US20120244014A1 - Electromagnetic pump - Google Patents

Electromagnetic pump Download PDF

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Publication number
US20120244014A1
US20120244014A1 US13/413,234 US201213413234A US2012244014A1 US 20120244014 A1 US20120244014 A1 US 20120244014A1 US 201213413234 A US201213413234 A US 201213413234A US 2012244014 A1 US2012244014 A1 US 2012244014A1
Authority
US
United States
Prior art keywords
piston
pump chamber
cylinder
electromagnetic
intake
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
US13/413,234
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English (en)
Inventor
Masaya Nakai
Kazuhiko Kato
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.)
Aisin AW Co Ltd
Original Assignee
Aisin AW Co Ltd
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 Aisin AW Co Ltd filed Critical Aisin AW Co Ltd
Assigned to AISIN AW CO., LTD. reassignment AISIN AW CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KATO, KAZUHIKO, NAKAI, MASAYA
Publication of US20120244014A1 publication Critical patent/US20120244014A1/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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/048—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing around the moving part of the motor
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow

Definitions

  • the present invention relates to an electromagnetic pump including: a cylinder; a piston that can reciprocate inside the cylinder; an electromagnetic portion that forwardly moves the piston; a biasing member that backwardly moves the piston; a support member that supports the biasing member and, with the cylinder and the piston, defines a pump chamber; an intake on-off valve that is incorporated into the support member, and allows a hydraulic fluid to move from an intake port to the pump chamber and prohibits reverse movement of the hydraulic fluid; and a discharge on-off valve that allows the hydraulic fluid to move from the pump chamber to a discharge port and prohibits reverse movement of the hydraulic fluid.
  • a past example of this type of electromagnetic pump includes: a cylinder; a piston that reciprocates inside the cylinder to change the volume inside a pump chamber; a solenoid portion that forwardly moves the piston; a spring that backwardly moves the piston; an intake check valve that allows a hydraulic fluid to move from an intake port to the pump chamber and prohibits reverse movement of the hydraulic fluid; and a discharge check valve that allows the hydraulic fluid to move from the pump chamber to a discharge port and prohibits reverse movement of the hydraulic fluid.
  • the intake check valve and the discharge check valve are accommodated inside the cylinder.
  • the intake check valve is configured from a ball; a hollow cylindrical body that accommodates the ball therein, and is formed with an axially center hole that provides communication between the intake port and the pump chamber and forms an opening portion of the intake port with an inner diameter smaller than the outer diameter of the ball; a spring that biases the ball with respect to the opening portion of the intake port in a direction opposite from the direction in which the hydraulic oil flows from the intake port; and a spring seat that receives the spring.
  • the spring seat faces the pump chamber, and a surface of the spring seat on the pump chamber side also supports the spring that backwardly moves the piston.
  • the piston and the intake check valve are accommodated facing one another inside the cylinder, and the pump chamber is defined by the cylinder, the piston, and the intake check valve. Therefore, how the intake check valve is configured is an extremely critical factor for determining the volume of the pump chamber and also determining the biasing force of the spring accommodated inside the pump chamber.
  • An electromagnetic pump of the present invention further improves discharge performance.
  • the electromagnetic pump of the present invention employs the following to achieve the above.
  • An electromagnetic pump includes: a cylinder; a piston that can reciprocate inside the cylinder; an electromagnetic portion that forwardly moves the piston; a biasing member that backwardly moves the piston; a support member that supports the biasing member and, with the cylinder and the piston, defines a pump chamber; an intake on-off valve that is incorporated into the support member, and allows a hydraulic fluid to move from an intake port to the pump chamber and prohibits reverse movement of the hydraulic fluid; and a discharge on-off valve that allows the hydraulic fluid to move from the pump chamber to a discharge port and prohibits reverse movement of the hydraulic fluid.
  • the support member includes therein a bottomed hollow portion accommodating from the intake port side at least a portion of the intake on-off valve, and a communication hole providing communication between a bottom portion of the hollow portion on the pump chamber side and the pump chamber.
  • the support member is formed with a support portion that supports the biasing member, and a projection portion that is in communication with the communication hole and projects from the support portion toward the piston side.
