EP2971779A1 - Vane pump with multiple control chambers - Google Patents
Vane pump with multiple control chambersInfo
- Publication number
- EP2971779A1 EP2971779A1 EP14763782.1A EP14763782A EP2971779A1 EP 2971779 A1 EP2971779 A1 EP 2971779A1 EP 14763782 A EP14763782 A EP 14763782A EP 2971779 A1 EP2971779 A1 EP 2971779A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- control ring
- control
- chamber
- ring
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 74
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
- F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
- F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
-
- 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
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
Definitions
- Figure 4 shows a schematic representation of a prior art variable capacity vane pump
- Pump 20 further includes a second control chamber 64, the leftmost hatched area in Figure 3, which is formed between pump casing 22, pump control ring 44, resilient seal 68 and a second resilient seal 76.
- Resilient seal 76 abuts the wall of pump casing 22 to separate control chamber 64 from pump inlet 50 and resilient seal 68 separates chamber 64 from chamber 60.
- control chamber 60 and return spring 56 results in reduced reaction forces on pivot pin 52 and can improve the operating lifetime of pump 20 and can reduce "stiction" of pump control ring 44 to allow smoother control of pump 20.
- this unique positioning is not limited to use in variable capacity vane pumps with two or more equilibrium pressures and can be employed with variable capacity vane pumps with single equilibrium pressures.
- a first chamber 460 extends between first seal assembly 446 and third seal assembly 450 and between an outer surface of pump control ring 424 and housing 402.
- a second chamber 462 is defined between first seal assembly 446 and second seal assembly 448, as well as the other surface of pump control ring 424 and housing 402.
- pump 400 may be configured to operate in at least two different modes.
- first chamber 460 is provided pressurized fluid at pump outlet pressure.
- second chamber 462 may be selectively supplied pressurized fluid from any source of pressure through the use of an on/off solenoid valve.
- an upper equilibrium pressure of pump 400 is defined by the pump outlet pressure and a lower equilibrium pressure may be defined by the second source.
- Pump 500 is similar to pump 400 regarding the use of a pivoting pump control ring 526, first through fourth seal assemblies 528, 530, 532, 534, a bias spring 536, vanes 538, a rotor 540, a rotor shaft 542 and retaining rings 544. Similar elements will not be described in detail.
- control ring 526 At cold start, it may be desirable to urge control ring 526 toward a position of minimum displacement as shown in Figure 1 1 . This may be accomplished by having moment arm R be longer than moment arm R 2 . Alternatively, it may be desirable to compensate for forces acting internally within pump 500 and acting on pump control ring 526. To address this concern, it may be desirable to construct moment arm Ri at a length less than the length of moment arm R 2 to urge pump control ring 526 toward the maximum displacement position.
- Figure 9 represents control ring 526 at a position of maximum eccentricity, thereby providing maximum pump displacement.
- first seal assembly 528 is circumferentially spaced apart from fourth seal assembly 534 an angle greater than 80 degrees.
- first control chamber 520 is always active and may be in receipt of pressurized fluid from any source, such as the pump output.
- Second control chamber 524 is switched on and off via solenoid 522.
- the supply of pressurized fluid may be from any source.
- Outlet passage 550, or third control chamber 550 may or may not contribute to the pressure controlling function as described in relation to the relative lengths of moment arms Ri and R 2 .
- Pump 500 need only be associated with an on/off type solenoid valve 522 due to the provision of three control chambers.
- Third control chamber 550 provides for a very low restriction outlet flow path.
