EP0664378A1 - Pumping arrangement - Google Patents

Pumping arrangement Download PDF

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Publication number
EP0664378A1
EP0664378A1 EP94308750A EP94308750A EP0664378A1 EP 0664378 A1 EP0664378 A1 EP 0664378A1 EP 94308750 A EP94308750 A EP 94308750A EP 94308750 A EP94308750 A EP 94308750A EP 0664378 A1 EP0664378 A1 EP 0664378A1
Authority
EP
European Patent Office
Prior art keywords
pump
valve
pumps
common
oil
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Withdrawn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
EP94308750A
Other languages
German (de)
English (en)
French (fr)
Inventor
Steve Hodge
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.)
Concentric Pumps Ltd
Original Assignee
Concentric Pumps 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 Concentric Pumps Ltd filed Critical Concentric Pumps Ltd
Publication of EP0664378A1 publication Critical patent/EP0664378A1/en
Withdrawn legal-status Critical Current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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps

Definitions

  • This invention relates to oil pumps for I.C. engines. Such pumps are engine driven, and as such, the pump output is nominally proportional to engine speed.
  • an engine oil pump comprises a drive shaft connected to a pair of pumps having a common inlet supply and separate but connected outlets, including a diverter valve in one of the outlets effective to return oil from the corresponding pump direct to supply at higher delivery rates/pressures.
  • an engine oil pump comprises a drive shaft connected to a pair of gerotor oil pumps having their inlets connected to a common supply, and their outlets connected to a common delivery passage, and with a control valve located between one of the outlets and the delivery passage arranged to divert oil from one of the gerotor sets to the common supply when the valve is open, and with the valve arranged to open automatically at higher pressures/delivery rates.
  • the valve may be a simple spring controlled valve. When the pump output pressure is low, the valve remains closed and all output goes to the delivery passage. As pressure rises, primarily with speed of the engine, but possibly also due to reduction in viscosity as in the case of low temperatures the valve opens and allows some and then all of the output from the one gerotor set to bypass the delivery passage and return directly to the supply source, for example the sump.
  • the power utilization of the gerotor set depends upon the outlet pressure: hence by connecting the outlet direct to sump the pressure is effectively zero so that the workload on the pump is relieved and the gerotor set in question uses minimal energy at such time.
  • Gerotor pumps are well understood in the art and comprise a male lobed rotor with n lobes located in a female lobed annulus having n+1 lobes. This forms a series of chambers between the rotor and annulus, each bounded by the pump body in planes normal to the axis of rotation and also bounded by the lines of contact between the parts. As the rotor and annulus rotate albeit at different speeds, the chambers revolve about the axes (the rotor and annulus are on parallel not coincident axes) and vary in size.
  • the outlet passage 22 from the pump 14 extends to a sump, that is the same source of supply as the inlet 16, with a pair of connection passages 24 26 extending from the passage 22 to the passage 18.
  • Passage 24 communicates pressure from outlet 18 to act upon the control valve 28 which may be spring urged at 30 to the closed position illustrated in Figure 1. In this position ball valve 32 in passages 26 is open to allow flow from passage 22 via 26 to the outlet 20. Both passages are effective to deliver oil to the engine and both pumps absorb energy.
  • valve 28 moves to open the path in passage 22 direct to the sump, and the ball valve also seats so that there is no flow between passages 18 22 in either direction and the one pump delivers to the engine and the other pump delivers back to the sump. At this time pump 14 uses but little energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP94308750A 1994-01-21 1994-11-28 Pumping arrangement Withdrawn EP0664378A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9401089 1994-01-21
GB9401089A GB2286017A (en) 1994-01-21 1994-01-21 Improvements relating to pumps

Publications (1)

Publication Number Publication Date
EP0664378A1 true EP0664378A1 (en) 1995-07-26

Family

ID=10749088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94308750A Withdrawn EP0664378A1 (en) 1994-01-21 1994-11-28 Pumping arrangement

Country Status (8)

Country Link
EP (1) EP0664378A1 (fi)
JP (1) JPH07259751A (fi)
KR (1) KR950023857A (fi)
BR (1) BR9500270A (fi)
FI (1) FI945874A (fi)
GB (1) GB2286017A (fi)
NO (1) NO950195L (fi)
WO (1) WO1995020099A1 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147096A1 (es) * 1996-12-11 2000-08-16 Suzuki Co Ltd Dispositivo de suministro de aceite de motor de dos tiempos para vehiculo.
CN100445519C (zh) * 2006-09-22 2008-12-24 郑国璋 多种燃料柴油机机油增压泵
US7516729B2 (en) 2005-07-28 2009-04-14 J.C. Bamford Excavation Limited Providing lubricant to an engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6350476B2 (ja) * 2015-09-30 2018-07-04 マツダ株式会社 エンジンのオイル供給装置
US9903241B2 (en) 2015-11-13 2018-02-27 Briggs & Stratton Corporation Small air-cooled engine assembly with dry sump lubrication system
USD854650S1 (en) 2017-09-15 2019-07-23 Briggs & Stratton Corporation Oil filter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5926692A (ja) * 1982-07-31 1984-02-10 Isuzu Motors Ltd 車両用潤滑油系の運転制御方法
JPS6480717A (en) * 1987-09-22 1989-03-27 Honda Motor Co Ltd Engine oil feeding device
JPH03179177A (ja) * 1989-12-06 1991-08-05 Saitama Kiki Kk オイルポンプ装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1021000A (en) * 1965-01-09 1966-02-23 Ford Motor Co Rotary hydraulic pumps and motors
US3551081A (en) * 1969-01-10 1970-12-29 Emerson Electric Co Hydraulic pump or motor
IT1119682B (it) * 1979-03-07 1986-03-10 Fiat Allis Macch Movi Pompa a afluido per circuiti idraulici
US4412789A (en) * 1980-10-31 1983-11-01 Jidosha Kiki Co., Ltd. Oil pump unit
GB2108584A (en) * 1981-10-06 1983-05-18 Newage Transmissions Limited Oil-pump arrangements

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5926692A (ja) * 1982-07-31 1984-02-10 Isuzu Motors Ltd 車両用潤滑油系の運転制御方法
JPS6480717A (en) * 1987-09-22 1989-03-27 Honda Motor Co Ltd Engine oil feeding device
JPH03179177A (ja) * 1989-12-06 1991-08-05 Saitama Kiki Kk オイルポンプ装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 287 (M - 844) 30 June 1989 (1989-06-30) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 427 (M - 1174) 30 October 1991 (1991-10-30) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 120 (M - 300) 6 June 1984 (1984-06-06) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147096A1 (es) * 1996-12-11 2000-08-16 Suzuki Co Ltd Dispositivo de suministro de aceite de motor de dos tiempos para vehiculo.
US7516729B2 (en) 2005-07-28 2009-04-14 J.C. Bamford Excavation Limited Providing lubricant to an engine
CN100445519C (zh) * 2006-09-22 2008-12-24 郑国璋 多种燃料柴油机机油增压泵

Also Published As

Publication number Publication date
FI945874A (fi) 1995-07-22
GB2286017A (en) 1995-08-02
NO950195D0 (no) 1995-01-19
WO1995020099A1 (en) 1995-07-27
NO950195L (no) 1995-07-24
BR9500270A (pt) 1995-10-17
JPH07259751A (ja) 1995-10-09
FI945874A0 (fi) 1994-12-14
GB9401089D0 (en) 1994-03-16
KR950023857A (ko) 1995-08-18

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Effective date: 19960127