  • the electromagnetic pump includes: a cylinder; a piston that can reciprocate inside the cylinder; an electromagnetic portion that forwardly moves the piston; a biasing member that backwardly moves the piston; a support member that supports the biasing member and, with the cylinder and the piston, defines a pump chamber; an intake on-off valve that is incorporated into the support member, and allows a hydraulic fluid to move from an intake port to the pump chamber and prohibits reverse movement of the hydraulic fluid; and a discharge on-off valve that allows the hydraulic fluid to move from the pump chamber to a discharge port and prohibits reverse movement of the hydraulic fluid.
  • the support member includes therein a bottomed hollow portion accommodating from the intake port side at least a portion of the intake on-off valve, and a communication hole providing communication between a bottom portion of the hollow portion on the pump chamber side and the pump chamber.
  • the support member is formed with a support portion that supports the biasing member, and a projection portion that is in communication with the communication hole and projects from the support portion toward the piston side.
  • a diameter of the projection portion on the piston side may be formed smaller than a diameter of the projection portion on the support portion side.
  • the projection portion may be formed into a truncated conical shape.
  • the hydraulic fluid may be discharged by the biasing member backwardly moving the piston. Since the biasing force of the biasing member exhibits less variation due to temperature compared to the electromagnetic force, the axial length of the electromagnetic pump can be shortened by using the biasing force to discharge the hydraulic fluid, and application of the present invention enables further shortening of the axial length.
  • the hollow portion of the support member may be formed such that the bottom portion is more toward the piston side than a support surface of the support portion.
  • the length of the support member in the axial direction can be shortened and the overall pump can be downsized.
  • FIG. 1 is a structural diagram that shows the overall configuration of an electromagnetic pump 20 as an embodiment of the present invention
  • FIG. 2 is a perspective view of a piston 50 and an intake check valve 60 inserted inside a cylinder 42 ;
  • FIG. 3 is an exterior view that shows the exterior of a valve body 62 .
  • FIG. 1 is a structural diagram that shows the overall configuration of an electromagnetic pump 20 as an embodiment of the present invention.
  • the electromagnetic pump 20 of the embodiment is configured as a piston pump that reciprocates a piston 50 to pressure-feed a hydraulic oil.
  • the electromagnetic pump 20 also includes a solenoid portion 30 that generates an electromagnetic force, and a pump portion 40 that operates by the electromagnetic force of the solenoid portion 30 .
  • the electromagnetic pump 20 is incorporated into a valve body as a portion of a hydraulic circuit for turning on and off a clutch or a brake provided in an automatic transmission mounted in an automobile, for example.
  • the solenoid portion 30 has a case 31 as a bottomed cylinder member on which an electromagnetic coil 32 , a plunger 34 as a movable element, and a core 36 as a fixed element are disposed. Applying a current to the electromagnetic coil 32 forms a magnetic circuit in which magnetic flux circles the case 31 , the plunger 34 , and the core 36 , whereby the plunger 34 is suctioned and presses out a shaft 38 that is in contact with a proximal end of the plunger 34 .
  • the pump portion 40 includes: a hollow cylindrical cylinder 42 that is joined to the solenoid portion 30 ; the piston 50 that is slidably disposed inside the cylinder 42 , and has a base end surface that is coaxial with and contacts a proximal end of the shaft 38 of the solenoid portion 30 ; a spring 46 that contacts a proximal end of the piston 50 , and applies a biasing force in a direction opposite from the direction in which the solenoid portion 30 applies an electromagnetic force; an intake check valve 60 that supports the spring 46 from a side opposite from the proximal end surface of the piston 50 , and allows the hydraulic oil to flow in the suctioning direction toward a pump chamber 41 and prohibits the hydraulic oil from flowing in the reverse direction; a discharge check valve 70 that is embedded in the piston 50 , and allows the hydraulic oil to flow in the discharging direction from the pump chamber 41 and prohibits the hydraulic oil from flowing in the reverse direction; a strainer 47 that is disposed upstream of the intake check valve 60 , and catches foreign
  • Spiral grooves are formed in the circumferential direction on an inner circumferential surface of the cylinder cover 48 and an outer circumferential surface of the opening portion 42 a of the cylinder 42 . Threadedly fastening the cylinder cover 48 with the opening portion 42 a of the cylinder 42 attaches the cylinder cover 48 to the opening portion 42 a of the cylinder 42 .
  • an intake port 49 for suctioning the hydraulic oil is formed at an axial center of the cylinder cover 48
  • a discharge port 43 for discharging the suctioned hydraulic oil is formed in a side surface of the cylinder 42 .
