US20080138220A1 - Hydraulic pump of automatic transmission - Google Patents

Hydraulic pump of automatic transmission Download PDF

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Publication number
US20080138220A1
US20080138220A1 US11/709,501 US70950107A US2008138220A1 US 20080138220 A1 US20080138220 A1 US 20080138220A1 US 70950107 A US70950107 A US 70950107A US 2008138220 A1 US2008138220 A1 US 2008138220A1
Authority
US
United States
Prior art keywords
pump
oil
pump housing
hydraulic
cover
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
US11/709,501
Other languages
English (en)
Inventor
Woongseok Kang
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
Original Assignee
Hyundai Motor Co
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 filed Critical Hyundai Motor Co
Assigned to HYUNDAI MOTOR COMPANY reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANG, WOONGSEOK
Publication of US20080138220A1 publication Critical patent/US20080138220A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • 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
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control

Definitions

  • the present invention relates to a hydraulic pump of an automatic transmission. More particularly, the present invention relates to a hydraulic pump of an automatic transmission that prevents bubbles generated by churning by draining surplus oil to a portion of the automatic transmission away from rotational elements.
  • a hydraulic pump is generally mounted between a torque converter and a transmission case.
  • the hydraulic pump supplies oil to a transmission and a shifting unit, and provides lubrication and cooling of the transmission.
  • the oil of the hydraulic pump is supplied to a line pressure control valve, and oil pressure increases until it reaches a predetermined pressure. The oil then returns to the hydraulic pump through a drain port of the line pressure control valve.
  • the present invention provides a hydraulic pump of an automatic transmission that prevents generation of bubbles by exhausting surplus oil through a drain hole to a lower portion of the automatic transmission away from rotational elements.
  • Exemplary embodiments of the present invention provide a hydraulic pump of an automatic transmission, including: a pump housing; a pump cover attached to the pump housing; a bush attached to the pump housing; a rotor mounted between the pump cover and the pump housing; an oil input port between the pump housing and the pump cover; an oil output port between the pump housing and the pump cover; and a drain hydraulic line between the pump housing and the pump cover.
  • the drain hydraulic line is substantially vertical.
  • the oil input port, the oil output port, and the drain hydraulic line may be disposed on the pump cover.
  • the drain hydraulic line may be connected to an oil reservoir.
  • a sealing member may further be provided between the pump housing and the bush. Surplus oil may remain at a joint between the sealing member and the bush.
  • the drain hydraulic line may be connected to the joint between the sealing member and the bush through a drain hole of the pump housing.
  • FIG. 1 is an exploded assembly view of a hydraulic pump of an automatic transmission according to an exemplary embodiment of the present invention.
  • FIG. 2 is a perspective view of a pump cover according to an exemplary embodiment of the present invention.
  • FIG. 3 is a cross-sectional view showing an automatic transmission in which a hydraulic pump according to an exemplary embodiment of the present invention is installed.
  • FIG. 4 is a partial enlarged view of FIG. 3 .
  • a hydraulic pump 100 of an automatic transmission is disposed between a torque converter 300 and a shifting unit 200 .
  • a main shaft 310 is mounted in the automatic transmission.
  • An oil reservoir 250 is provided at a lower portion of the automatic transmission at a place away from rotational elements, such as clutch C.
  • the torque converter 300 receives torque from an engine (not shown) and transmits the torque to the main shaft 310 .
  • the hydraulic pump 100 and the shifting unit 200 are operated by the torque of the main shaft 310 .
  • the shifting unit 200 includes at least one planetary gear set (not shown), a brake B, and a clutch C.
  • the hydraulic pump 100 includes a pump housing 110 , a pump cover 120 bolted to the pump housing 110 , a bush 150 press fitted to the pump housing 110 , and a rotor 170 mounted between the pump cover 120 and the pump housing 110 .
  • the bush 150 reduces frictional force between the rotor 170 and the pump cover 120 .
  • the rotor 170 includes an inner rotor 140 and an outer rotor 130 mounted at an exterior of the inner rotor 140 .
  • the rotor 170 pressurizes and exhausts oil by rotating with the main shaft 310 .
  • a sealing member 160 is interposed between the pump housing 110 and the bush 150 .
  • the sealing member 160 prevents the oil of the hydraulic pump 100 from leaking out.
  • Surplus oil i.e. oil that is not supplied to a valve body, remains at the joint of the bush 150 and the sealing member 160 .
  • an oil input port 210 an oil output port 220 , a drain hole 230 , and a drain hydraulic line 240 are provided on the pump cover 120 , on a surface facing the pump housing 110 .
  • the oil is supplied to the pump 100 from an oil fan (not shown) through the oil input port 210 , and exhausted to the valve body (not shown) through the oil output port 220 .
  • the drain hole 230 is connected to the joint of the bush 150 and the sealing member 160 . Therefore, the surplus oil remaining at the joint of the bush 150 and the sealing member 160 drains through the drain hole 230 .
  • the drain hole 230 is connected to the drain hydraulic line 240 .
  • the drain hydraulic line 240 extends downward, substantially vertically, and is connected to the oil reservoir 250 .
  • the oil in the oil reservoir 250 is filtered and supplied to the hydraulic pump 100 through the oil input port 210 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US11/709,501 2006-12-06 2007-02-22 Hydraulic pump of automatic transmission Abandoned US20080138220A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060123320A KR100892695B1 (ko) 2006-12-06 2006-12-06 자동변속기의 오일펌프
KR10-2006-0123320 2006-12-06

