EP3899281A1 - Antriebseinrichtung für ein kraftfahrzeug - Google Patents
Antriebseinrichtung für ein kraftfahrzeugInfo
- Publication number
- EP3899281A1 EP3899281A1 EP19816301.6A EP19816301A EP3899281A1 EP 3899281 A1 EP3899281 A1 EP 3899281A1 EP 19816301 A EP19816301 A EP 19816301A EP 3899281 A1 EP3899281 A1 EP 3899281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- drive
- spindle
- drive device
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002826 coolant Substances 0.000 claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 29
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F01P2050/00—Applications
- F01P2050/24—Hybrid vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
Definitions
- the invention relates to a drive device for a motor vehicle, with at least one drive unit and a coolant circuit for the temperature of the at least one drive unit, wherein in the coolant circuit at least one coolant pump for circulating a water-containing coolant is arranged in the coolant circuit.
- the document DE 10 2010 011 477 A1 is known from the prior art.
- This relates to an internal combustion engine with dry sump lubrication, which comprises a cylinder crankcase and an oil pump driven by the internal combustion engine with at least one suction pump stage and a pressure pump stage, the at least one suction pump stage and the pressure pump stage being arranged within the cylinder crankcase housing in a common pump housing.
- the pump housing be an integral part of an oil pan or a lower part of the cylinder crankcase.
- the coolant pump is designed as a screw pump.
- the drive device is used to drive the motor vehicle, in so far as the provision of a drive torque aimed at driving the motor vehicle.
- the drive torque is generated with the aid of the drive unit, the drive unit being designed, for example, as an internal combustion engine or — preferably — as an electrical machine or having one.
- the drive unit can additionally or alternatively have a fuel cell.
- the drive unit is a heat-generating drive unit, so that during operation of the drive device, heat is generated in or on the drive unit, which heat must be dissipated by the drive unit.
- the heat can also be removed additionally or alternatively. If both the removal and the supply of heat are provided, this can be referred to as tempering. If in the context of this description one speaks of dissipating heat, this always represents a dissipation and / or supply of heat or, generally speaking, tempering.
- the temperature of the heat is in particular such that a temperature of the drive unit adjusts to or falls below an operating temperature of the drive unit.
- the temperature of the drive unit is preferably regulated to its operating temperature.
- the heat is removed and / or supplied with the aid of the coolant circuit or by means of the coolant which is present in the coolant circuit and contains water.
- the coolant circuit is preferably set such that it provides a cooling capacity for cooling the drive unit, which keeps the temperature of the drive unit at or below the operating temperature.
- the cooling capacity of the coolant circuit is brought about by adjusting the coolant pump, for example by adjusting the speed of the coolant pump.
- the cooling capacity of the coolant circuit usually increases with the speed of the coolant pump, at least when the boundary conditions remain the same.
- cooling power in the context of this description, it should be pointed out that this term is understood to mean the power of the coolant circuit, regardless of whether it is used for removing or supplying heat. Instead of the term cooling capacity, it is more general to speak of temperature control capacity.
- the coolant pump should be in the form of a screw pump.
- a screw pump works on the displacement principle or is available as a displacement pump.
- a high dynamic of the coolant circuit is achieved in comparison with other types of pumps, for example flow pumps, which are usually used in this area.
- the coolant circuit can be set to a changed operating point of the drive unit by changing the speed of the coolant pump much more quickly than is the case with other types of pumps.
- screw pump offers a higher efficiency compared to the other pump types and has very good acoustic behavior.
- Screw pumps have so far not been used as coolant pumps, among other things because weaknesses have weaknesses in the normal operating areas of normal drive devices. Screw pumps are less suitable for high volume flows and low counter pressures, such as those that occur in coolant circuits of internal combustion engines. That is why centrifugal pumps have so far been mainly used there.
- the screw pump is also outstandingly suitable for circulating the water-containing coolant, wherein at the same time, the advantages mentioned over other types of pumps can be realized.
- the screw pump also has the advantage that a flow direction can be easily reversed. It can therefore be provided that the screw pump is operated at times with a first flow direction or delivery direction and at times with a second flow direction or delivery direction opposite the first flow direction.
