US20120076683A1 - Structure of Variable Oil Pump - Google Patents

Structure of Variable Oil Pump Download PDF

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Publication number
US20120076683A1
US20120076683A1 US12/947,113 US94711310A US2012076683A1 US 20120076683 A1 US20120076683 A1 US 20120076683A1 US 94711310 A US94711310 A US 94711310A US 2012076683 A1 US2012076683 A1 US 2012076683A1
Authority
US
United States
Prior art keywords
oil pump
space
inlet
variable oil
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
US12/947,113
Other languages
English (en)
Inventor
Jaepil Lim
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.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
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 Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Assigned to HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIM, JAEPIL
Publication of US20120076683A1 publication Critical patent/US20120076683A1/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
    • 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
    • F04C2/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter

Definitions

  • the present invention relates to a variable oil pump, and more particularly, to a structure of a channel through which oil flows into a variable oil pump which improves fuel efficiency of an engine of a vehicle by adjusting the discharged flow rate in accordance with changes in number of revolution of the engine and preventing unnecessary energy waste while pumping up the oil by using power provided from the engine.
  • FIGS. 1 and 2 show the outer shape and the internal structure of a variable oil pump of the related art, which includes a driving gear 500 receiving power from an engine, a rotor 504 rotating by means of torque from driving gear 500 and having a plurality of veins 502 , an outer ring 508 covering the outsides of veins 502 and rotating about a pivot pin 506 fixed to a housing to change the volume of a pumping space 520 formed between veins 502 while changing the eccentric position from the rotational center of rotor 504 , and a spring 510 elastically supporting outer ring 508 .
  • a driving gear 500 receiving power from an engine
  • a rotor 504 rotating by means of torque from driving gear 500 and having a plurality of veins 502
  • an outer ring 508 covering the outsides of veins 502 and rotating about a pivot pin 506 fixed to a housing to change the volume of a pumping space 520 formed between veins 502 while changing the eccentric position from the rotational center of rotor 504
  • An inlet 512 for sucking oil is connected to the side where spring 510 is disposed and an outlet 514 for discharging the oil is connected to the opposite side.
  • outer ring 508 reduces the volume of pumping space 520 while rotating about pivot pin 506 and the driving torque rotating driving gear 500 increases, when the pressure at outlet 514 increases larger than the pressure of spring 510 .
  • FIG. 3 is a view of a cover 516 forming the housing for the variable oil pump of the related art, seen from the inside of the variable oil pump and
  • FIG. 4 is a three-dimensional view showing the space through which oil passes, in the variable oil pump of the related art.
  • inlet 512 is connected into the variable oil pump with a cylindrical passageway and an arc-shaped intake space 518 is formed at the intake side in the variable oil pump, such that oil can be supplied between veins 502 by rotation of rotor 504 .
  • an arc-shaped outlet space 522 is also connected with cylindrical outlet 514 at the outlet side, such that the oil discharged out of pumping space 520 formed between veins 502 can pass.
  • inlet 512 and intake space 518 are connected at a relatively small portion, such as a neck, and intake space 518 is connected to a side of inlet 512 , such that the intake resistance of the sucked oil increases and a vortex is generated, and the intake resistance and vortex are main factors causing veins 502 of rotor 504 to make pulse noise in rotating.
  • the present invention has been made in an effort to provide a structure of a variable oil pump that can reduce pulse noise generated in the variable oil pump by reducing intake resistance and vortex generated when sucking oil at the intake side of the variable oil pump.
  • variable oil pump which includes an inlet connected to supply oil into a housing of the variable oil pump, an intake space formed in the housing to be connected to a pumping space between veins mounted on a rotor in the variable oil pump, and a buffer space having a large cross-sectional area than the inlet and connected with the inlet and the intake space.
  • a buffer space may be formed at the intake side in a variable oil pump, it is possible to reduce pulse noise generated in the variable oil pump by reducing intake resistance and vortex which are generated in sucking oil.
  • FIG. 1 is a view showing the outer shape of a variable oil pump of the related art.
  • FIG. 2 is a view showing the internal structure of the variable oil pump of the related art.
  • FIG. 3 is a view showing the structure of a cover of the variable oil pump of the related art.
  • FIG. 4 is a three-dimensional view showing a space through which oil flows into the variable oil pump of the related art.
  • FIG. 5 is a view showing the structure of a cover of an exemplary variable oil pump according to the present invention.
  • FIG. 6 is a three-dimensional view showing a space through which oil flows into the exemplary variable oil pump according to the present invention.
  • a variable oil pump may include an inlet 1 connected to supply oil into the housing of the variable oil pump an arc-shaped intake space 5 formed in the housing to be connected to a pumping space between veins 3 mounted on a rotor in the variable oil pump, and a buffer space 7 having a large cross-sectional area than inlet 1 and connected with inlet 1 and intake space 5 .
  • buffer space 7 formed between inlet 1 and intake space 5 has considerably large volume than the related art, it is possible to minimize intake resistance and vortex which are generated in sucking oil and accordingly it is possible to reduce pulse noise generated by veins 3 of the rotor by the intake resistance and vortex.
  • Buffer space 7 is a space where a spring elastically supporting an outer ring that makes a variable pumping space together with veins 3 while changing the eccentric position from the rotor.
  • Inlet 1 is connected to the inside of the housing with a cylindrical passageway, intake space 5 is arranged in an arc shape when seen in the longitudinal direction of the cylindrical passageway of inlet 1 , such that inlet 1 is connected to intake space 5 at the outside of the arc shape formed by intake space 5 .
  • arc-shaped intake space is provided above and under the rotor and buffer space 7 is connected to both of upper and lower intake space 5 .
  • the housing of the variable oil pump is similar to the related art, composed of a body disposed above the rotor and a cover 9 disposed under the rotor, where the body is deep such that the vertical height of the rotor can be covered, cover 9 is combined with the body such that the inner side of the variable oil pump is made flat, and lower intake space 5 and inlet 1 are formed at cover 9 .
  • cover 9 has an enlarged depression 11 connected with lower intake space 5 and inlet 1 , as shown in FIG. 5 , thereby forming a portion of buffer space 7 .
  • enlarged depression 11 includes the entire cylindrical cross-section of inlet 1 and formed in cover 9 in a shape corresponding to the space formed in the body to dispose the spring such that the space formed to mount the spring in the body is connected with inlet 1 and intake space 5 , thereby forming buffer space 7 .
  • the structures of the body and the rotor are little different from those shown in FIG. 2 and they are not shown.
  • variable oil pump having buffer space 7 the resistance against the flow of intake oil is relatively small, such that the intake resistance is reduced and the vortex is remarkably reduced.
  • veins 3 generate by the intake resistance and the vortex which are generated in sucking oil in the related art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
US12/947,113 2010-09-29 2010-11-16 Structure of Variable Oil Pump Abandoned US20120076683A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0094806 2010-09-29
KR1020100094806A KR20120033180A (ko) 2010-09-29 2010-09-29 가변오일펌프 구조