- First control chamber 520 and second control chamber 524 allow two equilibrium pressures that are determined by sources other than the pump outlet pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/800,227 US9181803B2 (en) | 2004-12-22 | 2013-03-13 | Vane pump with multiple control chambers |
PCT/IB2014/059506 WO2014141013A1 (en) | 2013-03-13 | 2014-03-06 | Vane pump with multiple control chambers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2971779A1 true EP2971779A1 (en) | 2016-01-20 |
EP2971779A4 EP2971779A4 (en) | 2016-12-07 |
EP2971779B1 EP2971779B1 (en) | 2020-08-05 |
Family
ID=51535960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14763782.1A Active EP2971779B1 (en) | 2013-03-13 | 2014-03-06 | Vane pump with multiple control chambers |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2971779B1 (en) |
JP (1) | JP6130525B2 (en) |
KR (1) | KR101789899B1 (en) |
CN (1) | CN105074217B (en) |
CA (2) | CA2902472C (en) |
MX (1) | MX365215B (en) |
WO (1) | WO2014141013A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108779772B (en) * | 2016-03-07 | 2020-09-08 | 日立汽车***株式会社 | Variable pump |
DE102016124104A1 (en) * | 2016-12-12 | 2018-06-14 | Schwäbische Hüttenwerke Automotive GmbH | Hydraulic device with sealing element |
CN106969249A (en) * | 2017-04-26 | 2017-07-21 | 奇瑞汽车股份有限公司 | A kind of vane type lubricating oil pump |
CN107605720B (en) * | 2017-10-27 | 2019-06-28 | 湖南机油泵股份有限公司 | A kind of three-level or level Four displacement-variable oil pump based on biswitch solenoid valve |
CN108894982B (en) * | 2018-08-21 | 2023-12-05 | 湖南机油泵股份有限公司 | Variable displacement vane pump with seal compensation function |
KR20210149179A (en) * | 2019-04-23 | 2021-12-08 | 스택폴 인터내셔널 엔지니어드 프로덕츠, 엘티디. | vane pump with improved seal assembly for control chamber |
EP4240973A1 (en) | 2020-11-09 | 2023-09-13 | Pierburg Pump Technology GmbH | Variable displacement lubricant pump |
US11635076B2 (en) * | 2021-01-22 | 2023-04-25 | Slw Automotive Inc. | Variable displacement vane pump with improved pressure control and range |
CN117052957B (en) * | 2023-10-10 | 2024-01-26 | 山东振宇厨业有限公司 | Linkage safety regulating valve for gas cooker |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6558132B2 (en) | 2001-09-24 | 2003-05-06 | General Motors Corporation | Variable displacement pump |
KR101235988B1 (en) * | 2004-10-25 | 2013-02-21 | 마그나 파워트레인 인크. | Variable capacity vane pump with force reducing chamber on displacement ring |
DE202005021925U1 (en) * | 2004-12-22 | 2011-08-11 | Magna Powertrain Inc. | Vane pump |
JP5174720B2 (en) | 2009-03-09 | 2013-04-03 | 日立オートモティブシステムズ株式会社 | Variable displacement pump |
EP2253847B1 (en) * | 2009-05-18 | 2019-07-03 | Pierburg Pump Technology GmbH | Variable capacity lubricant vane pump |
-
2014
- 2014-03-06 WO PCT/IB2014/059506 patent/WO2014141013A1/en active Application Filing
- 2014-03-06 MX MX2015012591A patent/MX365215B/en active IP Right Grant
- 2014-03-06 KR KR1020157027875A patent/KR101789899B1/en active IP Right Grant
- 2014-03-06 CA CA2902472A patent/CA2902472C/en active Active
- 2014-03-06 CA CA3014939A patent/CA3014939C/en active Active
- 2014-03-06 CN CN201480013705.5A patent/CN105074217B/en active Active
- 2014-03-06 EP EP14763782.1A patent/EP2971779B1/en active Active
- 2014-03-06 JP JP2015562455A patent/JP6130525B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2016510102A (en) | 2016-04-04 |
CA2902472C (en) | 2018-10-02 |
KR20150128866A (en) | 2015-11-18 |
WO2014141013A1 (en) | 2014-09-18 |
KR101789899B1 (en) | 2017-10-25 |
CN105074217B (en) | 2017-03-15 |
MX365215B (en) | 2019-05-27 |
JP6130525B2 (en) | 2017-05-17 |
CA3014939A1 (en) | 2014-09-18 |
EP2971779B1 (en) | 2020-08-05 |
CA2902472A1 (en) | 2014-09-18 |
EP2971779A4 (en) | 2016-12-07 |
CA3014939C (en) | 2020-07-14 |
CN105074217A (en) | 2015-11-18 |
MX2015012591A (en) | 2016-01-20 |
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