Publications (1)

Publication Number Publication Date
US20080138220A1 true US20080138220A1 (en) 2008-06-12

Family

ID=39498257

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/709,501 Abandoned US20080138220A1 (en) 2006-12-06 2007-02-22 Hydraulic pump of automatic transmission

Country Status (4)

Country Link
US (1) US20080138220A1 (ko)
JP (1) JP2008144956A (ko)
KR (1) KR100892695B1 (ko)
CN (1) CN101196188B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090241532A1 (en) * 2008-03-31 2009-10-01 Aisin Aw Co., Ltd. Drain structure of torque converter
US20120141302A1 (en) * 2010-12-03 2012-06-07 Hyundai Motor Company Oil pump system for automatic transmission
CN103195702A (zh) * 2013-04-19 2013-07-10 湖南机油泵股份有限公司 一种减震式汽车变速箱油泵

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101405188B1 (ko) * 2012-10-05 2014-06-10 현대자동차 주식회사 토크컨버터의 드레인장치
KR101707527B1 (ko) 2016-05-26 2017-02-16 주식회사 신도하이텍 자동차 변속기용 오일펌프의 리액션 샤프트 제조방법, 이를 통해 성형된 자동차 변속기용 오일펌프의 리액션 샤프트
KR102003803B1 (ko) * 2018-04-25 2019-07-25 명화공업주식회사 오일펌프

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24064E (en) * 1955-09-20 Rotary pump and motor hydraulic
US3083588A (en) * 1958-03-12 1963-04-02 Gen Motors Corp Automatic transmission

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547321Y2 (ko) * 1988-07-18 1993-12-13
JP3084103B2 (ja) * 1991-09-20 2000-09-04 ジヤトコ・トランステクノロジー株式会社 自動変速機の油圧回路
JPH08121567A (ja) * 1994-10-20 1996-05-14 Jatco Corp オイルポンプ構造
JPH10213208A (ja) * 1997-01-27 1998-08-11 Jatco Corp 車両用自動変速機
CN1200448A (zh) * 1997-05-22 1998-12-02 欧阳抗美 一种电子自动变速器油泵
JP3606775B2 (ja) 1999-10-19 2005-01-05 ジヤトコ株式会社 オイルポンプカバーの油路構造
US6386836B1 (en) * 2000-01-20 2002-05-14 Eagle-Picher Industries, Inc. Dual gerotor pump for use with automatic transmission
JP2002054728A (ja) * 2000-08-09 2002-02-20 Honda Motor Co Ltd トランスミッションの油路構造
JP2003014090A (ja) * 2001-06-28 2003-01-15 Fuji Heavy Ind Ltd 自動変速機のオイル分離構造
KR20040090263A (ko) * 2003-04-17 2004-10-22 현대자동차주식회사 오일 펌프의 하우징 구조
JP4525225B2 (ja) 2004-07-26 2010-08-18 アイシン・エィ・ダブリュ株式会社 自動変速機トルクコンバータの油抜け防止装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24064E (en) * 1955-09-20 Rotary pump and motor hydraulic
US3083588A (en) * 1958-03-12 1963-04-02 Gen Motors Corp Automatic transmission

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090241532A1 (en) * 2008-03-31 2009-10-01 Aisin Aw Co., Ltd. Drain structure of torque converter
US8316640B2 (en) * 2008-03-31 2012-11-27 Aisin Aw Co., Ltd. Drain structure of torque converter
US20120141302A1 (en) * 2010-12-03 2012-06-07 Hyundai Motor Company Oil pump system for automatic transmission
US8668468B2 (en) * 2010-12-03 2014-03-11 Hyundai Motor Company Oil pump system for automatic transmission
CN103195702A (zh) * 2013-04-19 2013-07-10 湖南机油泵股份有限公司 一种减震式汽车变速箱油泵

Also Published As

Publication number Publication date
KR20080051732A (ko) 2008-06-11
CN101196188B (zh) 2011-08-31
JP2008144956A (ja) 2008-06-26
CN101196188A (zh) 2008-06-11
KR100892695B1 (ko) 2009-04-15

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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:KANG, WOONGSEOK;REEL/FRAME:019013/0274

Effective date: 20070214

STCB Information on status: application discontinuation

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