- the reversal of the flow direction is achieved, for example, by reversing the direction of rotation in a simple manner.
- the described coolant circuit can only be used several times in the context of the drive device.
- the drive device either has exactly one coolant circuit as described or, alternatively, several.
- the multiple coolant circuits can be used to cool different drive units. It is also possible that one of the coolant circuits is used for cooling the drive unit and at least one other of the coolant circuits for cooling an additional unit, which is necessary for operating the drive unit.
- the additional unit can be designed as a fuel cell, energy store, voltage converter, control device, inverter, in particular pulse-controlled inverter or the like, which are electrically connected to the electrical machine and are used to operate it.
- the coolant pump has a drive spindle coupled to a drive and at least one drive spindle which interacts with the drive spindle for circulating the coolant.
- the drive spindle is coupled to the drive, for example rigid and permanent or switchable via a clutch.
- the drive unit itself serves as the drive, the drive spindle being mechanically coupled to the drive unit or at least capable of being coupled.
- the drive spindle can be coupled to an electric motor, preferably rigid and permanent, which also represents the drive or is present in addition to it.
- the drive spindle meshes with at least one running spindle to circulate the coolant.
- a single Laufspin del is part of the screw pump.
- axes of rotation of the plurality of running spindles and the drive spindle preferably lie in a common plane.
- the drive unit has at least one of the following devices or is designed as such: internal combustion engine, electrical machine and fuel cell.
- the drive unit serves to provide the drive torque, either directly or indirectly.
- the immediate provision can take place, for example, with the aid of the internal combustion engine or the electrical machine, whereas the indirect provision can be made using the fuel cell.
- the fuel cell is preferably used to provide electrical energy, which is subsequently used to operate an electrical machine in order to generate the drive torque.
- the drive unit can include both the electric machine and the fuel cell.
- An embodiment of the drive unit in which probably the internal combustion engine as well as the electrical machine are conceivable.
- the drive unit is available as a hybrid drive unit. Such a configuration of the drive device can be used extremely flexibly.
- the coolant circuit can also be used for cooling or tempering at least one or more of the following devices: energy storage, in particular high-voltage battery, voltage converter, control device and inverter, in particular pulse-controlled inverter. Additionally or alternatively, the coolant circuit can be used to cool charge air.
- the coolant pump has an outlet pressure of at most 10 bar, at most 7.5 bar or at most 5 bar.
- the outlet pressure is to be understood as the pressure which is present at a coolant outlet of the coolant pump.
- the outlet pressure corresponds to the pressure on a pressure side of the coolant pump.
- the outlet pressure is preferably the highest pressure present in the coolant circuit.
- the coolant pump is provided and designed for a comparatively low outlet pressure.
- the initial pressure should not exceed 10 bar or less.
- the outlet pressure is particularly preferably less than 5 bar, for example at most 4 bar or at most 3 bar.
- An outlet pressure of at most 2.5 bar or at most 2 bar can also be provided.
- Such a low output pressure can surprisingly be realized well with the help of the screw pump, the design of the coolant pump as a screw pump allowing considerable energy savings due to its high efficiency.
- the outlet pressure is at least 1.5 bar, at least 2 bar or more.
- At least one or exactly one of the following spindles has a coating: drive spindle and running spindle.
- the drive spindle and / or the running spindle has the coating.
- the coating is particularly preferably applied to only part of the spindles, in particular to exactly one of the spindles. If there is only exactly one spindle, the coating can either be on the drive spindle or the spindle. If there are several running spindles, the drive spindle preferably has only the coating.
- the coating is particularly preferably designed such that it is transferred from the coating to the spindle to the other spindle or the other spindles during operation of the coolant pump.
- the coating is thus released from the spindle pointing the coating to the other spindle or the other spindles.
- the coating can pass from the respective spindle to a housing of the coolant pump. Providing the coating for only a part of the spindles or exactly one of the spindles prevents the spindles from jamming with one another and / or with the housing, which could otherwise occur due to narrow tolerances. With the help of the coating, an extremely durable screw pump can be realized that is well protected against corrosion.