  • the piston 50 is formed from a cylindrical piston body 52 , and a cylindrical shaft portion 54 b that has an outer diameter smaller than the piston body 52 and an end surface that contacts the proximal end of the shaft 38 of the solenoid portion 30 .
  • the piston 50 moves in association with the shaft 38 of the solenoid portion 30 and reciprocates inside the cylinder 42 .
  • a cylindrical, bottomed hollow portion 52 a that can accommodate the discharge check valve 70 is formed at an axial center of the piston 50 .
  • the hollow portion 52 a of the piston 50 runs from a proximal end surface of the piston 50 to inside the piston body 52 , and extends to partway inside the shaft portion 54 .
  • two through holes 54 a, 54 b that intersect at a 90-degree angle in the radial direction are formed in the shaft portion 54 .
  • the discharge port 43 is formed around the shaft portion 54 , and the hollow portion 52 a of the piston 50 is provided in communication with the discharge port 43 through the two through holes 54 a, 54 b.
  • the intake check valve 60 includes: a valve body 62 that is fitted by insertion to an inner circumferential surface of the opening portion 42 a of the cylinder 42 , formed therein with a bottomed hollow portion 62 a, and formed with a center hole 62 b that provides communication between the hollow portion 62 a and the pump chamber 41 at an axial center of the bottom of the hollow portion 62 a; a ball 64 ; a spring 66 that applies a biasing force to the ball 64 ; and a plug 68 that is fitted by insertion to an inner circumferential surface of the hollow portion 62 a with the ball 64 and the spring 66 incorporated into the hollow portion 62 a of the valve body 62 .
  • FIG. 2 is a perspective view of the piston 50 and the intake check valve 60 inserted inside the cylinder 42
  • FIG. 3 is an exterior view that shows the exterior of the valve body 62
  • the valve body 62 is formed from a stepped structure that includes a cylindrical base portion 63 a and a truncated conical projection portion 63 b that projects from a seat surface of the base portion 63 a.
  • the base portion 63 a On a circumferential edge portion of the seat surface, the base portion 63 a has a ring-shaped surface that supports the spring 46 . The height of the seat surface is adjusted to allow spring spacing for realizing a required biasing force.
  • the projection portion 63 b is formed so as to project inside the pump chamber 41 , and the projecting height and diameter are adjusted such that the volume inside the pump chamber 41 becomes a volume for realizing a required discharge pressure.
  • the valve body 62 adjusts the biasing force of the spring 46 and the volume of the pump chamber 41 using the base portion 63 a and the projection portion 63 b.
  • the hollow portion 62 a formed inside the valve body 62 runs through an axial center inside the base portion 63 a from a back surface of the base portion 63 a, and extends to the vicinity of a proximal end inside the projection portion 63 b, with the ball 64 , the spring 66 , and the plug 68 incorporated in that order inside the hollow portion 62 a .
  • the intake check valve 60 can thus be made compact because the axial length of the valve body 62 need only correspond to a length required for incorporating the ball 64 , the spring 66 , and the plug 68 .
  • the discharge check valve 70 includes: a ball 74 , a spring 76 that applies a biasing force to the ball 74 ; and a plug 78 as a ring-shaped member that has a center hole 79 with an inner diameter smaller than the outer diameter of the ball 74 .
  • the spring 76 , the ball 74 , and the plug 78 are incorporated in that order from an opening portion 52 b of the hollow portion 52 a of the piston 50 , and fixed by a snap ring 79 .
  • the pump chamber 41 is formed by a space that is surrounded by an inner wall 42 b on which the piston body 52 slides, a surface of the piston body 52 on the spring 46 side, and a surface of the valve body 62 of the intake check valve 60 on the spring 46 side.
  • the volume inside the pump chamber 41 increases and causes the intake check valve 60 to open and the discharge check valve 70 to close, thereby suctioning the hydraulic oil through the intake port 49 .
  • the cylinder 42 is formed with the inner wall 42 b on which the piston body 52 slides, and an inner wall 42 c on which the shaft portion 54 slides.
  • the inner wall 42 b and the inner wall 42 c are arranged in a stepped configuration, and the discharge port 43 is formed at a stepped section thereof.
  • the stepped section forms a space that is surrounded by a ring-shaped surface of the stepped section between the piston body 52 and the shaft portion 54 , and an outer circumferential surface of the shaft portion 54 . Because the space is formed on the opposite side of the piston body 52 from the pump chamber 41 , the volume of the space decreases when the volume of the pump chamber 41 increases, and the volume of the space increases when the volume of the pump chamber 41 decreases.
  • the change in the volume of the space is smaller than the change in the volume of the pump chamber 41 , because the surface area (pressure-receiving surface area) of the piston body 52 that receives pressure from the pump chamber 41 side is larger than the surface area (pressure-receiving surface area) of the piston body 52 that receives pressure from the discharge port 43 side. Therefore, the space functions as a second pump chamber 56 .
