US20190017498A1 - Piston Compressor with a Closing Device for the Outlet Line - Google Patents

Piston Compressor with a Closing Device for the Outlet Line Download PDF

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Publication number
US20190017498A1
US20190017498A1 US16/136,908 US201816136908A US2019017498A1 US 20190017498 A1 US20190017498 A1 US 20190017498A1 US 201816136908 A US201816136908 A US 201816136908A US 2019017498 A1 US2019017498 A1 US 2019017498A1
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US
United States
Prior art keywords
piston compressor
valve
compression chamber
outlet
clutch
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.)
Abandoned
Application number
US16/136,908
Other languages
English (en)
Inventor
Gilles Hebrard
Wolfgang Kiener
Jean-Baptiste Marescot
Joerg MELLAR
Michel Saintive
Thomas Weinhold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIENER, WOLFGANG, MELLAR, JOERG, WEINHOLD, THOMAS, Marescot, Jean-Baptiste, SAINTIVE, MICHEL, HEBRARD, GILLES
Publication of US20190017498A1 publication Critical patent/US20190017498A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/08—Actuation of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/124—Coupling parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/124—Coupling parameters
    • F04B2201/1241—Engagement

Definitions

  • the invention relates to a piston compressor for compressing a gas, which piston compressor is optionally separable from a drive device by means of a clutch, having an inlet valve, which is arranged between an inlet line for gas for compression and a compression chamber of the piston compressor, and having an outlet valve, which is arranged between the compression chamber of the piston compressor and an outlet line for compressed gas.
  • Such compressors are used for example for the compressed-air supply of commercial vehicles, in particular for the compressed-air supply of the brake system.
  • the compressor is driven by the drivetrain of the internal combustion engine.
  • Applications are known in which a clutch is arranged between the compressor and the drive connection in order to separate the compressor from the drive when the compressed-air system of the commercial vehicle has been charged with compressed air.
  • the outlet line of the compressor is evacuated simultaneously with the opening of the clutch.
  • the invention is therefore based on the object of providing an improved piston compressor which avoids the abovementioned disadvantages and the undesired effects resulting therefrom.
  • a piston compressor and a method for operating a piston compressor are provided in accordance with embodiments of the invention.
  • a piston compressor for compressing a gas which piston compressor is optionally separable from a drive device by way of a clutch, having an inlet valve, which is arranged between an inlet line for gas for compression and a compression chamber of the piston compressor, and having an outlet valve, which is arranged between the compression chamber of the piston compressor and an outlet line for compressed gas.
  • the piston compressor has a separate closing device which is arranged downstream of the outlet valve in a flow direction of the gas and by which the outlet line can be closed off with respect to the compression chamber during the time in which the piston compressor is separated from the drive device.
  • a piston compressor of said type has an inlet line which is, in particular, part of an inlet system and by which a gas for compression is conducted to a compression chamber of the piston compressor.
  • an inlet valve which is open while gas for compression is being drawn into the compression chamber (the pressure in the compression chamber is lower than the pressure in the inlet line).
  • the inlet valve closes off the compression chamber with respect to the inlet line.
  • an outlet valve which is open while the compressed gas is being discharged from the compression chamber (the pressure in the compression chamber is higher than the pressure in the outlet line) and which thus defines a connection between the compression chamber and the outlet line.
  • the outlet valve closes the connection between compression chamber and outlet line while gas for compression is being drawn into the compression chamber (the pressure in the compression chamber is lower than the pressure in the outlet line), in order to prevent a backflow of compressed gas from the outlet line into the compression chamber.
  • valves Both for inlet valves and for outlet valves of piston compressors, use is commonly made of valves which have a closing body which, in a manner dependent on the pressure difference on the two sides of the valve, is pushed against the valve seat and thus closes the valve or is lifted off the valve seat, whereby the valve opens.
  • a conventional type of construction of such valves has a valve tongue which serves as closing body. It is however also known for piston compressors to use inlet and outlet valves which have switched valve bodies.
  • the piston compressor according to the invention has a separate closing device arranged downstream of the outlet valve in a flow direction of the gas.
  • Said closing device is designed so as to be suitable for closing off the outlet line in the direction of the outlet valve in particular in gas-tight fashion.
  • a backflow of compressed gas from the outlet line back into the compression chamber through an outlet valve that is possibly not reliably closed can thus be prevented by means of the closed closing device.
  • the closing device is a device which is separate from the outlet valve and which is arranged independently of the outlet valve and which is not operatively connected thereto.
  • the closing device is in particular arranged adjacent to the outlet valve at the start, pointing toward the compression chamber, of the outlet line.
  • a risk of a backflow of pressurized, compressed gas from the outlet line back into the compression chamber exists in particular during a separation of the piston compressor from the drive device, and in particular in the case of a charged outlet line. Therefore, the outlet line can be closed off with respect to the compression chamber by means of the closing device in particular during the separation of the piston compressor from the drive device.
