, 4′ is closed, wherein, in the third operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3, 3′ and at least one second coolant inlet 4, 4′ are opened, and wherein, in a fourth operating point, the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3, 3′ is closed and at least one second coolant inlet 4, 4′ is opened.
- With regard to the construction of the valve device 6 according to the invention, reference is made below to
FIGS. 1 to 3 , from which it can be seen that the valve device 6 possesses a valve body 7 which, in this case, is formed as an adjustable valve piston 8 and which, in the first and second operating point, assumes a first position (c.f.FIGS. 1 and 4 ), in which it blocks at least one second coolant inlet 4, 4′ and uncovers at least one first coolant inlet 3, 3′. In the third operating point, on the other hand, the valve body 7 assumes a second position, in which it uncovers at least one first coolant inlet 3, 3′ and at least one second coolant inlet 4, 4′. In the fourth operating point, the valve body 7 assumes a third position, in which it blocks at least one first coolant inlet 3, 3′ and uncovers a second coolant inlet 4, 4′ (c.f.FIG. 2 ). Moreover, aspring device 9, for example a simple helical spring, is provided, which prestresses the valve body 7 in its first position, in which at least one second coolant inlet 4, 4′ is blocked. In this case, thespring device 9 exerts a force on the valve body 7 which, in relation to the surface thereof, corresponds to a pressure pF. Atemperature sensor 10 and acontrol device 11 communicatively connected thereto can likewise be provided for controlling the operating points of the coolant pump 1 depending on the temperature of thecoolant 2. In this case, the valve device 6 is continuously adjustable depending on the rotational speed of the coolant pump 1. In this case, it is, of course, also alternatively conceivable that, instead of the valve body 7 formed as a valve piston 8, the valve device 6 according to the invention can also have other valve bodies 7, so that the valve device 6 can also be formed as a ball valve or as a disk valve, for example. - The valve piston 8 illustrated according to
FIG. 3 possessesleakage openings 17 for pressure equalization. - Observation of
FIG. 4 now shows amotor vehicle 12 having aninternal combustion engine 13, aradiator 14, aheat exchanger 15 in an air-conditioning system which is not otherwise illustrated, and having a coolant pump 1 according to the passages above. In this case, a first coolant inlet 3, 3′ of the coolant pump 1, like thecoolant outlet 5, is connected to theinternal combustion engine 13, whilst a second coolant inlet 4, 4′ is connected to theradiator 14. - In this case, in terms of controlling a
coolant flow 2, the coolant pump 1 according to the invention functions as follows: - Cooling of the
internal combustion engine 13 is not required or desired upon a cold start thereof in order to accelerate the heating of theinternal combustion engine 13 and therefore achieve a more rapid lowering of emissions. During this cold-start phase, the coolant pump 1 is located in its first operating point, in which it does not bring about a build-up of pressure and does not delivercoolant 2 and is therefore switched off. If the temperature of thecoolant 2 increases, this is detected via thetemperature sensor 10, for example, which, in the present case according toFIG. 1 , is arranged in the region of the coolant pump 1, but can, of course, additionally or alternatively also be positioned at another point in the coolant system. If the temperature of thecoolant 2 reaches a certain value, thecontrol device 11 connected to thetemperature sensor 10 adjusts the coolant pump 1 to its second operating point, in which at least one second coolant inlet 4, 4′ is still closed and a coolant flow circulates exclusively via theinternal combustion engine 13 and, for example, theheat exchanger 15 of the air-conditioning system of themotor vehicle 12. Also, in this case, only moderate cooling of theinternal combustion engine 13 is required in this second operating point. The pressure p2 of thecoolant 2 generated in the second operating point is lower than the pressure pF acting on the valve body 7 by means of thespring device 9, so that thespring device 9 prestresses the valve body 7 in its first position in opposition to the coolant pressure p2. - If the temperature of the