  • an amount of hydraulic oil that corresponds to the difference in the amount that the volume of the pump chamber 41 decreases and the amount that the volume of the second pump chamber 56 increases is delivered from the pump chamber 41 to the second pump chamber 56 via the discharge check valve 70 and discharged through the discharge port 43 .
  • the valve body 62 of the intake check valve 60 is formed from a stepped structure that includes the cylindrical base portion 63 a and the truncated conical projection portion 63 b that projects from the seat surface of the base portion 63 a.
  • the valve body 62 of the intake check valve 60 is also formed such that the base portion 63 a has the ring-shaped surface that supports the spring 46 on the circumferential edge portion of the seat surface, and the projection portion 63 b projects inside the pump chamber 41 . Therefore, the spring spacing can be adjusted by adjusting the height of the seat surface of the base portion 63 a, and the volume inside the pump chamber 41 can be adjusted by adjusting the projecting height and diameter of the projection portion 63 b.
  • a simple structure can optimize the biasing force of the spring 46 and the volume of the pump chamber 41 , and also further improve discharge performance.
  • the hollow portion 62 a formed inside the valve body 62 runs through the axial center inside the base portion 63 a from the back surface of the base portion 63 a, and extends to the vicinity of the proximal end inside the projection portion 63 b, with the ball 64 , the spring 66 , and the plug 68 incorporated inside the hollow portion 62 a. Therefore, the intake check valve 60 can be made more compact because the axial length of the valve body 62 need only correspond to the length required for incorporating the ball 64 , the spring 66 , and the plug 68 .
  • the discharge check valve 70 is embedded in the piston 50 .
  • the discharge check valve 70 may not be embedded in the piston 50 , and may be incorporated into a valve body outside the cylinder 42 , for example.
  • the projection portion 63 b of the valve body 62 has a truncated conical shape.
  • the present invention is not limited to this example, and the projection portion 63 b may have any shape, such as a cylindrical shape, provided that the projection portion 63 b projects inside the pump chamber 41 .
  • the hollow portion 62 a of the valve body 62 runs through the inside of the base portion 63 a from the back surface of the base portion 63 a, and extends to the vicinity of the proximal end inside the projection portion 63 b.
  • the hollow portion 62 a may not extend to inside the projection portion 63 b, In such case, the height of the base portion 63 a may be increased to incorporate the ball 64 , the spring 66 , and the plug 68 in the hollow portion.
  • the electromagnetic pump 20 of the embodiment is configured as a type of electromagnetic pump in which one reciprocal movement of the piston 50 discharges the hydraulic oil twice from the discharge port 43 .
  • the electromagnetic pump 20 may be any type of electromagnetic pump provided that the electromagnetic pump is capable of discharging the hydraulic oil in association with the reciprocal movement of the piston.
  • Such examples include an electromagnetic pump that suctions the hydraulic oil through the intake port into the pump chamber when the piston is forwardly moved by the electromagnetic force from the solenoid portion, and discharges the hydraulic oil inside the pump chamber from the discharge port when the piston is backwardly moved by the biasing force of the spring, as well as an electromagnetic pump that suctions the hydraulic oil through the intake port into the pump chamber when the piston is backwardly moved by the biasing force of the spring, and discharges the hydraulic oil inside the pump chamber from the discharge port when the piston is forwardly moved by the electromagnetic force from the solenoid portion.
  • the electromagnetic pump 20 of the embodiment is used to supply a hydraulic pressure for turning on and off a clutch or a brake of an automatic transmission mounted in an automobile.
  • the present invention is not limited to this example, and the electromagnetic pump 20 may be used in any system that transports fuel, transports lubricating fluid, or the like.
  • the cylinder 42 corresponds to a “cylinder”; the piston 50 to a “piston”; the solenoid portion 30 to an “electromagnetic portion”; the spring 46 to a “biasing member”; the valve body 62 to a “support member”; the ball 64 , the spring 66 , and the plug 68 that constitute the intake check valve 60 to an “intake on-off valve”; the discharge check valve 70 to a “discharge on-off valve”; the base portion 63 a of the valve body 62 to a “support portion”; and the projection portion 63 b to a “projection portion”.
  • the present invention may be used in the manufacturing industry of an electromagnetic pump, and the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
US13/413,234 2011-03-25 2012-03-06 Electromagnetic pump Abandoned US20120244014A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-068808 2011-03-25
JP2011068808A JP5505347B2 (ja) 2011-03-25 2011-03-25 電磁ポンプ