  • the possibility of pressurized, compressed gas passing out of the outlet line back into the compression chamber, and causing a pressure increase there with the consequences described in the introduction, in particular owing to an incompletely closed outlet valve, during a separation of the piston compressor from the drive device is prevented.
  • the closing device closes the outlet line in a manner dependent on the pressure difference prevailing at the two sides of the closing device.
  • the closing device is designed so as to close when the pressure in the outlet line downstream of the closing device in the flow direction of the gas is higher than the pressure in the outlet line upstream of the closing device, that is to say in the direction of the compression chamber of the piston compressor. This is the case in particular if the outlet valve does not reliably close, such that compressed gas can flow out of the outlet line back into the compression chamber.
  • a pressure drop occurs on that side of the closing device which faces toward the compression chamber, which pressure drop then leads to the closure of the closing device.
  • a shut-off valve forms the closing device.
  • Shut-off valves also switch in a manner dependent on the pressure difference prevailing at the two sides of the shut-off valve.
  • the closing element is normally preloaded, such that, in the case of an identical pressure on both sides of the valve, or up to a pressure difference that can be compensated by the preload, the valve remains closed. Therefore, a pressure difference between the two sides of the valve such as prevails in particular during the compression operation of the piston compressor is necessary to open a shut-off valve.
  • a suitable type of construction of a shut-off valve suitable for the present purpose is a check valve.
  • a switchable valve device forms the closing device.
  • the switching position of the closing device is freely controllable, in particular in a manner dependent on various parameters, for example in a manner dependent on the switching state of the clutch between the drive device and the piston compressor, or in a manner dependent on the pressure difference between the pressurized gas system and the compression chamber.
  • the switchable closing device is designed such that it is switchable into a closed position simultaneously with the opening of the clutch. Switching of the closing device into a closed position simultaneously with the opening of the clutch offers the advantage that the outlet line is always closed off with respect to the compression chamber as soon as the piston compressor is not being driven. In this way, the risk of an undetected leak of compressed gas back into the compression chamber when the piston compressor is not being driven, with the adverse effects described above, can be prevented, because in this embodiment the outlet line is closed off when the clutch is open, irrespective of a leak of the outlet valve.
  • a 2/2-way valve forms the switchable valve device.
  • Such a valve constitutes an expedient and reliable embodiment of a switchable closing device.
  • One embodiment of the piston compressor has a control device which has a signal connection both to the clutch and to the switchable valve device.
  • a control device may be formed by the control device of the pressurized gas system, which jointly performs the control of the switchable valve device. It is however alternatively also possible for the piston compressor to have, for this purpose, a control device which is separate from the control device of the pressurized gas system and which serves for switching the closing device.
  • a method for operating a piston compressor for compressing a gas is also provided.
  • the piston compressor is optionally separable from a drive device by way of a clutch, and has an inlet valve, which is arranged between an inlet line for gas for compression and a compression chamber of the piston compressor, and has an outlet valve, which is arranged between the compression chamber of the piston compressor and an outlet line for compressed gas.
  • the piston compressor has a separate switchable closing device which is arranged downstream of the outlet valve in a flow direction of the gas and by which the outlet line can be closed off with respect to the compression chamber during the time in which the piston compressor is separated from the drive device, and a control device, which has a signal connection both to the clutch and to the switchable valve device.
  • the control device switches the switchable valve device into a closed position when the clutch between the piston compressor and the drive device is open.
  • the closing device is switched into a closed position when the clutch between the piston compressor and the drive device is open, the outlet line is always closed off with respect to the compression chamber when the piston compressor is not being driven. In this way, even in the case of an outlet valve which is not reliably closed, no compressed gas can pass back into the compression chamber, and give rise to the adverse effects described above, when the piston compressor is not being driven.
  • the control device switches the switchable valve device into an open position when the clutch between the piston compressor and the drive device is in a closed state.
  • the closing device is designed such that it is switchable into a closed position simultaneously with the opening of the clutch.
  • the switchable closing device may in this case be formed for example by a 2/2-way valve.
  • FIG. 1 is a schematic illustration of an exemplary piston compressor of the prior art.
  • FIG. 2 is an illustration of an exemplary outlet valve as it is used in piston compressors in the prior art.
  • FIG. 3 is a schematic illustration of a first exemplary embodiment of a piston compressor according to the invention, in which a shut-off valve forms the closing device.
  • FIG. 4 is a schematic illustration of a second exemplary embodiment of a piston compressor according to the invention, in which a switchable valve device forms the closing device.
  • FIG. 1 is a schematic illustration of an exemplary piston compressor 10 such as is known in the prior art.
  • the crankshaft 11 of the piston compressor 10 is connected via a clutch 3 to a drive device (not illustrated, in this case an internal combustion engine) and is selectively separable from said drive device by way of the clutch 3 .
  • a drive device not illustrated, in this case an internal combustion engine
