US20080138220A1 - Hydraulic pump of automatic transmission - Google Patents
Hydraulic pump of automatic transmission Download PDFInfo
- 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
Links
Images
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0123320 | 2006-12-06 | ||
KR1020060123320A KR100892695B1 (ko) | 2006-12-06 | 2006-12-06 | 자동변속기의 오일펌프 |
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)
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)
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)
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)
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 |
-
2006
- 2006-12-06 KR KR1020060123320A patent/KR100892695B1/ko active IP Right Grant
-
2007
- 2007-01-18 JP JP2007009383A patent/JP2008144956A/ja active Pending
- 2007-01-31 CN CN2007100069914A patent/CN101196188B/zh active Active
- 2007-02-22 US US11/709,501 patent/US20080138220A1/en not_active Abandoned
Patent Citations (2)
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)
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 |
---|---|
KR100892695B1 (ko) | 2009-04-15 |
KR20080051732A (ko) | 2008-06-11 |
CN101196188A (zh) | 2008-06-11 |
JP2008144956A (ja) | 2008-06-26 |
CN101196188B (zh) | 2011-08-31 |
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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 |