- a further embodiment of the invention provides that the coating is applied to a base body of the spindle such that the spindle is designed with a transition fit or clearance fit to a housing of the coolant pump, in which the spindle is rotatably mounted.
- the spindle has both the base body and the coating applied to the base body.
- the base body is designed with un dimension or with a transition fit to the housing.
- the coating is applied to the base body in such a way that the spindle remains overall with a transition fit or clearance fit to the housing. In the case of the transition fit in particular, this means that when the coolant pump is operated, the spindle, in particular the coating, is abraded at least initially.
- the coating is particularly preferably applied to the base body with a thickness or layer thickness such that at least part of the coating remains on the base body after the spindle has run in.
- an embodiment of the base body with an undersize to the housing is particularly preferred.
- the coating is preferably applied to the base body with a low tolerance, in particular with regard to roundness and cylindrical shape. Additionally or alternatively, it can have a very small layer thickness, in particular a layer thickness of at most 10 pm, at most 1 pm or less. Due to the abrasion of the coating during the running-in of the coolant pump, particularly small tolerances of the coolant pump and thus a particularly high efficiency or delivery rate are achieved.
- the base body consists of plastic or metal or has plastic or metal.
- the base body can consist of either plastic or metal. However, it can also be provided that it only identifies or contains plastic or metal. In this case, for example, the main body consists for the most part, that is to say more than 50%, of the plastic or metal.
- an embodiment of the base body made of plastic is particularly preferred. Basically, a corrosion-resistant material is preferred, which is permanently resistant to the coolant.
- a corrosion-resistant material is also preferably used for the housing, for example the same material as for the base body.
- the housing can, however, consist of a different material.
- the coating consists of carbon or has carbon.
- the coating is in the form of amorphous carbon, especially diamond-like carbon (DLC).
- DLC diamond-like carbon
- the coating is particularly preferred applied to the base body by vapor deposition.
- the carbon coating enables the coolant pump to have a particularly long service life.
- the coating also reduces friction, resulting in higher efficiency.
- the coolant predominantly contains water.
- the coolant consists of at least 50% water.
- the proportion of water in the coolant particularly preferably corresponds to at least 90% or at least 99%.
- the rest of the coolant is preferably composed of at least one additive and unavoidable impurities, the impurities having a share of at most 1% in the coolant.
- Water is characterized by a particularly high heat capacity and thus a particularly high cooling effect.
- At least one additive in particular glycol, is added to the water.
- the additive is used in particular for lubrication of the coolant pump, the production of frost protection of the coolant and / or for the implementation of corrosion protection.
- Figure is a schematic representation of a drive device for a
- the figure shows a very schematic representation of a drive device
- the drive device 1 for a motor vehicle.
- the drive device 1 has a drive unit
- the coolant circuit 3 has a cooler 4, that is to say finally a heat exchanger, and also a coolant pump 5 for circulating a water-containing coolant in the coolant circuit 3.
- the coolant pump 5 in the context of the drive devices 1 shown here is designed as a screw pump.