  • the clutch 3 When the clutch 3 is open, it is thus the case that no torque is transmitted to the crankshaft 11 of the piston compressor 10 , such that the crankshaft 11 is stationary during the separation of the piston compressor 10 from the drive device.
  • the crankshaft 11 is connected to a connecting rod 12 which is mounted eccentrically on said crankshaft, on which connecting rod there is mounted a piston 13 .
  • the piston 13 is mounted in axially movable fashion in a cylinder 14 of the piston compressor 10 .
  • the crank drive 15 which has at least one crankshaft 11 , a connecting rod 12 and a piston 13 , is arranged in a crankcase 16 , which is fixedly connected to the cylinder 14 .
  • the cylinder 14 is closed off by a valve plate 20 .
  • the cylinder 14 , the piston 13 and the valve plate 20 define the compression chamber 17 in the cylinder 14 .
  • On the valve plate 20 there is arranged an inlet valve 21 which is arranged between an inlet line 22 and the compression chamber 17 .
  • the inlet line 22 is part of an inlet system 23 which draws fresh air from the surroundings through a filter (not illustrated) and supplies said fresh air via the inlet line 22 through the cylinder head (not illustrated) to the compression chamber 17 .
  • the cylinder head is arranged above the valve plate 20 and has a cylinder head volume 24 which is connected via the inlet valve 21 to the compression chamber 17 .
  • the inlet valve 21 is designed as a shut-off valve which allows fresh air to be drawn into the compression chamber 17 but prevents a backflow of the air that has been drawn into the compression chamber 17 via the inlet line 22 .
  • an outlet valve 26 which is arranged between the compression chamber 17 and an outlet line 27 .
  • compressed gas in this case air
  • the outlet valve 26 which is likewise designed as a shut-off valve, prevents a backflow of compressed air from the outlet line 27 into the compression chamber 17 .
  • the outlet valve 26 has, as a valve body, a valve tongue 26 a which, above a predetermined pressure difference between the compression chamber 17 and the outlet line 27 , lifts off from the valve seat 26 b and permits a throughflow of air from the compression chamber 17 into the outlet line 27 .
  • the outlet valve 26 furthermore has an abutment element 26 c which is arranged above the outlet opening 28 and against which the valve tongue 26 a bears in the open state. As soon as the valve tongue 26 a lifts off from the valve seat 26 b , the pressurized air can flow from the compression chamber 17 through the lateral open regions past the valve tongue 26 a and the abutment element 26 c into the outlet line 27 .
  • the piston compressor 10 If the piston compressor 10 is then connected to the drive device again, the piston compressor 10 generates an internal pressure of up to 60 bar during the first stroke. If the compression chamber 17 withstands this enormous internal pressure, the torque that is generated here at the crankshaft 11 is normally far too high for the clutch 3 , such that the latter slips, overheats, and is subject to excessively rapid wear.
  • FIG. 3 is a schematic illustration of a first exemplary embodiment of a piston compressor 10 according to the invention.
  • the construction of the piston compressor 10 in FIG. 3 corresponds substantially to the construction of the piston compressor 10 illustrated in FIG. 1 and described with regard thereto, such that identical elements of the piston compressors 10 are denoted by the same reference designations. Below, only the differences between the piston compressor 10 from FIG. 3 and the piston compressor 10 from FIG. 1 will be discussed.
  • FIG. 4 is a schematic illustration of a second exemplary embodiment of a piston compressor 10 according to the invention.
  • the construction of the piston compressor 10 in FIG. 4 also substantially corresponds to the construction of the piston compressor 10 illustrated in FIG. 1 and described with regard thereto, such that identical elements of the piston compressors 10 are denoted by the same reference designations. Only the differences between the piston compressor 10 from FIG. 4 and the piston compressor 10 from FIG. 1 will be discussed below.
  • the piston compressor 10 illustrated in FIG. 4 has a closing device in the form of a switchable valve device 32 which is arranged separately downstream of the outlet valve 26 in the flow direction.
  • the switchable valve device 32 is, in the exemplary embodiment, designed as a 2/2-way valve, which is switchable from a closed position into the illustrated open position.
  • the switchable valve device 32 is connected via a control line 32 a to a control device 33 , which opens and closes the switchable valve device 32 by means of switching signals transmitted via the control line 32 a .
  • the control device 33 is furthermore connected via a control line 3 a to the clutch 3 , wherein signals regarding the switching position of the clutch 3 are transmitted by the control line 3 a to the control device 33 .
  • the control device 33 is optionally connected via a control line 33 a to the controller of the compressed-air system.
  • the switchable valve device 32 Upon the closure of the clutch 3 at the start of compression operation of the piston compressor 10 , the switchable valve device 32 is switched into the open position shown in FIG. 4 .
  • compressed air which is at a higher pressure than the compressed air in the outlet line 27 can be conveyed through the outlet valve 26 , and through the switchable valve device 32 which is situated in the open position, into the outlet line 27 , and supplied to the compressed-air system.
  • the opening of the clutch 3 may take place simultaneously with the switching of the switchable valve device 32 into the closed position, and the closing of the clutch 3 may take place simultaneously with the switching of the switchable valve device 32 into the open position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
US16/136,908 2016-03-21 2018-09-20 Piston Compressor with a Closing Device for the Outlet Line Abandoned US20190017498A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016105148.9 2016-03-21
DE102016105148.9A DE102016105148A1 (de) 2016-03-21 2016-03-21 Kolbenkompressor mit Schließeinrichtung für die Auslassleitung
PCT/EP2017/056910 WO2017186416A1 (de) 2016-03-21 2017-03-23 Kolbenkompressor mit schliesseinrichtung für die auslassleitung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/056910 Continuation WO2017186416A1 (de) 2016-03-21 2017-03-23 Kolbenkompressor mit schliesseinrichtung für die auslassleitung