Publications (1)

Publication Number Publication Date
US20120076683A1 true US20120076683A1 (en) 2012-03-29

Family

ID=45804776

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/947,113 Abandoned US20120076683A1 (en) 2010-09-29 2010-11-16 Structure of Variable Oil Pump

Country Status (4)

Country Link
US (1) US20120076683A1 (zh)
KR (1) KR20120033180A (zh)
CN (1) CN102434457A (zh)
DE (1) DE102010060709A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103363279A (zh) * 2012-04-05 2013-10-23 同济大学 一种步进电机控制的叶片式无级变量机油泵
CN105275822A (zh) * 2015-10-26 2016-01-27 珠海凌达压缩机有限公司 压缩机吸气结构及其加工方法、压缩机
JP2017053273A (ja) * 2015-09-10 2017-03-16 日立オートモティブシステムズ株式会社 可変容量形ポンプ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090101092A1 (en) * 2007-10-17 2009-04-23 Hitachi, Ltd. Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines
US20090202375A1 (en) * 2006-05-05 2009-08-13 Shulver David R Continuously Variable Displacement Vane Pump And System
US20090291000A1 (en) * 2008-05-22 2009-11-26 Hitachi, Ltd. Variable displacement vane pump
US20100008806A1 (en) * 2005-07-29 2010-01-14 Johannes Koller Vane pump
US20100232989A1 (en) * 2009-03-11 2010-09-16 Hitachi Automotive Systems, Ltd. Variable displacement oil pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6763797B1 (en) * 2003-01-24 2004-07-20 General Motors Corporation Engine oil system with variable displacement pump
CA2565179C (en) * 2004-05-07 2014-01-21 Magna Powertrain Inc. Vane pump using line pressure to directly regulate displacement
JP5172289B2 (ja) * 2007-11-21 2013-03-27 日立オートモティブシステムズ株式会社 可変容量形ポンプ
KR101036664B1 (ko) 2009-02-19 2011-05-25 웅진케미칼 주식회사 고흡수성 구조체 및 그의 제조방법

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100008806A1 (en) * 2005-07-29 2010-01-14 Johannes Koller Vane pump
US20090202375A1 (en) * 2006-05-05 2009-08-13 Shulver David R Continuously Variable Displacement Vane Pump And System
US20090101092A1 (en) * 2007-10-17 2009-04-23 Hitachi, Ltd. Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines
US7827947B2 (en) * 2007-10-17 2010-11-09 Hitachi, Ltd. Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines
US20090291000A1 (en) * 2008-05-22 2009-11-26 Hitachi, Ltd. Variable displacement vane pump
US8142173B2 (en) * 2008-05-22 2012-03-27 Hitachi, Ltd. Variable displacement vane pump
US20100232989A1 (en) * 2009-03-11 2010-09-16 Hitachi Automotive Systems, Ltd. Variable displacement oil pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103363279A (zh) * 2012-04-05 2013-10-23 同济大学 一种步进电机控制的叶片式无级变量机油泵
JP2017053273A (ja) * 2015-09-10 2017-03-16 日立オートモティブシステムズ株式会社 可変容量形ポンプ
CN105275822A (zh) * 2015-10-26 2016-01-27 珠海凌达压缩机有限公司 压缩机吸气结构及其加工方法、压缩机

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Publication number Publication date
KR20120033180A (ko) 2012-04-06
DE102010060709A1 (de) 2012-03-29
CN102434457A (zh) 2012-05-02

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIM, JAEPIL;REEL/FRAME:025365/0306

Effective date: 20101111

Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIM, JAEPIL;REEL/FRAME:025365/0306

Effective date: 20101111

STCB Information on status: application discontinuation

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