coolant 2 increases further, this is likewise detected by thetemperature sensor 10 and, upon reaching a further limit value, results in thecontrol device 11 adjusting the coolant pump 1 to its third operating point, in which both the delivery power of the coolant pump 1 and also the pressure p3 generated thereby in thecoolant 2 increase significantly. This results in the coolant pressure p3 being greater than the pressure pF applied by thespring device 9 so that, in the third operating point, the valve body 7 is adjusted to the right according toFIG. 2 , thespring device 9 is compressed and simultaneously uncovers at least one second coolant inlet 4, 4′, whereby the coolant flow now circulates via theinternal combustion engine 13 and theradiator 14 and via the coolant pump 1 back to theinternal combustion engine 13. However, some of thecoolant flow 2 still flows via theheat exchanger 15. In this case, the maximum cooling power is also produced in the fourth operating point since the coolant pump 1 has a rotational speed in which at least one first coolant inlet 3, 3′ is closed and at least one second coolant inlet 4, 4′ is opened. In the fourth operating point, the valve body 7 takes assumes its third position, in which it blocks at least one first coolant inlet 3, 3′ and uncovers a second coolant inlet 4, 4′ so that all of thecoolant flow 2 flows via theinternal combustion engine 13 and theradiator 14. - Observation of
FIG. 5 shows that themotor vehicle 12 has an electric motor 18 and an electrical energy accumulator 19, wherein at least onethird coolant inlet 20 is connected to the electric motor 18 and/or the electrical energy accumulator 19. In this case, it is conceivable that thethird coolant inlet 20 and thecoolant outlet 5 are connected to the electric motor 18 and/or the electric accumulator 19 whilst a second coolant inlet 4, 4′ is connected to theradiator 14. - In
FIG. 5 , a temperature-regulatedvalve 21 is moreover provided which, at a limit temperature, opens a bypass 22 between thecoolant outlet 5 and at least one second coolant inlet 4, 4′. - By means of the coolant pump 1 according to the invention and the
motor vehicle 12 according to the invention, it is for the first time possible to form the coolant pump 1 and an associated valve device 6 as an extremely compact unit 16, whereby considerable advantages in terms of installation space can be achieved.
Claims (20)
1. An electric coolant pump comprising:
at least one first coolant inlet, at least one second coolant inlet, and a coolant outlet; and
a valve device configured to, based on a selected operating point and a pressure in a coolant, at least one of open and close at least one of the at least one first coolant inlet and the at least one second coolant inlet;
wherein the valve device is integrated in a body of the coolant pump.
2. The coolant pump as claimed in claim 1 , wherein, in a first operating point, the coolant pump is switched off and the at least one first coolant inlet is open.
3. The coolant pump as claimed in claim 2 , wherein:
in a second operating point, the coolant pump has a rotational speed at which the at least one first coolant inlet is open and the at least one second coolant inlet is closed;
in a third operating point, the coolant pump has a second rotational speed at which the at least one first coolant inlet and the at least one second coolant inlet are open; and
in a fourth operating point, the coolant pump has a third rotational speed at which the at least one first coolant inlet is closed and the at least one second coolant inlet is open.
4. The coolant pump as claimed in claim 3 , wherein the valve device includes a valve body, and wherein at least one of:
in the first operating point and the second operating point, the valve body is arranged in a first position, in which the valve body blocks the at least one second coolant inlet and uncovers the at least one first coolant inlet;
in the third operating point, the valve body is arranged in a second position, in which the valve body uncovers the at least one first coolant inlet and the at least one second coolant inlet; and
in the fourth operating point, the valve body is arranged in a third position, in which the valve body blocks the at least one first coolant inlet and uncovers the at least one second coolant inlet.
5. The coolant pump as claimed in claim 1 , wherein the valve device is continuously adjustable based on a rotational speed of the coolant pump.
6. The coolant pump as claimed in claim 4 , wherein the valve body is structured as a valve piston and is adjustable in a translatory manner.