Publications (1)

Publication Number Publication Date
US20190017498A1 true US20190017498A1 (en) 2019-01-17

Family

ID=58401583

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/136,908 Abandoned US20190017498A1 (en) 2016-03-21 2018-09-20 Piston Compressor with a Closing Device for the Outlet Line

Country Status (7)

Country Link
US (1) US20190017498A1 (zh)
JP (1) JP6689398B2 (zh)
KR (1) KR20190123666A (zh)
CN (1) CN108934172B (zh)
BR (1) BR112018068205A2 (zh)
DE (1) DE102016105148A1 (zh)
WO (1) WO2017186416A1 (zh)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216815A1 (de) * 1982-05-05 1983-11-10 Knorr-Bremse GmbH, 8000 München Steuereinrichtung zur regenerierung eines lufttrockners fuer eine pneumatische anlage, insbesondere einer fahrzeugbremsanlage
JP2004068781A (ja) * 2002-08-09 2004-03-04 Calsonic Compressor Seizo Kk 気体圧縮機
JP2006336574A (ja) * 2005-06-03 2006-12-14 Anest Iwata Corp 不活性ガス昇圧送給方法および装置
DE202006020240U1 (de) * 2006-09-19 2008-02-07 Ne-Ma S.P.A. Pressostati Schaltungsanordnung für einen elektromotorisch angetriebenen Kolbenkompressor
DE102008004807B4 (de) * 2007-02-07 2012-10-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Druckluftversorgungsanlage und Verfahren zum Betreiben einer Druckluftversorgungsanlage
DE102007008160A1 (de) * 2007-02-19 2008-08-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Druckluftkompressor und Verfahren zu dessen Steuerung
DE102007026249B4 (de) * 2007-06-04 2009-04-23 Voith Patent Gmbh Steuerungsverfahren für ein Kraftfahrzeugdruckluftsytem und Kraftfahrzeugdruckluftsystem
DE102008002017A1 (de) * 2008-05-28 2009-12-03 Zf Friedrichshafen Ag Verfahren zum Betreiben einer Kompressorkupplung in einem Fahrzeug
CN201696273U (zh) * 2010-03-15 2011-01-05 邓文革 车用气泵自动控制装置
CN202579095U (zh) * 2012-04-06 2012-12-05 三一重工股份有限公司 一种车用空压机系统
CN202531402U (zh) * 2012-05-06 2012-11-14 戴珍治 一种双储气罐空压机
DE102013000623A1 (de) * 2013-01-16 2014-07-17 DüRR DENTAL AG Verdichtereinheit und Kompressorsystem mit einer solchem
CN104863638A (zh) * 2014-02-20 2015-08-26 许少君 压缩空气动力发电机
CN203730246U (zh) * 2014-02-24 2014-07-23 福建元弘自动化科技有限公司 一种节能降噪空气压缩系统
CN204591637U (zh) * 2015-04-24 2015-08-26 南京祥源动力供应有限公司 一种混合型空压机组的节能进气系统
CN104948438A (zh) * 2015-07-14 2015-09-30 潍柴动力股份有限公司 一种空压机的控制装置

Also Published As

Publication number Publication date
JP6689398B2 (ja) 2020-04-28
CN108934172B (zh) 2020-07-31
JP2019510164A (ja) 2019-04-11
WO2017186416A8 (de) 2018-05-17
KR20190123666A (ko) 2019-11-01
DE102016105148A1 (de) 2017-09-21
WO2017186416A1 (de) 2017-11-02
CN108934172A (zh) 2018-12-04
BR112018068205A2 (pt) 2019-01-29

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