Publications (1)

Publication Number Publication Date
US20120244014A1 true US20120244014A1 (en) 2012-09-27

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ID=46877500

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/413,234 Abandoned US20120244014A1 (en) 2011-03-25 2012-03-06 Electromagnetic pump

Country Status (5)

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US (1) US20120244014A1 (zh)
JP (1) JP5505347B2 (zh)
CN (1) CN103119296A (zh)
DE (1) DE112012000094T5 (zh)
WO (1) WO2012132710A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015173099A1 (de) * 2014-05-16 2015-11-19 Robert Bosch Gmbh Vorrichtung zum einspritzen eines mediums, abgasnachbehandlungsanlage
US9957957B2 (en) 2012-10-31 2018-05-01 Aisin Aw Co., Ltd. Electromagnetic pump
US11988218B2 (en) 2021-03-10 2024-05-21 Multi Parts Supply Usa, Inc. Electric coolant pump with expansion compensating seal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2660744C1 (ru) * 2016-07-08 2018-07-09 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Поршневой насос
HUE055122T2 (hu) * 2018-07-20 2021-11-29 Grieshaber Vega Kg Elemmel vagy akkumulátorral mûködtetett terepi eszköz idõinformáció átvitellel
JP7129861B2 (ja) * 2018-09-27 2022-09-02 豊興工業株式会社 電磁ポンプ