- Such a pump has numerous advantages over other pump types, in particular it works according to the displacement principle, so that a high dynamic of the coolant circuit 3 can be achieved. In addition, it has a very high degree of efficiency and extremely good acoustic behavior. Surprisingly, these advantages can also be realized in the context of the coolant circuit 3 presented here. Screw pumps have not yet been used for such coolant circuits 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018222516.8A DE102018222516A1 (de) | 2018-12-20 | 2018-12-20 | Antriebseinrichtung für ein Kraftfahrzeug |
PCT/EP2019/083763 WO2020126515A1 (de) | 2018-12-20 | 2019-12-05 | Antriebseinrichtung für ein kraftfahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3899281A1 true EP3899281A1 (de) | 2021-10-27 |
EP3899281B1 EP3899281B1 (de) | 2023-03-08 |
Family
ID=68806772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19816301.6A Active EP3899281B1 (de) | 2018-12-20 | 2019-12-05 | Antriebseinrichtung für ein kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US11401932B2 (de) |
EP (1) | EP3899281B1 (de) |
CN (1) | CN114026327A (de) |
DE (1) | DE102018222516A1 (de) |
WO (1) | WO2020126515A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019118086A1 (de) * | 2019-07-04 | 2021-01-07 | Nidec Gpm Gmbh | Integrierte Schraubenspindel-Kühlmittelpumpe |
EP3816446A1 (de) * | 2019-10-31 | 2021-05-05 | Illinois Tool Works Inc. | Fahrzeugskühlkreislauf |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1306169A (en) * | 1919-06-10 | Screw-pump | ||
DE2905824A1 (de) | 1979-02-15 | 1980-11-13 | Alfred 4300 Essen Scholten | Kreiskolbenmotor |
JP2001355057A (ja) * | 2000-04-17 | 2001-12-25 | Netzsch Mohnopumpen Gmbh | 保護表面を有するプラスチック製ポンプ部品 |
DE10051731A1 (de) * | 2000-10-18 | 2002-05-02 | Mannesmann Rexroth Ag | Schraubenspindelpumpe |
JP2002129958A (ja) * | 2000-10-20 | 2002-05-09 | Koyo Seiko Co Ltd | 電動ウォータポンプ装置 |
DE10126482A1 (de) | 2001-05-31 | 2002-12-05 | Thyssen Nordseewerke Gmbh | Wasserver- und entsorgungsvorrichtung, insbesondere für außenluftunabhängige Dieselmotorenanlagen |
DE20318594U1 (de) | 2003-07-10 | 2004-04-08 | Allweiler Ag | Schraubenspindelpumpe zum Fördern eines Strömungsmediums |
JP4737021B2 (ja) * | 2006-09-29 | 2011-07-27 | トヨタ自動車株式会社 | 動力伝達装置および車両 |
DE102006049663A1 (de) | 2006-10-18 | 2008-05-08 | Willy Vogel Ag | Schraubenspindelpumpe mit Scheibenpumpen-Axiallager |
EP2216501A1 (de) * | 2009-02-10 | 2010-08-11 | BP Exploration Operating Company Limited | Pumpe |
DE102009012916A1 (de) * | 2009-03-12 | 2010-09-16 | Robert Bosch Gmbh | Hydraulische Zahnradmaschine |
EP2336590A3 (de) | 2009-12-15 | 2011-06-29 | Leistritz Pumpen GmbH | Pumpenaggregat für ein Doppelkupplungsgetriebe eines Kraftfahrzeugs |
DE102010011477A1 (de) | 2010-03-16 | 2011-09-22 | Audi Ag | Brennkraftmaschine mit Trockensumpfschmierung undmehrstufiger integrierter Ölpumpe |
DE102011003206A1 (de) | 2011-01-26 | 2012-07-26 | Bayerische Motoren Werke Aktiengesellschaft | Einrichtung zum Antrieb eines Nebenaggregats |
US20170074121A1 (en) * | 2014-03-03 | 2017-03-16 | Eaton Corporation | Coolant energy and exhaust energy recovery system |
KR101983917B1 (ko) | 2014-08-21 | 2019-05-29 | 써코어 펌프 노스 아메리카, 엘엘씨 | 지능형 해수 냉각 시스템 |
DE102017200876A1 (de) * | 2016-11-14 | 2018-05-17 | Mahle International Gmbh | Elektrische Kühlmittelpumpe |
-
2018
- 2018-12-20 DE DE102018222516.8A patent/DE102018222516A1/de not_active Withdrawn
-
2019
- 2019-12-05 EP EP19816301.6A patent/EP3899281B1/de active Active
- 2019-12-05 US US17/283,125 patent/US11401932B2/en active Active
- 2019-12-05 WO PCT/EP2019/083763 patent/WO2020126515A1/de unknown
- 2019-12-05 CN CN201980071326.4A patent/CN114026327A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN114026327A (zh) | 2022-02-08 |
US20210388833A1 (en) | 2021-12-16 |
US11401932B2 (en) | 2022-08-02 |
EP3899281B1 (de) | 2023-03-08 |
DE102018222516A1 (de) | 2020-06-25 |
WO2020126515A1 (de) | 2020-06-25 |
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