7. The coolant pump as claimed in claim 4 , further comprising a spring device prestressing the valve body in the first position.
8. The coolant pump as claimed in claim 1 , further comprising a temperature sensor and a control device communicatively connected thereto configured to control a power of the coolant pump based on a temperature of the coolant.
9. A motor vehicle comprising an internal combustion engine, a radiator, a heat exchanger, and a coolant pump, the coolant pump including:
at least one first coolant inlet, at least one second coolant inlet, and a coolant outlet; and
a valve device configured to at least one of open and close at least one of the at least one first coolant inlet and the at least one second coolant inlet based on a selected operating point of the coolant pump and a pressure in a coolant, the valve device integrated in a body of the coolant pump;
wherein the at least one first coolant inlet and the coolant outlet are connected to the internal combustion engine, and the at least one second coolant inlet is connected to the radiator.
10. The motor vehicle as claimed in claim 9 , further comprising an electric motor and an electrical energy accumulator, wherein the coolant pump further includes at least one third coolant inlet connected to at least one of the electric motor and the electrical energy accumulator.
11. The motor vehicle as claimed in claim 10 , wherein the at least one third coolant inlet and the coolant outlet are connected to at least one of the electric motor and the electrical energy accumulator, and the at least one second coolant inlet is connected to the radiator.
12. The motor vehicle as claimed in claim 9 , further comprising a temperature-regulated valve which is configured to, at a limit temperature, open a bypass between the coolant outlet and the at least one second coolant inlet.
13. The motor vehicle as claimed in claim 9 , wherein:
in a first operating point of the coolant pump, the coolant pump is switched off and the at least one first coolant inlet is open;
in a second operating point of the coolant pump, the coolant pump has a rotational speed at which the at least one first coolant inlet is open and the at least one second coolant inlet is closed;
in a third operating point of the coolant pump, the coolant pump has a second rotational speed at which the at least one first coolant inlet and the at least one second coolant inlet are open; and
in a fourth operating point of the coolant pump, the coolant pump has a third rotational speed at which the at least one first coolant inlet is closed and the at least one second coolant inlet is open.
14. The motor vehicle as claimed in claim 13 , wherein the valve device includes a valve body, and wherein at least one of:
in the first operating point and the second operating point, the valve body is arranged in a first position, in which the valve body blocks the at least one second coolant inlet and uncovers the at least one first coolant inlet;
in the third operating point, the valve body is arranged in a second position, in which the valve body uncovers the at least one first coolant inlet and the at least one second coolant inlet; and
in the fourth operating point, the valve body is arranged in a third position, in which the valve body blocks the at least one first coolant inlet and uncovers the at least one second coolant inlet.
15. The motor vehicle as claimed in claim 9 , wherein the valve device is continuously adjustable based on a rotational speed of the coolant pump.
16. The motor vehicle as claimed in claim 14 , wherein the valve body is structured as a valve piston and is adjustable in a translatory manner.
17. The motor vehicle as claimed in claim 14 , further comprising a spring device prestressing the valve body in the first position.
18. The motor vehicle as claimed in claim 9 , further comprising a temperature sensor and a control device communicatively connected thereto configured to control a power of the coolant pump based on a temperature of the coolant.
19. An electric coolant pump comprising:
a plurality of first coolant inlets, a plurality of second coolant inlets, and a coolant outlet; and
a valve device configured to, based on a selected operating point and a pressure in a coolant, at least one of open and close at least one of i) at least one of the plurality of first coolant inlets and ii) at least one of the plurality of second coolant inlets;
wherein the valve device is integrated in a body of the coolant pump.
20. The coolant pump as claimed in claim 19 , wherein:
in a first operating point, the coolant pump is switched off and at least one of the plurality of first coolant inlets is open;
in a second operating point, the coolant pump has a rotational speed at which at least one of the plurality of first coolant inlets is open and at least one of the plurality of second coolant inlets is closed;
in a third operating point, the coolant pump has a second rotational speed at which at least one of the plurality of first coolant inlets and at least one of the plurality of second coolant inlets are open; and
in a fourth operating point, the coolant pump has a third rotational speed at which at least one of the plurality of first coolant inlets is closed and at least one of the plurality of second coolant inlets is open.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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DE102016222307 | 2016-11-14 | ||
DE102016222307.0 | 2016-11-14 | ||
DE102017200874.1A DE102017200874A1 (en) | 2016-11-14 | 2017-01-19 | Electric coolant pump |
DE102017200874.1 | 2017-01-19 | ||
PCT/EP2017/077268 WO2018086886A1 (en) | 2016-11-14 | 2017-10-25 | Electric coolant pump |
Publications (1)
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US20190345868A1 true US20190345868A1 (en) | 2019-11-14 |
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ID=62026387
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US16/349,598 Active US10865695B2 (en) | 2016-11-14 | 2017-10-23 | Motor vehicle |
US16/349,595 Active US11156146B2 (en) | 2016-11-14 | 2017-10-24 | Electric coolant pump |
US16/349,602 Abandoned US20190345868A1 (en) | 2016-11-14 | 2017-10-25 | Electric coolant pump |
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US16/349,598 Active US10865695B2 (en) | 2016-11-14 | 2017-10-23 | Motor vehicle |
US16/349,595 Active US11156146B2 (en) | 2016-11-14 | 2017-10-24 | Electric coolant pump |
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US (3) | US10865695B2 (en) |
CN (3) | CN109804146B (en) |
DE (3) | DE102017200876A1 (en) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190323413A1 (en) * | 2018-04-23 | 2019-10-24 | Hyundai Motor Company | Coolant pump for vehicle, cooling system provided with the same and control method for the same |
US20190345867A1 (en) * | 2016-11-14 | 2019-11-14 | Mahle International Gmbh | Motor vehicle |
US11401932B2 (en) * | 2018-12-20 | 2022-08-02 | Audi Ag | Screw pump with abradable coating |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017215984B4 (en) | 2017-09-11 | 2023-11-09 | Vitesco Technologies GmbH | Control module for air conditioning a battery |
DE102018207621B3 (en) | 2018-05-16 | 2019-08-08 | Ford Global Technologies, Llc | Control valve for a radiator circuit, arrangement with the control valve and method for controlling a fluid flow in the assembly |
DE102019206201B3 (en) * | 2019-04-30 | 2020-10-29 | Ford Global Technologies, Llc | Split cooling system for an internal combustion engine with several cooling circuits |
GB2587384B (en) * | 2019-09-26 | 2021-09-22 | Ford Global Tech Llc | Flow control devices for engine cooling systems |
CN114802561A (en) * | 2022-06-27 | 2022-07-29 | 赛格威科技有限公司 | Electric motorcycle and heat dissipation method thereof |
DE102022210905A1 (en) | 2022-10-14 | 2024-04-25 | Zf Friedrichshafen Ag | Supply module housing for a vehicle, supply module for a vehicle and vehicle |
DE102022210903A1 (en) | 2022-10-14 | 2024-04-25 | Zf Friedrichshafen Ag | Distribution module for a thermal management system, system comprising a heat pump with a distribution module, and vehicle |
Family Cites Families (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2220130A1 (en) * | 1971-05-04 | 1972-11-16 | Simmering-Graz-Pauker AG für Maschinen-, Kessel und Waggonbau, Wien | Disc brakes for rail vehicles |
US4244389A (en) * | 1978-09-08 | 1981-01-13 | Jidoshakiki Co., Ltd. | Flow control valve |
JPS58146168U (en) * | 1982-03-26 | 1983-10-01 | 自動車機器株式会社 | flow control valve |
DE3435833A1 (en) * | 1984-09-28 | 1986-04-10 | Bayerische Motoren Werke AG, 8000 München | Control device for the liquid cooling circuit of internal combustion engines |
JPS639622A (en) * | 1986-06-30 | 1988-01-16 | Fuji Heavy Ind Ltd | Cooling device of engine |
GB2240169B (en) * | 1990-01-17 | 1993-06-02 | Ferranti Int Plc | Closed circuit cooling system |
JP2712711B2 (en) * | 1990-02-16 | 1998-02-16 | 株式会社デンソー | Method and apparatus for cooling internal combustion engine |
JP2522121Y2 (en) * | 1990-03-29 | 1997-01-08 | 自動車機器株式会社 | Flow control valve device |
JP2562489Y2 (en) * | 1991-07-03 | 1998-02-10 | 株式会社ユニシアジェックス | Flow control valve |
JP3050690B2 (en) * | 1992-03-09 | 2000-06-12 | 株式会社デンソー | Electromagnetic drive control valve |
DE4324178A1 (en) * | 1993-07-19 | 1995-01-26 | Bayerische Motoren Werke Ag | Cooling system for an internal combustion engine of a motor vehicle with a thermostatic valve that contains an electrically heated expansion element |
DE4330215A1 (en) * | 1993-09-07 | 1995-03-09 | Behr Thomson Dehnstoffregler | Cooling system for an internal combustion engine of a motor vehicle with a valve |
DE19539604A1 (en) * | 1995-10-25 | 1997-04-30 | Pierburg Ag | Cooling system for vehicle internal combustion engine |
GB2310923B (en) * | 1996-03-06 | 2000-05-24 | Rover Group | Vehicle engine cooling system |
IT1291190B1 (en) * | 1997-03-13 | 1998-12-29 | Gate Spa | Cooling system for an internal combustion engine, particularly for motor vehicles |
GB9723466D0 (en) * | 1997-11-07 | 1998-01-07 | Lucas Ind Plc | Fluid flow valve and fluid flow system |
ITTO980371A1 (en) | 1998-04-30 | 1999-10-30 | Gate Spa | PUMP FOR LIQUIDS, PARTICULARLY FOR A COOLING CIRCUIT OF AN INTERNAL COMBUSTION ENGINE. |
DE19831901A1 (en) | 1998-07-16 | 2000-01-20 | Bosch Gmbh Robert | Vehicle engine cooling system with second pump forming active element |
DE10023519A1 (en) * | 2000-05-13 | 2002-01-03 | Zahnradfabrik Friedrichshafen | Cooling system for vehicles |
CN1365216A (en) * | 2000-12-18 | 2002-08-21 | 扎尔林克半导体V.N.股份有限公司 | High speed fubber managing system of exchanging data base |
JP2003003846A (en) * | 2001-06-21 | 2003-01-08 | Aisan Ind Co Ltd | Engine cooling device |
JP3978395B2 (en) * | 2002-01-23 | 2007-09-19 | 愛三工業株式会社 | Flow control valve |
US6539899B1 (en) * | 2002-02-11 | 2003-04-01 | Visteon Global Technologies, Inc. | Rotary valve for single-point coolant diversion in engine cooling system |
DE10207653C1 (en) * | 2002-02-22 | 2003-09-25 | Gpm Geraete Und Pumpenbau Gmbh | Electric coolant pump with integrated valve, and method for controlling it |
JP2004263587A (en) * | 2003-02-28 | 2004-09-24 | Aisin Seiki Co Ltd | Cooling device of vehicle |
GB0310120D0 (en) * | 2003-05-02 | 2003-06-04 | Ford Global Tech Llc | Engine cooling systems |
DE10332949A1 (en) * | 2003-07-19 | 2005-02-10 | Daimlerchrysler Ag | Device for cooling and preheating |
DE10332947A1 (en) * | 2003-07-19 | 2005-02-03 | Daimlerchrysler Ag | Internal combustion engine for a motor vehicle |
JP2006029113A (en) * | 2004-07-12 | 2006-02-02 | Denso Corp | Cooling water flow control valve |
US7237511B2 (en) * | 2005-03-25 | 2007-07-03 | Mazda Motor Corporation | Cooling device of engine |
DE102005048286B4 (en) * | 2005-10-08 | 2007-07-19 | Itw Automotive Products Gmbh & Co. Kg | Method for operating a cooling system for an internal combustion engine |
DE102007033146B4 (en) * | 2007-07-13 | 2012-02-02 | Schwäbische Hüttenwerke Automotive GmbH & Co. KG | Adjustment valve for adjusting the delivery volume of a positive displacement pump |
US8128378B2 (en) * | 2007-07-30 | 2012-03-06 | Honeywell International Inc. | Dual mode compensation for variable displacement pump fluid metering system |
JP4384230B2 (en) * | 2008-03-19 | 2009-12-16 | ダイハツ工業株式会社 | Engine cooling system |
KR101013970B1 (en) * | 2008-11-18 | 2011-02-14 | 기아자동차주식회사 | Fluidic circuit of engine |
DE102009007695A1 (en) * | 2009-02-05 | 2010-08-12 | Mahle International Gmbh | Cooling system in a motor vehicle |
DE102009014050A1 (en) * | 2009-03-19 | 2010-09-23 | Schaeffler Technologies Gmbh & Co. Kg | Heat management module for cooling system of internal combustion engine, has supply connection for cooling water of bypass cycle, where supply connection is arranged at valve housing |
US8689742B2 (en) * | 2009-11-24 | 2014-04-08 | Hyundai Motor Company | Integrated coolant flow control and heat exchanger device |
KR101509685B1 (en) * | 2009-12-02 | 2015-04-06 | 현대자동차 주식회사 | Exhaust heat recovery system of vehicle and method |
JP5039803B2 (en) * | 2010-03-04 | 2012-10-03 | 日本サーモスタット株式会社 | Cooling device for internal combustion engine |
JP5626606B2 (en) * | 2010-11-12 | 2014-11-19 | アイシン精機株式会社 | Control valve |
US8459389B2 (en) * | 2010-12-30 | 2013-06-11 | Hyundai Motor Company | Integrated pump, coolant flow control and heat exchange device |
GB2489016B (en) * | 2011-03-16 | 2013-08-21 | Land Rover Uk Ltd | Hybrid electric vehicle cooling circuit and method of cooling |
US8707927B2 (en) * | 2011-07-20 | 2014-04-29 | GM Global Technology Operations LLC | Oil squirter |
DE102012207387A1 (en) * | 2011-07-27 | 2013-01-31 | Mahle International Gmbh | Cooling device for internal combustion engine in motor car, has pressure relief valve arranged over pressure side of secondary pump and inserted along direction of cooling circuit when reaching pre-defined pressure |
JP5578373B2 (en) * | 2011-11-04 | 2014-08-27 | アイシン精機株式会社 | Vehicle coolant control valve |
JP6023430B2 (en) * | 2012-01-17 | 2016-11-09 | カルソニックカンセイ株式会社 | Water-cooled engine cooling system |
JP6013022B2 (en) * | 2012-05-14 | 2016-10-25 | 日産自動車株式会社 | Cooling control device for internal combustion engine and cooling control method therefor |
GB201209680D0 (en) * | 2012-05-31 | 2012-07-18 | Jaguar Cars | Fluid flow control device and method |
JP5914176B2 (en) * | 2012-05-31 | 2016-05-11 | 株式会社ミクニ | Rotary valve |
CN105745450B (en) * | 2013-11-16 | 2017-10-24 | 博泽沃尔兹堡汽车零部件有限公司 | Electronic cooling medium pump |