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743179A (en) * 1985-02-13 1988-05-10 Webasto-Werk W. Baier Gmbh & Co. Electromagnetically activated piston pump
US5073095A (en) * 1990-04-10 1991-12-17 Purolator Product Company Whisper quiet electromagnetic fluid pump
US5797733A (en) * 1994-03-11 1998-08-25 Wilson Greatbatch Ltd. Low power electromagnetic pump
US20040022651A1 (en) * 2000-10-18 2004-02-05 Shogo Hashimoto Electromagnetic drive type plunger pump
US20040241017A1 (en) * 2003-05-30 2004-12-02 Buzzi S.R.L Reciprocating electromagnetic micro-pump, particularly for small electrical appliances
US20050089418A1 (en) * 2003-10-28 2005-04-28 Bonfardeci Anthony J. Electromagnetic fuel pump
US20070128054A1 (en) * 2003-09-05 2007-06-07 Inergy Auto. Systems Research (Societe Anonyme) Dosing pump for a liquid fuel additive
US20090120967A1 (en) * 2007-10-16 2009-05-14 Ivek Corporation Coupling system for use with fluid displacement apparatus
US20100215530A1 (en) * 2006-10-17 2010-08-26 Oliver Schmautz Piston pump for a vehicle brake system, having a piston rod
WO2010146952A1 (en) * 2009-06-18 2010-12-23 Aisin Aw Co., Ltd. Electromagnetic pump
US8388323B2 (en) * 2006-07-12 2013-03-05 Delphi Technologies Holding S.Arl Reagent dosing pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213607Y2 (zh) * 1974-04-10 1977-03-28
JPH0441260Y2 (zh) * 1984-10-15 1992-09-28

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743179A (en) * 1985-02-13 1988-05-10 Webasto-Werk W. Baier Gmbh & Co. Electromagnetically activated piston pump
US5073095A (en) * 1990-04-10 1991-12-17 Purolator Product Company Whisper quiet electromagnetic fluid pump
US5797733A (en) * 1994-03-11 1998-08-25 Wilson Greatbatch Ltd. Low power electromagnetic pump
US7094041B2 (en) * 2000-10-18 2006-08-22 Mikuni Corporation Electromagnetic drive type plunger pump
US20040022651A1 (en) * 2000-10-18 2004-02-05 Shogo Hashimoto Electromagnetic drive type plunger pump
US20040241017A1 (en) * 2003-05-30 2004-12-02 Buzzi S.R.L Reciprocating electromagnetic micro-pump, particularly for small electrical appliances
US20070128054A1 (en) * 2003-09-05 2007-06-07 Inergy Auto. Systems Research (Societe Anonyme) Dosing pump for a liquid fuel additive
US8109739B2 (en) * 2003-09-05 2012-02-07 Inergy Automotive Systems Research (Société Anonyme) Dosing pump for a liquid fuel additive
US20050089418A1 (en) * 2003-10-28 2005-04-28 Bonfardeci Anthony J. Electromagnetic fuel pump
US8388323B2 (en) * 2006-07-12 2013-03-05 Delphi Technologies Holding S.Arl Reagent dosing pump
US20100215530A1 (en) * 2006-10-17 2010-08-26 Oliver Schmautz Piston pump for a vehicle brake system, having a piston rod
US20090120967A1 (en) * 2007-10-16 2009-05-14 Ivek Corporation Coupling system for use with fluid displacement apparatus
WO2010146952A1 (en) * 2009-06-18 2010-12-23 Aisin Aw Co., Ltd. Electromagnetic pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9957957B2 (en) 2012-10-31 2018-05-01 Aisin Aw Co., Ltd. Electromagnetic pump
WO2015173099A1 (de) * 2014-05-16 2015-11-19 Robert Bosch Gmbh Vorrichtung zum einspritzen eines mediums, abgasnachbehandlungsanlage
US11988218B2 (en) 2021-03-10 2024-05-21 Multi Parts Supply Usa, Inc. Electric coolant pump with expansion compensating seal

Also Published As

Publication number Publication date
WO2012132710A1 (ja) 2012-10-04
JP2012202340A (ja) 2012-10-22
CN103119296A (zh) 2013-05-22
DE112012000094T5 (de) 2013-08-01
JP5505347B2 (ja) 2014-05-28

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AS Assignment

Owner name: AISIN AW CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NAKAI, MASAYA;KATO, KAZUHIKO;REEL/FRAME:027844/0808

Effective date: 20120301

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION