EP0972936A3 - Positive displacement pumps - Google Patents

Positive displacement pumps Download PDF

Info

Publication number
EP0972936A3
EP0972936A3 EP99305492A EP99305492A EP0972936A3 EP 0972936 A3 EP0972936 A3 EP 0972936A3 EP 99305492 A EP99305492 A EP 99305492A EP 99305492 A EP99305492 A EP 99305492A EP 0972936 A3 EP0972936 A3 EP 0972936A3
Authority
EP
European Patent Office
Prior art keywords
pumping
tappet
working fluid
positive displacement
assembly
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.)
Withdrawn
Application number
EP99305492A
Other languages
German (de)
French (fr)
Other versions
EP0972936A2 (en
Inventor
Stephen Michael Parker
Michael Peter Cooke
Ian Roy Thornthwaite
Peter Alban Collingborn
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.)
Delphi Technologies Inc
Original Assignee
Lucas Industries 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0972936A2 publication Critical patent/EP0972936A2/en
Publication of EP0972936A3 publication Critical patent/EP0972936A3/en
Withdrawn legal-status Critical Current

Links

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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • F04B1/043—Hydraulic arrangements
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

Abstract

A high pressure positive displacement pump, for example suitable for delivering fuel to a fuel injection system comprises one or more pumping assemblies (2,3,4). Each pumping assembly comprises a cylinder block (11) which defines a pumping cylinder (12) in which a pumping plunger (13) is slidably mounted. Each pumping plunger is connected to a tappet assembly (20) which comprises a tappet shell (21) slidably mounted in a bore (22). In use, the tappet assemblies engage a cam (6) to drive the pumping plungers in the pumping direction. A working fluid chamber (30) is defined on the side of each tappet assembly (20) opposite to the cam (6). In use, pressurised working fluid is delivered to the working fluid chamber (30) to drive the tappet and pumping plunger in the return direction. The arrangement obviates the need to provide a return spring for the pumping plungers.
EP99305492A 1998-07-14 1999-07-12 Positive displacement pumps Withdrawn EP0972936A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9815272 1998-07-14
GBGB9815272.1A GB9815272D0 (en) 1998-07-14 1998-07-14 Positive displacement pumps

Publications (2)

Publication Number Publication Date
EP0972936A2 EP0972936A2 (en) 2000-01-19
EP0972936A3 true EP0972936A3 (en) 2000-07-19

Family

ID=10835501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99305492A Withdrawn EP0972936A3 (en) 1998-07-14 1999-07-12 Positive displacement pumps

Country Status (4)

Country Link
EP (1) EP0972936A3 (en)
JP (1) JP2000038971A (en)
KR (1) KR20000016935A (en)
GB (1) GB9815272D0 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100686066B1 (en) * 2000-02-28 2007-02-23 엘지전자 주식회사 Apparatus for controlling of optical record medium
GB2366336A (en) 2000-08-31 2002-03-06 Delphi Tech Inc Fuel pump
GB0229367D0 (en) * 2002-12-17 2003-01-22 Delphi Tech Inc Fuel Pump
DE10356262A1 (en) * 2003-12-03 2005-06-30 Robert Bosch Gmbh Radial piston pump, in particular for fuel injection systems
JP4618416B2 (en) * 2004-11-16 2011-01-26 株式会社アドヴィックス Radial plunger pump
DE102007034036A1 (en) * 2007-07-20 2009-01-22 Robert Bosch Gmbh High-pressure fuel pump with roller tappet
EP2050952A1 (en) * 2007-10-16 2009-04-22 Delphi Technologies, Inc. Fuel pump
DE102007052668A1 (en) * 2007-11-05 2009-05-07 Robert Bosch Gmbh High pressure fuel pump
CN102121466B (en) * 2011-04-15 2012-10-10 浙江大农实业有限公司 Pump head structure of plunger pump
EP2535584A1 (en) * 2011-06-15 2012-12-19 Delphi Technologies Holding S.à.r.l. Pump assembly
GB201202221D0 (en) * 2012-02-09 2012-03-28 Delphi Tech Holding Sarl Improvements relating to fuel pumps
CN103266973A (en) * 2013-05-31 2013-08-28 龙口龙泵燃油喷射有限公司 Radial high-pressure oil feed pump of high-speed diesel engine
DE102015222463A1 (en) * 2015-11-13 2017-05-18 Hyundai Motor Company Pump for an injector and method of manufacturing a pump
CN106762273B (en) * 2017-03-21 2022-05-20 北油电控燃油喷射系统(天津)有限公司 High-pressure fuel pump lubricated by engine oil
JP2020133506A (en) * 2019-02-20 2020-08-31 株式会社デンソー Fuel injection pump
US11698050B2 (en) * 2020-07-13 2023-07-11 Powerhouse Engine Solutions Switzerland IP Holding GmbH System and method for oil supply to pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB533961A (en) * 1939-08-22 1941-02-25 Arthur John Rowledge Improvements in or relating to reciprocating pumps
US2702008A (en) * 1952-06-09 1955-02-15 John M Stockard Pumping apparatus
US4687426A (en) * 1984-07-31 1987-08-18 Fuji Techno Kogyo Kabushiki Kaisha Constant volume pulsation-free reciprocating pump
DE19531873C1 (en) * 1995-08-30 1996-11-07 Daimler Benz Ag Fuel high pressure pump for internal combustion engine
EP0856661A2 (en) * 1997-01-30 1998-08-05 Lucas Industries Public Limited Company Fuel pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB533961A (en) * 1939-08-22 1941-02-25 Arthur John Rowledge Improvements in or relating to reciprocating pumps
US2702008A (en) * 1952-06-09 1955-02-15 John M Stockard Pumping apparatus
US4687426A (en) * 1984-07-31 1987-08-18 Fuji Techno Kogyo Kabushiki Kaisha Constant volume pulsation-free reciprocating pump
DE19531873C1 (en) * 1995-08-30 1996-11-07 Daimler Benz Ag Fuel high pressure pump for internal combustion engine
EP0856661A2 (en) * 1997-01-30 1998-08-05 Lucas Industries Public Limited Company Fuel pump

Also Published As

Publication number Publication date
GB9815272D0 (en) 1998-09-09
JP2000038971A (en) 2000-02-08
EP0972936A2 (en) 2000-01-19
KR20000016935A (en) 2000-03-25

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