DE102013019299B4 (en) * | 2013-11-16 | 2017-10-12 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electromotive coolant pump with arranged in the pump housing and actuated by the coolant Stellaktor |
DE102013224005A1 (en) * | 2013-11-25 | 2015-05-28 | Volkswagen Aktiengesellschaft | cooling system |
GB2523393A (en) * | 2014-02-24 | 2015-08-26 | Gm Global Tech Operations Inc | A valve for controlling piston cooling jets in an internal combustion engine |
GB2536249B (en) * | 2015-03-10 | 2017-11-08 | Jaguar Land Rover Ltd | Controller for a motor vehicle cooling system and method |
EP3073161B1 (en) * | 2015-03-25 | 2018-08-01 | Magna Powertrain Inc. | Multiport valve with modular rotor |
DE102015215774A1 (en) * | 2015-08-19 | 2017-02-23 | Mahle International Gmbh | Pressure and temperature controlled valve in an oil circuit of an internal combustion engine |
CN108368950B (en) * | 2015-10-02 | 2019-08-23 | 康卓(马克多夫)有限公司 | Cooling circuit for cooling down engine is arranged and method |
DE102017200876A1 (en) * | 2016-11-14 | 2018-05-17 | Mahle International Gmbh | Electric coolant pump |
-
2017
- 2017-01-19 DE DE102017200876.8A patent/DE102017200876A1/en not_active Withdrawn
- 2017-01-19 DE DE102017200878.4A patent/DE102017200878A1/en not_active Withdrawn
- 2017-01-19 DE DE102017200874.1A patent/DE102017200874A1/en not_active Withdrawn
- 2017-10-23 CN CN201780060288.3A patent/CN109804146B/en active Active
- 2017-10-23 US US16/349,598 patent/US10865695B2/en active Active
- 2017-10-23 WO PCT/EP2017/077012 patent/WO2018086851A1/en active Application Filing
- 2017-10-24 CN CN201780061804.4A patent/CN109844277B/en active Active
- 2017-10-24 US US16/349,595 patent/US11156146B2/en active Active
- 2017-10-24 WO PCT/EP2017/077191 patent/WO2018086878A1/en active Application Filing
- 2017-10-25 WO PCT/EP2017/077268 patent/WO2018086886A1/en active Application Filing
- 2017-10-25 CN CN201780059302.8A patent/CN109790773B/en active Active
- 2017-10-25 US US16/349,602 patent/US20190345868A1/en not_active Abandoned
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190345867A1 (en) * | 2016-11-14 | 2019-11-14 | Mahle International Gmbh | Motor vehicle |
US10865695B2 (en) * | 2016-11-14 | 2020-12-15 | Mahle International Gmbh | Motor vehicle |
US20190323413A1 (en) * | 2018-04-23 | 2019-10-24 | Hyundai Motor Company | Coolant pump for vehicle, cooling system provided with the same and control method for the same |
US10794260B2 (en) * | 2018-04-23 | 2020-10-06 | Hyundai Motor Company | Coolant pump for vehicle, cooling system provided with the same and control method for the same |
US11401932B2 (en) * | 2018-12-20 | 2022-08-02 | Audi Ag | Screw pump with abradable coating |
Also Published As
Publication number | Publication date |
---|---|
CN109804146B (en) | 2021-02-09 |
US10865695B2 (en) | 2020-12-15 |
WO2018086878A1 (en) | 2018-05-17 |
CN109844277A (en) | 2019-06-04 |
US20190345867A1 (en) | 2019-11-14 |
CN109844277B (en) | 2021-08-20 |
US11156146B2 (en) | 2021-10-26 |
WO2018086886A1 (en) | 2018-05-17 |
DE102017200874A1 (en) | 2018-05-17 |
US20190277183A1 (en) | 2019-09-12 |
CN109804146A (en) | 2019-05-24 |
DE102017200878A1 (en) | 2018-05-17 |
WO2018086851A1 (en) | 2018-05-17 |
CN109790773A (en) | 2019-05-21 |
CN109790773B (en) | 2021-08-10 |
DE102017200876A1 (en) | 2018-05-17 |
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